1 | |
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3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | |
14 | #include "clang/AST/APValue.h" |
15 | #include "clang/AST/ASTContext.h" |
16 | #include "clang/AST/Attr.h" |
17 | #include "clang/AST/AttrIterator.h" |
18 | #include "clang/AST/CharUnits.h" |
19 | #include "clang/AST/Decl.h" |
20 | #include "clang/AST/DeclBase.h" |
21 | #include "clang/AST/DeclCXX.h" |
22 | #include "clang/AST/DeclObjC.h" |
23 | #include "clang/AST/DeclarationName.h" |
24 | #include "clang/AST/EvaluatedExprVisitor.h" |
25 | #include "clang/AST/Expr.h" |
26 | #include "clang/AST/ExprCXX.h" |
27 | #include "clang/AST/ExprObjC.h" |
28 | #include "clang/AST/ExprOpenMP.h" |
29 | #include "clang/AST/FormatString.h" |
30 | #include "clang/AST/NSAPI.h" |
31 | #include "clang/AST/NonTrivialTypeVisitor.h" |
32 | #include "clang/AST/OperationKinds.h" |
33 | #include "clang/AST/RecordLayout.h" |
34 | #include "clang/AST/Stmt.h" |
35 | #include "clang/AST/TemplateBase.h" |
36 | #include "clang/AST/Type.h" |
37 | #include "clang/AST/TypeLoc.h" |
38 | #include "clang/AST/UnresolvedSet.h" |
39 | #include "clang/Basic/AddressSpaces.h" |
40 | #include "clang/Basic/CharInfo.h" |
41 | #include "clang/Basic/Diagnostic.h" |
42 | #include "clang/Basic/IdentifierTable.h" |
43 | #include "clang/Basic/LLVM.h" |
44 | #include "clang/Basic/LangOptions.h" |
45 | #include "clang/Basic/OpenCLOptions.h" |
46 | #include "clang/Basic/OperatorKinds.h" |
47 | #include "clang/Basic/PartialDiagnostic.h" |
48 | #include "clang/Basic/SourceLocation.h" |
49 | #include "clang/Basic/SourceManager.h" |
50 | #include "clang/Basic/Specifiers.h" |
51 | #include "clang/Basic/SyncScope.h" |
52 | #include "clang/Basic/TargetBuiltins.h" |
53 | #include "clang/Basic/TargetCXXABI.h" |
54 | #include "clang/Basic/TargetInfo.h" |
55 | #include "clang/Basic/TypeTraits.h" |
56 | #include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering. |
57 | #include "clang/Sema/Initialization.h" |
58 | #include "clang/Sema/Lookup.h" |
59 | #include "clang/Sema/Ownership.h" |
60 | #include "clang/Sema/Scope.h" |
61 | #include "clang/Sema/ScopeInfo.h" |
62 | #include "clang/Sema/Sema.h" |
63 | #include "clang/Sema/SemaInternal.h" |
64 | #include "llvm/ADT/APFloat.h" |
65 | #include "llvm/ADT/APInt.h" |
66 | #include "llvm/ADT/APSInt.h" |
67 | #include "llvm/ADT/ArrayRef.h" |
68 | #include "llvm/ADT/DenseMap.h" |
69 | #include "llvm/ADT/FoldingSet.h" |
70 | #include "llvm/ADT/None.h" |
71 | #include "llvm/ADT/Optional.h" |
72 | #include "llvm/ADT/STLExtras.h" |
73 | #include "llvm/ADT/SmallBitVector.h" |
74 | #include "llvm/ADT/SmallPtrSet.h" |
75 | #include "llvm/ADT/SmallString.h" |
76 | #include "llvm/ADT/SmallVector.h" |
77 | #include "llvm/ADT/StringRef.h" |
78 | #include "llvm/ADT/StringSet.h" |
79 | #include "llvm/ADT/StringSwitch.h" |
80 | #include "llvm/ADT/Triple.h" |
81 | #include "llvm/Support/AtomicOrdering.h" |
82 | #include "llvm/Support/Casting.h" |
83 | #include "llvm/Support/Compiler.h" |
84 | #include "llvm/Support/ConvertUTF.h" |
85 | #include "llvm/Support/ErrorHandling.h" |
86 | #include "llvm/Support/Format.h" |
87 | #include "llvm/Support/Locale.h" |
88 | #include "llvm/Support/MathExtras.h" |
89 | #include "llvm/Support/SaveAndRestore.h" |
90 | #include "llvm/Support/raw_ostream.h" |
91 | #include <algorithm> |
92 | #include <bitset> |
93 | #include <cassert> |
94 | #include <cctype> |
95 | #include <cstddef> |
96 | #include <cstdint> |
97 | #include <functional> |
98 | #include <limits> |
99 | #include <string> |
100 | #include <tuple> |
101 | #include <utility> |
102 | |
103 | using namespace clang; |
104 | using namespace sema; |
105 | |
106 | SourceLocation Sema::getLocationOfStringLiteralByte(const StringLiteral *SL, |
107 | unsigned ByteNo) const { |
108 | return SL->getLocationOfByte(ByteNo, getSourceManager(), LangOpts, |
109 | Context.getTargetInfo()); |
110 | } |
111 | |
112 | |
113 | |
114 | static bool checkArgCount(Sema &S, CallExpr *call, unsigned desiredArgCount) { |
115 | unsigned argCount = call->getNumArgs(); |
116 | if (argCount == desiredArgCount) return false; |
117 | |
118 | if (argCount < desiredArgCount) |
119 | return S.Diag(call->getEndLoc(), diag::err_typecheck_call_too_few_args) |
120 | << 0 << desiredArgCount << argCount |
121 | << call->getSourceRange(); |
122 | |
123 | |
124 | SourceRange range(call->getArg(desiredArgCount)->getBeginLoc(), |
125 | call->getArg(argCount - 1)->getEndLoc()); |
126 | |
127 | return S.Diag(range.getBegin(), diag::err_typecheck_call_too_many_args) |
128 | << 0 << desiredArgCount << argCount |
129 | << call->getArg(1)->getSourceRange(); |
130 | } |
131 | |
132 | |
133 | |
134 | static bool SemaBuiltinAnnotation(Sema &S, CallExpr *TheCall) { |
135 | if (checkArgCount(S, TheCall, 2)) |
136 | return true; |
137 | |
138 | |
139 | Expr *ValArg = TheCall->getArg(0); |
140 | QualType Ty = ValArg->getType(); |
141 | if (!Ty->isIntegerType()) { |
142 | S.Diag(ValArg->getBeginLoc(), diag::err_builtin_annotation_first_arg) |
143 | << ValArg->getSourceRange(); |
144 | return true; |
145 | } |
146 | |
147 | |
148 | Expr *StrArg = TheCall->getArg(1)->IgnoreParenCasts(); |
149 | StringLiteral *Literal = dyn_cast<StringLiteral>(StrArg); |
150 | if (!Literal || !Literal->isAscii()) { |
151 | S.Diag(StrArg->getBeginLoc(), diag::err_builtin_annotation_second_arg) |
152 | << StrArg->getSourceRange(); |
153 | return true; |
154 | } |
155 | |
156 | TheCall->setType(Ty); |
157 | return false; |
158 | } |
159 | |
160 | static bool SemaBuiltinMSVCAnnotation(Sema &S, CallExpr *TheCall) { |
161 | |
162 | if (TheCall->getNumArgs() < 1) { |
163 | S.Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least) |
164 | << 0 << 1 << TheCall->getNumArgs() |
165 | << TheCall->getCallee()->getSourceRange(); |
166 | return true; |
167 | } |
168 | |
169 | |
170 | for (Expr *Arg : TheCall->arguments()) { |
171 | auto *Literal = dyn_cast<StringLiteral>(Arg->IgnoreParenCasts()); |
172 | if (!Literal || !Literal->isWide()) { |
173 | S.Diag(Arg->getBeginLoc(), diag::err_msvc_annotation_wide_str) |
174 | << Arg->getSourceRange(); |
175 | return true; |
176 | } |
177 | } |
178 | |
179 | return false; |
180 | } |
181 | |
182 | |
183 | |
184 | static bool SemaBuiltinAddressof(Sema &S, CallExpr *TheCall) { |
185 | if (checkArgCount(S, TheCall, 1)) |
186 | return true; |
187 | |
188 | ExprResult Arg(TheCall->getArg(0)); |
189 | QualType ResultType = S.CheckAddressOfOperand(Arg, TheCall->getBeginLoc()); |
190 | if (ResultType.isNull()) |
191 | return true; |
192 | |
193 | TheCall->setArg(0, Arg.get()); |
194 | TheCall->setType(ResultType); |
195 | return false; |
196 | } |
197 | |
198 | |
199 | |
200 | static bool SemaBuiltinPreserveAI(Sema &S, CallExpr *TheCall) { |
201 | if (checkArgCount(S, TheCall, 1)) |
202 | return true; |
203 | |
204 | TheCall->setType(TheCall->getArg(0)->getType()); |
205 | return false; |
206 | } |
207 | |
208 | |
209 | |
210 | |
211 | static bool SemaBuiltinAlignment(Sema &S, CallExpr *TheCall, unsigned ID) { |
212 | if (checkArgCount(S, TheCall, 2)) |
213 | return true; |
214 | |
215 | clang::Expr *Source = TheCall->getArg(0); |
216 | bool IsBooleanAlignBuiltin = ID == Builtin::BI__builtin_is_aligned; |
217 | |
218 | auto IsValidIntegerType = [](QualType Ty) { |
219 | return Ty->isIntegerType() && !Ty->isEnumeralType() && !Ty->isBooleanType(); |
220 | }; |
221 | QualType SrcTy = Source->getType(); |
222 | |
223 | if (SrcTy->canDecayToPointerType() && SrcTy->isArrayType()) { |
224 | SrcTy = S.Context.getDecayedType(SrcTy); |
225 | } |
226 | if ((!SrcTy->isPointerType() && !IsValidIntegerType(SrcTy)) || |
227 | SrcTy->isFunctionPointerType()) { |
228 | |
229 | |
230 | S.Diag(Source->getExprLoc(), diag::err_typecheck_expect_scalar_operand) |
231 | << SrcTy; |
232 | return true; |
233 | } |
234 | |
235 | clang::Expr *AlignOp = TheCall->getArg(1); |
236 | if (!IsValidIntegerType(AlignOp->getType())) { |
237 | S.Diag(AlignOp->getExprLoc(), diag::err_typecheck_expect_int) |
238 | << AlignOp->getType(); |
239 | return true; |
240 | } |
241 | Expr::EvalResult AlignResult; |
242 | unsigned MaxAlignmentBits = S.Context.getIntWidth(SrcTy) - 1; |
243 | |
244 | if (!AlignOp->isValueDependent() && |
245 | AlignOp->EvaluateAsInt(AlignResult, S.Context, |
246 | Expr::SE_AllowSideEffects)) { |
247 | llvm::APSInt AlignValue = AlignResult.Val.getInt(); |
248 | llvm::APSInt MaxValue( |
249 | llvm::APInt::getOneBitSet(MaxAlignmentBits + 1, MaxAlignmentBits)); |
250 | if (AlignValue < 1) { |
251 | S.Diag(AlignOp->getExprLoc(), diag::err_alignment_too_small) << 1; |
252 | return true; |
253 | } |
254 | if (llvm::APSInt::compareValues(AlignValue, MaxValue) > 0) { |
255 | S.Diag(AlignOp->getExprLoc(), diag::err_alignment_too_big) |
256 | << toString(MaxValue, 10); |
257 | return true; |
258 | } |
259 | if (!AlignValue.isPowerOf2()) { |
260 | S.Diag(AlignOp->getExprLoc(), diag::err_alignment_not_power_of_two); |
261 | return true; |
262 | } |
263 | if (AlignValue == 1) { |
264 | S.Diag(AlignOp->getExprLoc(), diag::warn_alignment_builtin_useless) |
265 | << IsBooleanAlignBuiltin; |
266 | } |
267 | } |
268 | |
269 | ExprResult SrcArg = S.PerformCopyInitialization( |
270 | InitializedEntity::InitializeParameter(S.Context, SrcTy, false), |
271 | SourceLocation(), Source); |
272 | if (SrcArg.isInvalid()) |
273 | return true; |
274 | TheCall->setArg(0, SrcArg.get()); |
275 | ExprResult AlignArg = |
276 | S.PerformCopyInitialization(InitializedEntity::InitializeParameter( |
277 | S.Context, AlignOp->getType(), false), |
278 | SourceLocation(), AlignOp); |
279 | if (AlignArg.isInvalid()) |
280 | return true; |
281 | TheCall->setArg(1, AlignArg.get()); |
282 | |
283 | |
284 | |
285 | TheCall->setType(IsBooleanAlignBuiltin ? S.Context.BoolTy : SrcTy); |
286 | return false; |
287 | } |
288 | |
289 | static bool SemaBuiltinOverflow(Sema &S, CallExpr *TheCall, |
290 | unsigned BuiltinID) { |
291 | if (checkArgCount(S, TheCall, 3)) |
292 | return true; |
293 | |
294 | |
295 | for (unsigned I = 0; I < 2; ++I) { |
296 | ExprResult Arg = S.DefaultFunctionArrayLvalueConversion(TheCall->getArg(I)); |
297 | if (Arg.isInvalid()) return true; |
298 | TheCall->setArg(I, Arg.get()); |
299 | |
300 | QualType Ty = Arg.get()->getType(); |
301 | if (!Ty->isIntegerType()) { |
302 | S.Diag(Arg.get()->getBeginLoc(), diag::err_overflow_builtin_must_be_int) |
303 | << Ty << Arg.get()->getSourceRange(); |
304 | return true; |
305 | } |
306 | } |
307 | |
308 | |
309 | |
310 | |
311 | { |
312 | ExprResult Arg = S.DefaultFunctionArrayLvalueConversion(TheCall->getArg(2)); |
313 | if (Arg.isInvalid()) return true; |
314 | TheCall->setArg(2, Arg.get()); |
315 | |
316 | QualType Ty = Arg.get()->getType(); |
317 | const auto *PtrTy = Ty->getAs<PointerType>(); |
318 | if (!PtrTy || |
319 | !PtrTy->getPointeeType()->isIntegerType() || |
320 | PtrTy->getPointeeType().isConstQualified()) { |
321 | S.Diag(Arg.get()->getBeginLoc(), |
322 | diag::err_overflow_builtin_must_be_ptr_int) |
323 | << Ty << Arg.get()->getSourceRange(); |
324 | return true; |
325 | } |
326 | } |
327 | |
328 | |
329 | |
330 | if (BuiltinID == Builtin::BI__builtin_mul_overflow) { |
331 | for (unsigned I = 0; I < 3; ++I) { |
332 | const auto Arg = TheCall->getArg(I); |
333 | |
334 | auto Ty = I < 2 ? Arg->getType() : Arg->getType()->getPointeeType(); |
335 | if (Ty->isExtIntType() && Ty->isSignedIntegerType() && |
336 | S.getASTContext().getIntWidth(Ty) > 128) |
337 | return S.Diag(Arg->getBeginLoc(), |
338 | diag::err_overflow_builtin_ext_int_max_size) |
339 | << 128; |
340 | } |
341 | } |
342 | |
343 | return false; |
344 | } |
345 | |
346 | static bool SemaBuiltinCallWithStaticChain(Sema &S, CallExpr *BuiltinCall) { |
347 | if (checkArgCount(S, BuiltinCall, 2)) |
348 | return true; |
349 | |
350 | SourceLocation BuiltinLoc = BuiltinCall->getBeginLoc(); |
351 | Expr *Builtin = BuiltinCall->getCallee()->IgnoreImpCasts(); |
352 | Expr *Call = BuiltinCall->getArg(0); |
353 | Expr *Chain = BuiltinCall->getArg(1); |
354 | |
355 | if (Call->getStmtClass() != Stmt::CallExprClass) { |
356 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_not_call) |
357 | << Call->getSourceRange(); |
358 | return true; |
359 | } |
360 | |
361 | auto CE = cast<CallExpr>(Call); |
362 | if (CE->getCallee()->getType()->isBlockPointerType()) { |
363 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_block_call) |
364 | << Call->getSourceRange(); |
365 | return true; |
366 | } |
367 | |
368 | const Decl *TargetDecl = CE->getCalleeDecl(); |
369 | if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(TargetDecl)) |
370 | if (FD->getBuiltinID()) { |
371 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_builtin_call) |
372 | << Call->getSourceRange(); |
373 | return true; |
374 | } |
375 | |
376 | if (isa<CXXPseudoDestructorExpr>(CE->getCallee()->IgnoreParens())) { |
377 | S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_pdtor_call) |
378 | << Call->getSourceRange(); |
379 | return true; |
380 | } |
381 | |
382 | ExprResult ChainResult = S.UsualUnaryConversions(Chain); |
383 | if (ChainResult.isInvalid()) |
384 | return true; |
385 | if (!ChainResult.get()->getType()->isPointerType()) { |
386 | S.Diag(BuiltinLoc, diag::err_second_argument_to_cwsc_not_pointer) |
387 | << Chain->getSourceRange(); |
388 | return true; |
389 | } |
390 | |
391 | QualType ReturnTy = CE->getCallReturnType(S.Context); |
392 | QualType ArgTys[2] = { ReturnTy, ChainResult.get()->getType() }; |
393 | QualType BuiltinTy = S.Context.getFunctionType( |
394 | ReturnTy, ArgTys, FunctionProtoType::ExtProtoInfo()); |
395 | QualType BuiltinPtrTy = S.Context.getPointerType(BuiltinTy); |
396 | |
397 | Builtin = |
398 | S.ImpCastExprToType(Builtin, BuiltinPtrTy, CK_BuiltinFnToFnPtr).get(); |
399 | |
400 | BuiltinCall->setType(CE->getType()); |
401 | BuiltinCall->setValueKind(CE->getValueKind()); |
402 | BuiltinCall->setObjectKind(CE->getObjectKind()); |
403 | BuiltinCall->setCallee(Builtin); |
404 | BuiltinCall->setArg(1, ChainResult.get()); |
405 | |
406 | return false; |
407 | } |
408 | |
409 | namespace { |
410 | |
411 | class EstimateSizeFormatHandler |
412 | : public analyze_format_string::FormatStringHandler { |
413 | size_t Size; |
414 | |
415 | public: |
416 | EstimateSizeFormatHandler(StringRef Format) |
417 | : Size(std::min(Format.find(0), Format.size()) + |
418 | 1 ) {} |
419 | |
420 | bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, |
421 | const char *, unsigned SpecifierLen) override { |
422 | |
423 | const size_t FieldWidth = computeFieldWidth(FS); |
424 | const size_t Precision = computePrecision(FS); |
425 | |
426 | |
427 | switch (FS.getConversionSpecifier().getKind()) { |
428 | |
429 | case analyze_format_string::ConversionSpecifier::cArg: |
430 | case analyze_format_string::ConversionSpecifier::CArg: |
431 | Size += std::max(FieldWidth, (size_t)1); |
432 | break; |
433 | |
434 | case analyze_format_string::ConversionSpecifier::dArg: |
435 | case analyze_format_string::ConversionSpecifier::DArg: |
436 | case analyze_format_string::ConversionSpecifier::iArg: |
437 | case analyze_format_string::ConversionSpecifier::oArg: |
438 | case analyze_format_string::ConversionSpecifier::OArg: |
439 | case analyze_format_string::ConversionSpecifier::uArg: |
440 | case analyze_format_string::ConversionSpecifier::UArg: |
441 | case analyze_format_string::ConversionSpecifier::xArg: |
442 | case analyze_format_string::ConversionSpecifier::XArg: |
443 | Size += std::max(FieldWidth, Precision); |
444 | break; |
445 | |
446 | |
447 | |
448 | case analyze_format_string::ConversionSpecifier::gArg: |
449 | case analyze_format_string::ConversionSpecifier::GArg: |
450 | |
451 | |
452 | case analyze_format_string::ConversionSpecifier::fArg: |
453 | case analyze_format_string::ConversionSpecifier::FArg: |
454 | Size += std::max(FieldWidth, 1 + |
455 | (Precision ? 1 + Precision |
456 | : 0) ); |
457 | break; |
458 | |
459 | |
460 | case analyze_format_string::ConversionSpecifier::eArg: |
461 | case analyze_format_string::ConversionSpecifier::EArg: |
462 | Size += |
463 | std::max(FieldWidth, |
464 | 1 + |
465 | (Precision ? 1 + Precision : 0) + |
466 | 1 + 2 ); |
467 | break; |
468 | |
469 | |
470 | case analyze_format_string::ConversionSpecifier::aArg: |
471 | case analyze_format_string::ConversionSpecifier::AArg: |
472 | Size += |
473 | std::max(FieldWidth, |
474 | 2 + 1 + |
475 | (Precision ? 1 + Precision : 0) + |
476 | 1 + 1 + 1 ); |
477 | break; |
478 | |
479 | |
480 | case analyze_format_string::ConversionSpecifier::sArg: |
481 | case analyze_format_string::ConversionSpecifier::SArg: |
482 | Size += FieldWidth; |
483 | break; |
484 | |
485 | |
486 | case analyze_format_string::ConversionSpecifier::pArg: |
487 | Size += std::max(FieldWidth, 2 + Precision); |
488 | break; |
489 | |
490 | |
491 | case analyze_format_string::ConversionSpecifier::PercentArg: |
492 | Size += 1; |
493 | break; |
494 | |
495 | default: |
496 | break; |
497 | } |
498 | |
499 | Size += FS.hasPlusPrefix() || FS.hasSpacePrefix(); |
500 | |
501 | if (FS.hasAlternativeForm()) { |
502 | switch (FS.getConversionSpecifier().getKind()) { |
503 | default: |
504 | break; |
505 | |
506 | case analyze_format_string::ConversionSpecifier::oArg: |
507 | Size += 1; |
508 | break; |
509 | |
510 | case analyze_format_string::ConversionSpecifier::xArg: |
511 | case analyze_format_string::ConversionSpecifier::XArg: |
512 | Size += 2; |
513 | break; |
514 | |
515 | case analyze_format_string::ConversionSpecifier::aArg: |
516 | case analyze_format_string::ConversionSpecifier::AArg: |
517 | case analyze_format_string::ConversionSpecifier::eArg: |
518 | case analyze_format_string::ConversionSpecifier::EArg: |
519 | case analyze_format_string::ConversionSpecifier::fArg: |
520 | case analyze_format_string::ConversionSpecifier::FArg: |
521 | case analyze_format_string::ConversionSpecifier::gArg: |
522 | case analyze_format_string::ConversionSpecifier::GArg: |
523 | Size += (Precision ? 0 : 1); |
524 | break; |
525 | } |
526 | } |
527 | assert(SpecifierLen <= Size && "no underflow"); |
528 | Size -= SpecifierLen; |
529 | return true; |
530 | } |
531 | |
532 | size_t getSizeLowerBound() const { return Size; } |
533 | |
534 | private: |
535 | static size_t computeFieldWidth(const analyze_printf::PrintfSpecifier &FS) { |
536 | const analyze_format_string::OptionalAmount &FW = FS.getFieldWidth(); |
537 | size_t FieldWidth = 0; |
538 | if (FW.getHowSpecified() == analyze_format_string::OptionalAmount::Constant) |
539 | FieldWidth = FW.getConstantAmount(); |
540 | return FieldWidth; |
541 | } |
542 | |
543 | static size_t computePrecision(const analyze_printf::PrintfSpecifier &FS) { |
544 | const analyze_format_string::OptionalAmount &FW = FS.getPrecision(); |
545 | size_t Precision = 0; |
546 | |
547 | |
548 | switch (FW.getHowSpecified()) { |
549 | case analyze_format_string::OptionalAmount::NotSpecified: |
550 | switch (FS.getConversionSpecifier().getKind()) { |
551 | default: |
552 | break; |
553 | case analyze_format_string::ConversionSpecifier::dArg: |
554 | case analyze_format_string::ConversionSpecifier::DArg: |
555 | case analyze_format_string::ConversionSpecifier::iArg: |
556 | Precision = 1; |
557 | break; |
558 | case analyze_format_string::ConversionSpecifier::oArg: |
559 | case analyze_format_string::ConversionSpecifier::OArg: |
560 | case analyze_format_string::ConversionSpecifier::uArg: |
561 | case analyze_format_string::ConversionSpecifier::UArg: |
562 | case analyze_format_string::ConversionSpecifier::xArg: |
563 | case analyze_format_string::ConversionSpecifier::XArg: |
564 | Precision = 1; |
565 | break; |
566 | case analyze_format_string::ConversionSpecifier::fArg: |
567 | case analyze_format_string::ConversionSpecifier::FArg: |
568 | case analyze_format_string::ConversionSpecifier::eArg: |
569 | case analyze_format_string::ConversionSpecifier::EArg: |
570 | case analyze_format_string::ConversionSpecifier::gArg: |
571 | case analyze_format_string::ConversionSpecifier::GArg: |
572 | Precision = 6; |
573 | break; |
574 | case analyze_format_string::ConversionSpecifier::pArg: |
575 | Precision = 1; |
576 | break; |
577 | } |
578 | break; |
579 | case analyze_format_string::OptionalAmount::Constant: |
580 | Precision = FW.getConstantAmount(); |
581 | break; |
582 | default: |
583 | break; |
584 | } |
585 | return Precision; |
586 | } |
587 | }; |
588 | |
589 | } |
590 | |
591 | |
592 | |
593 | |
594 | void Sema::checkFortifiedBuiltinMemoryFunction(FunctionDecl *FD, |
595 | CallExpr *TheCall) { |
596 | |
597 | |
598 | |
599 | if (TheCall->isValueDependent() || TheCall->isTypeDependent() || |
600 | isConstantEvaluated()) |
601 | return; |
602 | |
603 | unsigned BuiltinID = FD->getBuiltinID(true); |
604 | if (!BuiltinID) |
605 | return; |
606 | |
607 | const TargetInfo &TI = getASTContext().getTargetInfo(); |
608 | unsigned SizeTypeWidth = TI.getTypeWidth(TI.getSizeType()); |
609 | |
610 | unsigned DiagID = 0; |
611 | bool IsChkVariant = false; |
612 | Optional<llvm::APSInt> UsedSize; |
613 | unsigned SizeIndex, ObjectIndex; |
614 | switch (BuiltinID) { |
615 | default: |
616 | return; |
617 | case Builtin::BIsprintf: |
618 | case Builtin::BI__builtin___sprintf_chk: { |
619 | size_t FormatIndex = BuiltinID == Builtin::BIsprintf ? 1 : 3; |
620 | auto *FormatExpr = TheCall->getArg(FormatIndex)->IgnoreParenImpCasts(); |
621 | |
622 | if (auto *Format = dyn_cast<StringLiteral>(FormatExpr)) { |
623 | |
624 | if (!Format->isAscii() && !Format->isUTF8()) |
625 | return; |
626 | |
627 | StringRef FormatStrRef = Format->getString(); |
628 | EstimateSizeFormatHandler H(FormatStrRef); |
629 | const char *FormatBytes = FormatStrRef.data(); |
630 | const ConstantArrayType *T = |
631 | Context.getAsConstantArrayType(Format->getType()); |
632 | assert(T && "String literal not of constant array type!"); |
633 | size_t TypeSize = T->getSize().getZExtValue(); |
634 | |
635 | |
636 | size_t StrLen = |
637 | std::min(std::max(TypeSize, size_t(1)) - 1, FormatStrRef.find(0)); |
638 | if (!analyze_format_string::ParsePrintfString( |
639 | H, FormatBytes, FormatBytes + StrLen, getLangOpts(), |
640 | Context.getTargetInfo(), false)) { |
641 | DiagID = diag::warn_fortify_source_format_overflow; |
642 | UsedSize = llvm::APSInt::getUnsigned(H.getSizeLowerBound()) |
643 | .extOrTrunc(SizeTypeWidth); |
644 | if (BuiltinID == Builtin::BI__builtin___sprintf_chk) { |
645 | IsChkVariant = true; |
646 | ObjectIndex = 2; |
647 | } else { |
648 | IsChkVariant = false; |
649 | ObjectIndex = 0; |
650 | } |
651 | break; |
652 | } |
653 | } |
654 | return; |
655 | } |
656 | case Builtin::BI__builtin___memcpy_chk: |
657 | case Builtin::BI__builtin___memmove_chk: |
658 | case Builtin::BI__builtin___memset_chk: |
659 | case Builtin::BI__builtin___strlcat_chk: |
660 | case Builtin::BI__builtin___strlcpy_chk: |
661 | case Builtin::BI__builtin___strncat_chk: |
662 | case Builtin::BI__builtin___strncpy_chk: |
663 | case Builtin::BI__builtin___stpncpy_chk: |
664 | case Builtin::BI__builtin___memccpy_chk: |
665 | case Builtin::BI__builtin___mempcpy_chk: { |
666 | DiagID = diag::warn_builtin_chk_overflow; |
667 | IsChkVariant = true; |
668 | SizeIndex = TheCall->getNumArgs() - 2; |
669 | ObjectIndex = TheCall->getNumArgs() - 1; |
670 | break; |
671 | } |
672 | |
673 | case Builtin::BI__builtin___snprintf_chk: |
674 | case Builtin::BI__builtin___vsnprintf_chk: { |
675 | DiagID = diag::warn_builtin_chk_overflow; |
676 | IsChkVariant = true; |
677 | SizeIndex = 1; |
678 | ObjectIndex = 3; |
679 | break; |
680 | } |
681 | |
682 | case Builtin::BIstrncat: |
683 | case Builtin::BI__builtin_strncat: |
684 | case Builtin::BIstrncpy: |
685 | case Builtin::BI__builtin_strncpy: |
686 | case Builtin::BIstpncpy: |
687 | case Builtin::BI__builtin_stpncpy: { |
688 | |
689 | |
690 | |
691 | |
692 | |
693 | DiagID = diag::warn_fortify_source_size_mismatch; |
694 | SizeIndex = TheCall->getNumArgs() - 1; |
695 | ObjectIndex = 0; |
696 | break; |
697 | } |
698 | |
699 | case Builtin::BImemcpy: |
700 | case Builtin::BI__builtin_memcpy: |
701 | case Builtin::BImemmove: |
702 | case Builtin::BI__builtin_memmove: |
703 | case Builtin::BImemset: |
704 | case Builtin::BI__builtin_memset: |
705 | case Builtin::BImempcpy: |
706 | case Builtin::BI__builtin_mempcpy: { |
707 | DiagID = diag::warn_fortify_source_overflow; |
708 | SizeIndex = TheCall->getNumArgs() - 1; |
709 | ObjectIndex = 0; |
710 | break; |
711 | } |
712 | case Builtin::BIsnprintf: |
713 | case Builtin::BI__builtin_snprintf: |
714 | case Builtin::BIvsnprintf: |
715 | case Builtin::BI__builtin_vsnprintf: { |
716 | DiagID = diag::warn_fortify_source_size_mismatch; |
717 | SizeIndex = 1; |
718 | ObjectIndex = 0; |
719 | break; |
720 | } |
721 | } |
722 | |
723 | llvm::APSInt ObjectSize; |
724 | |
725 | |
726 | if (IsChkVariant) { |
727 | Expr::EvalResult Result; |
728 | Expr *SizeArg = TheCall->getArg(ObjectIndex); |
729 | if (!SizeArg->EvaluateAsInt(Result, getASTContext())) |
730 | return; |
731 | ObjectSize = Result.Val.getInt(); |
732 | |
733 | |
734 | } else { |
735 | |
736 | |
737 | |
738 | int BOSType = 0; |
739 | if (const auto *POS = |
740 | FD->getParamDecl(ObjectIndex)->getAttr<PassObjectSizeAttr>()) |
741 | BOSType = POS->getType(); |
742 | |
743 | Expr *ObjArg = TheCall->getArg(ObjectIndex); |
744 | uint64_t Result; |
745 | if (!ObjArg->tryEvaluateObjectSize(Result, getASTContext(), BOSType)) |
746 | return; |
747 | |
748 | ObjectSize = llvm::APSInt::getUnsigned(Result).extOrTrunc(SizeTypeWidth); |
749 | } |
750 | |
751 | |
752 | if (!UsedSize) { |
753 | Expr::EvalResult Result; |
754 | Expr *UsedSizeArg = TheCall->getArg(SizeIndex); |
755 | if (!UsedSizeArg->EvaluateAsInt(Result, getASTContext())) |
756 | return; |
757 | UsedSize = Result.Val.getInt().extOrTrunc(SizeTypeWidth); |
758 | } |
759 | |
760 | if (UsedSize.getValue().ule(ObjectSize)) |
761 | return; |
762 | |
763 | StringRef FunctionName = getASTContext().BuiltinInfo.getName(BuiltinID); |
764 | |
765 | |
766 | if (IsChkVariant) { |
767 | FunctionName = FunctionName.drop_front(std::strlen("__builtin___")); |
768 | FunctionName = FunctionName.drop_back(std::strlen("_chk")); |
769 | } else if (FunctionName.startswith("__builtin_")) { |
770 | FunctionName = FunctionName.drop_front(std::strlen("__builtin_")); |
771 | } |
772 | |
773 | DiagRuntimeBehavior(TheCall->getBeginLoc(), TheCall, |
774 | PDiag(DiagID) |
775 | << FunctionName << toString(ObjectSize, 10) |
776 | << toString(UsedSize.getValue(), 10)); |
777 | } |
778 | |
779 | static bool SemaBuiltinSEHScopeCheck(Sema &SemaRef, CallExpr *TheCall, |
780 | Scope::ScopeFlags NeededScopeFlags, |
781 | unsigned DiagID) { |
782 | |
783 | |
784 | |
785 | if (SemaRef.inTemplateInstantiation()) |
786 | return false; |
787 | |
788 | Scope *S = SemaRef.getCurScope(); |
789 | while (S && !S->isSEHExceptScope()) |
790 | S = S->getParent(); |
791 | if (!S || !(S->getFlags() & NeededScopeFlags)) { |
792 | auto *DRE = cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
793 | SemaRef.Diag(TheCall->getExprLoc(), DiagID) |
794 | << DRE->getDecl()->getIdentifier(); |
795 | return true; |
796 | } |
797 | |
798 | return false; |
799 | } |
800 | |
801 | static inline bool isBlockPointer(Expr *Arg) { |
802 | return Arg->getType()->isBlockPointerType(); |
803 | } |
804 | |
805 | |
806 | |
807 | static bool checkOpenCLBlockArgs(Sema &S, Expr *BlockArg) { |
808 | const BlockPointerType *BPT = |
809 | cast<BlockPointerType>(BlockArg->getType().getCanonicalType()); |
810 | ArrayRef<QualType> Params = |
811 | BPT->getPointeeType()->castAs<FunctionProtoType>()->getParamTypes(); |
812 | unsigned ArgCounter = 0; |
813 | bool IllegalParams = false; |
814 | |
815 | |
816 | for (ArrayRef<QualType>::iterator I = Params.begin(), E = Params.end(); |
817 | I != E; ++I, ++ArgCounter) { |
818 | if (!(*I)->isPointerType() || !(*I)->getPointeeType()->isVoidType() || |
819 | (*I)->getPointeeType().getQualifiers().getAddressSpace() != |
820 | LangAS::opencl_local) { |
821 | |
822 | |
823 | |
824 | SourceLocation ErrorLoc; |
825 | if (isa<BlockExpr>(BlockArg)) { |
826 | BlockDecl *BD = cast<BlockExpr>(BlockArg)->getBlockDecl(); |
827 | ErrorLoc = BD->getParamDecl(ArgCounter)->getBeginLoc(); |
828 | } else if (isa<DeclRefExpr>(BlockArg)) { |
829 | ErrorLoc = cast<DeclRefExpr>(BlockArg)->getBeginLoc(); |
830 | } |
831 | S.Diag(ErrorLoc, |
832 | diag::err_opencl_enqueue_kernel_blocks_non_local_void_args); |
833 | IllegalParams = true; |
834 | } |
835 | } |
836 | |
837 | return IllegalParams; |
838 | } |
839 | |
840 | static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) { |
841 | if (!S.getOpenCLOptions().isSupported("cl_khr_subgroups", S.getLangOpts())) { |
842 | S.Diag(Call->getBeginLoc(), diag::err_opencl_requires_extension) |
843 | << 1 << Call->getDirectCallee() << "cl_khr_subgroups"; |
844 | return true; |
845 | } |
846 | return false; |
847 | } |
848 | |
849 | static bool SemaOpenCLBuiltinNDRangeAndBlock(Sema &S, CallExpr *TheCall) { |
850 | if (checkArgCount(S, TheCall, 2)) |
851 | return true; |
852 | |
853 | if (checkOpenCLSubgroupExt(S, TheCall)) |
854 | return true; |
855 | |
856 | |
857 | Expr *NDRangeArg = TheCall->getArg(0); |
858 | if (NDRangeArg->getType().getUnqualifiedType().getAsString() != "ndrange_t") { |
859 | S.Diag(NDRangeArg->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
860 | << TheCall->getDirectCallee() << "'ndrange_t'"; |
861 | return true; |
862 | } |
863 | |
864 | Expr *BlockArg = TheCall->getArg(1); |
865 | if (!isBlockPointer(BlockArg)) { |
866 | S.Diag(BlockArg->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
867 | << TheCall->getDirectCallee() << "block"; |
868 | return true; |
869 | } |
870 | return checkOpenCLBlockArgs(S, BlockArg); |
871 | } |
872 | |
873 | |
874 | |
875 | |
876 | static bool SemaOpenCLBuiltinKernelWorkGroupSize(Sema &S, CallExpr *TheCall) { |
877 | if (checkArgCount(S, TheCall, 1)) |
878 | return true; |
879 | |
880 | Expr *BlockArg = TheCall->getArg(0); |
881 | if (!isBlockPointer(BlockArg)) { |
882 | S.Diag(BlockArg->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
883 | << TheCall->getDirectCallee() << "block"; |
884 | return true; |
885 | } |
886 | return checkOpenCLBlockArgs(S, BlockArg); |
887 | } |
888 | |
889 | |
890 | static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, |
891 | const QualType &IntType); |
892 | |
893 | static bool checkOpenCLEnqueueLocalSizeArgs(Sema &S, CallExpr *TheCall, |
894 | unsigned Start, unsigned End) { |
895 | bool IllegalParams = false; |
896 | for (unsigned I = Start; I <= End; ++I) |
897 | IllegalParams |= checkOpenCLEnqueueIntType(S, TheCall->getArg(I), |
898 | S.Context.getSizeType()); |
899 | return IllegalParams; |
900 | } |
901 | |
902 | |
903 | |
904 | static bool checkOpenCLEnqueueVariadicArgs(Sema &S, CallExpr *TheCall, |
905 | Expr *BlockArg, |
906 | unsigned NumNonVarArgs) { |
907 | const BlockPointerType *BPT = |
908 | cast<BlockPointerType>(BlockArg->getType().getCanonicalType()); |
909 | unsigned NumBlockParams = |
910 | BPT->getPointeeType()->castAs<FunctionProtoType>()->getNumParams(); |
911 | unsigned TotalNumArgs = TheCall->getNumArgs(); |
912 | |
913 | |
914 | |
915 | if (TotalNumArgs != NumBlockParams + NumNonVarArgs) { |
916 | S.Diag(TheCall->getBeginLoc(), |
917 | diag::err_opencl_enqueue_kernel_local_size_args); |
918 | return true; |
919 | } |
920 | |
921 | |
922 | return checkOpenCLEnqueueLocalSizeArgs(S, TheCall, NumNonVarArgs, |
923 | TotalNumArgs - 1); |
924 | } |
925 | |
926 | |
927 | |
928 | |
929 | |
930 | |
931 | |
932 | |
933 | |
934 | |
935 | |
936 | |
937 | |
938 | |
939 | |
940 | |
941 | |
942 | |
943 | |
944 | |
945 | |
946 | |
947 | |
948 | |
949 | |
950 | |
951 | |
952 | static bool SemaOpenCLBuiltinEnqueueKernel(Sema &S, CallExpr *TheCall) { |
953 | unsigned NumArgs = TheCall->getNumArgs(); |
954 | |
955 | if (NumArgs < 4) { |
956 | S.Diag(TheCall->getBeginLoc(), |
957 | diag::err_typecheck_call_too_few_args_at_least) |
958 | << 0 << 4 << NumArgs; |
959 | return true; |
960 | } |
961 | |
962 | Expr *Arg0 = TheCall->getArg(0); |
963 | Expr *Arg1 = TheCall->getArg(1); |
964 | Expr *Arg2 = TheCall->getArg(2); |
965 | Expr *Arg3 = TheCall->getArg(3); |
966 | |
967 | |
968 | if (!Arg0->getType()->isQueueT()) { |
969 | S.Diag(TheCall->getArg(0)->getBeginLoc(), |
970 | diag::err_opencl_builtin_expected_type) |
971 | << TheCall->getDirectCallee() << S.Context.OCLQueueTy; |
972 | return true; |
973 | } |
974 | |
975 | |
976 | if (!Arg1->getType()->isIntegerType()) { |
977 | S.Diag(TheCall->getArg(1)->getBeginLoc(), |
978 | diag::err_opencl_builtin_expected_type) |
979 | << TheCall->getDirectCallee() << "'kernel_enqueue_flags_t' (i.e. uint)"; |
980 | return true; |
981 | } |
982 | |
983 | |
984 | if (Arg2->getType().getUnqualifiedType().getAsString() != "ndrange_t") { |
985 | S.Diag(TheCall->getArg(2)->getBeginLoc(), |
986 | diag::err_opencl_builtin_expected_type) |
987 | << TheCall->getDirectCallee() << "'ndrange_t'"; |
988 | return true; |
989 | } |
990 | |
991 | |
992 | |
993 | if (NumArgs == 4) { |
994 | |
995 | if (!isBlockPointer(Arg3)) { |
996 | S.Diag(Arg3->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
997 | << TheCall->getDirectCallee() << "block"; |
998 | return true; |
999 | } |
1000 | |
1001 | const BlockPointerType *BPT = |
1002 | cast<BlockPointerType>(Arg3->getType().getCanonicalType()); |
1003 | if (BPT->getPointeeType()->castAs<FunctionProtoType>()->getNumParams() > 0) { |
1004 | S.Diag(Arg3->getBeginLoc(), |
1005 | diag::err_opencl_enqueue_kernel_blocks_no_args); |
1006 | return true; |
1007 | } |
1008 | return false; |
1009 | } |
1010 | |
1011 | if (isBlockPointer(Arg3)) |
1012 | return (checkOpenCLBlockArgs(S, Arg3) || |
1013 | checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg3, 4)); |
1014 | |
1015 | if (NumArgs >= 7) { |
1016 | |
1017 | Expr *Arg6 = TheCall->getArg(6); |
1018 | if (!isBlockPointer(Arg6)) { |
1019 | S.Diag(Arg6->getBeginLoc(), diag::err_opencl_builtin_expected_type) |
1020 | << TheCall->getDirectCallee() << "block"; |
1021 | return true; |
1022 | } |
1023 | if (checkOpenCLBlockArgs(S, Arg6)) |
1024 | return true; |
1025 | |
1026 | |
1027 | if (!Arg3->getType()->isIntegerType()) { |
1028 | S.Diag(TheCall->getArg(3)->getBeginLoc(), |
1029 | diag::err_opencl_builtin_expected_type) |
1030 | << TheCall->getDirectCallee() << "integer"; |
1031 | return true; |
1032 | } |
1033 | |
1034 | Expr *Arg4 = TheCall->getArg(4); |
1035 | Expr *Arg5 = TheCall->getArg(5); |
1036 | |
1037 | |
1038 | if (!Arg4->isNullPointerConstant(S.Context, |
1039 | Expr::NPC_ValueDependentIsNotNull) && |
1040 | !Arg4->getType()->getPointeeOrArrayElementType()->isClkEventT()) { |
1041 | S.Diag(TheCall->getArg(4)->getBeginLoc(), |
1042 | diag::err_opencl_builtin_expected_type) |
1043 | << TheCall->getDirectCallee() |
1044 | << S.Context.getPointerType(S.Context.OCLClkEventTy); |
1045 | return true; |
1046 | } |
1047 | |
1048 | |
1049 | if (!Arg5->isNullPointerConstant(S.Context, |
1050 | Expr::NPC_ValueDependentIsNotNull) && |
1051 | !(Arg5->getType()->isPointerType() && |
1052 | Arg5->getType()->getPointeeType()->isClkEventT())) { |
1053 | S.Diag(TheCall->getArg(5)->getBeginLoc(), |
1054 | diag::err_opencl_builtin_expected_type) |
1055 | << TheCall->getDirectCallee() |
1056 | << S.Context.getPointerType(S.Context.OCLClkEventTy); |
1057 | return true; |
1058 | } |
1059 | |
1060 | if (NumArgs == 7) |
1061 | return false; |
1062 | |
1063 | return checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg6, 7); |
1064 | } |
1065 | |
1066 | |
1067 | S.Diag(TheCall->getBeginLoc(), |
1068 | diag::err_opencl_enqueue_kernel_incorrect_args); |
1069 | return true; |
1070 | } |
1071 | |
1072 | |
1073 | static OpenCLAccessAttr *getOpenCLArgAccess(const Decl *D) { |
1074 | return D->getAttr<OpenCLAccessAttr>(); |
1075 | } |
1076 | |
1077 | |
1078 | static bool checkOpenCLPipeArg(Sema &S, CallExpr *Call) { |
1079 | const Expr *Arg0 = Call->getArg(0); |
1080 | |
1081 | if (!Arg0->getType()->isPipeType()) { |
1082 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_first_arg) |
1083 | << Call->getDirectCallee() << Arg0->getSourceRange(); |
1084 | return true; |
1085 | } |
1086 | OpenCLAccessAttr *AccessQual = |
1087 | getOpenCLArgAccess(cast<DeclRefExpr>(Arg0)->getDecl()); |
1088 | |
1089 | |
1090 | |
1091 | |
1092 | switch (Call->getDirectCallee()->getBuiltinID()) { |
1093 | case Builtin::BIread_pipe: |
1094 | case Builtin::BIreserve_read_pipe: |
1095 | case Builtin::BIcommit_read_pipe: |
1096 | case Builtin::BIwork_group_reserve_read_pipe: |
1097 | case Builtin::BIsub_group_reserve_read_pipe: |
1098 | case Builtin::BIwork_group_commit_read_pipe: |
1099 | case Builtin::BIsub_group_commit_read_pipe: |
1100 | if (!(!AccessQual || AccessQual->isReadOnly())) { |
1101 | S.Diag(Arg0->getBeginLoc(), |
1102 | diag::err_opencl_builtin_pipe_invalid_access_modifier) |
1103 | << "read_only" << Arg0->getSourceRange(); |
1104 | return true; |
1105 | } |
1106 | break; |
1107 | case Builtin::BIwrite_pipe: |
1108 | case Builtin::BIreserve_write_pipe: |
1109 | case Builtin::BIcommit_write_pipe: |
1110 | case Builtin::BIwork_group_reserve_write_pipe: |
1111 | case Builtin::BIsub_group_reserve_write_pipe: |
1112 | case Builtin::BIwork_group_commit_write_pipe: |
1113 | case Builtin::BIsub_group_commit_write_pipe: |
1114 | if (!(AccessQual && AccessQual->isWriteOnly())) { |
1115 | S.Diag(Arg0->getBeginLoc(), |
1116 | diag::err_opencl_builtin_pipe_invalid_access_modifier) |
1117 | << "write_only" << Arg0->getSourceRange(); |
1118 | return true; |
1119 | } |
1120 | break; |
1121 | default: |
1122 | break; |
1123 | } |
1124 | return false; |
1125 | } |
1126 | |
1127 | |
1128 | static bool checkOpenCLPipePacketType(Sema &S, CallExpr *Call, unsigned Idx) { |
1129 | const Expr *Arg0 = Call->getArg(0); |
1130 | const Expr *ArgIdx = Call->getArg(Idx); |
1131 | const PipeType *PipeTy = cast<PipeType>(Arg0->getType()); |
1132 | const QualType EltTy = PipeTy->getElementType(); |
1133 | const PointerType *ArgTy = ArgIdx->getType()->getAs<PointerType>(); |
1134 | |
1135 | |
1136 | if (!ArgTy || |
1137 | !S.Context.hasSameType( |
1138 | EltTy, ArgTy->getPointeeType()->getCanonicalTypeInternal())) { |
1139 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1140 | << Call->getDirectCallee() << S.Context.getPointerType(EltTy) |
1141 | << ArgIdx->getType() << ArgIdx->getSourceRange(); |
1142 | return true; |
1143 | } |
1144 | return false; |
1145 | } |
1146 | |
1147 | |
1148 | |
1149 | |
1150 | |
1151 | static bool SemaBuiltinRWPipe(Sema &S, CallExpr *Call) { |
1152 | |
1153 | |
1154 | switch (Call->getNumArgs()) { |
1155 | case 2: |
1156 | if (checkOpenCLPipeArg(S, Call)) |
1157 | return true; |
1158 | |
1159 | |
1160 | |
1161 | if (checkOpenCLPipePacketType(S, Call, 1)) |
1162 | return true; |
1163 | break; |
1164 | |
1165 | case 4: { |
1166 | if (checkOpenCLPipeArg(S, Call)) |
1167 | return true; |
1168 | |
1169 | |
1170 | |
1171 | if (!Call->getArg(1)->getType()->isReserveIDT()) { |
1172 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1173 | << Call->getDirectCallee() << S.Context.OCLReserveIDTy |
1174 | << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); |
1175 | return true; |
1176 | } |
1177 | |
1178 | |
1179 | const Expr *Arg2 = Call->getArg(2); |
1180 | if (!Arg2->getType()->isIntegerType() && |
1181 | !Arg2->getType()->isUnsignedIntegerType()) { |
1182 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1183 | << Call->getDirectCallee() << S.Context.UnsignedIntTy |
1184 | << Arg2->getType() << Arg2->getSourceRange(); |
1185 | return true; |
1186 | } |
1187 | |
1188 | |
1189 | if (checkOpenCLPipePacketType(S, Call, 3)) |
1190 | return true; |
1191 | } break; |
1192 | default: |
1193 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_arg_num) |
1194 | << Call->getDirectCallee() << Call->getSourceRange(); |
1195 | return true; |
1196 | } |
1197 | |
1198 | return false; |
1199 | } |
1200 | |
1201 | |
1202 | |
1203 | |
1204 | |
1205 | |
1206 | static bool SemaBuiltinReserveRWPipe(Sema &S, CallExpr *Call) { |
1207 | if (checkArgCount(S, Call, 2)) |
1208 | return true; |
1209 | |
1210 | if (checkOpenCLPipeArg(S, Call)) |
1211 | return true; |
1212 | |
1213 | |
1214 | if (!Call->getArg(1)->getType()->isIntegerType() && |
1215 | !Call->getArg(1)->getType()->isUnsignedIntegerType()) { |
1216 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1217 | << Call->getDirectCallee() << S.Context.UnsignedIntTy |
1218 | << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); |
1219 | return true; |
1220 | } |
1221 | |
1222 | |
1223 | |
1224 | |
1225 | Call->setType(S.Context.OCLReserveIDTy); |
1226 | |
1227 | return false; |
1228 | } |
1229 | |
1230 | |
1231 | |
1232 | |
1233 | |
1234 | |
1235 | static bool SemaBuiltinCommitRWPipe(Sema &S, CallExpr *Call) { |
1236 | if (checkArgCount(S, Call, 2)) |
1237 | return true; |
1238 | |
1239 | if (checkOpenCLPipeArg(S, Call)) |
1240 | return true; |
1241 | |
1242 | |
1243 | if (!Call->getArg(1)->getType()->isReserveIDT()) { |
1244 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_invalid_arg) |
1245 | << Call->getDirectCallee() << S.Context.OCLReserveIDTy |
1246 | << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); |
1247 | return true; |
1248 | } |
1249 | |
1250 | return false; |
1251 | } |
1252 | |
1253 | |
1254 | |
1255 | |
1256 | |
1257 | |
1258 | static bool SemaBuiltinPipePackets(Sema &S, CallExpr *Call) { |
1259 | if (checkArgCount(S, Call, 1)) |
1260 | return true; |
1261 | |
1262 | if (!Call->getArg(0)->getType()->isPipeType()) { |
1263 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_pipe_first_arg) |
1264 | << Call->getDirectCallee() << Call->getArg(0)->getSourceRange(); |
1265 | return true; |
1266 | } |
1267 | |
1268 | return false; |
1269 | } |
1270 | |
1271 | |
1272 | |
1273 | |
1274 | |
1275 | |
1276 | |
1277 | static bool SemaOpenCLBuiltinToAddr(Sema &S, unsigned BuiltinID, |
1278 | CallExpr *Call) { |
1279 | if (checkArgCount(S, Call, 1)) |
1280 | return true; |
1281 | |
1282 | auto RT = Call->getArg(0)->getType(); |
1283 | if (!RT->isPointerType() || RT->getPointeeType() |
1284 | .getAddressSpace() == LangAS::opencl_constant) { |
1285 | S.Diag(Call->getBeginLoc(), diag::err_opencl_builtin_to_addr_invalid_arg) |
1286 | << Call->getArg(0) << Call->getDirectCallee() << Call->getSourceRange(); |
1287 | return true; |
1288 | } |
1289 | |
1290 | if (RT->getPointeeType().getAddressSpace() != LangAS::opencl_generic) { |
1291 | S.Diag(Call->getArg(0)->getBeginLoc(), |
1292 | diag::warn_opencl_generic_address_space_arg) |
1293 | << Call->getDirectCallee()->getNameInfo().getAsString() |
1294 | << Call->getArg(0)->getSourceRange(); |
1295 | } |
1296 | |
1297 | RT = RT->getPointeeType(); |
1298 | auto Qual = RT.getQualifiers(); |
1299 | switch (BuiltinID) { |
1300 | case Builtin::BIto_global: |
1301 | Qual.setAddressSpace(LangAS::opencl_global); |
1302 | break; |
1303 | case Builtin::BIto_local: |
1304 | Qual.setAddressSpace(LangAS::opencl_local); |
1305 | break; |
1306 | case Builtin::BIto_private: |
1307 | Qual.setAddressSpace(LangAS::opencl_private); |
1308 | break; |
1309 | default: |
1310 | llvm_unreachable("Invalid builtin function"); |
1311 | } |
1312 | Call->setType(S.Context.getPointerType(S.Context.getQualifiedType( |
1313 | RT.getUnqualifiedType(), Qual))); |
1314 | |
1315 | return false; |
1316 | } |
1317 | |
1318 | static ExprResult SemaBuiltinLaunder(Sema &S, CallExpr *TheCall) { |
1319 | if (checkArgCount(S, TheCall, 1)) |
1320 | return ExprError(); |
1321 | |
1322 | |
1323 | |
1324 | |
1325 | |
1326 | |
1327 | QualType ParamTy = [&]() { |
1328 | QualType ArgTy = TheCall->getArg(0)->getType(); |
1329 | if (const ArrayType *Ty = ArgTy->getAsArrayTypeUnsafe()) |
1330 | return S.Context.getPointerType(Ty->getElementType()); |
1331 | if (ArgTy->isFunctionType()) { |
1332 | return S.Context.getPointerType(ArgTy); |
1333 | } |
1334 | return ArgTy; |
1335 | }(); |
1336 | |
1337 | TheCall->setType(ParamTy); |
1338 | |
1339 | auto DiagSelect = [&]() -> llvm::Optional<unsigned> { |
1340 | if (!ParamTy->isPointerType()) |
1341 | return 0; |
1342 | if (ParamTy->isFunctionPointerType()) |
1343 | return 1; |
1344 | if (ParamTy->isVoidPointerType()) |
1345 | return 2; |
1346 | return llvm::Optional<unsigned>{}; |
1347 | }(); |
1348 | if (DiagSelect.hasValue()) { |
1349 | S.Diag(TheCall->getBeginLoc(), diag::err_builtin_launder_invalid_arg) |
1350 | << DiagSelect.getValue() << TheCall->getSourceRange(); |
1351 | return ExprError(); |
1352 | } |
1353 | |
1354 | |
1355 | |
1356 | |
1357 | |
1358 | |
1359 | |
1360 | if (S.RequireCompleteType(TheCall->getBeginLoc(), ParamTy->getPointeeType(), |
1361 | diag::err_incomplete_type)) |
1362 | return ExprError(); |
1363 | |
1364 | assert(ParamTy->getPointeeType()->isObjectType() && |
1365 | "Unhandled non-object pointer case"); |
1366 | |
1367 | InitializedEntity Entity = |
1368 | InitializedEntity::InitializeParameter(S.Context, ParamTy, false); |
1369 | ExprResult Arg = |
1370 | S.PerformCopyInitialization(Entity, SourceLocation(), TheCall->getArg(0)); |
1371 | if (Arg.isInvalid()) |
1372 | return ExprError(); |
1373 | TheCall->setArg(0, Arg.get()); |
1374 | |
1375 | return TheCall; |
1376 | } |
1377 | |
1378 | |
1379 | |
1380 | static bool |
1381 | CheckBuiltinTargetSupport(Sema &S, unsigned BuiltinID, CallExpr *TheCall, |
1382 | ArrayRef<llvm::Triple::ArchType> SupportedArchs) { |
1383 | llvm::Triple::ArchType CurArch = |
1384 | S.getASTContext().getTargetInfo().getTriple().getArch(); |
1385 | if (llvm::is_contained(SupportedArchs, CurArch)) |
1386 | return false; |
1387 | S.Diag(TheCall->getBeginLoc(), diag::err_builtin_target_unsupported) |
1388 | << TheCall->getSourceRange(); |
1389 | return true; |
1390 | } |
1391 | |
1392 | static void CheckNonNullArgument(Sema &S, const Expr *ArgExpr, |
1393 | SourceLocation CallSiteLoc); |
1394 | |
1395 | bool Sema::CheckTSBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
1396 | CallExpr *TheCall) { |
1397 | switch (TI.getTriple().getArch()) { |
1398 | default: |
1399 | |
1400 | |
1401 | return false; |
1402 | case llvm::Triple::arm: |
1403 | case llvm::Triple::armeb: |
1404 | case llvm::Triple::thumb: |
1405 | case llvm::Triple::thumbeb: |
1406 | return CheckARMBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1407 | case llvm::Triple::aarch64: |
1408 | case llvm::Triple::aarch64_32: |
1409 | case llvm::Triple::aarch64_be: |
1410 | return CheckAArch64BuiltinFunctionCall(TI, BuiltinID, TheCall); |
1411 | case llvm::Triple::bpfeb: |
1412 | case llvm::Triple::bpfel: |
1413 | return CheckBPFBuiltinFunctionCall(BuiltinID, TheCall); |
1414 | case llvm::Triple::hexagon: |
1415 | return CheckHexagonBuiltinFunctionCall(BuiltinID, TheCall); |
1416 | case llvm::Triple::mips: |
1417 | case llvm::Triple::mipsel: |
1418 | case llvm::Triple::mips64: |
1419 | case llvm::Triple::mips64el: |
1420 | return CheckMipsBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1421 | case llvm::Triple::systemz: |
1422 | return CheckSystemZBuiltinFunctionCall(BuiltinID, TheCall); |
1423 | case llvm::Triple::x86: |
1424 | case llvm::Triple::x86_64: |
1425 | return CheckX86BuiltinFunctionCall(TI, BuiltinID, TheCall); |
1426 | case llvm::Triple::ppc: |
1427 | case llvm::Triple::ppcle: |
1428 | case llvm::Triple::ppc64: |
1429 | case llvm::Triple::ppc64le: |
1430 | return CheckPPCBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1431 | case llvm::Triple::amdgcn: |
1432 | return CheckAMDGCNBuiltinFunctionCall(BuiltinID, TheCall); |
1433 | case llvm::Triple::riscv32: |
1434 | case llvm::Triple::riscv64: |
1435 | return CheckRISCVBuiltinFunctionCall(TI, BuiltinID, TheCall); |
1436 | } |
1437 | } |
1438 | |
1439 | ExprResult |
1440 | Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID, |
1441 | CallExpr *TheCall) { |
1442 | ExprResult TheCallResult(TheCall); |
1443 | |
1444 | |
1445 | unsigned ICEArguments = 0; |
1446 | ASTContext::GetBuiltinTypeError Error; |
1447 | Context.GetBuiltinType(BuiltinID, Error, &ICEArguments); |
1448 | if (Error != ASTContext::GE_None) |
1449 | ICEArguments = 0; |
1450 | |
1451 | |
1452 | for (unsigned ArgNo = 0; ICEArguments != 0; ++ArgNo) { |
1453 | |
1454 | if ((ICEArguments & (1 << ArgNo)) == 0) continue; |
1455 | |
1456 | llvm::APSInt Result; |
1457 | if (SemaBuiltinConstantArg(TheCall, ArgNo, Result)) |
1458 | return true; |
1459 | ICEArguments &= ~(1 << ArgNo); |
1460 | } |
1461 | |
1462 | switch (BuiltinID) { |
1463 | case Builtin::BI__builtin___CFStringMakeConstantString: |
1464 | assert(TheCall->getNumArgs() == 1 && |
1465 | "Wrong # arguments to builtin CFStringMakeConstantString"); |
1466 | if (CheckObjCString(TheCall->getArg(0))) |
1467 | return ExprError(); |
1468 | break; |
1469 | case Builtin::BI__builtin_ms_va_start: |
1470 | case Builtin::BI__builtin_stdarg_start: |
1471 | case Builtin::BI__builtin_va_start: |
1472 | if (SemaBuiltinVAStart(BuiltinID, TheCall)) |
1473 | return ExprError(); |
1474 | break; |
1475 | case Builtin::BI__va_start: { |
1476 | switch (Context.getTargetInfo().getTriple().getArch()) { |
1477 | case llvm::Triple::aarch64: |
1478 | case llvm::Triple::arm: |
1479 | case llvm::Triple::thumb: |
1480 | if (SemaBuiltinVAStartARMMicrosoft(TheCall)) |
1481 | return ExprError(); |
1482 | break; |
1483 | default: |
1484 | if (SemaBuiltinVAStart(BuiltinID, TheCall)) |
1485 | return ExprError(); |
1486 | break; |
1487 | } |
1488 | break; |
1489 | } |
1490 | |
1491 | |
1492 | case Builtin::BI_interlockedbittestandset_acq: |
1493 | case Builtin::BI_interlockedbittestandset_rel: |
1494 | case Builtin::BI_interlockedbittestandset_nf: |
1495 | case Builtin::BI_interlockedbittestandreset_acq: |
1496 | case Builtin::BI_interlockedbittestandreset_rel: |
1497 | case Builtin::BI_interlockedbittestandreset_nf: |
1498 | if (CheckBuiltinTargetSupport( |
1499 | *this, BuiltinID, TheCall, |
1500 | {llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) |
1501 | return ExprError(); |
1502 | break; |
1503 | |
1504 | |
1505 | case Builtin::BI_bittest64: |
1506 | case Builtin::BI_bittestandcomplement64: |
1507 | case Builtin::BI_bittestandreset64: |
1508 | case Builtin::BI_bittestandset64: |
1509 | case Builtin::BI_interlockedbittestandreset64: |
1510 | case Builtin::BI_interlockedbittestandset64: |
1511 | if (CheckBuiltinTargetSupport(*this, BuiltinID, TheCall, |
1512 | {llvm::Triple::x86_64, llvm::Triple::arm, |
1513 | llvm::Triple::thumb, llvm::Triple::aarch64})) |
1514 | return ExprError(); |
1515 | break; |
1516 | |
1517 | case Builtin::BI__builtin_isgreater: |
1518 | case Builtin::BI__builtin_isgreaterequal: |
1519 | case Builtin::BI__builtin_isless: |
1520 | case Builtin::BI__builtin_islessequal: |
1521 | case Builtin::BI__builtin_islessgreater: |
1522 | case Builtin::BI__builtin_isunordered: |
1523 | if (SemaBuiltinUnorderedCompare(TheCall)) |
1524 | return ExprError(); |
1525 | break; |
1526 | case Builtin::BI__builtin_fpclassify: |
1527 | if (SemaBuiltinFPClassification(TheCall, 6)) |
1528 | return ExprError(); |
1529 | break; |
1530 | case Builtin::BI__builtin_isfinite: |
1531 | case Builtin::BI__builtin_isinf: |
1532 | case Builtin::BI__builtin_isinf_sign: |
1533 | case Builtin::BI__builtin_isnan: |
1534 | case Builtin::BI__builtin_isnormal: |
1535 | case Builtin::BI__builtin_signbit: |
1536 | case Builtin::BI__builtin_signbitf: |
1537 | case Builtin::BI__builtin_signbitl: |
1538 | if (SemaBuiltinFPClassification(TheCall, 1)) |
1539 | return ExprError(); |
1540 | break; |
1541 | case Builtin::BI__builtin_shufflevector: |
1542 | return SemaBuiltinShuffleVector(TheCall); |
1543 | |
1544 | |
1545 | case Builtin::BI__builtin_prefetch: |
1546 | if (SemaBuiltinPrefetch(TheCall)) |
1547 | return ExprError(); |
1548 | break; |
1549 | case Builtin::BI__builtin_alloca_with_align: |
1550 | if (SemaBuiltinAllocaWithAlign(TheCall)) |
1551 | return ExprError(); |
1552 | LLVM_FALLTHROUGH; |
1553 | case Builtin::BI__builtin_alloca: |
1554 | Diag(TheCall->getBeginLoc(), diag::warn_alloca) |
1555 | << TheCall->getDirectCallee(); |
1556 | break; |
1557 | case Builtin::BI__arithmetic_fence: |
1558 | if (SemaBuiltinArithmeticFence(TheCall)) |
1559 | return ExprError(); |
1560 | break; |
1561 | case Builtin::BI__assume: |
1562 | case Builtin::BI__builtin_assume: |
1563 | if (SemaBuiltinAssume(TheCall)) |
1564 | return ExprError(); |
1565 | break; |
1566 | case Builtin::BI__builtin_assume_aligned: |
1567 | if (SemaBuiltinAssumeAligned(TheCall)) |
1568 | return ExprError(); |
1569 | break; |
1570 | case Builtin::BI__builtin_dynamic_object_size: |
1571 | case Builtin::BI__builtin_object_size: |
1572 | if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3)) |
1573 | return ExprError(); |
1574 | break; |
1575 | case Builtin::BI__builtin_longjmp: |
1576 | if (SemaBuiltinLongjmp(TheCall)) |
1577 | return ExprError(); |
1578 | break; |
1579 | case Builtin::BI__builtin_setjmp: |
1580 | if (SemaBuiltinSetjmp(TheCall)) |
1581 | return ExprError(); |
1582 | break; |
1583 | case Builtin::BI__builtin_classify_type: |
1584 | if (checkArgCount(*this, TheCall, 1)) return true; |
1585 | TheCall->setType(Context.IntTy); |
1586 | break; |
1587 | case Builtin::BI__builtin_complex: |
1588 | if (SemaBuiltinComplex(TheCall)) |
1589 | return ExprError(); |
1590 | break; |
1591 | case Builtin::BI__builtin_constant_p: { |
1592 | if (checkArgCount(*this, TheCall, 1)) return true; |
1593 | ExprResult Arg = DefaultFunctionArrayLvalueConversion(TheCall->getArg(0)); |
1594 | if (Arg.isInvalid()) return true; |
1595 | TheCall->setArg(0, Arg.get()); |
1596 | TheCall->setType(Context.IntTy); |
1597 | break; |
1598 | } |
1599 | case Builtin::BI__builtin_launder: |
1600 | return SemaBuiltinLaunder(*this, TheCall); |
1601 | case Builtin::BI__sync_fetch_and_add: |
1602 | case Builtin::BI__sync_fetch_and_add_1: |
1603 | case Builtin::BI__sync_fetch_and_add_2: |
1604 | case Builtin::BI__sync_fetch_and_add_4: |
1605 | case Builtin::BI__sync_fetch_and_add_8: |
1606 | case Builtin::BI__sync_fetch_and_add_16: |
1607 | case Builtin::BI__sync_fetch_and_sub: |
1608 | case Builtin::BI__sync_fetch_and_sub_1: |
1609 | case Builtin::BI__sync_fetch_and_sub_2: |
1610 | case Builtin::BI__sync_fetch_and_sub_4: |
1611 | case Builtin::BI__sync_fetch_and_sub_8: |
1612 | case Builtin::BI__sync_fetch_and_sub_16: |
1613 | case Builtin::BI__sync_fetch_and_or: |
1614 | case Builtin::BI__sync_fetch_and_or_1: |
1615 | case Builtin::BI__sync_fetch_and_or_2: |
1616 | case Builtin::BI__sync_fetch_and_or_4: |
1617 | case Builtin::BI__sync_fetch_and_or_8: |
1618 | case Builtin::BI__sync_fetch_and_or_16: |
1619 | case Builtin::BI__sync_fetch_and_and: |
1620 | case Builtin::BI__sync_fetch_and_and_1: |
1621 | case Builtin::BI__sync_fetch_and_and_2: |
1622 | case Builtin::BI__sync_fetch_and_and_4: |
1623 | case Builtin::BI__sync_fetch_and_and_8: |
1624 | case Builtin::BI__sync_fetch_and_and_16: |
1625 | case Builtin::BI__sync_fetch_and_xor: |
1626 | case Builtin::BI__sync_fetch_and_xor_1: |
1627 | case Builtin::BI__sync_fetch_and_xor_2: |
1628 | case Builtin::BI__sync_fetch_and_xor_4: |
1629 | case Builtin::BI__sync_fetch_and_xor_8: |
1630 | case Builtin::BI__sync_fetch_and_xor_16: |
1631 | case Builtin::BI__sync_fetch_and_nand: |
1632 | case Builtin::BI__sync_fetch_and_nand_1: |
1633 | case Builtin::BI__sync_fetch_and_nand_2: |
1634 | case Builtin::BI__sync_fetch_and_nand_4: |
1635 | case Builtin::BI__sync_fetch_and_nand_8: |
1636 | case Builtin::BI__sync_fetch_and_nand_16: |
1637 | case Builtin::BI__sync_add_and_fetch: |
1638 | case Builtin::BI__sync_add_and_fetch_1: |
1639 | case Builtin::BI__sync_add_and_fetch_2: |
1640 | case Builtin::BI__sync_add_and_fetch_4: |
1641 | case Builtin::BI__sync_add_and_fetch_8: |
1642 | case Builtin::BI__sync_add_and_fetch_16: |
1643 | case Builtin::BI__sync_sub_and_fetch: |
1644 | case Builtin::BI__sync_sub_and_fetch_1: |
1645 | case Builtin::BI__sync_sub_and_fetch_2: |
1646 | case Builtin::BI__sync_sub_and_fetch_4: |
1647 | case Builtin::BI__sync_sub_and_fetch_8: |
1648 | case Builtin::BI__sync_sub_and_fetch_16: |
1649 | case Builtin::BI__sync_and_and_fetch: |
1650 | case Builtin::BI__sync_and_and_fetch_1: |
1651 | case Builtin::BI__sync_and_and_fetch_2: |
1652 | case Builtin::BI__sync_and_and_fetch_4: |
1653 | case Builtin::BI__sync_and_and_fetch_8: |
1654 | case Builtin::BI__sync_and_and_fetch_16: |
1655 | case Builtin::BI__sync_or_and_fetch: |
1656 | case Builtin::BI__sync_or_and_fetch_1: |
1657 | case Builtin::BI__sync_or_and_fetch_2: |
1658 | case Builtin::BI__sync_or_and_fetch_4: |
1659 | case Builtin::BI__sync_or_and_fetch_8: |
1660 | case Builtin::BI__sync_or_and_fetch_16: |
1661 | case Builtin::BI__sync_xor_and_fetch: |
1662 | case Builtin::BI__sync_xor_and_fetch_1: |
1663 | case Builtin::BI__sync_xor_and_fetch_2: |
1664 | case Builtin::BI__sync_xor_and_fetch_4: |
1665 | case Builtin::BI__sync_xor_and_fetch_8: |
1666 | case Builtin::BI__sync_xor_and_fetch_16: |
1667 | case Builtin::BI__sync_nand_and_fetch: |
1668 | case Builtin::BI__sync_nand_and_fetch_1: |
1669 | case Builtin::BI__sync_nand_and_fetch_2: |
1670 | case Builtin::BI__sync_nand_and_fetch_4: |
1671 | case Builtin::BI__sync_nand_and_fetch_8: |
1672 | case Builtin::BI__sync_nand_and_fetch_16: |
1673 | case Builtin::BI__sync_val_compare_and_swap: |
1674 | case Builtin::BI__sync_val_compare_and_swap_1: |
1675 | case Builtin::BI__sync_val_compare_and_swap_2: |
1676 | case Builtin::BI__sync_val_compare_and_swap_4: |
1677 | case Builtin::BI__sync_val_compare_and_swap_8: |
1678 | case Builtin::BI__sync_val_compare_and_swap_16: |
1679 | case Builtin::BI__sync_bool_compare_and_swap: |
1680 | case Builtin::BI__sync_bool_compare_and_swap_1: |
1681 | case Builtin::BI__sync_bool_compare_and_swap_2: |
1682 | case Builtin::BI__sync_bool_compare_and_swap_4: |
1683 | case Builtin::BI__sync_bool_compare_and_swap_8: |
1684 | case Builtin::BI__sync_bool_compare_and_swap_16: |
1685 | case Builtin::BI__sync_lock_test_and_set: |
1686 | case Builtin::BI__sync_lock_test_and_set_1: |
1687 | case Builtin::BI__sync_lock_test_and_set_2: |
1688 | case Builtin::BI__sync_lock_test_and_set_4: |
1689 | case Builtin::BI__sync_lock_test_and_set_8: |
1690 | case Builtin::BI__sync_lock_test_and_set_16: |
1691 | case Builtin::BI__sync_lock_release: |
1692 | case Builtin::BI__sync_lock_release_1: |
1693 | case Builtin::BI__sync_lock_release_2: |
1694 | case Builtin::BI__sync_lock_release_4: |
1695 | case Builtin::BI__sync_lock_release_8: |
1696 | case Builtin::BI__sync_lock_release_16: |
1697 | case Builtin::BI__sync_swap: |
1698 | case Builtin::BI__sync_swap_1: |
1699 | case Builtin::BI__sync_swap_2: |
1700 | case Builtin::BI__sync_swap_4: |
1701 | case Builtin::BI__sync_swap_8: |
1702 | case Builtin::BI__sync_swap_16: |
1703 | return SemaBuiltinAtomicOverloaded(TheCallResult); |
1704 | case Builtin::BI__sync_synchronize: |
1705 | Diag(TheCall->getBeginLoc(), diag::warn_atomic_implicit_seq_cst) |
1706 | << TheCall->getCallee()->getSourceRange(); |
1707 | break; |
1708 | case Builtin::BI__builtin_nontemporal_load: |
1709 | case Builtin::BI__builtin_nontemporal_store: |
1710 | return SemaBuiltinNontemporalOverloaded(TheCallResult); |
1711 | case Builtin::BI__builtin_memcpy_inline: { |
1712 | clang::Expr *SizeOp = TheCall->getArg(2); |
1713 | |
1714 | |
1715 | |
1716 | if (SizeOp->isValueDependent()) |
1717 | break; |
1718 | if (!SizeOp->EvaluateKnownConstInt(Context).isNullValue()) { |
1719 | CheckNonNullArgument(*this, TheCall->getArg(0), TheCall->getExprLoc()); |
1720 | CheckNonNullArgument(*this, TheCall->getArg(1), TheCall->getExprLoc()); |
1721 | } |
1722 | break; |
1723 | } |
1724 | #define BUILTIN(ID, TYPE, ATTRS) |
1725 | #define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \ |
1726 | case Builtin::BI##ID: \ |
1727 | return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID); |
1728 | #include "clang/Basic/Builtins.def" |
1729 | case Builtin::BI__annotation: |
1730 | if (SemaBuiltinMSVCAnnotation(*this, TheCall)) |
1731 | return ExprError(); |
1732 | break; |
1733 | case Builtin::BI__builtin_annotation: |
1734 | if (SemaBuiltinAnnotation(*this, TheCall)) |
1735 | return ExprError(); |
1736 | break; |
1737 | case Builtin::BI__builtin_addressof: |
1738 | if (SemaBuiltinAddressof(*this, TheCall)) |
1739 | return ExprError(); |
1740 | break; |
1741 | case Builtin::BI__builtin_is_aligned: |
1742 | case Builtin::BI__builtin_align_up: |
1743 | case Builtin::BI__builtin_align_down: |
1744 | if (SemaBuiltinAlignment(*this, TheCall, BuiltinID)) |
1745 | return ExprError(); |
1746 | break; |
1747 | case Builtin::BI__builtin_add_overflow: |
1748 | case Builtin::BI__builtin_sub_overflow: |
1749 | case Builtin::BI__builtin_mul_overflow: |
1750 | if (SemaBuiltinOverflow(*this, TheCall, BuiltinID)) |
1751 | return ExprError(); |
1752 | break; |
1753 | case Builtin::BI__builtin_operator_new: |
1754 | case Builtin::BI__builtin_operator_delete: { |
1755 | bool IsDelete = BuiltinID == Builtin::BI__builtin_operator_delete; |
1756 | ExprResult Res = |
1757 | SemaBuiltinOperatorNewDeleteOverloaded(TheCallResult, IsDelete); |
1758 | if (Res.isInvalid()) |
1759 | CorrectDelayedTyposInExpr(TheCallResult.get()); |
1760 | return Res; |
1761 | } |
1762 | case Builtin::BI__builtin_dump_struct: { |
1763 | |
1764 | if (checkArgCount(*this, TheCall, 2)) |
1765 | return ExprError(); |
1766 | |
1767 | const Expr *PtrArg = TheCall->getArg(0)->IgnoreParenImpCasts(); |
1768 | const QualType PtrArgType = PtrArg->getType(); |
1769 | if (!PtrArgType->isPointerType() || |
1770 | !PtrArgType->getPointeeType()->isRecordType()) { |
1771 | Diag(PtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1772 | << PtrArgType << "structure pointer" << 1 << 0 << 3 << 1 << PtrArgType |
1773 | << "structure pointer"; |
1774 | return ExprError(); |
1775 | } |
1776 | |
1777 | |
1778 | const Expr *FnPtrArg = TheCall->getArg(1)->IgnoreImpCasts(); |
1779 | const QualType FnPtrArgType = FnPtrArg->getType(); |
1780 | if (!FnPtrArgType->isPointerType()) { |
1781 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1782 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 |
1783 | << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1784 | return ExprError(); |
1785 | } |
1786 | |
1787 | const auto *FuncType = |
1788 | FnPtrArgType->getPointeeType()->getAs<FunctionType>(); |
1789 | |
1790 | if (!FuncType) { |
1791 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1792 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 |
1793 | << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1794 | return ExprError(); |
1795 | } |
1796 | |
1797 | if (const auto *FT = dyn_cast<FunctionProtoType>(FuncType)) { |
1798 | if (!FT->getNumParams()) { |
1799 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1800 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 |
1801 | << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1802 | return ExprError(); |
1803 | } |
1804 | QualType PT = FT->getParamType(0); |
1805 | if (!FT->isVariadic() || FT->getReturnType() != Context.IntTy || |
1806 | !PT->isPointerType() || !PT->getPointeeType()->isCharType() || |
1807 | !PT->getPointeeType().isConstQualified()) { |
1808 | Diag(FnPtrArg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
1809 | << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 |
1810 | << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; |
1811 | return ExprError(); |
1812 | } |
1813 | } |
1814 | |
1815 | TheCall->setType(Context.IntTy); |
1816 | break; |
1817 | } |
1818 | case Builtin::BI__builtin_expect_with_probability: { |
1819 | |
1820 | if (checkArgCount(*this, TheCall, 3)) |
1821 | return ExprError(); |
1822 | |
1823 | const Expr *ProbArg = TheCall->getArg(2); |
1824 | SmallVector<PartialDiagnosticAt, 8> Notes; |
1825 | Expr::EvalResult Eval; |
1826 | Eval.Diag = &Notes; |
1827 | if ((!ProbArg->EvaluateAsConstantExpr(Eval, Context)) || |
1828 | !Eval.Val.isFloat()) { |
1829 | Diag(ProbArg->getBeginLoc(), diag::err_probability_not_constant_float) |
1830 | << ProbArg->getSourceRange(); |
1831 | for (const PartialDiagnosticAt &PDiag : Notes) |
1832 | Diag(PDiag.first, PDiag.second); |
1833 | return ExprError(); |
1834 | } |
1835 | llvm::APFloat Probability = Eval.Val.getFloat(); |
1836 | bool LoseInfo = false; |
1837 | Probability.convert(llvm::APFloat::IEEEdouble(), |
1838 | llvm::RoundingMode::Dynamic, &LoseInfo); |
1839 | if (!(Probability >= llvm::APFloat(0.0) && |
1840 | Probability <= llvm::APFloat(1.0))) { |
1841 | Diag(ProbArg->getBeginLoc(), diag::err_probability_out_of_range) |
1842 | << ProbArg->getSourceRange(); |
1843 | return ExprError(); |
1844 | } |
1845 | break; |
1846 | } |
1847 | case Builtin::BI__builtin_preserve_access_index: |
1848 | if (SemaBuiltinPreserveAI(*this, TheCall)) |
1849 | return ExprError(); |
1850 | break; |
1851 | case Builtin::BI__builtin_call_with_static_chain: |
1852 | if (SemaBuiltinCallWithStaticChain(*this, TheCall)) |
1853 | return ExprError(); |
1854 | break; |
1855 | case Builtin::BI__exception_code: |
1856 | case Builtin::BI_exception_code: |
1857 | if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHExceptScope, |
1858 | diag::err_seh___except_block)) |
1859 | return ExprError(); |
1860 | break; |
1861 | case Builtin::BI__exception_info: |
1862 | case Builtin::BI_exception_info: |
1863 | if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHFilterScope, |
1864 | diag::err_seh___except_filter)) |
1865 | return ExprError(); |
1866 | break; |
1867 | case Builtin::BI__GetExceptionInfo: |
1868 | if (checkArgCount(*this, TheCall, 1)) |
1869 | return ExprError(); |
1870 | |
1871 | if (CheckCXXThrowOperand( |
1872 | TheCall->getBeginLoc(), |
1873 | Context.getExceptionObjectType(FDecl->getParamDecl(0)->getType()), |
1874 | TheCall)) |
1875 | return ExprError(); |
1876 | |
1877 | TheCall->setType(Context.VoidPtrTy); |
1878 | break; |
1879 | |
1880 | case Builtin::BIread_pipe: |
1881 | case Builtin::BIwrite_pipe: |
1882 | |
1883 | |
1884 | if (SemaBuiltinRWPipe(*this, TheCall)) |
1885 | return ExprError(); |
1886 | break; |
1887 | case Builtin::BIreserve_read_pipe: |
1888 | case Builtin::BIreserve_write_pipe: |
1889 | case Builtin::BIwork_group_reserve_read_pipe: |
1890 | case Builtin::BIwork_group_reserve_write_pipe: |
1891 | if (SemaBuiltinReserveRWPipe(*this, TheCall)) |
1892 | return ExprError(); |
1893 | break; |
1894 | case Builtin::BIsub_group_reserve_read_pipe: |
1895 | case Builtin::BIsub_group_reserve_write_pipe: |
1896 | if (checkOpenCLSubgroupExt(*this, TheCall) || |
1897 | SemaBuiltinReserveRWPipe(*this, TheCall)) |
1898 | return ExprError(); |
1899 | break; |
1900 | case Builtin::BIcommit_read_pipe: |
1901 | case Builtin::BIcommit_write_pipe: |
1902 | case Builtin::BIwork_group_commit_read_pipe: |
1903 | case Builtin::BIwork_group_commit_write_pipe: |
1904 | if (SemaBuiltinCommitRWPipe(*this, TheCall)) |
1905 | return ExprError(); |
1906 | break; |
1907 | case Builtin::BIsub_group_commit_read_pipe: |
1908 | case Builtin::BIsub_group_commit_write_pipe: |
1909 | if (checkOpenCLSubgroupExt(*this, TheCall) || |
1910 | SemaBuiltinCommitRWPipe(*this, TheCall)) |
1911 | return ExprError(); |
1912 | break; |
1913 | case Builtin::BIget_pipe_num_packets: |
1914 | case Builtin::BIget_pipe_max_packets: |
1915 | if (SemaBuiltinPipePackets(*this, TheCall)) |
1916 | return ExprError(); |
1917 | break; |
1918 | case Builtin::BIto_global: |
1919 | case Builtin::BIto_local: |
1920 | case Builtin::BIto_private: |
1921 | if (SemaOpenCLBuiltinToAddr(*this, BuiltinID, TheCall)) |
1922 | return ExprError(); |
1923 | break; |
1924 | |
1925 | case Builtin::BIenqueue_kernel: |
1926 | if (SemaOpenCLBuiltinEnqueueKernel(*this, TheCall)) |
1927 | return ExprError(); |
1928 | break; |
1929 | case Builtin::BIget_kernel_work_group_size: |
1930 | case Builtin::BIget_kernel_preferred_work_group_size_multiple: |
1931 | if (SemaOpenCLBuiltinKernelWorkGroupSize(*this, TheCall)) |
1932 | return ExprError(); |
1933 | break; |
1934 | case Builtin::BIget_kernel_max_sub_group_size_for_ndrange: |
1935 | case Builtin::BIget_kernel_sub_group_count_for_ndrange: |
1936 | if (SemaOpenCLBuiltinNDRangeAndBlock(*this, TheCall)) |
1937 | return ExprError(); |
1938 | break; |
1939 | case Builtin::BI__builtin_os_log_format: |
1940 | Cleanup.setExprNeedsCleanups(true); |
1941 | LLVM_FALLTHROUGH; |
1942 | case Builtin::BI__builtin_os_log_format_buffer_size: |
1943 | if (SemaBuiltinOSLogFormat(TheCall)) |
1944 | return ExprError(); |
1945 | break; |
1946 | case Builtin::BI__builtin_frame_address: |
1947 | case Builtin::BI__builtin_return_address: { |
1948 | if (SemaBuiltinConstantArgRange(TheCall, 0, 0, 0xFFFF)) |
1949 | return ExprError(); |
1950 | |
1951 | |
1952 | |
1953 | Expr::EvalResult Result; |
1954 | if (!TheCall->getArg(0)->isValueDependent() && |
1955 | TheCall->getArg(0)->EvaluateAsInt(Result, getASTContext()) && |
1956 | Result.Val.getInt() != 0) |
1957 | Diag(TheCall->getBeginLoc(), diag::warn_frame_address) |
1958 | << ((BuiltinID == Builtin::BI__builtin_return_address) |
1959 | ? "__builtin_return_address" |
1960 | : "__builtin_frame_address") |
1961 | << TheCall->getSourceRange(); |
1962 | break; |
1963 | } |
1964 | |
1965 | case Builtin::BI__builtin_matrix_transpose: |
1966 | return SemaBuiltinMatrixTranspose(TheCall, TheCallResult); |
1967 | |
1968 | case Builtin::BI__builtin_matrix_column_major_load: |
1969 | return SemaBuiltinMatrixColumnMajorLoad(TheCall, TheCallResult); |
1970 | |
1971 | case Builtin::BI__builtin_matrix_column_major_store: |
1972 | return SemaBuiltinMatrixColumnMajorStore(TheCall, TheCallResult); |
1973 | |
1974 | case Builtin::BI__builtin_get_device_side_mangled_name: { |
1975 | auto Check = [](CallExpr *TheCall) { |
1976 | if (TheCall->getNumArgs() != 1) |
1977 | return false; |
1978 | auto *DRE = dyn_cast<DeclRefExpr>(TheCall->getArg(0)->IgnoreImpCasts()); |
1979 | if (!DRE) |
1980 | return false; |
1981 | auto *D = DRE->getDecl(); |
1982 | if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) |
1983 | return false; |
1984 | return D->hasAttr<CUDAGlobalAttr>() || D->hasAttr<CUDADeviceAttr>() || |
1985 | D->hasAttr<CUDAConstantAttr>() || D->hasAttr<HIPManagedAttr>(); |
1986 | }; |
1987 | if (!Check(TheCall)) { |
1988 | Diag(TheCall->getBeginLoc(), |
1989 | diag::err_hip_invalid_args_builtin_mangled_name); |
1990 | return ExprError(); |
1991 | } |
1992 | } |
1993 | } |
1994 | |
1995 | |
1996 | |
1997 | if (Context.BuiltinInfo.isTSBuiltin(BuiltinID)) { |
1998 | if (Context.BuiltinInfo.isAuxBuiltinID(BuiltinID)) { |
1999 | assert(Context.getAuxTargetInfo() && |
2000 | "Aux Target Builtin, but not an aux target?"); |
2001 | |
2002 | if (CheckTSBuiltinFunctionCall( |
2003 | *Context.getAuxTargetInfo(), |
2004 | Context.BuiltinInfo.getAuxBuiltinID(BuiltinID), TheCall)) |
2005 | return ExprError(); |
2006 | } else { |
2007 | if (CheckTSBuiltinFunctionCall(Context.getTargetInfo(), BuiltinID, |
2008 | TheCall)) |
2009 | return ExprError(); |
2010 | } |
2011 | } |
2012 | |
2013 | return TheCallResult; |
2014 | } |
2015 | |
2016 | |
2017 | static unsigned RFT(unsigned t, bool shift = false, bool ForceQuad = false) { |
2018 | NeonTypeFlags Type(t); |
2019 | int IsQuad = ForceQuad ? true : Type.isQuad(); |
2020 | switch (Type.getEltType()) { |
2021 | case NeonTypeFlags::Int8: |
2022 | case NeonTypeFlags::Poly8: |
2023 | return shift ? 7 : (8 << IsQuad) - 1; |
2024 | case NeonTypeFlags::Int16: |
2025 | case NeonTypeFlags::Poly16: |
2026 | return shift ? 15 : (4 << IsQuad) - 1; |
2027 | case NeonTypeFlags::Int32: |
2028 | return shift ? 31 : (2 << IsQuad) - 1; |
2029 | case NeonTypeFlags::Int64: |
2030 | case NeonTypeFlags::Poly64: |
2031 | return shift ? 63 : (1 << IsQuad) - 1; |
2032 | case NeonTypeFlags::Poly128: |
2033 | return shift ? 127 : (1 << IsQuad) - 1; |
2034 | case NeonTypeFlags::Float16: |
2035 | assert(!shift && "cannot shift float types!"); |
2036 | return (4 << IsQuad) - 1; |
2037 | case NeonTypeFlags::Float32: |
2038 | assert(!shift && "cannot shift float types!"); |
2039 | return (2 << IsQuad) - 1; |
2040 | case NeonTypeFlags::Float64: |
2041 | assert(!shift && "cannot shift float types!"); |
2042 | return (1 << IsQuad) - 1; |
2043 | case NeonTypeFlags::BFloat16: |
2044 | assert(!shift && "cannot shift float types!"); |
2045 | return (4 << IsQuad) - 1; |
2046 | } |
2047 | llvm_unreachable("Invalid NeonTypeFlag!"); |
2048 | } |
2049 | |
2050 | |
2051 | |
2052 | |
2053 | static QualType getNeonEltType(NeonTypeFlags Flags, ASTContext &Context, |
2054 | bool IsPolyUnsigned, bool IsInt64Long) { |
2055 | switch (Flags.getEltType()) { |
2056 | case NeonTypeFlags::Int8: |
2057 | return Flags.isUnsigned() ? Context.UnsignedCharTy : Context.SignedCharTy; |
2058 | case NeonTypeFlags::Int16: |
2059 | return Flags.isUnsigned() ? Context.UnsignedShortTy : Context.ShortTy; |
2060 | case NeonTypeFlags::Int32: |
2061 | return Flags.isUnsigned() ? Context.UnsignedIntTy : Context.IntTy; |
2062 | case NeonTypeFlags::Int64: |
2063 | if (IsInt64Long) |
2064 | return Flags.isUnsigned() ? Context.UnsignedLongTy : Context.LongTy; |
2065 | else |
2066 | return Flags.isUnsigned() ? Context.UnsignedLongLongTy |
2067 | : Context.LongLongTy; |
2068 | case NeonTypeFlags::Poly8: |
2069 | return IsPolyUnsigned ? Context.UnsignedCharTy : Context.SignedCharTy; |
2070 | case NeonTypeFlags::Poly16: |
2071 | return IsPolyUnsigned ? Context.UnsignedShortTy : Context.ShortTy; |
2072 | case NeonTypeFlags::Poly64: |
2073 | if (IsInt64Long) |
2074 | return Context.UnsignedLongTy; |
2075 | else |
2076 | return Context.UnsignedLongLongTy; |
2077 | case NeonTypeFlags::Poly128: |
2078 | break; |
2079 | case NeonTypeFlags::Float16: |
2080 | return Context.HalfTy; |
2081 | case NeonTypeFlags::Float32: |
2082 | return Context.FloatTy; |
2083 | case NeonTypeFlags::Float64: |
2084 | return Context.DoubleTy; |
2085 | case NeonTypeFlags::BFloat16: |
2086 | return Context.BFloat16Ty; |
2087 | } |
2088 | llvm_unreachable("Invalid NeonTypeFlag!"); |
2089 | } |
2090 | |
2091 | bool Sema::CheckSVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { |
2092 | |
2093 | SmallVector<std::tuple<int,int,int>, 3> ImmChecks; |
2094 | |
2095 | switch (BuiltinID) { |
2096 | default: |
2097 | return false; |
2098 | #define GET_SVE_IMMEDIATE_CHECK |
2099 | #include "clang/Basic/arm_sve_sema_rangechecks.inc" |
2100 | #undef GET_SVE_IMMEDIATE_CHECK |
2101 | } |
2102 | |
2103 | |
2104 | bool HasError = false; |
2105 | for (auto &I : ImmChecks) { |
2106 | int ArgNum, CheckTy, ElementSizeInBits; |
2107 | std::tie(ArgNum, CheckTy, ElementSizeInBits) = I; |
2108 | |
2109 | typedef bool(*OptionSetCheckFnTy)(int64_t Value); |
2110 | |
2111 | |
2112 | |
2113 | auto CheckImmediateInSet = [&](OptionSetCheckFnTy CheckImm, |
2114 | int ErrDiag) -> bool { |
2115 | |
2116 | Expr *Arg = TheCall->getArg(ArgNum); |
2117 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
2118 | return false; |
2119 | |
2120 | |
2121 | llvm::APSInt Imm; |
2122 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Imm)) |
2123 | return true; |
2124 | |
2125 | if (!CheckImm(Imm.getSExtValue())) |
2126 | return Diag(TheCall->getBeginLoc(), ErrDiag) << Arg->getSourceRange(); |
2127 | return false; |
2128 | }; |
2129 | |
2130 | switch ((SVETypeFlags::ImmCheckType)CheckTy) { |
2131 | case SVETypeFlags::ImmCheck0_31: |
2132 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 31)) |
2133 | HasError = true; |
2134 | break; |
2135 | case SVETypeFlags::ImmCheck0_13: |
2136 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 13)) |
2137 | HasError = true; |
2138 | break; |
2139 | case SVETypeFlags::ImmCheck1_16: |
2140 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 1, 16)) |
2141 | HasError = true; |
2142 | break; |
2143 | case SVETypeFlags::ImmCheck0_7: |
2144 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 7)) |
2145 | HasError = true; |
2146 | break; |
2147 | case SVETypeFlags::ImmCheckExtract: |
2148 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2149 | (2048 / ElementSizeInBits) - 1)) |
2150 | HasError = true; |
2151 | break; |
2152 | case SVETypeFlags::ImmCheckShiftRight: |
2153 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 1, ElementSizeInBits)) |
2154 | HasError = true; |
2155 | break; |
2156 | case SVETypeFlags::ImmCheckShiftRightNarrow: |
2157 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 1, |
2158 | ElementSizeInBits / 2)) |
2159 | HasError = true; |
2160 | break; |
2161 | case SVETypeFlags::ImmCheckShiftLeft: |
2162 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2163 | ElementSizeInBits - 1)) |
2164 | HasError = true; |
2165 | break; |
2166 | case SVETypeFlags::ImmCheckLaneIndex: |
2167 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2168 | (128 / (1 * ElementSizeInBits)) - 1)) |
2169 | HasError = true; |
2170 | break; |
2171 | case SVETypeFlags::ImmCheckLaneIndexCompRotate: |
2172 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2173 | (128 / (2 * ElementSizeInBits)) - 1)) |
2174 | HasError = true; |
2175 | break; |
2176 | case SVETypeFlags::ImmCheckLaneIndexDot: |
2177 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, |
2178 | (128 / (4 * ElementSizeInBits)) - 1)) |
2179 | HasError = true; |
2180 | break; |
2181 | case SVETypeFlags::ImmCheckComplexRot90_270: |
2182 | if (CheckImmediateInSet([](int64_t V) { return V == 90 || V == 270; }, |
2183 | diag::err_rotation_argument_to_cadd)) |
2184 | HasError = true; |
2185 | break; |
2186 | case SVETypeFlags::ImmCheckComplexRotAll90: |
2187 | if (CheckImmediateInSet( |
2188 | [](int64_t V) { |
2189 | return V == 0 || V == 90 || V == 180 || V == 270; |
2190 | }, |
2191 | diag::err_rotation_argument_to_cmla)) |
2192 | HasError = true; |
2193 | break; |
2194 | case SVETypeFlags::ImmCheck0_1: |
2195 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 1)) |
2196 | HasError = true; |
2197 | break; |
2198 | case SVETypeFlags::ImmCheck0_2: |
2199 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 2)) |
2200 | HasError = true; |
2201 | break; |
2202 | case SVETypeFlags::ImmCheck0_3: |
2203 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, 3)) |
2204 | HasError = true; |
2205 | break; |
2206 | } |
2207 | } |
2208 | |
2209 | return HasError; |
2210 | } |
2211 | |
2212 | bool Sema::CheckNeonBuiltinFunctionCall(const TargetInfo &TI, |
2213 | unsigned BuiltinID, CallExpr *TheCall) { |
2214 | llvm::APSInt Result; |
2215 | uint64_t mask = 0; |
2216 | unsigned TV = 0; |
2217 | int PtrArgNum = -1; |
2218 | bool HasConstPtr = false; |
2219 | switch (BuiltinID) { |
2220 | #define GET_NEON_OVERLOAD_CHECK |
2221 | #include "clang/Basic/arm_neon.inc" |
2222 | #include "clang/Basic/arm_fp16.inc" |
2223 | #undef GET_NEON_OVERLOAD_CHECK |
2224 | } |
2225 | |
2226 | |
2227 | |
2228 | unsigned ImmArg = TheCall->getNumArgs()-1; |
2229 | if (mask) { |
2230 | if (SemaBuiltinConstantArg(TheCall, ImmArg, Result)) |
2231 | return true; |
2232 | |
2233 | TV = Result.getLimitedValue(64); |
2234 | if ((TV > 63) || (mask & (1ULL << TV)) == 0) |
2235 | return Diag(TheCall->getBeginLoc(), diag::err_invalid_neon_type_code) |
2236 | << TheCall->getArg(ImmArg)->getSourceRange(); |
2237 | } |
2238 | |
2239 | if (PtrArgNum >= 0) { |
2240 | |
2241 | Expr *Arg = TheCall->getArg(PtrArgNum); |
2242 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Arg)) |
2243 | Arg = ICE->getSubExpr(); |
2244 | ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg); |
2245 | QualType RHSTy = RHS.get()->getType(); |
2246 | |
2247 | llvm::Triple::ArchType Arch = TI.getTriple().getArch(); |
2248 | bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 || |
2249 | Arch == llvm::Triple::aarch64_32 || |
2250 | Arch == llvm::Triple::aarch64_be; |
2251 | bool IsInt64Long = TI.getInt64Type() == TargetInfo::SignedLong; |
2252 | QualType EltTy = |
2253 | getNeonEltType(NeonTypeFlags(TV), Context, IsPolyUnsigned, IsInt64Long); |
2254 | if (HasConstPtr) |
2255 | EltTy = EltTy.withConst(); |
2256 | QualType LHSTy = Context.getPointerType(EltTy); |
2257 | AssignConvertType ConvTy; |
2258 | ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); |
2259 | if (RHS.isInvalid()) |
2260 | return true; |
2261 | if (DiagnoseAssignmentResult(ConvTy, Arg->getBeginLoc(), LHSTy, RHSTy, |
2262 | RHS.get(), AA_Assigning)) |
2263 | return true; |
2264 | } |
2265 | |
2266 | |
2267 | |
2268 | unsigned i = 0, l = 0, u = 0; |
2269 | switch (BuiltinID) { |
2270 | default: |
2271 | return false; |
2272 | #define GET_NEON_IMMEDIATE_CHECK |
2273 | #include "clang/Basic/arm_neon.inc" |
2274 | #include "clang/Basic/arm_fp16.inc" |
2275 | #undef GET_NEON_IMMEDIATE_CHECK |
2276 | } |
2277 | |
2278 | return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); |
2279 | } |
2280 | |
2281 | bool Sema::CheckMVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { |
2282 | switch (BuiltinID) { |
2283 | default: |
2284 | return false; |
2285 | #include "clang/Basic/arm_mve_builtin_sema.inc" |
2286 | } |
2287 | } |
2288 | |
2289 | bool Sema::CheckCDEBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
2290 | CallExpr *TheCall) { |
2291 | bool Err = false; |
2292 | switch (BuiltinID) { |
2293 | default: |
2294 | return false; |
2295 | #include "clang/Basic/arm_cde_builtin_sema.inc" |
2296 | } |
2297 | |
2298 | if (Err) |
2299 | return true; |
2300 | |
2301 | return CheckARMCoprocessorImmediate(TI, TheCall->getArg(0), true); |
2302 | } |
2303 | |
2304 | bool Sema::CheckARMCoprocessorImmediate(const TargetInfo &TI, |
2305 | const Expr *CoprocArg, bool WantCDE) { |
2306 | if (isConstantEvaluated()) |
2307 | return false; |
2308 | |
2309 | |
2310 | if (CoprocArg->isTypeDependent() || CoprocArg->isValueDependent()) |
2311 | return false; |
2312 | |
2313 | llvm::APSInt CoprocNoAP = *CoprocArg->getIntegerConstantExpr(Context); |
2314 | int64_t CoprocNo = CoprocNoAP.getExtValue(); |
2315 | assert(CoprocNo >= 0 && "Coprocessor immediate must be non-negative"); |
2316 | |
2317 | uint32_t CDECoprocMask = TI.getARMCDECoprocMask(); |
2318 | bool IsCDECoproc = CoprocNo <= 7 && (CDECoprocMask & (1 << CoprocNo)); |
2319 | |
2320 | if (IsCDECoproc != WantCDE) |
2321 | return Diag(CoprocArg->getBeginLoc(), diag::err_arm_invalid_coproc) |
2322 | << (int)CoprocNo << (int)WantCDE << CoprocArg->getSourceRange(); |
2323 | |
2324 | return false; |
2325 | } |
2326 | |
2327 | bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, |
2328 | unsigned MaxWidth) { |
2329 | assert((BuiltinID == ARM::BI__builtin_arm_ldrex || |
2330 | BuiltinID == ARM::BI__builtin_arm_ldaex || |
2331 | BuiltinID == ARM::BI__builtin_arm_strex || |
2332 | BuiltinID == ARM::BI__builtin_arm_stlex || |
2333 | BuiltinID == AArch64::BI__builtin_arm_ldrex || |
2334 | BuiltinID == AArch64::BI__builtin_arm_ldaex || |
2335 | BuiltinID == AArch64::BI__builtin_arm_strex || |
2336 | BuiltinID == AArch64::BI__builtin_arm_stlex) && |
2337 | "unexpected ARM builtin"); |
2338 | bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex || |
2339 | BuiltinID == ARM::BI__builtin_arm_ldaex || |
2340 | BuiltinID == AArch64::BI__builtin_arm_ldrex || |
2341 | BuiltinID == AArch64::BI__builtin_arm_ldaex; |
2342 | |
2343 | DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
2344 | |
2345 | |
2346 | if (checkArgCount(*this, TheCall, IsLdrex ? 1 : 2)) |
2347 | return true; |
2348 | |
2349 | |
2350 | |
2351 | |
2352 | |
2353 | Expr *PointerArg = TheCall->getArg(IsLdrex ? 0 : 1); |
2354 | ExprResult PointerArgRes = DefaultFunctionArrayLvalueConversion(PointerArg); |
2355 | if (PointerArgRes.isInvalid()) |
2356 | return true; |
2357 | PointerArg = PointerArgRes.get(); |
2358 | |
2359 | const PointerType *pointerType = PointerArg->getType()->getAs<PointerType>(); |
2360 | if (!pointerType) { |
2361 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer) |
2362 | << PointerArg->getType() << PointerArg->getSourceRange(); |
2363 | return true; |
2364 | } |
2365 | |
2366 | |
2367 | |
2368 | |
2369 | QualType ValType = pointerType->getPointeeType(); |
2370 | QualType AddrType = ValType.getUnqualifiedType().withVolatile(); |
2371 | if (IsLdrex) |
2372 | AddrType.addConst(); |
2373 | |
2374 | |
2375 | CastKind CastNeeded = CK_NoOp; |
2376 | if (!AddrType.isAtLeastAsQualifiedAs(ValType)) { |
2377 | CastNeeded = CK_BitCast; |
2378 | Diag(DRE->getBeginLoc(), diag::ext_typecheck_convert_discards_qualifiers) |
2379 | << PointerArg->getType() << Context.getPointerType(AddrType) |
2380 | << AA_Passing << PointerArg->getSourceRange(); |
2381 | } |
2382 | |
2383 | |
2384 | AddrType = Context.getPointerType(AddrType); |
2385 | PointerArgRes = ImpCastExprToType(PointerArg, AddrType, CastNeeded); |
2386 | if (PointerArgRes.isInvalid()) |
2387 | return true; |
2388 | PointerArg = PointerArgRes.get(); |
2389 | |
2390 | TheCall->setArg(IsLdrex ? 0 : 1, PointerArg); |
2391 | |
2392 | |
2393 | if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && |
2394 | !ValType->isBlockPointerType() && !ValType->isFloatingType()) { |
2395 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer_intfltptr) |
2396 | << PointerArg->getType() << PointerArg->getSourceRange(); |
2397 | return true; |
2398 | } |
2399 | |
2400 | |
2401 | if (Context.getTypeSize(ValType) > MaxWidth) { |
2402 | assert(MaxWidth == 64 && "Diagnostic unexpectedly inaccurate"); |
2403 | Diag(DRE->getBeginLoc(), diag::err_atomic_exclusive_builtin_pointer_size) |
2404 | << PointerArg->getType() << PointerArg->getSourceRange(); |
2405 | return true; |
2406 | } |
2407 | |
2408 | switch (ValType.getObjCLifetime()) { |
2409 | case Qualifiers::OCL_None: |
2410 | case Qualifiers::OCL_ExplicitNone: |
2411 | |
2412 | break; |
2413 | |
2414 | case Qualifiers::OCL_Weak: |
2415 | case Qualifiers::OCL_Strong: |
2416 | case Qualifiers::OCL_Autoreleasing: |
2417 | Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership) |
2418 | << ValType << PointerArg->getSourceRange(); |
2419 | return true; |
2420 | } |
2421 | |
2422 | if (IsLdrex) { |
2423 | TheCall->setType(ValType); |
2424 | return false; |
2425 | } |
2426 | |
2427 | |
2428 | ExprResult ValArg = TheCall->getArg(0); |
2429 | InitializedEntity Entity = InitializedEntity::InitializeParameter( |
2430 | Context, ValType, false); |
2431 | ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); |
2432 | if (ValArg.isInvalid()) |
2433 | return true; |
2434 | TheCall->setArg(0, ValArg.get()); |
2435 | |
2436 | |
2437 | |
2438 | TheCall->setType(Context.IntTy); |
2439 | return false; |
2440 | } |
2441 | |
2442 | bool Sema::CheckARMBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
2443 | CallExpr *TheCall) { |
2444 | if (BuiltinID == ARM::BI__builtin_arm_ldrex || |
2445 | BuiltinID == ARM::BI__builtin_arm_ldaex || |
2446 | BuiltinID == ARM::BI__builtin_arm_strex || |
2447 | BuiltinID == ARM::BI__builtin_arm_stlex) { |
2448 | return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64); |
2449 | } |
2450 | |
2451 | if (BuiltinID == ARM::BI__builtin_arm_prefetch) { |
2452 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || |
2453 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 1); |
2454 | } |
2455 | |
2456 | if (BuiltinID == ARM::BI__builtin_arm_rsr64 || |
2457 | BuiltinID == ARM::BI__builtin_arm_wsr64) |
2458 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 3, false); |
2459 | |
2460 | if (BuiltinID == ARM::BI__builtin_arm_rsr || |
2461 | BuiltinID == ARM::BI__builtin_arm_rsrp || |
2462 | BuiltinID == ARM::BI__builtin_arm_wsr || |
2463 | BuiltinID == ARM::BI__builtin_arm_wsrp) |
2464 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); |
2465 | |
2466 | if (CheckNeonBuiltinFunctionCall(TI, BuiltinID, TheCall)) |
2467 | return true; |
2468 | if (CheckMVEBuiltinFunctionCall(BuiltinID, TheCall)) |
2469 | return true; |
2470 | if (CheckCDEBuiltinFunctionCall(TI, BuiltinID, TheCall)) |
2471 | return true; |
2472 | |
2473 | |
2474 | |
2475 | |
2476 | switch (BuiltinID) { |
2477 | default: return false; |
2478 | case ARM::BI__builtin_arm_ssat: |
2479 | return SemaBuiltinConstantArgRange(TheCall, 1, 1, 32); |
2480 | case ARM::BI__builtin_arm_usat: |
2481 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 31); |
2482 | case ARM::BI__builtin_arm_ssat16: |
2483 | return SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); |
2484 | case ARM::BI__builtin_arm_usat16: |
2485 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
2486 | case ARM::BI__builtin_arm_vcvtr_f: |
2487 | case ARM::BI__builtin_arm_vcvtr_d: |
2488 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
2489 | case ARM::BI__builtin_arm_dmb: |
2490 | case ARM::BI__builtin_arm_dsb: |
2491 | case ARM::BI__builtin_arm_isb: |
2492 | case ARM::BI__builtin_arm_dbg: |
2493 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15); |
2494 | case ARM::BI__builtin_arm_cdp: |
2495 | case ARM::BI__builtin_arm_cdp2: |
2496 | case ARM::BI__builtin_arm_mcr: |
2497 | case ARM::BI__builtin_arm_mcr2: |
2498 | case ARM::BI__builtin_arm_mrc: |
2499 | case ARM::BI__builtin_arm_mrc2: |
2500 | case ARM::BI__builtin_arm_mcrr: |
2501 | case ARM::BI__builtin_arm_mcrr2: |
2502 | case ARM::BI__builtin_arm_mrrc: |
2503 | case ARM::BI__builtin_arm_mrrc2: |
2504 | case ARM::BI__builtin_arm_ldc: |
2505 | case ARM::BI__builtin_arm_ldcl: |
2506 | case ARM::BI__builtin_arm_ldc2: |
2507 | case ARM::BI__builtin_arm_ldc2l: |
2508 | case ARM::BI__builtin_arm_stc: |
2509 | case ARM::BI__builtin_arm_stcl: |
2510 | case ARM::BI__builtin_arm_stc2: |
2511 | case ARM::BI__builtin_arm_stc2l: |
2512 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15) || |
2513 | CheckARMCoprocessorImmediate(TI, TheCall->getArg(0), |
2514 | false); |
2515 | } |
2516 | } |
2517 | |
2518 | bool Sema::CheckAArch64BuiltinFunctionCall(const TargetInfo &TI, |
2519 | unsigned BuiltinID, |
2520 | CallExpr *TheCall) { |
2521 | if (BuiltinID == AArch64::BI__builtin_arm_ldrex || |
2522 | BuiltinID == AArch64::BI__builtin_arm_ldaex || |
2523 | BuiltinID == AArch64::BI__builtin_arm_strex || |
2524 | BuiltinID == AArch64::BI__builtin_arm_stlex) { |
2525 | return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 128); |
2526 | } |
2527 | |
2528 | if (BuiltinID == AArch64::BI__builtin_arm_prefetch) { |
2529 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || |
2530 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 2) || |
2531 | SemaBuiltinConstantArgRange(TheCall, 3, 0, 1) || |
2532 | SemaBuiltinConstantArgRange(TheCall, 4, 0, 1); |
2533 | } |
2534 | |
2535 | if (BuiltinID == AArch64::BI__builtin_arm_rsr64 || |
2536 | BuiltinID == AArch64::BI__builtin_arm_wsr64) |
2537 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); |
2538 | |
2539 | |
2540 | if (BuiltinID == AArch64::BI__builtin_arm_irg || |
2541 | BuiltinID == AArch64::BI__builtin_arm_addg || |
2542 | BuiltinID == AArch64::BI__builtin_arm_gmi || |
2543 | BuiltinID == AArch64::BI__builtin_arm_ldg || |
2544 | BuiltinID == AArch64::BI__builtin_arm_stg || |
2545 | BuiltinID == AArch64::BI__builtin_arm_subp) { |
2546 | return SemaBuiltinARMMemoryTaggingCall(BuiltinID, TheCall); |
2547 | } |
2548 | |
2549 | if (BuiltinID == AArch64::BI__builtin_arm_rsr || |
2550 | BuiltinID == AArch64::BI__builtin_arm_rsrp || |
2551 | BuiltinID == AArch64::BI__builtin_arm_wsr || |
2552 | BuiltinID == AArch64::BI__builtin_arm_wsrp) |
2553 | return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); |
2554 | |
2555 | |
2556 | |
2557 | |
2558 | if (BuiltinID == AArch64::BI_ReadStatusReg || |
2559 | BuiltinID == AArch64::BI_WriteStatusReg) |
2560 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 0x7fff); |
2561 | |
2562 | if (BuiltinID == AArch64::BI__getReg) |
2563 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31); |
2564 | |
2565 | if (CheckNeonBuiltinFunctionCall(TI, BuiltinID, TheCall)) |
2566 | return true; |
2567 | |
2568 | if (CheckSVEBuiltinFunctionCall(BuiltinID, TheCall)) |
2569 | return true; |
2570 | |
2571 | |
2572 | |
2573 | unsigned i = 0, l = 0, u = 0; |
2574 | switch (BuiltinID) { |
2575 | default: return false; |
2576 | case AArch64::BI__builtin_arm_dmb: |
2577 | case AArch64::BI__builtin_arm_dsb: |
2578 | case AArch64::BI__builtin_arm_isb: l = 0; u = 15; break; |
2579 | case AArch64::BI__builtin_arm_tcancel: l = 0; u = 65535; break; |
2580 | } |
2581 | |
2582 | return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); |
2583 | } |
2584 | |
2585 | static bool isValidBPFPreserveFieldInfoArg(Expr *Arg) { |
2586 | if (Arg->getType()->getAsPlaceholderType()) |
2587 | return false; |
2588 | |
2589 | |
2590 | |
2591 | |
2592 | |
2593 | return (Arg->IgnoreParens()->getObjectKind() == OK_BitField || |
2594 | dyn_cast<MemberExpr>(Arg->IgnoreParens()) || |
2595 | dyn_cast<ArraySubscriptExpr>(Arg->IgnoreParens())); |
2596 | } |
2597 | |
2598 | static bool isEltOfVectorTy(ASTContext &Context, CallExpr *Call, Sema &S, |
2599 | QualType VectorTy, QualType EltTy) { |
2600 | QualType VectorEltTy = VectorTy->castAs<VectorType>()->getElementType(); |
2601 | if (!Context.hasSameType(VectorEltTy, EltTy)) { |
2602 | S.Diag(Call->getBeginLoc(), diag::err_typecheck_call_different_arg_types) |
2603 | << Call->getSourceRange() << VectorEltTy << EltTy; |
2604 | return false; |
2605 | } |
2606 | return true; |
2607 | } |
2608 | |
2609 | static bool isValidBPFPreserveTypeInfoArg(Expr *Arg) { |
2610 | QualType ArgType = Arg->getType(); |
2611 | if (ArgType->getAsPlaceholderType()) |
2612 | return false; |
2613 | |
2614 | |
2615 | |
2616 | |
2617 | |
2618 | |
2619 | if (!dyn_cast<DeclRefExpr>(Arg->IgnoreParens()) && |
2620 | !dyn_cast<UnaryOperator>(Arg->IgnoreParens())) |
2621 | return false; |
2622 | |
2623 | |
2624 | if (ArgType->getAs<TypedefType>()) |
2625 | return true; |
2626 | |
2627 | |
2628 | const Type *Ty = ArgType->getUnqualifiedDesugaredType(); |
2629 | if (const auto *RT = Ty->getAs<RecordType>()) { |
2630 | if (!RT->getDecl()->getDeclName().isEmpty()) |
2631 | return true; |
2632 | } else if (const auto *ET = Ty->getAs<EnumType>()) { |
2633 | if (!ET->getDecl()->getDeclName().isEmpty()) |
2634 | return true; |
2635 | } |
2636 | |
2637 | return false; |
2638 | } |
2639 | |
2640 | static bool isValidBPFPreserveEnumValueArg(Expr *Arg) { |
2641 | QualType ArgType = Arg->getType(); |
2642 | if (ArgType->getAsPlaceholderType()) |
2643 | return false; |
2644 | |
2645 | |
2646 | |
2647 | |
2648 | |
2649 | const auto *UO = dyn_cast<UnaryOperator>(Arg->IgnoreParens()); |
2650 | if (!UO) |
2651 | return false; |
2652 | |
2653 | const auto *CE = dyn_cast<CStyleCastExpr>(UO->getSubExpr()); |
2654 | if (!CE) |
2655 | return false; |
2656 | if (CE->getCastKind() != CK_IntegralToPointer && |
2657 | CE->getCastKind() != CK_NullToPointer) |
2658 | return false; |
2659 | |
2660 | |
2661 | const auto *DR = dyn_cast<DeclRefExpr>(CE->getSubExpr()); |
2662 | if (!DR) |
2663 | return false; |
2664 | |
2665 | const EnumConstantDecl *Enumerator = |
2666 | dyn_cast<EnumConstantDecl>(DR->getDecl()); |
2667 | if (!Enumerator) |
2668 | return false; |
2669 | |
2670 | |
2671 | const Type *Ty = ArgType->getUnqualifiedDesugaredType(); |
2672 | const auto *ET = Ty->getAs<EnumType>(); |
2673 | if (!ET) |
2674 | return false; |
2675 | |
2676 | |
2677 | for (auto *EDI : ET->getDecl()->enumerators()) { |
2678 | if (EDI == Enumerator) |
2679 | return true; |
2680 | } |
2681 | |
2682 | return false; |
2683 | } |
2684 | |
2685 | bool Sema::CheckBPFBuiltinFunctionCall(unsigned BuiltinID, |
2686 | CallExpr *TheCall) { |
2687 | assert((BuiltinID == BPF::BI__builtin_preserve_field_info || |
2688 | BuiltinID == BPF::BI__builtin_btf_type_id || |
2689 | BuiltinID == BPF::BI__builtin_preserve_type_info || |
2690 | BuiltinID == BPF::BI__builtin_preserve_enum_value) && |
2691 | "unexpected BPF builtin"); |
2692 | |
2693 | if (checkArgCount(*this, TheCall, 2)) |
2694 | return true; |
2695 | |
2696 | |
2697 | Expr *Arg = TheCall->getArg(1); |
2698 | Optional<llvm::APSInt> Value = Arg->getIntegerConstantExpr(Context); |
2699 | diag::kind kind; |
2700 | if (!Value) { |
2701 | if (BuiltinID == BPF::BI__builtin_preserve_field_info) |
2702 | kind = diag::err_preserve_field_info_not_const; |
2703 | else if (BuiltinID == BPF::BI__builtin_btf_type_id) |
2704 | kind = diag::err_btf_type_id_not_const; |
2705 | else if (BuiltinID == BPF::BI__builtin_preserve_type_info) |
2706 | kind = diag::err_preserve_type_info_not_const; |
2707 | else |
2708 | kind = diag::err_preserve_enum_value_not_const; |
2709 | Diag(Arg->getBeginLoc(), kind) << 2 << Arg->getSourceRange(); |
2710 | return true; |
2711 | } |
2712 | |
2713 | |
2714 | Arg = TheCall->getArg(0); |
2715 | bool InvalidArg = false; |
2716 | bool ReturnUnsignedInt = true; |
2717 | if (BuiltinID == BPF::BI__builtin_preserve_field_info) { |
2718 | if (!isValidBPFPreserveFieldInfoArg(Arg)) { |
2719 | InvalidArg = true; |
2720 | kind = diag::err_preserve_field_info_not_field; |
2721 | } |
2722 | } else if (BuiltinID == BPF::BI__builtin_preserve_type_info) { |
2723 | if (!isValidBPFPreserveTypeInfoArg(Arg)) { |
2724 | InvalidArg = true; |
2725 | kind = diag::err_preserve_type_info_invalid; |
2726 | } |
2727 | } else if (BuiltinID == BPF::BI__builtin_preserve_enum_value) { |
2728 | if (!isValidBPFPreserveEnumValueArg(Arg)) { |
2729 | InvalidArg = true; |
2730 | kind = diag::err_preserve_enum_value_invalid; |
2731 | } |
2732 | ReturnUnsignedInt = false; |
2733 | } else if (BuiltinID == BPF::BI__builtin_btf_type_id) { |
2734 | ReturnUnsignedInt = false; |
2735 | } |
2736 | |
2737 | if (InvalidArg) { |
2738 | Diag(Arg->getBeginLoc(), kind) << 1 << Arg->getSourceRange(); |
2739 | return true; |
2740 | } |
2741 | |
2742 | if (ReturnUnsignedInt) |
2743 | TheCall->setType(Context.UnsignedIntTy); |
2744 | else |
2745 | TheCall->setType(Context.UnsignedLongTy); |
2746 | return false; |
2747 | } |
2748 | |
2749 | bool Sema::CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { |
2750 | struct ArgInfo { |
2751 | uint8_t OpNum; |
2752 | bool IsSigned; |
2753 | uint8_t BitWidth; |
2754 | uint8_t Align; |
2755 | }; |
2756 | struct BuiltinInfo { |
2757 | unsigned BuiltinID; |
2758 | ArgInfo Infos[2]; |
2759 | }; |
2760 | |
2761 | static BuiltinInfo Infos[] = { |
2762 | { Hexagon::BI__builtin_circ_ldd, {{ 3, true, 4, 3 }} }, |
2763 | { Hexagon::BI__builtin_circ_ldw, {{ 3, true, 4, 2 }} }, |
2764 | { Hexagon::BI__builtin_circ_ldh, {{ 3, true, 4, 1 }} }, |
2765 | { Hexagon::BI__builtin_circ_lduh, {{ 3, true, 4, 1 }} }, |
2766 | { Hexagon::BI__builtin_circ_ldb, {{ 3, true, 4, 0 }} }, |
2767 | { Hexagon::BI__builtin_circ_ldub, {{ 3, true, 4, 0 }} }, |
2768 | { Hexagon::BI__builtin_circ_std, {{ 3, true, 4, 3 }} }, |
2769 | { Hexagon::BI__builtin_circ_stw, {{ 3, true, 4, 2 }} }, |
2770 | { Hexagon::BI__builtin_circ_sth, {{ 3, true, 4, 1 }} }, |
2771 | { Hexagon::BI__builtin_circ_sthhi, {{ 3, true, 4, 1 }} }, |
2772 | { Hexagon::BI__builtin_circ_stb, {{ 3, true, 4, 0 }} }, |
2773 | |
2774 | { Hexagon::BI__builtin_HEXAGON_L2_loadrub_pci, {{ 1, true, 4, 0 }} }, |
2775 | { Hexagon::BI__builtin_HEXAGON_L2_loadrb_pci, {{ 1, true, 4, 0 }} }, |
2776 | { Hexagon::BI__builtin_HEXAGON_L2_loadruh_pci, {{ 1, true, 4, 1 }} }, |
2777 | { Hexagon::BI__builtin_HEXAGON_L2_loadrh_pci, {{ 1, true, 4, 1 }} }, |
2778 | { Hexagon::BI__builtin_HEXAGON_L2_loadri_pci, {{ 1, true, 4, 2 }} }, |
2779 | { Hexagon::BI__builtin_HEXAGON_L2_loadrd_pci, {{ 1, true, 4, 3 }} }, |
2780 | { Hexagon::BI__builtin_HEXAGON_S2_storerb_pci, {{ 1, true, 4, 0 }} }, |
2781 | { Hexagon::BI__builtin_HEXAGON_S2_storerh_pci, {{ 1, true, 4, 1 }} }, |
2782 | { Hexagon::BI__builtin_HEXAGON_S2_storerf_pci, {{ 1, true, 4, 1 }} }, |
2783 | { Hexagon::BI__builtin_HEXAGON_S2_storeri_pci, {{ 1, true, 4, 2 }} }, |
2784 | { Hexagon::BI__builtin_HEXAGON_S2_storerd_pci, {{ 1, true, 4, 3 }} }, |
2785 | |
2786 | { Hexagon::BI__builtin_HEXAGON_A2_combineii, {{ 1, true, 8, 0 }} }, |
2787 | { Hexagon::BI__builtin_HEXAGON_A2_tfrih, {{ 1, false, 16, 0 }} }, |
2788 | { Hexagon::BI__builtin_HEXAGON_A2_tfril, {{ 1, false, 16, 0 }} }, |
2789 | { Hexagon::BI__builtin_HEXAGON_A2_tfrpi, {{ 0, true, 8, 0 }} }, |
2790 | { Hexagon::BI__builtin_HEXAGON_A4_bitspliti, {{ 1, false, 5, 0 }} }, |
2791 | { Hexagon::BI__builtin_HEXAGON_A4_cmpbeqi, {{ 1, false, 8, 0 }} }, |
2792 | { Hexagon::BI__builtin_HEXAGON_A4_cmpbgti, {{ 1, true, 8, 0 }} }, |
2793 | { Hexagon::BI__builtin_HEXAGON_A4_cround_ri, {{ 1, false, 5, 0 }} }, |
2794 | { Hexagon::BI__builtin_HEXAGON_A4_round_ri, {{ 1, false, 5, 0 }} }, |
2795 | { Hexagon::BI__builtin_HEXAGON_A4_round_ri_sat, {{ 1, false, 5, 0 }} }, |
2796 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpbeqi, {{ 1, false, 8, 0 }} }, |
2797 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgti, {{ 1, true, 8, 0 }} }, |
2798 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgtui, {{ 1, false, 7, 0 }} }, |
2799 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpheqi, {{ 1, true, 8, 0 }} }, |
2800 | { Hexagon::BI__builtin_HEXAGON_A4_vcmphgti, {{ 1, true, 8, 0 }} }, |
2801 | { Hexagon::BI__builtin_HEXAGON_A4_vcmphgtui, {{ 1, false, 7, 0 }} }, |
2802 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpweqi, {{ 1, true, 8, 0 }} }, |
2803 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgti, {{ 1, true, 8, 0 }} }, |
2804 | { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgtui, {{ 1, false, 7, 0 }} }, |
2805 | { Hexagon::BI__builtin_HEXAGON_C2_bitsclri, {{ 1, false, 6, 0 }} }, |
2806 | { Hexagon::BI__builtin_HEXAGON_C2_muxii, {{ 2, true, 8, 0 }} }, |
2807 | { Hexagon::BI__builtin_HEXAGON_C4_nbitsclri, {{ 1, false, 6, 0 }} }, |
2808 | { Hexagon::BI__builtin_HEXAGON_F2_dfclass, {{ 1, false, 5, 0 }} }, |
2809 | { Hexagon::BI__builtin_HEXAGON_F2_dfimm_n, {{ 0, false, 10, 0 }} }, |
2810 | { Hexagon::BI__builtin_HEXAGON_F2_dfimm_p, {{ 0, false, 10, 0 }} }, |
2811 | { Hexagon::BI__builtin_HEXAGON_F2_sfclass, {{ 1, false, 5, 0 }} }, |
2812 | { Hexagon::BI__builtin_HEXAGON_F2_sfimm_n, {{ 0, false, 10, 0 }} }, |
2813 | { Hexagon::BI__builtin_HEXAGON_F2_sfimm_p, {{ 0, false, 10, 0 }} }, |
2814 | { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addi, {{ 2, false, 6, 0 }} }, |
2815 | { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addr_u2, {{ 1, false, 6, 2 }} }, |
2816 | { Hexagon::BI__builtin_HEXAGON_S2_addasl_rrri, {{ 2, false, 3, 0 }} }, |
2817 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_acc, {{ 2, false, 6, 0 }} }, |
2818 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_and, {{ 2, false, 6, 0 }} }, |
2819 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p, {{ 1, false, 6, 0 }} }, |
2820 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_nac, {{ 2, false, 6, 0 }} }, |
2821 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_or, {{ 2, false, 6, 0 }} }, |
2822 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_xacc, {{ 2, false, 6, 0 }} }, |
2823 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_acc, {{ 2, false, 5, 0 }} }, |
2824 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_and, {{ 2, false, 5, 0 }} }, |
2825 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r, {{ 1, false, 5, 0 }} }, |
2826 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_nac, {{ 2, false, 5, 0 }} }, |
2827 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_or, {{ 2, false, 5, 0 }} }, |
2828 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_sat, {{ 1, false, 5, 0 }} }, |
2829 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_xacc, {{ 2, false, 5, 0 }} }, |
2830 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vh, {{ 1, false, 4, 0 }} }, |
2831 | { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vw, {{ 1, false, 5, 0 }} }, |
2832 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_acc, {{ 2, false, 6, 0 }} }, |
2833 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_and, {{ 2, false, 6, 0 }} }, |
2834 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p, {{ 1, false, 6, 0 }} }, |
2835 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_nac, {{ 2, false, 6, 0 }} }, |
2836 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_or, {{ 2, false, 6, 0 }} }, |
2837 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd_goodsyntax, |
2838 | {{ 1, false, 6, 0 }} }, |
2839 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd, {{ 1, false, 6, 0 }} }, |
2840 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_acc, {{ 2, false, 5, 0 }} }, |
2841 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_and, {{ 2, false, 5, 0 }} }, |
2842 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r, {{ 1, false, 5, 0 }} }, |
2843 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_nac, {{ 2, false, 5, 0 }} }, |
2844 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_or, {{ 2, false, 5, 0 }} }, |
2845 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd_goodsyntax, |
2846 | {{ 1, false, 5, 0 }} }, |
2847 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd, {{ 1, false, 5, 0 }} }, |
2848 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_svw_trun, {{ 1, false, 5, 0 }} }, |
2849 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vh, {{ 1, false, 4, 0 }} }, |
2850 | { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vw, {{ 1, false, 5, 0 }} }, |
2851 | { Hexagon::BI__builtin_HEXAGON_S2_clrbit_i, {{ 1, false, 5, 0 }} }, |
2852 | { Hexagon::BI__builtin_HEXAGON_S2_extractu, {{ 1, false, 5, 0 }, |
2853 | { 2, false, 5, 0 }} }, |
2854 | { Hexagon::BI__builtin_HEXAGON_S2_extractup, {{ 1, false, 6, 0 }, |
2855 | { 2, false, 6, 0 }} }, |
2856 | { Hexagon::BI__builtin_HEXAGON_S2_insert, {{ 2, false, 5, 0 }, |
2857 | { 3, false, 5, 0 }} }, |
2858 | { Hexagon::BI__builtin_HEXAGON_S2_insertp, {{ 2, false, 6, 0 }, |
2859 | { 3, false, 6, 0 }} }, |
2860 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_acc, {{ 2, false, 6, 0 }} }, |
2861 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_and, {{ 2, false, 6, 0 }} }, |
2862 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p, {{ 1, false, 6, 0 }} }, |
2863 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_nac, {{ 2, false, 6, 0 }} }, |
2864 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_or, {{ 2, false, 6, 0 }} }, |
2865 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_xacc, {{ 2, false, 6, 0 }} }, |
2866 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_acc, {{ 2, false, 5, 0 }} }, |
2867 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_and, {{ 2, false, 5, 0 }} }, |
2868 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r, {{ 1, false, 5, 0 }} }, |
2869 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_nac, {{ 2, false, 5, 0 }} }, |
2870 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_or, {{ 2, false, 5, 0 }} }, |
2871 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_xacc, {{ 2, false, 5, 0 }} }, |
2872 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vh, {{ 1, false, 4, 0 }} }, |
2873 | { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vw, {{ 1, false, 5, 0 }} }, |
2874 | { Hexagon::BI__builtin_HEXAGON_S2_setbit_i, {{ 1, false, 5, 0 }} }, |
2875 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxb_goodsyntax, |
2876 | {{ 2, false, 4, 0 }, |
2877 | { 3, false, 5, 0 }} }, |
2878 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxd_goodsyntax, |
2879 | {{ 2, false, 4, 0 }, |
2880 | { 3, false, 5, 0 }} }, |
2881 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxh_goodsyntax, |
2882 | {{ 2, false, 4, 0 }, |
2883 | { 3, false, 5, 0 }} }, |
2884 | { Hexagon::BI__builtin_HEXAGON_S2_tableidxw_goodsyntax, |
2885 | {{ 2, false, 4, 0 }, |
2886 | { 3, false, 5, 0 }} }, |
2887 | { Hexagon::BI__builtin_HEXAGON_S2_togglebit_i, {{ 1, false, 5, 0 }} }, |
2888 | { Hexagon::BI__builtin_HEXAGON_S2_tstbit_i, {{ 1, false, 5, 0 }} }, |
2889 | { Hexagon::BI__builtin_HEXAGON_S2_valignib, {{ 2, false, 3, 0 }} }, |
2890 | { Hexagon::BI__builtin_HEXAGON_S2_vspliceib, {{ 2, false, 3, 0 }} }, |
2891 | { Hexagon::BI__builtin_HEXAGON_S4_addi_asl_ri, {{ 2, false, 5, 0 }} }, |
2892 | { Hexagon::BI__builtin_HEXAGON_S4_addi_lsr_ri, {{ 2, false, 5, 0 }} }, |
2893 | { Hexagon::BI__builtin_HEXAGON_S4_andi_asl_ri, {{ 2, false, 5, 0 }} }, |
2894 | { Hexagon::BI__builtin_HEXAGON_S4_andi_lsr_ri, {{ 2, false, 5, 0 }} }, |
2895 | { Hexagon::BI__builtin_HEXAGON_S4_clbaddi, {{ 1, true , 6, 0 }} }, |
2896 | { Hexagon::BI__builtin_HEXAGON_S4_clbpaddi, {{ 1, true, 6, 0 }} }, |
2897 | { Hexagon::BI__builtin_HEXAGON_S4_extract, {{ 1, false, 5, 0 }, |
2898 | { 2, false, 5, 0 }} }, |
2899 | { Hexagon::BI__builtin_HEXAGON_S4_extractp, {{ 1, false, 6, 0 }, |
2900 | { 2, false, 6, 0 }} }, |
2901 | { Hexagon::BI__builtin_HEXAGON_S4_lsli, {{ 0, true, 6, 0 }} }, |
2902 | { Hexagon::BI__builtin_HEXAGON_S4_ntstbit_i, {{ 1, false, 5, 0 }} }, |
2903 | { Hexagon::BI__builtin_HEXAGON_S4_ori_asl_ri, {{ 2, false, 5, 0 }} }, |
2904 | { Hexagon::BI__builtin_HEXAGON_S4_ori_lsr_ri, {{ 2, false, 5, 0 }} }, |
2905 | { Hexagon::BI__builtin_HEXAGON_S4_subi_asl_ri, {{ 2, false, 5, 0 }} }, |
2906 | { Hexagon::BI__builtin_HEXAGON_S4_subi_lsr_ri, {{ 2, false, 5, 0 }} }, |
2907 | { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate_acc, {{ 3, false, 2, 0 }} }, |
2908 | { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate, {{ 2, false, 2, 0 }} }, |
2909 | { Hexagon::BI__builtin_HEXAGON_S5_asrhub_rnd_sat_goodsyntax, |
2910 | {{ 1, false, 4, 0 }} }, |
2911 | { Hexagon::BI__builtin_HEXAGON_S5_asrhub_sat, {{ 1, false, 4, 0 }} }, |
2912 | { Hexagon::BI__builtin_HEXAGON_S5_vasrhrnd_goodsyntax, |
2913 | {{ 1, false, 4, 0 }} }, |
2914 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {{ 1, false, 6, 0 }} }, |
2915 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {{ 2, false, 6, 0 }} }, |
2916 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {{ 2, false, 6, 0 }} }, |
2917 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {{ 2, false, 6, 0 }} }, |
2918 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {{ 2, false, 6, 0 }} }, |
2919 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {{ 2, false, 6, 0 }} }, |
2920 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {{ 1, false, 5, 0 }} }, |
2921 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {{ 2, false, 5, 0 }} }, |
2922 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {{ 2, false, 5, 0 }} }, |
2923 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {{ 2, false, 5, 0 }} }, |
2924 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {{ 2, false, 5, 0 }} }, |
2925 | { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {{ 2, false, 5, 0 }} }, |
2926 | { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {{ 2, false, 3, 0 }} }, |
2927 | { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {{ 2, false, 3, 0 }} }, |
2928 | { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {{ 2, false, 3, 0 }} }, |
2929 | { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {{ 2, false, 3, 0 }} }, |
2930 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {{ 2, false, 1, 0 }} }, |
2931 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {{ 2, false, 1, 0 }} }, |
2932 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {{ 3, false, 1, 0 }} }, |
2933 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, |
2934 | {{ 3, false, 1, 0 }} }, |
2935 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {{ 2, false, 1, 0 }} }, |
2936 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {{ 2, false, 1, 0 }} }, |
2937 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {{ 3, false, 1, 0 }} }, |
2938 | { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, |
2939 | {{ 3, false, 1, 0 }} }, |
2940 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {{ 2, false, 1, 0 }} }, |
2941 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {{ 2, false, 1, 0 }} }, |
2942 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {{ 3, false, 1, 0 }} }, |
2943 | { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, |
2944 | {{ 3, false, 1, 0 }} }, |
2945 | }; |
2946 | |
2947 | |
2948 | |
2949 | static const bool SortOnce = |
2950 | (llvm::sort(Infos, |
2951 | [](const BuiltinInfo &LHS, const BuiltinInfo &RHS) { |
2952 | return LHS.BuiltinID < RHS.BuiltinID; |
2953 | }), |
2954 | true); |
2955 | (void)SortOnce; |
2956 | |
2957 | const BuiltinInfo *F = llvm::partition_point( |
2958 | Infos, [=](const BuiltinInfo &BI) { return BI.BuiltinID < BuiltinID; }); |
2959 | if (F == std::end(Infos) || F->BuiltinID != BuiltinID) |
2960 | return false; |
2961 | |
2962 | bool Error = false; |
2963 | |
2964 | for (const ArgInfo &A : F->Infos) { |
2965 | |
2966 | if (A.BitWidth == 0) |
2967 | continue; |
2968 | |
2969 | int32_t Min = A.IsSigned ? -(1 << (A.BitWidth - 1)) : 0; |
2970 | int32_t Max = (1 << (A.IsSigned ? A.BitWidth - 1 : A.BitWidth)) - 1; |
2971 | if (!A.Align) { |
2972 | Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max); |
2973 | } else { |
2974 | unsigned M = 1 << A.Align; |
2975 | Min *= M; |
2976 | Max *= M; |
2977 | Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max) | |
2978 | SemaBuiltinConstantArgMultiple(TheCall, A.OpNum, M); |
2979 | } |
2980 | } |
2981 | return Error; |
2982 | } |
2983 | |
2984 | bool Sema::CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, |
2985 | CallExpr *TheCall) { |
2986 | return CheckHexagonBuiltinArgument(BuiltinID, TheCall); |
2987 | } |
2988 | |
2989 | bool Sema::CheckMipsBuiltinFunctionCall(const TargetInfo &TI, |
2990 | unsigned BuiltinID, CallExpr *TheCall) { |
2991 | return CheckMipsBuiltinCpu(TI, BuiltinID, TheCall) || |
2992 | CheckMipsBuiltinArgument(BuiltinID, TheCall); |
2993 | } |
2994 | |
2995 | bool Sema::CheckMipsBuiltinCpu(const TargetInfo &TI, unsigned BuiltinID, |
2996 | CallExpr *TheCall) { |
2997 | |
2998 | if (Mips::BI__builtin_mips_addu_qb <= BuiltinID && |
2999 | BuiltinID <= Mips::BI__builtin_mips_lwx) { |
3000 | if (!TI.hasFeature("dsp")) |
3001 | return Diag(TheCall->getBeginLoc(), diag::err_mips_builtin_requires_dsp); |
3002 | } |
3003 | |
3004 | if (Mips::BI__builtin_mips_absq_s_qb <= BuiltinID && |
3005 | BuiltinID <= Mips::BI__builtin_mips_subuh_r_qb) { |
3006 | if (!TI.hasFeature("dspr2")) |
3007 | return Diag(TheCall->getBeginLoc(), |
3008 | diag::err_mips_builtin_requires_dspr2); |
3009 | } |
3010 | |
3011 | if (Mips::BI__builtin_msa_add_a_b <= BuiltinID && |
3012 | BuiltinID <= Mips::BI__builtin_msa_xori_b) { |
3013 | if (!TI.hasFeature("msa")) |
3014 | return Diag(TheCall->getBeginLoc(), diag::err_mips_builtin_requires_msa); |
3015 | } |
3016 | |
3017 | return false; |
3018 | } |
3019 | |
3020 | |
3021 | |
3022 | |
3023 | |
3024 | |
3025 | |
3026 | |
3027 | |
3028 | |
3029 | bool Sema::CheckMipsBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { |
3030 | unsigned i = 0, l = 0, u = 0, m = 0; |
3031 | switch (BuiltinID) { |
3032 | default: return false; |
3033 | case Mips::BI__builtin_mips_wrdsp: i = 1; l = 0; u = 63; break; |
3034 | case Mips::BI__builtin_mips_rddsp: i = 0; l = 0; u = 63; break; |
3035 | case Mips::BI__builtin_mips_append: i = 2; l = 0; u = 31; break; |
3036 | case Mips::BI__builtin_mips_balign: i = 2; l = 0; u = 3; break; |
3037 | case Mips::BI__builtin_mips_precr_sra_ph_w: i = 2; l = 0; u = 31; break; |
3038 | case Mips::BI__builtin_mips_precr_sra_r_ph_w: i = 2; l = 0; u = 31; break; |
3039 | case Mips::BI__builtin_mips_prepend: i = 2; l = 0; u = 31; break; |
3040 | |
3041 | |
3042 | |
3043 | case Mips::BI__builtin_msa_bclri_b: |
3044 | case Mips::BI__builtin_msa_bnegi_b: |
3045 | case Mips::BI__builtin_msa_bseti_b: |
3046 | case Mips::BI__builtin_msa_sat_s_b: |
3047 | case Mips::BI__builtin_msa_sat_u_b: |
3048 | case Mips::BI__builtin_msa_slli_b: |
3049 | case Mips::BI__builtin_msa_srai_b: |
3050 | case Mips::BI__builtin_msa_srari_b: |
3051 | case Mips::BI__builtin_msa_srli_b: |
3052 | case Mips::BI__builtin_msa_srlri_b: i = 1; l = 0; u = 7; break; |
3053 | case Mips::BI__builtin_msa_binsli_b: |
3054 | case Mips::BI__builtin_msa_binsri_b: i = 2; l = 0; u = 7; break; |
3055 | |
3056 | case Mips::BI__builtin_msa_bclri_h: |
3057 | case Mips::BI__builtin_msa_bnegi_h: |
3058 | case Mips::BI__builtin_msa_bseti_h: |
3059 | case Mips::BI__builtin_msa_sat_s_h: |
3060 | case Mips::BI__builtin_msa_sat_u_h: |
3061 | case Mips::BI__builtin_msa_slli_h: |
3062 | case Mips::BI__builtin_msa_srai_h: |
3063 | case Mips::BI__builtin_msa_srari_h: |
3064 | case Mips::BI__builtin_msa_srli_h: |
3065 | case Mips::BI__builtin_msa_srlri_h: i = 1; l = 0; u = 15; break; |
3066 | case Mips::BI__builtin_msa_binsli_h: |
3067 | case Mips::BI__builtin_msa_binsri_h: i = 2; l = 0; u = 15; break; |
3068 | |
3069 | |
3070 | |
3071 | case Mips::BI__builtin_msa_cfcmsa: |
3072 | case Mips::BI__builtin_msa_ctcmsa: i = 0; l = 0; u = 31; break; |
3073 | case Mips::BI__builtin_msa_clei_u_b: |
3074 | case Mips::BI__builtin_msa_clei_u_h: |
3075 | case Mips::BI__builtin_msa_clei_u_w: |
3076 | case Mips::BI__builtin_msa_clei_u_d: |
3077 | case Mips::BI__builtin_msa_clti_u_b: |
3078 | case Mips::BI__builtin_msa_clti_u_h: |
3079 | case Mips::BI__builtin_msa_clti_u_w: |
3080 | case Mips::BI__builtin_msa_clti_u_d: |
3081 | case Mips::BI__builtin_msa_maxi_u_b: |
3082 | case Mips::BI__builtin_msa_maxi_u_h: |
3083 | case Mips::BI__builtin_msa_maxi_u_w: |
3084 | case Mips::BI__builtin_msa_maxi_u_d: |
3085 | case Mips::BI__builtin_msa_mini_u_b: |
3086 | case Mips::BI__builtin_msa_mini_u_h: |
3087 | case Mips::BI__builtin_msa_mini_u_w: |
3088 | case Mips::BI__builtin_msa_mini_u_d: |
3089 | case Mips::BI__builtin_msa_addvi_b: |
3090 | case Mips::BI__builtin_msa_addvi_h: |
3091 | case Mips::BI__builtin_msa_addvi_w: |
3092 | case Mips::BI__builtin_msa_addvi_d: |
3093 | case Mips::BI__builtin_msa_bclri_w: |
3094 | case Mips::BI__builtin_msa_bnegi_w: |
3095 | case Mips::BI__builtin_msa_bseti_w: |
3096 | case Mips::BI__builtin_msa_sat_s_w: |
3097 | case Mips::BI__builtin_msa_sat_u_w: |
3098 | case Mips::BI__builtin_msa_slli_w: |
3099 | case Mips::BI__builtin_msa_srai_w: |
3100 | case Mips::BI__builtin_msa_srari_w: |
3101 | case Mips::BI__builtin_msa_srli_w: |
3102 | case Mips::BI__builtin_msa_srlri_w: |
3103 | case Mips::BI__builtin_msa_subvi_b: |
3104 | case Mips::BI__builtin_msa_subvi_h: |
3105 | case Mips::BI__builtin_msa_subvi_w: |
3106 | case Mips::BI__builtin_msa_subvi_d: i = 1; l = 0; u = 31; break; |
3107 | case Mips::BI__builtin_msa_binsli_w: |
3108 | case Mips::BI__builtin_msa_binsri_w: i = 2; l = 0; u = 31; break; |
3109 | |
3110 | case Mips::BI__builtin_msa_bclri_d: |
3111 | case Mips::BI__builtin_msa_bnegi_d: |
3112 | case Mips::BI__builtin_msa_bseti_d: |
3113 | case Mips::BI__builtin_msa_sat_s_d: |
3114 | case Mips::BI__builtin_msa_sat_u_d: |
3115 | case Mips::BI__builtin_msa_slli_d: |
3116 | case Mips::BI__builtin_msa_srai_d: |
3117 | case Mips::BI__builtin_msa_srari_d: |
3118 | case Mips::BI__builtin_msa_srli_d: |
3119 | case Mips::BI__builtin_msa_srlri_d: i = 1; l = 0; u = 63; break; |
3120 | case Mips::BI__builtin_msa_binsli_d: |
3121 | case Mips::BI__builtin_msa_binsri_d: i = 2; l = 0; u = 63; break; |
3122 | |
3123 | case Mips::BI__builtin_msa_ceqi_b: |
3124 | case Mips::BI__builtin_msa_ceqi_h: |
3125 | case Mips::BI__builtin_msa_ceqi_w: |
3126 | case Mips::BI__builtin_msa_ceqi_d: |
3127 | case Mips::BI__builtin_msa_clti_s_b: |
3128 | case Mips::BI__builtin_msa_clti_s_h: |
3129 | case Mips::BI__builtin_msa_clti_s_w: |
3130 | case Mips::BI__builtin_msa_clti_s_d: |
3131 | case Mips::BI__builtin_msa_clei_s_b: |
3132 | case Mips::BI__builtin_msa_clei_s_h: |
3133 | case Mips::BI__builtin_msa_clei_s_w: |
3134 | case Mips::BI__builtin_msa_clei_s_d: |
3135 | case Mips::BI__builtin_msa_maxi_s_b: |
3136 | case Mips::BI__builtin_msa_maxi_s_h: |
3137 | case Mips::BI__builtin_msa_maxi_s_w: |
3138 | case Mips::BI__builtin_msa_maxi_s_d: |
3139 | case Mips::BI__builtin_msa_mini_s_b: |
3140 | case Mips::BI__builtin_msa_mini_s_h: |
3141 | case Mips::BI__builtin_msa_mini_s_w: |
3142 | case Mips::BI__builtin_msa_mini_s_d: i = 1; l = -16; u = 15; break; |
3143 | |
3144 | case Mips::BI__builtin_msa_andi_b: |
3145 | case Mips::BI__builtin_msa_nori_b: |
3146 | case Mips::BI__builtin_msa_ori_b: |
3147 | case Mips::BI__builtin_msa_shf_b: |
3148 | case Mips::BI__builtin_msa_shf_h: |
3149 | case Mips::BI__builtin_msa_shf_w: |
3150 | case Mips::BI__builtin_msa_xori_b: i = 1; l = 0; u = 255; break; |
3151 | case Mips::BI__builtin_msa_bseli_b: |
3152 | case Mips::BI__builtin_msa_bmnzi_b: |
3153 | case Mips::BI__builtin_msa_bmzi_b: i = 2; l = 0; u = 255; break; |
3154 | |
3155 | |
3156 | case Mips::BI__builtin_msa_copy_s_b: |
3157 | case Mips::BI__builtin_msa_copy_u_b: |
3158 | case Mips::BI__builtin_msa_insve_b: |
3159 | case Mips::BI__builtin_msa_splati_b: i = 1; l = 0; u = 15; break; |
3160 | case Mips::BI__builtin_msa_sldi_b: i = 2; l = 0; u = 15; break; |
3161 | |
3162 | case Mips::BI__builtin_msa_copy_s_h: |
3163 | case Mips::BI__builtin_msa_copy_u_h: |
3164 | case Mips::BI__builtin_msa_insve_h: |
3165 | case Mips::BI__builtin_msa_splati_h: i = 1; l = 0; u = 7; break; |
3166 | case Mips::BI__builtin_msa_sldi_h: i = 2; l = 0; u = 7; break; |
3167 | |
3168 | case Mips::BI__builtin_msa_copy_s_w: |
3169 | case Mips::BI__builtin_msa_copy_u_w: |
3170 | case Mips::BI__builtin_msa_insve_w: |
3171 | case Mips::BI__builtin_msa_splati_w: i = 1; l = 0; u = 3; break; |
3172 | case Mips::BI__builtin_msa_sldi_w: i = 2; l = 0; u = 3; break; |
3173 | |
3174 | case Mips::BI__builtin_msa_copy_s_d: |
3175 | case Mips::BI__builtin_msa_copy_u_d: |
3176 | case Mips::BI__builtin_msa_insve_d: |
3177 | case Mips::BI__builtin_msa_splati_d: i = 1; l = 0; u = 1; break; |
3178 | case Mips::BI__builtin_msa_sldi_d: i = 2; l = 0; u = 1; break; |
3179 | |
3180 | |
3181 | case Mips::BI__builtin_msa_ldi_b: i = 0; l = -128; u = 255; break; |
3182 | case Mips::BI__builtin_msa_ldi_h: |
3183 | case Mips::BI__builtin_msa_ldi_w: |
3184 | case Mips::BI__builtin_msa_ldi_d: i = 0; l = -512; u = 511; break; |
3185 | case Mips::BI__builtin_msa_ld_b: i = 1; l = -512; u = 511; m = 1; break; |
3186 | case Mips::BI__builtin_msa_ld_h: i = 1; l = -1024; u = 1022; m = 2; break; |
3187 | case Mips::BI__builtin_msa_ld_w: i = 1; l = -2048; u = 2044; m = 4; break; |
3188 | case Mips::BI__builtin_msa_ld_d: i = 1; l = -4096; u = 4088; m = 8; break; |
3189 | case Mips::BI__builtin_msa_ldr_d: i = 1; l = -4096; u = 4088; m = 8; break; |
3190 | case Mips::BI__builtin_msa_ldr_w: i = 1; l = -2048; u = 2044; m = 4; break; |
3191 | case Mips::BI__builtin_msa_st_b: i = 2; l = -512; u = 511; m = 1; break; |
3192 | case Mips::BI__builtin_msa_st_h: i = 2; l = -1024; u = 1022; m = 2; break; |
3193 | case Mips::BI__builtin_msa_st_w: i = 2; l = -2048; u = 2044; m = 4; break; |
3194 | case Mips::BI__builtin_msa_st_d: i = 2; l = -4096; u = 4088; m = 8; break; |
3195 | case Mips::BI__builtin_msa_str_d: i = 2; l = -4096; u = 4088; m = 8; break; |
3196 | case Mips::BI__builtin_msa_str_w: i = 2; l = -2048; u = 2044; m = 4; break; |
3197 | } |
3198 | |
3199 | if (!m) |
3200 | return SemaBuiltinConstantArgRange(TheCall, i, l, u); |
3201 | |
3202 | return SemaBuiltinConstantArgRange(TheCall, i, l, u) || |
3203 | SemaBuiltinConstantArgMultiple(TheCall, i, m); |
3204 | } |
3205 | |
3206 | |
3207 | |
3208 | |
3209 | |
3210 | |
3211 | |
3212 | static QualType DecodePPCMMATypeFromStr(ASTContext &Context, const char *&Str, |
3213 | unsigned &Mask) { |
3214 | bool RequireICE = false; |
3215 | ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; |
3216 | switch (*Str++) { |
3217 | case 'V': |
3218 | return Context.getVectorType(Context.UnsignedCharTy, 16, |
3219 | VectorType::VectorKind::AltiVecVector); |
3220 | case 'i': { |
3221 | char *End; |
3222 | unsigned size = strtoul(Str, &End, 10); |
3223 | assert(End != Str && "Missing constant parameter constraint"); |
3224 | Str = End; |
3225 | Mask = size; |
3226 | return Context.IntTy; |
3227 | } |
3228 | case 'W': { |
3229 | char *End; |
3230 | unsigned size = strtoul(Str, &End, 10); |
3231 | assert(End != Str && "Missing PowerPC MMA type size"); |
3232 | Str = End; |
3233 | QualType Type; |
3234 | switch (size) { |
3235 | #define PPC_VECTOR_TYPE(typeName, Id, size) \ |
3236 | case size: Type = Context.Id##Ty; break; |
3237 | #include "clang/Basic/PPCTypes.def" |
3238 | default: llvm_unreachable("Invalid PowerPC MMA vector type"); |
3239 | } |
3240 | bool CheckVectorArgs = false; |
3241 | while (!CheckVectorArgs) { |
3242 | switch (*Str++) { |
3243 | case '*': |
3244 | Type = Context.getPointerType(Type); |
3245 | break; |
3246 | case 'C': |
3247 | Type = Type.withConst(); |
3248 | break; |
3249 | default: |
3250 | CheckVectorArgs = true; |
3251 | --Str; |
3252 | break; |
3253 | } |
3254 | } |
3255 | return Type; |
3256 | } |
3257 | default: |
3258 | return Context.DecodeTypeStr(--Str, Context, Error, RequireICE, true); |
3259 | } |
3260 | } |
3261 | |
3262 | static bool isPPC_64Builtin(unsigned BuiltinID) { |
3263 | |
3264 | switch (BuiltinID) { |
3265 | case PPC::BI__builtin_divde: |
3266 | case PPC::BI__builtin_divdeu: |
3267 | case PPC::BI__builtin_bpermd: |
3268 | case PPC::BI__builtin_ppc_ldarx: |
3269 | case PPC::BI__builtin_ppc_stdcx: |
3270 | case PPC::BI__builtin_ppc_tdw: |
3271 | case PPC::BI__builtin_ppc_trapd: |
3272 | case PPC::BI__builtin_ppc_cmpeqb: |
3273 | case PPC::BI__builtin_ppc_setb: |
3274 | case PPC::BI__builtin_ppc_mulhd: |
3275 | case PPC::BI__builtin_ppc_mulhdu: |
3276 | case PPC::BI__builtin_ppc_maddhd: |
3277 | case PPC::BI__builtin_ppc_maddhdu: |
3278 | case PPC::BI__builtin_ppc_maddld: |
3279 | case PPC::BI__builtin_ppc_load8r: |
3280 | case PPC::BI__builtin_ppc_store8r: |
3281 | case PPC::BI__builtin_ppc_insert_exp: |
3282 | case PPC::BI__builtin_ppc_extract_sig: |
3283 | return true; |
3284 | } |
3285 | return false; |
3286 | } |
3287 | |
3288 | static bool SemaFeatureCheck(Sema &S, CallExpr *TheCall, |
3289 | StringRef FeatureToCheck, unsigned DiagID, |
3290 | StringRef DiagArg = "") { |
3291 | if (S.Context.getTargetInfo().hasFeature(FeatureToCheck)) |
3292 | return false; |
3293 | |
3294 | if (DiagArg.empty()) |
3295 | S.Diag(TheCall->getBeginLoc(), DiagID) << TheCall->getSourceRange(); |
3296 | else |
3297 | S.Diag(TheCall->getBeginLoc(), DiagID) |
3298 | << DiagArg << TheCall->getSourceRange(); |
3299 | |
3300 | return true; |
3301 | } |
3302 | |
3303 | |
3304 | |
3305 | |
3306 | |
3307 | bool Sema::SemaValueIsRunOfOnes(CallExpr *TheCall, unsigned ArgNum) { |
3308 | llvm::APSInt Result; |
3309 | |
3310 | Expr *Arg = TheCall->getArg(ArgNum); |
3311 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
3312 | return false; |
3313 | |
3314 | |
3315 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
3316 | return true; |
3317 | |
3318 | |
3319 | if (Result.isShiftedMask() || (~Result).isShiftedMask()) |
3320 | return false; |
3321 | |
3322 | return Diag(TheCall->getBeginLoc(), |
3323 | diag::err_argument_not_contiguous_bit_field) |
3324 | << ArgNum << Arg->getSourceRange(); |
3325 | } |
3326 | |
3327 | bool Sema::CheckPPCBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
3328 | CallExpr *TheCall) { |
3329 | unsigned i = 0, l = 0, u = 0; |
3330 | bool IsTarget64Bit = TI.getTypeWidth(TI.getIntPtrType()) == 64; |
3331 | llvm::APSInt Result; |
3332 | |
3333 | if (isPPC_64Builtin(BuiltinID) && !IsTarget64Bit) |
3334 | return Diag(TheCall->getBeginLoc(), diag::err_64_bit_builtin_32_bit_tgt) |
3335 | << TheCall->getSourceRange(); |
3336 | |
3337 | switch (BuiltinID) { |
3338 | default: return false; |
3339 | case PPC::BI__builtin_altivec_crypto_vshasigmaw: |
3340 | case PPC::BI__builtin_altivec_crypto_vshasigmad: |
3341 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || |
3342 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 15); |
3343 | case PPC::BI__builtin_altivec_dss: |
3344 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 3); |
3345 | case PPC::BI__builtin_tbegin: |
3346 | case PPC::BI__builtin_tend: i = 0; l = 0; u = 1; break; |
3347 | case PPC::BI__builtin_tsr: i = 0; l = 0; u = 7; break; |
3348 | case PPC::BI__builtin_tabortwc: |
3349 | case PPC::BI__builtin_tabortdc: i = 0; l = 0; u = 31; break; |
3350 | case PPC::BI__builtin_tabortwci: |
3351 | case PPC::BI__builtin_tabortdci: |
3352 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31) || |
3353 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 31); |
3354 | case PPC::BI__builtin_altivec_dst: |
3355 | case PPC::BI__builtin_altivec_dstt: |
3356 | case PPC::BI__builtin_altivec_dstst: |
3357 | case PPC::BI__builtin_altivec_dststt: |
3358 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, 3); |
3359 | case PPC::BI__builtin_vsx_xxpermdi: |
3360 | case PPC::BI__builtin_vsx_xxsldwi: |
3361 | return SemaBuiltinVSX(TheCall); |
3362 | case PPC::BI__builtin_divwe: |
3363 | case PPC::BI__builtin_divweu: |
3364 | case PPC::BI__builtin_divde: |
3365 | case PPC::BI__builtin_divdeu: |
3366 | return SemaFeatureCheck(*this, TheCall, "extdiv", |
3367 | diag::err_ppc_builtin_only_on_arch, "7"); |
3368 | case PPC::BI__builtin_bpermd: |
3369 | return SemaFeatureCheck(*this, TheCall, "bpermd", |
3370 | diag::err_ppc_builtin_only_on_arch, "7"); |
3371 | case PPC::BI__builtin_unpack_vector_int128: |
3372 | return SemaFeatureCheck(*this, TheCall, "vsx", |
3373 | diag::err_ppc_builtin_only_on_arch, "7") || |
3374 | SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
3375 | case PPC::BI__builtin_pack_vector_int128: |
3376 | return SemaFeatureCheck(*this, TheCall, "vsx", |
3377 | diag::err_ppc_builtin_only_on_arch, "7"); |
3378 | case PPC::BI__builtin_altivec_vgnb: |
3379 | return SemaBuiltinConstantArgRange(TheCall, 1, 2, 7); |
3380 | case PPC::BI__builtin_altivec_vec_replace_elt: |
3381 | case PPC::BI__builtin_altivec_vec_replace_unaligned: { |
3382 | QualType VecTy = TheCall->getArg(0)->getType(); |
3383 | QualType EltTy = TheCall->getArg(1)->getType(); |
3384 | unsigned Width = Context.getIntWidth(EltTy); |
3385 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, Width == 32 ? 12 : 8) || |
3386 | !isEltOfVectorTy(Context, TheCall, *this, VecTy, EltTy); |
3387 | } |
3388 | case PPC::BI__builtin_vsx_xxeval: |
3389 | return SemaBuiltinConstantArgRange(TheCall, 3, 0, 255); |
3390 | case PPC::BI__builtin_altivec_vsldbi: |
3391 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, 7); |
3392 | case PPC::BI__builtin_altivec_vsrdbi: |
3393 | return SemaBuiltinConstantArgRange(TheCall, 2, 0, 7); |
3394 | case PPC::BI__builtin_vsx_xxpermx: |
3395 | return SemaBuiltinConstantArgRange(TheCall, 3, 0, 7); |
3396 | case PPC::BI__builtin_ppc_tw: |
3397 | case PPC::BI__builtin_ppc_tdw: |
3398 | return SemaBuiltinConstantArgRange(TheCall, 2, 1, 31); |
3399 | case PPC::BI__builtin_ppc_cmpeqb: |
3400 | case PPC::BI__builtin_ppc_setb: |
3401 | case PPC::BI__builtin_ppc_maddhd: |
3402 | case PPC::BI__builtin_ppc_maddhdu: |
3403 | case PPC::BI__builtin_ppc_maddld: |
3404 | return SemaFeatureCheck(*this, TheCall, "isa-v30-instructions", |
3405 | diag::err_ppc_builtin_only_on_arch, "9"); |
3406 | case PPC::BI__builtin_ppc_cmprb: |
3407 | return SemaFeatureCheck(*this, TheCall, "isa-v30-instructions", |
3408 | diag::err_ppc_builtin_only_on_arch, "9") || |
3409 | SemaBuiltinConstantArgRange(TheCall, 0, 0, 1); |
3410 | |
3411 | |
3412 | case PPC::BI__builtin_ppc_rlwnm: |
3413 | return SemaBuiltinConstantArg(TheCall, 1, Result) || |
3414 | SemaValueIsRunOfOnes(TheCall, 2); |
3415 | case PPC::BI__builtin_ppc_rlwimi: |
3416 | case PPC::BI__builtin_ppc_rldimi: |
3417 | return SemaBuiltinConstantArg(TheCall, 2, Result) || |
3418 | SemaValueIsRunOfOnes(TheCall, 3); |
3419 | case PPC::BI__builtin_ppc_extract_exp: |
3420 | case PPC::BI__builtin_ppc_extract_sig: |
3421 | case PPC::BI__builtin_ppc_insert_exp: |
3422 | return SemaFeatureCheck(*this, TheCall, "power9-vector", |
3423 | diag::err_ppc_builtin_only_on_arch, "9"); |
3424 | case PPC::BI__builtin_ppc_mtfsb0: |
3425 | case PPC::BI__builtin_ppc_mtfsb1: |
3426 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31); |
3427 | case PPC::BI__builtin_ppc_mtfsf: |
3428 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 255); |
3429 | case PPC::BI__builtin_ppc_mtfsfi: |
3430 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 7) || |
3431 | SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
3432 | case PPC::BI__builtin_ppc_alignx: |
3433 | return SemaBuiltinConstantArgPower2(TheCall, 0); |
3434 | case PPC::BI__builtin_ppc_rdlam: |
3435 | return SemaValueIsRunOfOnes(TheCall, 2); |
3436 | case PPC::BI__builtin_ppc_icbt: |
3437 | case PPC::BI__builtin_ppc_sthcx: |
3438 | case PPC::BI__builtin_ppc_stbcx: |
3439 | case PPC::BI__builtin_ppc_lharx: |
3440 | case PPC::BI__builtin_ppc_lbarx: |
3441 | return SemaFeatureCheck(*this, TheCall, "isa-v207-instructions", |
3442 | diag::err_ppc_builtin_only_on_arch, "8"); |
3443 | case PPC::BI__builtin_vsx_ldrmb: |
3444 | case PPC::BI__builtin_vsx_strmb: |
3445 | return SemaFeatureCheck(*this, TheCall, "isa-v207-instructions", |
3446 | diag::err_ppc_builtin_only_on_arch, "8") || |
3447 | SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); |
3448 | #define CUSTOM_BUILTIN(Name, Intr, Types, Acc) \ |
3449 | case PPC::BI__builtin_##Name: \ |
3450 | return SemaBuiltinPPCMMACall(TheCall, Types); |
3451 | #include "clang/Basic/BuiltinsPPC.def" |
3452 | } |
3453 | return SemaBuiltinConstantArgRange(TheCall, i, l, u); |
3454 | } |
3455 | |
3456 | |
3457 | |
3458 | bool Sema::CheckPPCMMAType(QualType Type, SourceLocation TypeLoc) { |
3459 | if (Type->isPointerType() || Type->isArrayType()) |
3460 | return false; |
3461 | |
3462 | QualType CoreType = Type.getCanonicalType().getUnqualifiedType(); |
3463 | #define PPC_VECTOR_TYPE(Name, Id, Size) || CoreType == Context.Id##Ty |
3464 | if (false |
3465 | #include "clang/Basic/PPCTypes.def" |
3466 | ) { |
3467 | Diag(TypeLoc, diag::err_ppc_invalid_use_mma_type); |
3468 | return true; |
3469 | } |
3470 | return false; |
3471 | } |
3472 | |
3473 | bool Sema::CheckAMDGCNBuiltinFunctionCall(unsigned BuiltinID, |
3474 | CallExpr *TheCall) { |
3475 | |
3476 | unsigned OrderIndex, ScopeIndex; |
3477 | switch (BuiltinID) { |
3478 | case AMDGPU::BI__builtin_amdgcn_atomic_inc32: |
3479 | case AMDGPU::BI__builtin_amdgcn_atomic_inc64: |
3480 | case AMDGPU::BI__builtin_amdgcn_atomic_dec32: |
3481 | case AMDGPU::BI__builtin_amdgcn_atomic_dec64: |
3482 | OrderIndex = 2; |
3483 | ScopeIndex = 3; |
3484 | break; |
3485 | case AMDGPU::BI__builtin_amdgcn_fence: |
3486 | OrderIndex = 0; |
3487 | ScopeIndex = 1; |
3488 | break; |
3489 | default: |
3490 | return false; |
3491 | } |
3492 | |
3493 | ExprResult Arg = TheCall->getArg(OrderIndex); |
3494 | auto ArgExpr = Arg.get(); |
3495 | Expr::EvalResult ArgResult; |
3496 | |
3497 | if (!ArgExpr->EvaluateAsInt(ArgResult, Context)) |
3498 | return Diag(ArgExpr->getExprLoc(), diag::err_typecheck_expect_int) |
3499 | << ArgExpr->getType(); |
3500 | auto Ord = ArgResult.Val.getInt().getZExtValue(); |
3501 | |
3502 | |
3503 | |
3504 | if (!llvm::isValidAtomicOrderingCABI(Ord)) |
3505 | return Diag(ArgExpr->getBeginLoc(), |
3506 | diag::warn_atomic_op_has_invalid_memory_order) |
3507 | << ArgExpr->getSourceRange(); |
3508 | switch (static_cast<llvm::AtomicOrderingCABI>(Ord)) { |
3509 | case llvm::AtomicOrderingCABI::relaxed: |
3510 | case llvm::AtomicOrderingCABI::consume: |
3511 | if (BuiltinID == AMDGPU::BI__builtin_amdgcn_fence) |
3512 | return Diag(ArgExpr->getBeginLoc(), |
3513 | diag::warn_atomic_op_has_invalid_memory_order) |
3514 | << ArgExpr->getSourceRange(); |
3515 | break; |
3516 | case llvm::AtomicOrderingCABI::acquire: |
3517 | case llvm::AtomicOrderingCABI::release: |
3518 | case llvm::AtomicOrderingCABI::acq_rel: |
3519 | case llvm::AtomicOrderingCABI::seq_cst: |
3520 | break; |
3521 | } |
3522 | |
3523 | Arg = TheCall->getArg(ScopeIndex); |
3524 | ArgExpr = Arg.get(); |
3525 | Expr::EvalResult ArgResult1; |
3526 | |
3527 | if (!ArgExpr->EvaluateAsConstantExpr(ArgResult1, Context)) |
3528 | return Diag(ArgExpr->getExprLoc(), diag::err_expr_not_string_literal) |
3529 | << ArgExpr->getType(); |
3530 | |
3531 | return false; |
3532 | } |
3533 | |
3534 | bool Sema::CheckRISCVLMUL(CallExpr *TheCall, unsigned ArgNum) { |
3535 | llvm::APSInt Result; |
3536 | |
3537 | |
3538 | Expr *Arg = TheCall->getArg(ArgNum); |
3539 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
3540 | return false; |
3541 | |
3542 | |
3543 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
3544 | return true; |
3545 | |
3546 | int64_t Val = Result.getSExtValue(); |
3547 | if ((Val >= 0 && Val <= 3) || (Val >= 5 && Val <= 7)) |
3548 | return false; |
3549 | |
3550 | return Diag(TheCall->getBeginLoc(), diag::err_riscv_builtin_invalid_lmul) |
3551 | << Arg->getSourceRange(); |
3552 | } |
3553 | |
3554 | bool Sema::CheckRISCVBuiltinFunctionCall(const TargetInfo &TI, |
3555 | unsigned BuiltinID, |
3556 | CallExpr *TheCall) { |
3557 | |
3558 | |
3559 | bool FeatureMissing = false; |
3560 | SmallVector<StringRef> ReqFeatures; |
3561 | StringRef Features = Context.BuiltinInfo.getRequiredFeatures(BuiltinID); |
3562 | Features.split(ReqFeatures, ','); |
3563 | |
3564 | |
3565 | for (StringRef F : ReqFeatures) { |
3566 | if (TI.hasFeature(F)) |
3567 | continue; |
3568 | |
3569 | |
3570 | |
3571 | if (F == "64bit") |
3572 | F = "RV64"; |
3573 | |
3574 | |
3575 | F.consume_front("experimental-"); |
3576 | std::string FeatureStr = F.str(); |
3577 | FeatureStr[0] = std::toupper(FeatureStr[0]); |
3578 | |
3579 | |
3580 | FeatureMissing = true; |
3581 | Diag(TheCall->getBeginLoc(), diag::err_riscv_builtin_requires_extension) |
3582 | << TheCall->getSourceRange() << StringRef(FeatureStr); |
3583 | } |
3584 | |
3585 | if (FeatureMissing) |
3586 | return true; |
3587 | |
3588 | switch (BuiltinID) { |
3589 | case RISCV::BI__builtin_rvv_vsetvli: |
3590 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3) || |
3591 | CheckRISCVLMUL(TheCall, 2); |
3592 | case RISCV::BI__builtin_rvv_vsetvlimax: |
3593 | return SemaBuiltinConstantArgRange(TheCall, 0, 0, 3) || |
3594 | CheckRISCVLMUL(TheCall, 1); |
3595 | case RISCV::BI__builtin_rvv_vget_v_i8m2_i8m1: |
3596 | case RISCV::BI__builtin_rvv_vget_v_i16m2_i16m1: |
3597 | case RISCV::BI__builtin_rvv_vget_v_i32m2_i32m1: |
3598 | case RISCV::BI__builtin_rvv_vget_v_i64m2_i64m1: |
3599 | case RISCV::BI__builtin_rvv_vget_v_f32m2_f32m1: |
3600 | case RISCV::BI__builtin_rvv_vget_v_f64m2_f64m1: |
3601 | case RISCV::BI__builtin_rvv_vget_v_u8m2_u8m1: |
3602 | case RISCV::BI__builtin_rvv_vget_v_u16m2_u16m1: |
3603 | case RISCV::BI__builtin_rvv_vget_v_u32m2_u32m1: |
3604 | case RISCV::BI__builtin_rvv_vget_v_u64m2_u64m1: |
3605 | case RISCV::BI__builtin_rvv_vget_v_i8m4_i8m2: |
3606 | case RISCV::BI__builtin_rvv_vget_v_i16m4_i16m2: |
3607 | case RISCV::BI__builtin_rvv_vget_v_i32m4_i32m2: |
3608 | case RISCV::BI__builtin_rvv_vget_v_i64m4_i64m2: |
3609 | case RISCV::BI__builtin_rvv_vget_v_f32m4_f32m2: |
3610 | case RISCV::BI__builtin_rvv_vget_v_f64m4_f64m2: |
3611 | case RISCV::BI__builtin_rvv_vget_v_u8m4_u8m2: |
3612 | case RISCV::BI__builtin_rvv_vget_v_u16m4_u16m2: |
3613 | case RISCV::BI__builtin_rvv_vget_v_u32m4_u32m2: |
3614 | case RISCV::BI__builtin_rvv_vget_v_u64m4_u64m2: |
3615 | case RISCV::BI__builtin_rvv_vget_v_i8m8_i8m4: |
3616 | case RISCV::BI__builtin_rvv_vget_v_i16m8_i16m4: |
3617 | case RISCV::BI__builtin_rvv_vget_v_i32m8_i32m4: |
3618 | case RISCV::BI__builtin_rvv_vget_v_i64m8_i64m4: |
3619 | case RISCV::BI__builtin_rvv_vget_v_f32m8_f32m4: |
3620 | case RISCV::BI__builtin_rvv_vget_v_f64m8_f64m4: |
3621 | case RISCV::BI__builtin_rvv_vget_v_u8m8_u8m4: |
3622 | case RISCV::BI__builtin_rvv_vget_v_u16m8_u16m4: |
3623 | case RISCV::BI__builtin_rvv_vget_v_u32m8_u32m4: |
3624 | case RISCV::BI__builtin_rvv_vget_v_u64m8_u64m4: |
3625 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
3626 | case RISCV::BI__builtin_rvv_vget_v_i8m4_i8m1: |
3627 | case RISCV::BI__builtin_rvv_vget_v_i16m4_i16m1: |
3628 | case RISCV::BI__builtin_rvv_vget_v_i32m4_i32m1: |
3629 | case RISCV::BI__builtin_rvv_vget_v_i64m4_i64m1: |
3630 | case RISCV::BI__builtin_rvv_vget_v_f32m4_f32m1: |
3631 | case RISCV::BI__builtin_rvv_vget_v_f64m4_f64m1: |
3632 | case RISCV::BI__builtin_rvv_vget_v_u8m4_u8m1: |
3633 | case RISCV::BI__builtin_rvv_vget_v_u16m4_u16m1: |
3634 | case RISCV::BI__builtin_rvv_vget_v_u32m4_u32m1: |
3635 | case RISCV::BI__builtin_rvv_vget_v_u64m4_u64m1: |
3636 | case RISCV::BI__builtin_rvv_vget_v_i8m8_i8m2: |
3637 | case RISCV::BI__builtin_rvv_vget_v_i16m8_i16m2: |
3638 | case RISCV::BI__builtin_rvv_vget_v_i32m8_i32m2: |
3639 | case RISCV::BI__builtin_rvv_vget_v_i64m8_i64m2: |
3640 | case RISCV::BI__builtin_rvv_vget_v_f32m8_f32m2: |
3641 | case RISCV::BI__builtin_rvv_vget_v_f64m8_f64m2: |
3642 | case RISCV::BI__builtin_rvv_vget_v_u8m8_u8m2: |
3643 | case RISCV::BI__builtin_rvv_vget_v_u16m8_u16m2: |
3644 | case RISCV::BI__builtin_rvv_vget_v_u32m8_u32m2: |
3645 | case RISCV::BI__builtin_rvv_vget_v_u64m8_u64m2: |
3646 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); |
3647 | case RISCV::BI__builtin_rvv_vget_v_i8m8_i8m1: |
3648 | case RISCV::BI__builtin_rvv_vget_v_i16m8_i16m1: |
3649 | case RISCV::BI__builtin_rvv_vget_v_i32m8_i32m1: |
3650 | case RISCV::BI__builtin_rvv_vget_v_i64m8_i64m1: |
3651 | case RISCV::BI__builtin_rvv_vget_v_f32m8_f32m1: |
3652 | case RISCV::BI__builtin_rvv_vget_v_f64m8_f64m1: |
3653 | case RISCV::BI__builtin_rvv_vget_v_u8m8_u8m1: |
3654 | case RISCV::BI__builtin_rvv_vget_v_u16m8_u16m1: |
3655 | case RISCV::BI__builtin_rvv_vget_v_u32m8_u32m1: |
3656 | case RISCV::BI__builtin_rvv_vget_v_u64m8_u64m1: |
3657 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 7); |
3658 | case RISCV::BI__builtin_rvv_vset_v_i8m1_i8m2: |
3659 | case RISCV::BI__builtin_rvv_vset_v_i16m1_i16m2: |
3660 | case RISCV::BI__builtin_rvv_vset_v_i32m1_i32m2: |
3661 | case RISCV::BI__builtin_rvv_vset_v_i64m1_i64m2: |
3662 | case RISCV::BI__builtin_rvv_vset_v_f32m1_f32m2: |
3663 | case RISCV::BI__builtin_rvv_vset_v_f64m1_f64m2: |
3664 | case RISCV::BI__builtin_rvv_vset_v_u8m1_u8m2: |
3665 | case RISCV::BI__builtin_rvv_vset_v_u16m1_u16m2: |
3666 | case RISCV::BI__builtin_rvv_vset_v_u32m1_u32m2: |
3667 | case RISCV::BI__builtin_rvv_vset_v_u64m1_u64m2: |
3668 | case RISCV::BI__builtin_rvv_vset_v_i8m2_i8m4: |
3669 | case RISCV::BI__builtin_rvv_vset_v_i16m2_i16m4: |
3670 | case RISCV::BI__builtin_rvv_vset_v_i32m2_i32m4: |
3671 | case RISCV::BI__builtin_rvv_vset_v_i64m2_i64m4: |
3672 | case RISCV::BI__builtin_rvv_vset_v_f32m2_f32m4: |
3673 | case RISCV::BI__builtin_rvv_vset_v_f64m2_f64m4: |
3674 | case RISCV::BI__builtin_rvv_vset_v_u8m2_u8m4: |
3675 | case RISCV::BI__builtin_rvv_vset_v_u16m2_u16m4: |
3676 | case RISCV::BI__builtin_rvv_vset_v_u32m2_u32m4: |
3677 | case RISCV::BI__builtin_rvv_vset_v_u64m2_u64m4: |
3678 | case RISCV::BI__builtin_rvv_vset_v_i8m4_i8m8: |
3679 | case RISCV::BI__builtin_rvv_vset_v_i16m4_i16m8: |
3680 | case RISCV::BI__builtin_rvv_vset_v_i32m4_i32m8: |
3681 | case RISCV::BI__builtin_rvv_vset_v_i64m4_i64m8: |
3682 | case RISCV::BI__builtin_rvv_vset_v_f32m4_f32m8: |
3683 | case RISCV::BI__builtin_rvv_vset_v_f64m4_f64m8: |
3684 | case RISCV::BI__builtin_rvv_vset_v_u8m4_u8m8: |
3685 | case RISCV::BI__builtin_rvv_vset_v_u16m4_u16m8: |
3686 | case RISCV::BI__builtin_rvv_vset_v_u32m4_u32m8: |
3687 | case RISCV::BI__builtin_rvv_vset_v_u64m4_u64m8: |
3688 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); |
3689 | case RISCV::BI__builtin_rvv_vset_v_i8m1_i8m4: |
3690 | case RISCV::BI__builtin_rvv_vset_v_i16m1_i16m4: |
3691 | case RISCV::BI__builtin_rvv_vset_v_i32m1_i32m4: |
3692 | case RISCV::BI__builtin_rvv_vset_v_i64m1_i64m4: |
3693 | case RISCV::BI__builtin_rvv_vset_v_f32m1_f32m4: |
3694 | case RISCV::BI__builtin_rvv_vset_v_f64m1_f64m4: |
3695 | case RISCV::BI__builtin_rvv_vset_v_u8m1_u8m4: |
3696 | case RISCV::BI__builtin_rvv_vset_v_u16m1_u16m4: |
3697 | case RISCV::BI__builtin_rvv_vset_v_u32m1_u32m4: |
3698 | case RISCV::BI__builtin_rvv_vset_v_u64m1_u64m4: |
3699 | case RISCV::BI__builtin_rvv_vset_v_i8m2_i8m8: |
3700 | case RISCV::BI__builtin_rvv_vset_v_i16m2_i16m8: |
3701 | case RISCV::BI__builtin_rvv_vset_v_i32m2_i32m8: |
3702 | case RISCV::BI__builtin_rvv_vset_v_i64m2_i64m8: |
3703 | case RISCV::BI__builtin_rvv_vset_v_f32m2_f32m8: |
3704 | case RISCV::BI__builtin_rvv_vset_v_f64m2_f64m8: |
3705 | case RISCV::BI__builtin_rvv_vset_v_u8m2_u8m8: |
3706 | case RISCV::BI__builtin_rvv_vset_v_u16m2_u16m8: |
3707 | case RISCV::BI__builtin_rvv_vset_v_u32m2_u32m8: |
3708 | case RISCV::BI__builtin_rvv_vset_v_u64m2_u64m8: |
3709 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); |
3710 | case RISCV::BI__builtin_rvv_vset_v_i8m1_i8m8: |
3711 | case RISCV::BI__builtin_rvv_vset_v_i16m1_i16m8: |
3712 | case RISCV::BI__builtin_rvv_vset_v_i32m1_i32m8: |
3713 | case RISCV::BI__builtin_rvv_vset_v_i64m1_i64m8: |
3714 | case RISCV::BI__builtin_rvv_vset_v_f32m1_f32m8: |
3715 | case RISCV::BI__builtin_rvv_vset_v_f64m1_f64m8: |
3716 | case RISCV::BI__builtin_rvv_vset_v_u8m1_u8m8: |
3717 | case RISCV::BI__builtin_rvv_vset_v_u16m1_u16m8: |
3718 | case RISCV::BI__builtin_rvv_vset_v_u32m1_u32m8: |
3719 | case RISCV::BI__builtin_rvv_vset_v_u64m1_u64m8: |
3720 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 7); |
3721 | } |
3722 | |
3723 | return false; |
3724 | } |
3725 | |
3726 | bool Sema::CheckSystemZBuiltinFunctionCall(unsigned BuiltinID, |
3727 | CallExpr *TheCall) { |
3728 | if (BuiltinID == SystemZ::BI__builtin_tabort) { |
3729 | Expr *Arg = TheCall->getArg(0); |
3730 | if (Optional<llvm::APSInt> AbortCode = Arg->getIntegerConstantExpr(Context)) |
3731 | if (AbortCode->getSExtValue() >= 0 && AbortCode->getSExtValue() < 256) |
3732 | return Diag(Arg->getBeginLoc(), diag::err_systemz_invalid_tabort_code) |
3733 | << Arg->getSourceRange(); |
3734 | } |
3735 | |
3736 | |
3737 | |
3738 | unsigned i = 0, l = 0, u = 0; |
3739 | switch (BuiltinID) { |
3740 | default: return false; |
3741 | case SystemZ::BI__builtin_s390_lcbb: i = 1; l = 0; u = 15; break; |
3742 | case SystemZ::BI__builtin_s390_verimb: |
3743 | case SystemZ::BI__builtin_s390_verimh: |
3744 | case SystemZ::BI__builtin_s390_verimf: |
3745 | case SystemZ::BI__builtin_s390_verimg: i = 3; l = 0; u = 255; break; |
3746 | case SystemZ::BI__builtin_s390_vfaeb: |
3747 | case SystemZ::BI__builtin_s390_vfaeh: |
3748 | case SystemZ::BI__builtin_s390_vfaef: |
3749 | case SystemZ::BI__builtin_s390_vfaebs: |
3750 | case SystemZ::BI__builtin_s390_vfaehs: |
3751 | case SystemZ::BI__builtin_s390_vfaefs: |
3752 | case SystemZ::BI__builtin_s390_vfaezb: |
3753 | case SystemZ::BI__builtin_s390_vfaezh: |
3754 | case SystemZ::BI__builtin_s390_vfaezf: |
3755 | case SystemZ::BI__builtin_s390_vfaezbs: |
3756 | case SystemZ::BI__builtin_s390_vfaezhs: |
3757 | case SystemZ::BI__builtin_s390_vfaezfs: i = 2; l = 0; u = 15; break; |
3758 | case SystemZ::BI__builtin_s390_vfisb: |
3759 | case SystemZ::BI__builtin_s390_vfidb: |
3760 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15) || |
3761 | SemaBuiltinConstantArgRange(TheCall, 2, 0, 15); |
3762 | case SystemZ::BI__builtin_s390_vftcisb: |
3763 | case SystemZ::BI__builtin_s390_vftcidb: i = 1; l = 0; u = 4095; break; |
3764 | case SystemZ::BI__builtin_s390_vlbb: i = 1; l = 0; u = 15; break; |
3765 | case SystemZ::BI__builtin_s390_vpdi: i = 2; l = 0; u = 15; break; |
3766 | case SystemZ::BI__builtin_s390_vsldb: i = 2; l = 0; u = 15; break; |
3767 | case SystemZ::BI__builtin_s390_vstrcb: |
3768 | case SystemZ::BI__builtin_s390_vstrch: |
3769 | case SystemZ::BI__builtin_s390_vstrcf: |
3770 | case SystemZ::BI__builtin_s390_vstrczb: |
3771 | case SystemZ::BI__builtin_s390_vstrczh: |
3772 | case SystemZ::BI__builtin_s390_vstrczf: |
3773 | case SystemZ::BI__builtin_s390_vstrcbs: |
3774 | case SystemZ::BI__builtin_s390_vstrchs: |
3775 | case SystemZ::BI__builtin_s390_vstrcfs: |
3776 | case SystemZ::BI__builtin_s390_vstrczbs: |
3777 | case SystemZ::BI__builtin_s390_vstrczhs: |
3778 | case SystemZ::BI__builtin_s390_vstrczfs: i = 3; l = 0; u = 15; break; |
3779 | case SystemZ::BI__builtin_s390_vmslg: i = 3; l = 0; u = 15; break; |
3780 | case SystemZ::BI__builtin_s390_vfminsb: |
3781 | case SystemZ::BI__builtin_s390_vfmaxsb: |
3782 | case SystemZ::BI__builtin_s390_vfmindb: |
3783 | case SystemZ::BI__builtin_s390_vfmaxdb: i = 2; l = 0; u = 15; break; |
3784 | case SystemZ::BI__builtin_s390_vsld: i = 2; l = 0; u = 7; break; |
3785 | case SystemZ::BI__builtin_s390_vsrd: i = 2; l = 0; u = 7; break; |
3786 | case SystemZ::BI__builtin_s390_vclfnhs: |
3787 | case SystemZ::BI__builtin_s390_vclfnls: |
3788 | case SystemZ::BI__builtin_s390_vcfn: |
3789 | case SystemZ::BI__builtin_s390_vcnf: i = 1; l = 0; u = 15; break; |
3790 | case SystemZ::BI__builtin_s390_vcrnfs: i = 2; l = 0; u = 15; break; |
3791 | } |
3792 | return SemaBuiltinConstantArgRange(TheCall, i, l, u); |
3793 | } |
3794 | |
3795 | |
3796 | |
3797 | |
3798 | static bool SemaBuiltinCpuSupports(Sema &S, const TargetInfo &TI, |
3799 | CallExpr *TheCall) { |
3800 | Expr *Arg = TheCall->getArg(0); |
3801 | |
3802 | |
3803 | if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts())) |
3804 | return S.Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal) |
3805 | << Arg->getSourceRange(); |
3806 | |
3807 | |
3808 | StringRef Feature = |
3809 | cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString(); |
3810 | if (!TI.validateCpuSupports(Feature)) |
3811 | return S.Diag(TheCall->getBeginLoc(), diag::err_invalid_cpu_supports) |
3812 | << Arg->getSourceRange(); |
3813 | return false; |
3814 | } |
3815 | |
3816 | |
3817 | |
3818 | |
3819 | static bool SemaBuiltinCpuIs(Sema &S, const TargetInfo &TI, CallExpr *TheCall) { |
3820 | Expr *Arg = TheCall->getArg(0); |
3821 | |
3822 | |
3823 | if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts())) |
3824 | return S.Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal) |
3825 | << Arg->getSourceRange(); |
3826 | |
3827 | |
3828 | StringRef Feature = |
3829 | cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString(); |
3830 | if (!TI.validateCpuIs(Feature)) |
3831 | return S.Diag(TheCall->getBeginLoc(), diag::err_invalid_cpu_is) |
3832 | << Arg->getSourceRange(); |
3833 | return false; |
3834 | } |
3835 | |
3836 | |
3837 | bool Sema::CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall) { |
3838 | |
3839 | bool HasRC = false; |
3840 | |
3841 | unsigned ArgNum = 0; |
3842 | switch (BuiltinID) { |
3843 | default: |
3844 | return false; |
3845 | case X86::BI__builtin_ia32_vcvttsd2si32: |
3846 | case X86::BI__builtin_ia32_vcvttsd2si64: |
3847 | case X86::BI__builtin_ia32_vcvttsd2usi32: |
3848 | case X86::BI__builtin_ia32_vcvttsd2usi64: |
3849 | case X86::BI__builtin_ia32_vcvttss2si32: |
3850 | case X86::BI__builtin_ia32_vcvttss2si64: |
3851 | case X86::BI__builtin_ia32_vcvttss2usi32: |
3852 | case X86::BI__builtin_ia32_vcvttss2usi64: |
3853 | ArgNum = 1; |
3854 | break; |
3855 | case X86::BI__builtin_ia32_maxpd512: |
3856 | case X86::BI__builtin_ia32_maxps512: |
3857 | case X86::BI__builtin_ia32_minpd512: |
3858 | case X86::BI__builtin_ia32_minps512: |
3859 | ArgNum = 2; |
3860 | break; |
3861 | case X86::BI__builtin_ia32_cvtps2pd512_mask: |
3862 | case X86::BI__builtin_ia32_cvttpd2dq512_mask: |
3863 | case X86::BI__builtin_ia32_cvttpd2qq512_mask: |
3864 | case X86::BI__builtin_ia32_cvttpd2udq512_mask: |
3865 | case X86::BI__builtin_ia32_cvttpd2uqq512_mask: |
3866 | case X86::BI__builtin_ia32_cvttps2dq512_mask: |
3867 | case X86::BI__builtin_ia32_cvttps2qq512_mask: |
3868 | case X86::BI__builtin_ia32_cvttps2udq512_mask: |
3869 | case X86::BI__builtin_ia32_cvttps2uqq512_mask: |
3870 | case X86::BI__builtin_ia32_exp2pd_mask: |
3871 | case X86::BI__builtin_ia32_exp2ps_mask: |
3872 | case X86::BI__builtin_ia32_getexppd512_mask: |
3873 | case X86::BI__builtin_ia32_getexpps512_mask: |
3874 | case X86::BI__builtin_ia32_rcp28pd_mask: |
3875 | case X86::BI__builtin_ia32_rcp28ps_mask: |
3876 | case X86::BI__builtin_ia32_rsqrt28pd_mask: |
3877 | case X86::BI__builtin_ia32_rsqrt28ps_mask: |
3878 | case X86::BI__builtin_ia32_vcomisd: |
3879 | case X86::BI__builtin_ia32_vcomiss: |
3880 | case X86::BI__builtin_ia32_vcvtph2ps512_mask: |
3881 | ArgNum = 3; |
3882 | break; |
3883 | case X86::BI__builtin_ia32_cmppd512_mask: |
3884 | case X86::BI__builtin_ia32_cmpps512_mask: |
3885 | case X86::BI__builtin_ia32_cmpsd_mask: |
3886 | case X86::BI__builtin_ia32_cmpss_mask: |
3887 | case X86::BI__builtin_ia32_cvtss2sd_round_mask: |
3888 | case X86::BI__builtin_ia32_getexpsd128_round_mask: |
3889 | case X86::BI__builtin_ia32_getexpss128_round_mask: |
3890 | case X86::BI__builtin_ia32_getmantpd512_mask: |
3891 | case X86::BI__builtin_ia32_getmantps512_mask: |
3892 | case X86::BI__builtin_ia32_maxsd_round_mask: |
3893 | case X86::BI__builtin_ia32_maxss_round_mask: |
3894 | case X86::BI__builtin_ia32_minsd_round_mask: |
3895 | case X86::BI__builtin_ia32_minss_round_mask: |
3896 | case X86::BI__builtin_ia32_rcp28sd_round_mask: |
3897 | case X86::BI__builtin_ia32_rcp28ss_round_mask: |
3898 | case X86::BI__builtin_ia32_reducepd512_mask: |
3899 | case X86::BI__builtin_ia32_reduceps512_mask: |
3900 | case X86::BI__builtin_ia32_rndscalepd_mask: |
3901 | case X86::BI__builtin_ia32_rndscaleps_mask: |
3902 | case X86::BI__builtin_ia32_rsqrt28sd_round_mask: |
3903 | case X86::BI__builtin_ia32_rsqrt28ss_round_mask: |
3904 | ArgNum = 4; |
3905 | break; |
3906 | case X86::BI__builtin_ia32_fixupimmpd512_mask: |
3907 | case X86::BI__builtin_ia32_fixupimmpd512_maskz: |
3908 | case X86::BI__builtin_ia32_fixupimmps512_mask: |
3909 | case X86::BI__builtin_ia32_fixupimmps512_maskz: |
3910 | case X86::BI__builtin_ia32_fixupimmsd_mask: |
3911 | case X86::BI__builtin_ia32_fixupimmsd_maskz: |
3912 | case X86::BI__builtin_ia32_fixupimmss_mask: |
3913 | case X86::BI__builtin_ia32_fixupimmss_maskz: |
3914 | case X86::BI__builtin_ia32_getmantsd_round_mask: |
3915 | case X86::BI__builtin_ia32_getmantss_round_mask: |
3916 | case X86::BI__builtin_ia32_rangepd512_mask: |
3917 | case X86::BI__builtin_ia32_rangeps512_mask: |
3918 | case X86::BI__builtin_ia32_rangesd128_round_mask: |
3919 | case X86::BI__builtin_ia32_rangess128_round_mask: |
3920 | case X86::BI__builtin_ia32_reducesd_mask: |
3921 | case X86::BI__builtin_ia32_reducess_mask: |
3922 | case X86::BI__builtin_ia32_rndscalesd_round_mask: |
3923 | case X86::BI__builtin_ia32_rndscaless_round_mask: |
3924 | ArgNum = 5; |
3925 | break; |
3926 | case X86::BI__builtin_ia32_vcvtsd2si64: |
3927 | case X86::BI__builtin_ia32_vcvtsd2si32: |
3928 | case X86::BI__builtin_ia32_vcvtsd2usi32: |
3929 | case X86::BI__builtin_ia32_vcvtsd2usi64: |
3930 | case X86::BI__builtin_ia32_vcvtss2si32: |
3931 | case X86::BI__builtin_ia32_vcvtss2si64: |
3932 | case X86::BI__builtin_ia32_vcvtss2usi32: |
3933 | case X86::BI__builtin_ia32_vcvtss2usi64: |
3934 | case X86::BI__builtin_ia32_sqrtpd512: |
3935 | case X86::BI__builtin_ia32_sqrtps512: |
3936 | ArgNum = 1; |
3937 | HasRC = true; |
3938 | break; |
3939 | case X86::BI__builtin_ia32_addpd512: |
3940 | case X86::BI__builtin_ia32_addps512: |
3941 | case X86::BI__builtin_ia32_divpd512: |
3942 | case X86::BI__builtin_ia32_divps512: |
3943 | case X86::BI__builtin_ia32_mulpd512: |
3944 | case X86::BI__builtin_ia32_mulps512: |
3945 | case X86::BI__builtin_ia32_subpd512: |
3946 | case X86::BI__builtin_ia32_subps512: |
3947 | case X86::BI__builtin_ia32_cvtsi2sd64: |
3948 | case X86::BI__builtin_ia32_cvtsi2ss32: |
3949 | case X86::BI__builtin_ia32_cvtsi2ss64: |
3950 | case X86::BI__builtin_ia32_cvtusi2sd64: |
3951 | case X86::BI__builtin_ia32_cvtusi2ss32: |
3952 | case X86::BI__builtin_ia32_cvtusi2ss64: |
3953 | ArgNum = 2; |
3954 | HasRC = true; |
3955 | break; |
3956 | case X86::BI__builtin_ia32_cvtdq2ps512_mask: |
3957 | case X86::BI__builtin_ia32_cvtudq2ps512_mask: |
3958 | case X86::BI__builtin_ia32_cvtpd2ps512_mask: |
3959 | case X86::BI__builtin_ia32_cvtpd2dq512_mask: |
3960 | case X86::BI__builtin_ia32_cvtpd2qq512_mask: |
3961 | case X86::BI__builtin_ia32_cvtpd2udq512_mask: |
3962 | case X86::BI__builtin_ia32_cvtpd2uqq512_mask: |
3963 | case X86::BI__builtin_ia32_cvtps2dq512_mask: |
3964 | case X86::BI__builtin_ia32_cvtps2qq512_mask: |
3965 | case X86::BI__builtin_ia32_cvtps2udq512_mask: |
3966 | case X86::BI__builtin_ia32_cvtps2uqq512_mask: |
3967 | case X86::BI__builtin_ia32_cvtqq2pd512_mask: |
3968 | case X86::BI__builtin_ia32_cvtqq2ps512_mask: |
3969 | case X86::BI__builtin_ia32_cvtuqq2pd512_mask: |
3970 | case X86::BI__builtin_ia32_cvtuqq2ps512_mask: |
3971 | ArgNum = 3; |
3972 | HasRC = true; |
3973 | break; |
3974 | case X86::BI__builtin_ia32_addss_round_mask: |
3975 | case X86::BI__builtin_ia32_addsd_round_mask: |
3976 | case X86::BI__builtin_ia32_divss_round_mask: |
3977 | case X86::BI__builtin_ia32_divsd_round_mask: |
3978 | case X86::BI__builtin_ia32_mulss_round_mask: |
3979 | case X86::BI__builtin_ia32_mulsd_round_mask: |
3980 | case X86::BI__builtin_ia32_subss_round_mask: |
3981 | case X86::BI__builtin_ia32_subsd_round_mask: |
3982 | case X86::BI__builtin_ia32_scalefpd512_mask: |
3983 | case X86::BI__builtin_ia32_scalefps512_mask: |
3984 | case X86::BI__builtin_ia32_scalefsd_round_mask: |
3985 | case X86::BI__builtin_ia32_scalefss_round_mask: |
3986 | case X86::BI__builtin_ia32_cvtsd2ss_round_mask: |
3987 | case X86::BI__builtin_ia32_sqrtsd_round_mask: |
3988 | case X86::BI__builtin_ia32_sqrtss_round_mask: |
3989 | case X86::BI__builtin_ia32_vfmaddsd3_mask: |
3990 | case X86::BI__builtin_ia32_vfmaddsd3_maskz: |
3991 | case X86::BI__builtin_ia32_vfmaddsd3_mask3: |
3992 | case X86::BI__builtin_ia32_vfmaddss3_mask: |
3993 | case X86::BI__builtin_ia32_vfmaddss3_maskz: |
3994 | case X86::BI__builtin_ia32_vfmaddss3_mask3: |
3995 | case X86::BI__builtin_ia32_vfmaddpd512_mask: |
3996 | case X86::BI__builtin_ia32_vfmaddpd512_maskz: |
3997 | case X86::BI__builtin_ia32_vfmaddpd512_mask3: |
3998 | case X86::BI__builtin_ia32_vfmsubpd512_mask3: |
3999 | case X86::BI__builtin_ia32_vfmaddps512_mask: |
4000 | case X86::BI__builtin_ia32_vfmaddps512_maskz: |
4001 | case X86::BI__builtin_ia32_vfmaddps512_mask3: |
4002 | case X86::BI__builtin_ia32_vfmsubps512_mask3: |
4003 | case X86::BI__builtin_ia32_vfmaddsubpd512_mask: |
4004 | case X86::BI__builtin_ia32_vfmaddsubpd512_maskz: |
4005 | case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: |
4006 | case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: |
4007 | case X86::BI__builtin_ia32_vfmaddsubps512_mask: |
4008 | case X86::BI__builtin_ia32_vfmaddsubps512_maskz: |
4009 | case X86::BI__builtin_ia32_vfmaddsubps512_mask3: |
4010 | case X86::BI__builtin_ia32_vfmsubaddps512_mask3: |
4011 | ArgNum = 4; |
4012 | HasRC = true; |
4013 | break; |
4014 | } |
4015 | |
4016 | llvm::APSInt Result; |
4017 | |
4018 | |
4019 | Expr *Arg = TheCall->getArg(ArgNum); |
4020 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
4021 | return false; |
4022 | |
4023 | |
4024 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
4025 | return true; |
4026 | |
4027 | |
4028 | |
4029 | |
4030 | |
4031 | if (Result == 4 || |
4032 | Result == 8 || |
4033 | (!HasRC && Result == 12) || |
4034 | (HasRC && Result.getZExtValue() >= 8 && Result.getZExtValue() <= 11)) |
4035 | return false; |
4036 | |
4037 | return Diag(TheCall->getBeginLoc(), diag::err_x86_builtin_invalid_rounding) |
4038 | << Arg->getSourceRange(); |
4039 | } |
4040 | |
4041 | |
4042 | bool Sema::CheckX86BuiltinGatherScatterScale(unsigned BuiltinID, |
4043 | CallExpr *TheCall) { |
4044 | unsigned ArgNum = 0; |
4045 | switch (BuiltinID) { |
4046 | default: |
4047 | return false; |
4048 | case X86::BI__builtin_ia32_gatherpfdpd: |
4049 | case X86::BI__builtin_ia32_gatherpfdps: |
4050 | case X86::BI__builtin_ia32_gatherpfqpd: |
4051 | case X86::BI__builtin_ia32_gatherpfqps: |
4052 | case X86::BI__builtin_ia32_scatterpfdpd: |
4053 | case X86::BI__builtin_ia32_scatterpfdps: |
4054 | case X86::BI__builtin_ia32_scatterpfqpd: |
4055 | case X86::BI__builtin_ia32_scatterpfqps: |
4056 | ArgNum = 3; |
4057 | break; |
4058 | case X86::BI__builtin_ia32_gatherd_pd: |
4059 | case X86::BI__builtin_ia32_gatherd_pd256: |
4060 | case X86::BI__builtin_ia32_gatherq_pd: |
4061 | case X86::BI__builtin_ia32_gatherq_pd256: |
4062 | case X86::BI__builtin_ia32_gatherd_ps: |
4063 | case X86::BI__builtin_ia32_gatherd_ps256: |
4064 | case X86::BI__builtin_ia32_gatherq_ps: |
4065 | case X86::BI__builtin_ia32_gatherq_ps256: |
4066 | case X86::BI__builtin_ia32_gatherd_q: |
4067 | case X86::BI__builtin_ia32_gatherd_q256: |
4068 | case X86::BI__builtin_ia32_gatherq_q: |
4069 | case X86::BI__builtin_ia32_gatherq_q256: |
4070 | case X86::BI__builtin_ia32_gatherd_d: |
4071 | case X86::BI__builtin_ia32_gatherd_d256: |
4072 | case X86::BI__builtin_ia32_gatherq_d: |
4073 | case X86::BI__builtin_ia32_gatherq_d256: |
4074 | case X86::BI__builtin_ia32_gather3div2df: |
4075 | case X86::BI__builtin_ia32_gather3div2di: |
4076 | case X86::BI__builtin_ia32_gather3div4df: |
4077 | case X86::BI__builtin_ia32_gather3div4di: |
4078 | case X86::BI__builtin_ia32_gather3div4sf: |
4079 | case X86::BI__builtin_ia32_gather3div4si: |
4080 | case X86::BI__builtin_ia32_gather3div8sf: |
4081 | case X86::BI__builtin_ia32_gather3div8si: |
4082 | case X86::BI__builtin_ia32_gather3siv2df: |
4083 | case X86::BI__builtin_ia32_gather3siv2di: |
4084 | case X86::BI__builtin_ia32_gather3siv4df: |
4085 | case X86::BI__builtin_ia32_gather3siv4di: |
4086 | case X86::BI__builtin_ia32_gather3siv4sf: |
4087 | case X86::BI__builtin_ia32_gather3siv4si: |
4088 | case X86::BI__builtin_ia32_gather3siv8sf: |
4089 | case X86::BI__builtin_ia32_gather3siv8si: |
4090 | case X86::BI__builtin_ia32_gathersiv8df: |
4091 | case X86::BI__builtin_ia32_gathersiv16sf: |
4092 | case X86::BI__builtin_ia32_gatherdiv8df: |
4093 | case X86::BI__builtin_ia32_gatherdiv16sf: |
4094 | case X86::BI__builtin_ia32_gathersiv8di: |
4095 | case X86::BI__builtin_ia32_gathersiv16si: |
4096 | case X86::BI__builtin_ia32_gatherdiv8di: |
4097 | case X86::BI__builtin_ia32_gatherdiv16si: |
4098 | case X86::BI__builtin_ia32_scatterdiv2df: |
4099 | case X86::BI__builtin_ia32_scatterdiv2di: |
4100 | case X86::BI__builtin_ia32_scatterdiv4df: |
4101 | case X86::BI__builtin_ia32_scatterdiv4di: |
4102 | case X86::BI__builtin_ia32_scatterdiv4sf: |
4103 | case X86::BI__builtin_ia32_scatterdiv4si: |
4104 | case X86::BI__builtin_ia32_scatterdiv8sf: |
4105 | case X86::BI__builtin_ia32_scatterdiv8si: |
4106 | case X86::BI__builtin_ia32_scattersiv2df: |
4107 | case X86::BI__builtin_ia32_scattersiv2di: |
4108 | case X86::BI__builtin_ia32_scattersiv4df: |
4109 | case X86::BI__builtin_ia32_scattersiv4di: |
4110 | case X86::BI__builtin_ia32_scattersiv4sf: |
4111 | case X86::BI__builtin_ia32_scattersiv4si: |
4112 | case X86::BI__builtin_ia32_scattersiv8sf: |
4113 | case X86::BI__builtin_ia32_scattersiv8si: |
4114 | case X86::BI__builtin_ia32_scattersiv8df: |
4115 | case X86::BI__builtin_ia32_scattersiv16sf: |
4116 | case X86::BI__builtin_ia32_scatterdiv8df: |
4117 | case X86::BI__builtin_ia32_scatterdiv16sf: |
4118 | case X86::BI__builtin_ia32_scattersiv8di: |
4119 | case X86::BI__builtin_ia32_scattersiv16si: |
4120 | case X86::BI__builtin_ia32_scatterdiv8di: |
4121 | case X86::BI__builtin_ia32_scatterdiv16si: |
4122 | ArgNum = 4; |
4123 | break; |
4124 | } |
4125 | |
4126 | llvm::APSInt Result; |
4127 | |
4128 | |
4129 | Expr *Arg = TheCall->getArg(ArgNum); |
4130 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
4131 | return false; |
4132 | |
4133 | |
4134 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
4135 | return true; |
4136 | |
4137 | if (Result == 1 || Result == 2 || Result == 4 || Result == 8) |
4138 | return false; |
4139 | |
4140 | return Diag(TheCall->getBeginLoc(), diag::err_x86_builtin_invalid_scale) |
4141 | << Arg->getSourceRange(); |
4142 | } |
4143 | |
4144 | enum { TileRegLow = 0, TileRegHigh = 7 }; |
4145 | |
4146 | bool Sema::CheckX86BuiltinTileArgumentsRange(CallExpr *TheCall, |
4147 | ArrayRef<int> ArgNums) { |
4148 | for (int ArgNum : ArgNums) { |
4149 | if (SemaBuiltinConstantArgRange(TheCall, ArgNum, TileRegLow, TileRegHigh)) |
4150 | return true; |
4151 | } |
4152 | return false; |
4153 | } |
4154 | |
4155 | bool Sema::CheckX86BuiltinTileDuplicate(CallExpr *TheCall, |
4156 | ArrayRef<int> ArgNums) { |
4157 | |
4158 | |
4159 | std::bitset<TileRegHigh + 1> ArgValues; |
4160 | for (int ArgNum : ArgNums) { |
4161 | Expr *Arg = TheCall->getArg(ArgNum); |
4162 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
4163 | continue; |
4164 | |
4165 | llvm::APSInt Result; |
4166 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
4167 | return true; |
4168 | int ArgExtValue = Result.getExtValue(); |
4169 | assert((ArgExtValue >= TileRegLow || ArgExtValue <= TileRegHigh) && |
4170 | "Incorrect tile register num."); |
4171 | if (ArgValues.test(ArgExtValue)) |
4172 | return Diag(TheCall->getBeginLoc(), |
4173 | diag::err_x86_builtin_tile_arg_duplicate) |
4174 | << TheCall->getArg(ArgNum)->getSourceRange(); |
4175 | ArgValues.set(ArgExtValue); |
4176 | } |
4177 | return false; |
4178 | } |
4179 | |
4180 | bool Sema::CheckX86BuiltinTileRangeAndDuplicate(CallExpr *TheCall, |
4181 | ArrayRef<int> ArgNums) { |
4182 | return CheckX86BuiltinTileArgumentsRange(TheCall, ArgNums) || |
4183 | CheckX86BuiltinTileDuplicate(TheCall, ArgNums); |
4184 | } |
4185 | |
4186 | bool Sema::CheckX86BuiltinTileArguments(unsigned BuiltinID, CallExpr *TheCall) { |
4187 | switch (BuiltinID) { |
4188 | default: |
4189 | return false; |
4190 | case X86::BI__builtin_ia32_tileloadd64: |
4191 | case X86::BI__builtin_ia32_tileloaddt164: |
4192 | case X86::BI__builtin_ia32_tilestored64: |
4193 | case X86::BI__builtin_ia32_tilezero: |
4194 | return CheckX86BuiltinTileArgumentsRange(TheCall, 0); |
4195 | case X86::BI__builtin_ia32_tdpbssd: |
4196 | case X86::BI__builtin_ia32_tdpbsud: |
4197 | case X86::BI__builtin_ia32_tdpbusd: |
4198 | case X86::BI__builtin_ia32_tdpbuud: |
4199 | case X86::BI__builtin_ia32_tdpbf16ps: |
4200 | return CheckX86BuiltinTileRangeAndDuplicate(TheCall, {0, 1, 2}); |
4201 | } |
4202 | } |
4203 | static bool isX86_32Builtin(unsigned BuiltinID) { |
4204 | |
4205 | switch (BuiltinID) { |
4206 | case X86::BI__builtin_ia32_readeflags_u32: |
4207 | case X86::BI__builtin_ia32_writeeflags_u32: |
4208 | return true; |
4209 | } |
4210 | |
4211 | return false; |
4212 | } |
4213 | |
4214 | bool Sema::CheckX86BuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID, |
4215 | CallExpr *TheCall) { |
4216 | if (BuiltinID == X86::BI__builtin_cpu_supports) |
4217 | return SemaBuiltinCpuSupports(*this, TI, TheCall); |
4218 | |
4219 | if (BuiltinID == X86::BI__builtin_cpu_is) |
4220 | return SemaBuiltinCpuIs(*this, TI, TheCall); |
4221 | |
4222 | |
4223 | const llvm::Triple &TT = TI.getTriple(); |
4224 | if (TT.getArch() != llvm::Triple::x86 && isX86_32Builtin(BuiltinID)) |
4225 | return Diag(TheCall->getCallee()->getBeginLoc(), |
4226 | diag::err_32_bit_builtin_64_bit_tgt); |
4227 | |
4228 | |
4229 | if (CheckX86BuiltinRoundingOrSAE(BuiltinID, TheCall)) |
4230 | return true; |
4231 | |
4232 | |
4233 | if (CheckX86BuiltinGatherScatterScale(BuiltinID, TheCall)) |
4234 | return true; |
4235 | |
4236 | |
4237 | if (CheckX86BuiltinTileArguments(BuiltinID, TheCall)) |
4238 | return true; |
4239 | |
4240 | |
4241 | |
4242 | int i = 0, l = 0, u = 0; |
4243 | switch (BuiltinID) { |
4244 | default: |
4245 | return false; |
4246 | case X86::BI__builtin_ia32_vec_ext_v2si: |
4247 | case X86::BI__builtin_ia32_vec_ext_v2di: |
4248 | case X86::BI__builtin_ia32_vextractf128_pd256: |
4249 | case X86::BI__builtin_ia32_vextractf128_ps256: |
4250 | case X86::BI__builtin_ia32_vextractf128_si256: |
4251 | case X86::BI__builtin_ia32_extract128i256: |
4252 | case X86::BI__builtin_ia32_extractf64x4_mask: |
4253 | case X86::BI__builtin_ia32_extracti64x4_mask: |
4254 | case X86::BI__builtin_ia32_extractf32x8_mask: |
4255 | case X86::BI__builtin_ia32_extracti32x8_mask: |
4256 | case X86::BI__builtin_ia32_extractf64x2_256_mask: |
4257 | case X86::BI__builtin_ia32_extracti64x2_256_mask: |
4258 | case X86::BI__builtin_ia32_extractf32x4_256_mask: |
4259 | case X86::BI__builtin_ia32_extracti32x4_256_mask: |
4260 | i = 1; l = 0; u = 1; |
4261 | break; |
4262 | case X86::BI__builtin_ia32_vec_set_v2di: |
4263 | case X86::BI__builtin_ia32_vinsertf128_pd256: |
4264 | case X86::BI__builtin_ia32_vinsertf128_ps256: |
4265 | case X86::BI__builtin_ia32_vinsertf128_si256: |
4266 | case X86::BI__builtin_ia32_insert128i256: |
4267 | case X86::BI__builtin_ia32_insertf32x8: |
4268 | case X86::BI__builtin_ia32_inserti32x8: |
4269 | case X86::BI__builtin_ia32_insertf64x4: |
4270 | case X86::BI__builtin_ia32_inserti64x4: |
4271 | case X86::BI__builtin_ia32_insertf64x2_256: |
4272 | case X86::BI__builtin_ia32_inserti64x2_256: |
4273 | case X86::BI__builtin_ia32_insertf32x4_256: |
4274 | case X86::BI__builtin_ia32_inserti32x4_256: |
4275 | i = 2; l = 0; u = 1; |
4276 | break; |
4277 | case X86::BI__builtin_ia32_vpermilpd: |
4278 | case X86::BI__builtin_ia32_vec_ext_v4hi: |
4279 | case X86::BI__builtin_ia32_vec_ext_v4si: |
4280 | case X86::BI__builtin_ia32_vec_ext_v4sf: |
4281 | case X86::BI__builtin_ia32_vec_ext_v4di: |
4282 | case X86::BI__builtin_ia32_extractf32x4_mask: |
4283 | case X86::BI__builtin_ia32_extracti32x4_mask: |
4284 | case X86::BI__builtin_ia32_extractf64x2_512_mask: |
4285 | case X86::BI__builtin_ia32_extracti64x2_512_mask: |
4286 | i = 1; l = 0; u = 3; |
4287 | break; |
4288 | case X86::BI_mm_prefetch: |
4289 | case X86::BI__builtin_ia32_vec_ext_v8hi: |
4290 | case X86::BI__builtin_ia32_vec_ext_v8si: |
4291 | i = 1; l = 0; u = 7; |
4292 | break; |
4293 | case X86::BI__builtin_ia32_sha1rnds4: |
4294 | case X86::BI__builtin_ia32_blendpd: |
4295 | case X86::BI__builtin_ia32_shufpd: |
4296 | case X86::BI__builtin_ia32_vec_set_v4hi: |
4297 | case X86::BI__builtin_ia32_vec_set_v4si: |
4298 | case X86::BI__builtin_ia32_vec_set_v4di: |
4299 | case X86::BI__builtin_ia32_shuf_f32x4_256: |
4300 | case X86::BI__builtin_ia32_shuf_f64x2_256: |
4301 | case X86::BI__builtin_ia32_shuf_i32x4_256: |
4302 | case X86::BI__builtin_ia32_shuf_i64x2_256: |
4303 | case X86::BI__builtin_ia32_insertf64x2_512: |
4304 | case X86::BI__builtin_ia32_inserti64x2_512: |
4305 | case X86::BI__builtin_ia32_insertf32x4: |
4306 | case X86::BI__builtin_ia32_inserti32x4: |
4307 | i = 2; l = 0; u = 3; |
4308 | break; |
4309 | case X86::BI__builtin_ia32_vpermil2pd: |
4310 | case X86::BI__builtin_ia32_vpermil2pd256: |
4311 | case X86::BI__builtin_ia32_vpermil2ps: |
4312 | case X86::BI__builtin_ia32_vpermil2ps256: |
4313 | i = 3; l = 0; u = 3; |
4314 | break; |
4315 | case X86::BI__builtin_ia32_cmpb128_mask: |
4316 | case X86::BI__builtin_ia32_cmpw128_mask: |
4317 | case X86::BI__builtin_ia32_cmpd128_mask: |
4318 | case X86::BI__builtin_ia32_cmpq128_mask: |
4319 | case X86::BI__builtin_ia32_cmpb256_mask: |
4320 | case X86::BI__builtin_ia32_cmpw256_mask: |
4321 | case X86::BI__builtin_ia32_cmpd256_mask: |
4322 | case X86::BI__builtin_ia32_cmpq256_mask: |
4323 | case X86::BI__builtin_ia32_cmpb512_mask: |
4324 | case X86::BI__builtin_ia32_cmpw512_mask: |
4325 | case X86::BI__builtin_ia32_cmpd512_mask: |
4326 | case X86::BI__builtin_ia32_cmpq512_mask: |
4327 | case X86::BI__builtin_ia32_ucmpb128_mask: |
4328 | case X86::BI__builtin_ia32_ucmpw128_mask: |
4329 | case X86::BI__builtin_ia32_ucmpd128_mask: |
4330 | case X86::BI__builtin_ia32_ucmpq128_mask: |
4331 | case X86::BI__builtin_ia32_ucmpb256_mask: |
4332 | case X86::BI__builtin_ia32_ucmpw256_mask: |
4333 | case X86::BI__builtin_ia32_ucmpd256_mask: |
4334 | case X86::BI__builtin_ia32_ucmpq256_mask: |
4335 | case X86::BI__builtin_ia32_ucmpb512_mask: |
4336 | case X86::BI__builtin_ia32_ucmpw512_mask: |
4337 | case X86::BI__builtin_ia32_ucmpd512_mask: |
4338 | case X86::BI__builtin_ia32_ucmpq512_mask: |
4339 | case X86::BI__builtin_ia32_vpcomub: |
4340 | case X86::BI__builtin_ia32_vpcomuw: |
4341 | case X86::BI__builtin_ia32_vpcomud: |
4342 | case X86::BI__builtin_ia32_vpcomuq: |
4343 | case X86::BI__builtin_ia32_vpcomb: |
4344 | case X86::BI__builtin_ia32_vpcomw: |
4345 | case X86::BI__builtin_ia32_vpcomd: |
4346 | case X86::BI__builtin_ia32_vpcomq: |
4347 | case X86::BI__builtin_ia32_vec_set_v8hi: |
4348 | case X86::BI__builtin_ia32_vec_set_v8si: |
4349 | i = 2; l = 0; u = 7; |
4350 | break; |
4351 | case X86::BI__builtin_ia32_vpermilpd256: |
4352 | case X86::BI__builtin_ia32_roundps: |
4353 | case X86::BI__builtin_ia32_roundpd: |
4354 | case X86::BI__builtin_ia32_roundps256: |
4355 | case X86::BI__builtin_ia32_roundpd256: |
4356 | case X86::BI__builtin_ia32_getmantpd128_mask: |
4357 | case X86::BI__builtin_ia32_getmantpd256_mask: |
4358 | case X86::BI__builtin_ia32_getmantps128_mask: |
4359 | case X86::BI__builtin_ia32_getmantps256_mask: |
4360 | case X86::BI__builtin_ia32_getmantpd512_mask: |
4361 | case X86::BI__builtin_ia32_getmantps512_mask: |
4362 | case X86::BI__builtin_ia32_vec_ext_v16qi: |
4363 | case X86::BI__builtin_ia32_vec_ext_v16hi: |
4364 | i = 1; l = 0; u = 15; |
4365 | break; |
4366 | case X86::BI__builtin_ia32_pblendd128: |
4367 | case X86::BI__builtin_ia32_blendps: |
4368 | case X86::BI__builtin_ia32_blendpd256: |
4369 | case X86::BI__builtin_ia32_shufpd256: |
4370 | case X86::BI__builtin_ia32_roundss: |
4371 | case X86::BI__builtin_ia32_roundsd: |
4372 | case X86::BI__builtin_ia32_rangepd128_mask: |
4373 | case X86::BI__builtin_ia32_rangepd256_mask: |
4374 | case X86::BI__builtin_ia32_rangepd512_mask: |
4375 | case X86::BI__builtin_ia32_rangeps128_mask: |
4376 | case X86::BI__builtin_ia32_rangeps256_mask: |
4377 | case X86::BI__builtin_ia32_rangeps512_mask: |
4378 | case X86::BI__builtin_ia32_getmantsd_round_mask: |
4379 | case X86::BI__builtin_ia32_getmantss_round_mask: |
4380 | case X86::BI__builtin_ia32_vec_set_v16qi: |
4381 | case X86::BI__builtin_ia32_vec_set_v16hi: |
4382 | i = 2; l = 0; u = 15; |
4383 | break; |
4384 | case X86::BI__builtin_ia32_vec_ext_v32qi: |
4385 | i = 1; l = 0; u = 31; |
4386 | break; |
4387 | case X86::BI__builtin_ia32_cmpps: |
4388 | case X86::BI__builtin_ia32_cmpss: |
4389 | case X86::BI__builtin_ia32_cmppd: |
4390 | case X86::BI__builtin_ia32_cmpsd: |
4391 | case X86::BI__builtin_ia32_cmpps256: |
4392 | case X86::BI__builtin_ia32_cmppd256: |
4393 | case X86::BI__builtin_ia32_cmpps128_mask: |
4394 | case X86::BI__builtin_ia32_cmppd128_mask: |
4395 | case X86::BI__builtin_ia32_cmpps256_mask: |
4396 | case X86::BI__builtin_ia32_cmppd256_mask: |
4397 | case X86::BI__builtin_ia32_cmpps512_mask: |
4398 | case X86::BI__builtin_ia32_cmppd512_mask: |
4399 | case X86::BI__builtin_ia32_cmpsd_mask: |
4400 | case X86::BI__builtin_ia32_cmpss_mask: |
4401 | case X86::BI__builtin_ia32_vec_set_v32qi: |
4402 | i = 2; l = 0; u = 31; |
4403 | break; |
4404 | case X86::BI__builtin_ia32_permdf256: |
4405 | case X86::BI__builtin_ia32_permdi256: |
4406 | case X86::BI__builtin_ia32_permdf512: |
4407 | case X86::BI__builtin_ia32_permdi512: |
4408 | case X86::BI__builtin_ia32_vpermilps: |
4409 | case X86::BI__builtin_ia32_vpermilps256: |
4410 | case X86::BI__builtin_ia32_vpermilpd512: |
4411 | case X86::BI__builtin_ia32_vpermilps512: |
4412 | case X86::BI__builtin_ia32_pshufd: |
4413 | case X86::BI__builtin_ia32_pshufd256: |
4414 | case X86::BI__builtin_ia32_pshufd512: |
4415 | case X86::BI__builtin_ia32_pshufhw: |
4416 | case X86::BI__builtin_ia32_pshufhw256: |
4417 | case X86::BI__builtin_ia32_pshufhw512: |
4418 | case X86::BI__builtin_ia32_pshuflw: |
4419 | case X86::BI__builtin_ia32_pshuflw256: |
4420 | case X86::BI__builtin_ia32_pshuflw512: |
4421 | case X86::BI__builtin_ia32_vcvtps2ph: |
4422 | case X86::BI__builtin_ia32_vcvtps2ph_mask: |
4423 | case X86::BI__builtin_ia32_vcvtps2ph256: |
4424 | case X86::BI__builtin_ia32_vcvtps2ph256_mask: |
4425 | case X86::BI__builtin_ia32_vcvtps2ph512_mask: |
4426 | case X86::BI__builtin_ia32_rndscaleps_128_mask: |
4427 | case X86::BI__builtin_ia32_rndscalepd_128_mask: |
4428 | case X86::BI__builtin_ia32_rndscaleps_256_mask: |
4429 | case X86::BI__builtin_ia32_rndscalepd_256_mask: |
4430 | case X86::BI__builtin_ia32_rndscaleps_mask: |
4431 | case X86::BI__builtin_ia32_rndscalepd_mask: |
4432 | case X86::BI__builtin_ia32_reducepd128_mask: |
4433 | case X86::BI__builtin_ia32_reducepd256_mask: |
4434 | case X86::BI__builtin_ia32_reducepd512_mask: |
4435 | case X86::BI__builtin_ia32_reduceps128_mask: |
4436 | case X86::BI__builtin_ia32_reduceps256_mask: |
4437 | case X86::BI__builtin_ia32_reduceps512_mask: |
4438 | case X86::BI__builtin_ia32_prold512: |
4439 | case X86::BI__builtin_ia32_prolq512: |
4440 | case X86::BI__builtin_ia32_prold128: |
4441 | case X86::BI__builtin_ia32_prold256: |
4442 | case X86::BI__builtin_ia32_prolq128: |
4443 | case X86::BI__builtin_ia32_prolq256: |
4444 | case X86::BI__builtin_ia32_prord512: |
4445 | case X86::BI__builtin_ia32_prorq512: |
4446 | case X86::BI__builtin_ia32_prord128: |
4447 | case X86::BI__builtin_ia32_prord256: |
4448 | case X86::BI__builtin_ia32_prorq128: |
4449 | case X86::BI__builtin_ia32_prorq256: |
4450 | case X86::BI__builtin_ia32_fpclasspd128_mask: |
4451 | case X86::BI__builtin_ia32_fpclasspd256_mask: |
4452 | case X86::BI__builtin_ia32_fpclassps128_mask: |
4453 | case X86::BI__builtin_ia32_fpclassps256_mask: |
4454 | case X86::BI__builtin_ia32_fpclassps512_mask: |
4455 | case X86::BI__builtin_ia32_fpclasspd512_mask: |
4456 | case X86::BI__builtin_ia32_fpclasssd_mask: |
4457 | case X86::BI__builtin_ia32_fpclassss_mask: |
4458 | case X86::BI__builtin_ia32_pslldqi128_byteshift: |
4459 | case X86::BI__builtin_ia32_pslldqi256_byteshift: |
4460 | case X86::BI__builtin_ia32_pslldqi512_byteshift: |
4461 | case X86::BI__builtin_ia32_psrldqi128_byteshift: |
4462 | case X86::BI__builtin_ia32_psrldqi256_byteshift: |
4463 | case X86::BI__builtin_ia32_psrldqi512_byteshift: |
4464 | case X86::BI__builtin_ia32_kshiftliqi: |
4465 | case X86::BI__builtin_ia32_kshiftlihi: |
4466 | case X86::BI__builtin_ia32_kshiftlisi: |
4467 | case X86::BI__builtin_ia32_kshiftlidi: |
4468 | case X86::BI__builtin_ia32_kshiftriqi: |
4469 | case X86::BI__builtin_ia32_kshiftrihi: |
4470 | case X86::BI__builtin_ia32_kshiftrisi: |
4471 | case X86::BI__builtin_ia32_kshiftridi: |
4472 | i = 1; l = 0; u = 255; |
4473 | break; |
4474 | case X86::BI__builtin_ia32_vperm2f128_pd256: |
4475 | case X86::BI__builtin_ia32_vperm2f128_ps256: |
4476 | case X86::BI__builtin_ia32_vperm2f128_si256: |
4477 | case X86::BI__builtin_ia32_permti256: |
4478 | case X86::BI__builtin_ia32_pblendw128: |
4479 | case X86::BI__builtin_ia32_pblendw256: |
4480 | case X86::BI__builtin_ia32_blendps256: |
4481 | case X86::BI__builtin_ia32_pblendd256: |
4482 | case X86::BI__builtin_ia32_palignr128: |
4483 | case X86::BI__builtin_ia32_palignr256: |
4484 | case X86::BI__builtin_ia32_palignr512: |
4485 | case X86::BI__builtin_ia32_alignq512: |
4486 | case X86::BI__builtin_ia32_alignd512: |
4487 | case X86::BI__builtin_ia32_alignd128: |
4488 | case X86::BI__builtin_ia32_alignd256: |
4489 | case X86::BI__builtin_ia32_alignq128: |
4490 | case X86::BI__builtin_ia32_alignq256: |
4491 | case X86::BI__builtin_ia32_vcomisd: |
4492 | case X86::BI__builtin_ia32_vcomiss: |
4493 | case X86::BI__builtin_ia32_shuf_f32x4: |
4494 | case X86::BI__builtin_ia32_shuf_f64x2: |
4495 | case X86::BI__builtin_ia32_shuf_i32x4: |
4496 | case X86::BI__builtin_ia32_shuf_i64x2: |
4497 | case X86::BI__builtin_ia32_shufpd512: |
4498 | case X86::BI__builtin_ia32_shufps: |
4499 | case X86::BI__builtin_ia32_shufps256: |
4500 | case X86::BI__builtin_ia32_shufps512: |
4501 | case X86::BI__builtin_ia32_dbpsadbw128: |
4502 | case X86::BI__builtin_ia32_dbpsadbw256: |
4503 | case X86::BI__builtin_ia32_dbpsadbw512: |
4504 | case X86::BI__builtin_ia32_vpshldd128: |
4505 | case X86::BI__builtin_ia32_vpshldd256: |
4506 | case X86::BI__builtin_ia32_vpshldd512: |
4507 | case X86::BI__builtin_ia32_vpshldq128: |
4508 | case X86::BI__builtin_ia32_vpshldq256: |
4509 | case X86::BI__builtin_ia32_vpshldq512: |
4510 | case X86::BI__builtin_ia32_vpshldw128: |
4511 | case X86::BI__builtin_ia32_vpshldw256: |
4512 | case X86::BI__builtin_ia32_vpshldw512: |
4513 | case X86::BI__builtin_ia32_vpshrdd128: |
4514 | case X86::BI__builtin_ia32_vpshrdd256: |
4515 | case X86::BI__builtin_ia32_vpshrdd512: |
4516 | case X86::BI__builtin_ia32_vpshrdq128: |
4517 | case X86::BI__builtin_ia32_vpshrdq256: |
4518 | case X86::BI__builtin_ia32_vpshrdq512: |
4519 | case X86::BI__builtin_ia32_vpshrdw128: |
4520 | case X86::BI__builtin_ia32_vpshrdw256: |
4521 | case X86::BI__builtin_ia32_vpshrdw512: |
4522 | i = 2; l = 0; u = 255; |
4523 | break; |
4524 | case X86::BI__builtin_ia32_fixupimmpd512_mask: |
4525 | case X86::BI__builtin_ia32_fixupimmpd512_maskz: |
4526 | case X86::BI__builtin_ia32_fixupimmps512_mask: |
4527 | case X86::BI__builtin_ia32_fixupimmps512_maskz: |
4528 | case X86::BI__builtin_ia32_fixupimmsd_mask: |
4529 | case X86::BI__builtin_ia32_fixupimmsd_maskz: |
4530 | case X86::BI__builtin_ia32_fixupimmss_mask: |
4531 | case X86::BI__builtin_ia32_fixupimmss_maskz: |
4532 | case X86::BI__builtin_ia32_fixupimmpd128_mask: |
4533 | case X86::BI__builtin_ia32_fixupimmpd128_maskz: |
4534 | case X86::BI__builtin_ia32_fixupimmpd256_mask: |
4535 | case X86::BI__builtin_ia32_fixupimmpd256_maskz: |
4536 | case X86::BI__builtin_ia32_fixupimmps128_mask: |
4537 | case X86::BI__builtin_ia32_fixupimmps128_maskz: |
4538 | case X86::BI__builtin_ia32_fixupimmps256_mask: |
4539 | case X86::BI__builtin_ia32_fixupimmps256_maskz: |
4540 | case X86::BI__builtin_ia32_pternlogd512_mask: |
4541 | case X86::BI__builtin_ia32_pternlogd512_maskz: |
4542 | case X86::BI__builtin_ia32_pternlogq512_mask: |
4543 | case X86::BI__builtin_ia32_pternlogq512_maskz: |
4544 | case X86::BI__builtin_ia32_pternlogd128_mask: |
4545 | case X86::BI__builtin_ia32_pternlogd128_maskz: |
4546 | case X86::BI__builtin_ia32_pternlogd256_mask: |
4547 | case X86::BI__builtin_ia32_pternlogd256_maskz: |
4548 | case X86::BI__builtin_ia32_pternlogq128_mask: |
4549 | case X86::BI__builtin_ia32_pternlogq128_maskz: |
4550 | case X86::BI__builtin_ia32_pternlogq256_mask: |
4551 | case X86::BI__builtin_ia32_pternlogq256_maskz: |
4552 | i = 3; l = 0; u = 255; |
4553 | break; |
4554 | case X86::BI__builtin_ia32_gatherpfdpd: |
4555 | case X86::BI__builtin_ia32_gatherpfdps: |
4556 | case X86::BI__builtin_ia32_gatherpfqpd: |
4557 | case X86::BI__builtin_ia32_gatherpfqps: |
4558 | case X86::BI__builtin_ia32_scatterpfdpd: |
4559 | case X86::BI__builtin_ia32_scatterpfdps: |
4560 | case X86::BI__builtin_ia32_scatterpfqpd: |
4561 | case X86::BI__builtin_ia32_scatterpfqps: |
4562 | i = 4; l = 2; u = 3; |
4563 | break; |
4564 | case X86::BI__builtin_ia32_reducesd_mask: |
4565 | case X86::BI__builtin_ia32_reducess_mask: |
4566 | case X86::BI__builtin_ia32_rndscalesd_round_mask: |
4567 | case X86::BI__builtin_ia32_rndscaless_round_mask: |
4568 | i = 4; l = 0; u = 255; |
4569 | break; |
4570 | } |
4571 | |
4572 | |
4573 | |
4574 | |
4575 | |
4576 | return SemaBuiltinConstantArgRange(TheCall, i, l, u, false); |
4577 | } |
4578 | |
4579 | |
4580 | |
4581 | |
4582 | |
4583 | bool Sema::getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, |
4584 | FormatStringInfo *FSI) { |
4585 | FSI->HasVAListArg = Format->getFirstArg() == 0; |
4586 | FSI->FormatIdx = Format->getFormatIdx() - 1; |
4587 | FSI->FirstDataArg = FSI->HasVAListArg ? 0 : Format->getFirstArg() - 1; |
4588 | |
4589 | |
4590 | |
4591 | |
4592 | if (IsCXXMember) { |
4593 | if(FSI->FormatIdx == 0) |
4594 | return false; |
4595 | --FSI->FormatIdx; |
4596 | if (FSI->FirstDataArg != 0) |
4597 | --FSI->FirstDataArg; |
4598 | } |
4599 | return true; |
4600 | } |
4601 | |
4602 | |
4603 | |
4604 | |
4605 | static bool CheckNonNullExpr(Sema &S, const Expr *Expr) { |
4606 | |
4607 | if (auto nullability |
4608 | = Expr->IgnoreImplicit()->getType()->getNullability(S.Context)) { |
4609 | if (*nullability == NullabilityKind::NonNull) |
4610 | return false; |
4611 | } |
4612 | |
4613 | |
4614 | |
4615 | if (const RecordType *UT = Expr->getType()->getAsUnionType()) { |
4616 | if (UT->getDecl()->hasAttr<TransparentUnionAttr>()) |
4617 | if (const CompoundLiteralExpr *CLE = |
4618 | dyn_cast<CompoundLiteralExpr>(Expr)) |
4619 | if (const InitListExpr *ILE = |
4620 | dyn_cast<InitListExpr>(CLE->getInitializer())) |
4621 | Expr = ILE->getInit(0); |
4622 | } |
4623 | |
4624 | bool Result; |
4625 | return (!Expr->isValueDependent() && |
4626 | Expr->EvaluateAsBooleanCondition(Result, S.Context) && |
4627 | !Result); |
4628 | } |
4629 | |
4630 | static void CheckNonNullArgument(Sema &S, |
4631 | const Expr *ArgExpr, |
4632 | SourceLocation CallSiteLoc) { |
4633 | if (CheckNonNullExpr(S, ArgExpr)) |
4634 | S.DiagRuntimeBehavior(CallSiteLoc, ArgExpr, |
4635 | S.PDiag(diag::warn_null_arg) |
4636 | << ArgExpr->getSourceRange()); |
4637 | } |
4638 | |
4639 | bool Sema::GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx) { |
4640 | FormatStringInfo FSI; |
4641 | if ((GetFormatStringType(Format) == FST_NSString) && |
4642 | getFormatStringInfo(Format, false, &FSI)) { |
4643 | Idx = FSI.FormatIdx; |
4644 | return true; |
4645 | } |
4646 | return false; |
4647 | } |
4648 | |
4649 | |
4650 | |
4651 | static void |
4652 | DiagnoseCStringFormatDirectiveInCFAPI(Sema &S, |
4653 | const NamedDecl *FDecl, |
4654 | Expr **Args, |
4655 | unsigned NumArgs) { |
4656 | unsigned Idx = 0; |
4657 | bool Format = false; |
4658 | ObjCStringFormatFamily SFFamily = FDecl->getObjCFStringFormattingFamily(); |
4659 | if (SFFamily == ObjCStringFormatFamily::SFF_CFString) { |
4660 | Idx = 2; |
4661 | Format = true; |
4662 | } |
4663 | else |
4664 | for (const auto *I : FDecl->specific_attrs<FormatAttr>()) { |
4665 | if (S.GetFormatNSStringIdx(I, Idx)) { |
4666 | Format = true; |
4667 | break; |
4668 | } |
4669 | } |
4670 | if (!Format || NumArgs <= Idx) |
4671 | return; |
4672 | const Expr *FormatExpr = Args[Idx]; |
4673 | if (const CStyleCastExpr *CSCE = dyn_cast<CStyleCastExpr>(FormatExpr)) |
4674 | FormatExpr = CSCE->getSubExpr(); |
4675 | const StringLiteral *FormatString; |
4676 | if (const ObjCStringLiteral *OSL = |
4677 | dyn_cast<ObjCStringLiteral>(FormatExpr->IgnoreParenImpCasts())) |
4678 | FormatString = OSL->getString(); |
4679 | else |
4680 | FormatString = dyn_cast<StringLiteral>(FormatExpr->IgnoreParenImpCasts()); |
4681 | if (!FormatString) |
4682 | return; |
4683 | if (S.FormatStringHasSArg(FormatString)) { |
4684 | S.Diag(FormatExpr->getExprLoc(), diag::warn_objc_cdirective_format_string) |
4685 | << "%s" << 1 << 1; |
4686 | S.Diag(FDecl->getLocation(), diag::note_entity_declared_at) |
4687 | << FDecl->getDeclName(); |
4688 | } |
4689 | } |
4690 | |
4691 | |
4692 | static bool isNonNullType(ASTContext &ctx, QualType type) { |
4693 | if (auto nullability = type->getNullability(ctx)) |
4694 | return *nullability == NullabilityKind::NonNull; |
4695 | |
4696 | return false; |
4697 | } |
4698 | |
4699 | static void CheckNonNullArguments(Sema &S, |
4700 | const NamedDecl *FDecl, |
4701 | const FunctionProtoType *Proto, |
4702 | ArrayRef<const Expr *> Args, |
4703 | SourceLocation CallSiteLoc) { |
4704 | assert((FDecl || Proto) && "Need a function declaration or prototype"); |
4705 | |
4706 | |
4707 | if (S.isConstantEvaluated()) |
4708 | return; |
4709 | |
4710 | llvm::SmallBitVector NonNullArgs; |
4711 | if (FDecl) { |
4712 | |
4713 | for (const auto *NonNull : FDecl->specific_attrs<NonNullAttr>()) { |
4714 | if (!NonNull->args_size()) { |
4715 | |
4716 | for (const auto *Arg : Args) |
4717 | if (S.isValidPointerAttrType(Arg->getType())) |
4718 | CheckNonNullArgument(S, Arg, CallSiteLoc); |
4719 | return; |
4720 | } |
4721 | |
4722 | for (const ParamIdx &Idx : NonNull->args()) { |
4723 | unsigned IdxAST = Idx.getASTIndex(); |
4724 | if (IdxAST >= Args.size()) |
4725 | continue; |
4726 | if (NonNullArgs.empty()) |
4727 | NonNullArgs.resize(Args.size()); |
4728 | NonNullArgs.set(IdxAST); |
4729 | } |
4730 | } |
4731 | } |
4732 | |
4733 | if (FDecl && (isa<FunctionDecl>(FDecl) || isa<ObjCMethodDecl>(FDecl))) { |
4734 | |
4735 | |
4736 | ArrayRef<ParmVarDecl*> parms; |
4737 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(FDecl)) |
4738 | parms = FD->parameters(); |
4739 | else |
4740 | parms = cast<ObjCMethodDecl>(FDecl)->parameters(); |
4741 | |
4742 | unsigned ParamIndex = 0; |
4743 | for (ArrayRef<ParmVarDecl*>::iterator I = parms.begin(), E = parms.end(); |
4744 | I != E; ++I, ++ParamIndex) { |
4745 | const ParmVarDecl *PVD = *I; |
4746 | if (PVD->hasAttr<NonNullAttr>() || |
4747 | isNonNullType(S.Context, PVD->getType())) { |
4748 | if (NonNullArgs.empty()) |
4749 | NonNullArgs.resize(Args.size()); |
4750 | |
4751 | NonNullArgs.set(ParamIndex); |
4752 | } |
4753 | } |
4754 | } else { |
4755 | |
4756 | |
4757 | if (!Proto) { |
4758 | if (const ValueDecl *VD = dyn_cast<ValueDecl>(FDecl)) { |
4759 | QualType type = VD->getType().getNonReferenceType(); |
4760 | if (auto pointerType = type->getAs<PointerType>()) |
4761 | type = pointerType->getPointeeType(); |
4762 | else if (auto blockType = type->getAs<BlockPointerType>()) |
4763 | type = blockType->getPointeeType(); |
4764 | |
4765 | |
4766 | |
4767 | Proto = type->getAs<FunctionProtoType>(); |
4768 | } |
4769 | } |
4770 | |
4771 | |
4772 | |
4773 | if (Proto) { |
4774 | unsigned Index = 0; |
4775 | for (auto paramType : Proto->getParamTypes()) { |
4776 | if (isNonNullType(S.Context, paramType)) { |
4777 | if (NonNullArgs.empty()) |
4778 | NonNullArgs.resize(Args.size()); |
4779 | |
4780 | NonNullArgs.set(Index); |
4781 | } |
4782 | |
4783 | ++Index; |
4784 | } |
4785 | } |
4786 | } |
4787 | |
4788 | |
4789 | for (unsigned ArgIndex = 0, ArgIndexEnd = NonNullArgs.size(); |
4790 | ArgIndex != ArgIndexEnd; ++ArgIndex) { |
4791 | if (NonNullArgs[ArgIndex]) |
4792 | CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc); |
4793 | } |
4794 | } |
4795 | |
4796 | |
4797 | |
4798 | |
4799 | |
4800 | void Sema::CheckArgAlignment(SourceLocation Loc, NamedDecl *FDecl, |
4801 | StringRef ParamName, QualType ArgTy, |
4802 | QualType ParamTy) { |
4803 | |
4804 | |
4805 | if (!ParamTy->isPointerType() && !ParamTy->isReferenceType()) |
4806 | return; |
4807 | |
4808 | |
4809 | |
4810 | |
4811 | if (ParamTy->isPointerType()) |
4812 | ArgTy = ArgTy->getPointeeType(); |
4813 | |
4814 | |
4815 | ParamTy = ParamTy->getPointeeType(); |
4816 | |
4817 | |
4818 | |
4819 | if (ArgTy.isNull() || ParamTy->isIncompleteType() || |
4820 | ArgTy->isIncompleteType() || ParamTy->isUndeducedType() || |
4821 | ArgTy->isUndeducedType()) |
4822 | return; |
4823 | |
4824 | CharUnits ParamAlign = Context.getTypeAlignInChars(ParamTy); |
4825 | CharUnits ArgAlign = Context.getTypeAlignInChars(ArgTy); |
4826 | |
4827 | |
4828 | |
4829 | if (ArgAlign < ParamAlign) |
4830 | Diag(Loc, diag::warn_param_mismatched_alignment) |
4831 | << (int)ArgAlign.getQuantity() << (int)ParamAlign.getQuantity() |
4832 | << ParamName << FDecl; |
4833 | } |
4834 | |
4835 | |
4836 | |
4837 | |
4838 | void Sema::checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto, |
4839 | const Expr *ThisArg, ArrayRef<const Expr *> Args, |
4840 | bool IsMemberFunction, SourceLocation Loc, |
4841 | SourceRange Range, VariadicCallType CallType) { |
4842 | |
4843 | if (CurContext->isDependentContext()) |
4844 | return; |
4845 | |
4846 | |
4847 | llvm::SmallBitVector CheckedVarArgs; |
4848 | if (FDecl) { |
4849 | for (const auto *I : FDecl->specific_attrs<FormatAttr>()) { |
4850 | |
4851 | CheckedVarArgs.resize(Args.size()); |
4852 | |
4853 | CheckFormatArguments(I, Args, IsMemberFunction, CallType, Loc, Range, |
4854 | CheckedVarArgs); |
4855 | } |
4856 | } |
4857 | |
4858 | |
4859 | |
4860 | auto *FD = dyn_cast_or_null<FunctionDecl>(FDecl); |
4861 | if (CallType != VariadicDoesNotApply && |
4862 | (!FD || FD->getBuiltinID() != Builtin::BI__noop)) { |
4863 | unsigned NumParams = Proto ? Proto->getNumParams() |
4864 | : FDecl && isa<FunctionDecl>(FDecl) |
4865 | ? cast<FunctionDecl>(FDecl)->getNumParams() |
4866 | : FDecl && isa<ObjCMethodDecl>(FDecl) |
4867 | ? cast<ObjCMethodDecl>(FDecl)->param_size() |
4868 | : 0; |
4869 | |
4870 | for (unsigned ArgIdx = NumParams; ArgIdx < Args.size(); ++ArgIdx) { |
4871 | |
4872 | if (const Expr *Arg = Args[ArgIdx]) { |
4873 | if (CheckedVarArgs.empty() || !CheckedVarArgs[ArgIdx]) |
4874 | checkVariadicArgument(Arg, CallType); |
4875 | } |
4876 | } |
4877 | } |
4878 | |
4879 | if (FDecl || Proto) { |
4880 | CheckNonNullArguments(*this, FDecl, Proto, Args, Loc); |
4881 | |
4882 | |
4883 | if (FDecl) { |
4884 | for (const auto *I : FDecl->specific_attrs<ArgumentWithTypeTagAttr>()) |
4885 | CheckArgumentWithTypeTag(I, Args, Loc); |
4886 | } |
4887 | } |
4888 | |
4889 | |
4890 | |
4891 | if (!Proto && FDecl) { |
4892 | const auto *FT = FDecl->getFunctionType(); |
4893 | if (isa_and_nonnull<FunctionProtoType>(FT)) |
4894 | Proto = cast<FunctionProtoType>(FDecl->getFunctionType()); |
4895 | } |
4896 | if (Proto) { |
4897 | |
4898 | |
4899 | const auto N = std::min<unsigned>(Proto->getNumParams(), Args.size()); |
4900 | for (unsigned ArgIdx = 0; ArgIdx < N; ++ArgIdx) { |
4901 | |
4902 | if (const Expr *Arg = Args[ArgIdx]) { |
4903 | if (Arg->containsErrors()) |
4904 | continue; |
4905 | |
4906 | QualType ParamTy = Proto->getParamType(ArgIdx); |
4907 | QualType ArgTy = Arg->getType(); |
4908 | CheckArgAlignment(Arg->getExprLoc(), FDecl, std::to_string(ArgIdx + 1), |
4909 | ArgTy, ParamTy); |
4910 | } |
4911 | } |
4912 | } |
4913 | |
4914 | if (FDecl && FDecl->hasAttr<AllocAlignAttr>()) { |
4915 | auto *AA = FDecl->getAttr<AllocAlignAttr>(); |
4916 | const Expr *Arg = Args[AA->getParamIndex().getASTIndex()]; |
4917 | if (!Arg->isValueDependent()) { |
4918 | Expr::EvalResult Align; |
4919 | if (Arg->EvaluateAsInt(Align, Context)) { |
4920 | const llvm::APSInt &I = Align.Val.getInt(); |
4921 | if (!I.isPowerOf2()) |
4922 | Diag(Arg->getExprLoc(), diag::warn_alignment_not_power_of_two) |
4923 | << Arg->getSourceRange(); |
4924 | |
4925 | if (I > Sema::MaximumAlignment) |
4926 | Diag(Arg->getExprLoc(), diag::warn_assume_aligned_too_great) |
4927 | << Arg->getSourceRange() << Sema::MaximumAlignment; |
4928 | } |
4929 | } |
4930 | } |
4931 | |
4932 | if (FD) |
4933 | diagnoseArgDependentDiagnoseIfAttrs(FD, ThisArg, Args, Loc); |
4934 | } |
4935 | |
4936 | |
4937 | |
4938 | void Sema::CheckConstructorCall(FunctionDecl *FDecl, QualType ThisType, |
4939 | ArrayRef<const Expr *> Args, |
4940 | const FunctionProtoType *Proto, |
4941 | SourceLocation Loc) { |
4942 | VariadicCallType CallType = |
4943 | Proto->isVariadic() ? VariadicConstructor : VariadicDoesNotApply; |
4944 | |
4945 | auto *Ctor = cast<CXXConstructorDecl>(FDecl); |
4946 | CheckArgAlignment(Loc, FDecl, "'this'", Context.getPointerType(ThisType), |
4947 | Context.getPointerType(Ctor->getThisObjectType())); |
4948 | |
4949 | checkCall(FDecl, Proto, nullptr, Args, true, |
4950 | Loc, SourceRange(), CallType); |
4951 | } |
4952 | |
4953 | |
4954 | |
4955 | bool Sema::CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, |
4956 | const FunctionProtoType *Proto) { |
4957 | bool IsMemberOperatorCall = isa<CXXOperatorCallExpr>(TheCall) && |
| 1 | Assuming 'TheCall' is not a 'CXXOperatorCallExpr' | |
|
4958 | isa<CXXMethodDecl>(FDecl); |
4959 | bool IsMemberFunction = isa<CXXMemberCallExpr>(TheCall) || |
| 2 | | Assuming 'TheCall' is not a 'CXXMemberCallExpr' | |
|
4960 | IsMemberOperatorCall; |
4961 | VariadicCallType CallType = getVariadicCallType(FDecl, Proto, |
4962 | TheCall->getCallee()); |
4963 | Expr** Args = TheCall->getArgs(); |
4964 | unsigned NumArgs = TheCall->getNumArgs(); |
4965 | |
4966 | Expr *ImplicitThis = nullptr; |
4967 | if (IsMemberOperatorCall) { |
| |
4968 | |
4969 | |
4970 | |
4971 | ImplicitThis = Args[0]; |
4972 | ++Args; |
4973 | --NumArgs; |
4974 | } else if (IsMemberFunction) |
| |
4975 | ImplicitThis = |
4976 | cast<CXXMemberCallExpr>(TheCall)->getImplicitObjectArgument(); |
4977 | |
4978 | if (ImplicitThis) { |
| |
4979 | |
4980 | |
4981 | QualType ThisType = ImplicitThis->getType(); |
4982 | if (!ThisType->isPointerType()) { |
4983 | assert(!ThisType->isReferenceType()); |
4984 | ThisType = Context.getPointerType(ThisType); |
4985 | } |
4986 | |
4987 | QualType ThisTypeFromDecl = |
4988 | Context.getPointerType(cast<CXXMethodDecl>(FDecl)->getThisObjectType()); |
4989 | |
4990 | CheckArgAlignment(TheCall->getRParenLoc(), FDecl, "'this'", ThisType, |
4991 | ThisTypeFromDecl); |
4992 | } |
4993 | |
4994 | checkCall(FDecl, Proto, ImplicitThis, llvm::makeArrayRef(Args, NumArgs), |
4995 | IsMemberFunction, TheCall->getRParenLoc(), |
4996 | TheCall->getCallee()->getSourceRange(), CallType); |
4997 | |
4998 | IdentifierInfo *FnInfo = FDecl->getIdentifier(); |
4999 | |
5000 | |
5001 | if (!FnInfo) |
| 6 | | Assuming 'FnInfo' is non-null | |
|
| |
5002 | return false; |
5003 | |
5004 | CheckTCBEnforcement(TheCall, FDecl); |
5005 | |
5006 | CheckAbsoluteValueFunction(TheCall, FDecl); |
5007 | CheckMaxUnsignedZero(TheCall, FDecl); |
5008 | |
5009 | if (getLangOpts().ObjC) |
| 8 | | Assuming field 'ObjC' is 0 | |
|
| |
5010 | DiagnoseCStringFormatDirectiveInCFAPI(*this, FDecl, Args, NumArgs); |
5011 | |
5012 | unsigned CMId = FDecl->getMemoryFunctionKind(); |
5013 | |
5014 | |
5015 | switch (CMId) { |
| 10 | | Control jumps to 'case BIfree:' at line 5025 | |
|
5016 | case 0: |
5017 | return false; |
5018 | case Builtin::BIstrlcpy: |
5019 | case Builtin::BIstrlcat: |
5020 | CheckStrlcpycatArguments(TheCall, FnInfo); |
5021 | break; |
5022 | case Builtin::BIstrncat: |
5023 | CheckStrncatArguments(TheCall, FnInfo); |
5024 | break; |
5025 | case Builtin::BIfree: |
5026 | CheckFreeArguments(TheCall); |
| 11 | | Calling 'Sema::CheckFreeArguments' | |
|
5027 | break; |
5028 | default: |
5029 | CheckMemaccessArguments(TheCall, CMId, FnInfo); |
5030 | } |
5031 | |
5032 | return false; |
5033 | } |
5034 | |
5035 | bool Sema::CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation lbrac, |
5036 | ArrayRef<const Expr *> Args) { |
5037 | VariadicCallType CallType = |
5038 | Method->isVariadic() ? VariadicMethod : VariadicDoesNotApply; |
5039 | |
5040 | checkCall(Method, nullptr, nullptr, Args, |
5041 | false, lbrac, Method->getSourceRange(), |
5042 | CallType); |
5043 | |
5044 | return false; |
5045 | } |
5046 | |
5047 | bool Sema::CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, |
5048 | const FunctionProtoType *Proto) { |
5049 | QualType Ty; |
5050 | if (const auto *V = dyn_cast<VarDecl>(NDecl)) |
5051 | Ty = V->getType().getNonReferenceType(); |
5052 | else if (const auto *F = dyn_cast<FieldDecl>(NDecl)) |
5053 | Ty = F->getType().getNonReferenceType(); |
5054 | else |
5055 | return false; |
5056 | |
5057 | if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType() && |
5058 | !Ty->isFunctionProtoType()) |
5059 | return false; |
5060 | |
5061 | VariadicCallType CallType; |
5062 | if (!Proto || !Proto->isVariadic()) { |
5063 | CallType = VariadicDoesNotApply; |
5064 | } else if (Ty->isBlockPointerType()) { |
5065 | CallType = VariadicBlock; |
5066 | } else { |
5067 | CallType = VariadicFunction; |
5068 | } |
5069 | |
5070 | checkCall(NDecl, Proto, nullptr, |
5071 | llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), |
5072 | false, TheCall->getRParenLoc(), |
5073 | TheCall->getCallee()->getSourceRange(), CallType); |
5074 | |
5075 | return false; |
5076 | } |
5077 | |
5078 | |
5079 | |
5080 | bool Sema::CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto) { |
5081 | VariadicCallType CallType = getVariadicCallType(nullptr, Proto, |
5082 | TheCall->getCallee()); |
5083 | checkCall(nullptr, Proto, nullptr, |
5084 | llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), |
5085 | false, TheCall->getRParenLoc(), |
5086 | TheCall->getCallee()->getSourceRange(), CallType); |
5087 | |
5088 | return false; |
5089 | } |
5090 | |
5091 | static bool isValidOrderingForOp(int64_t Ordering, AtomicExpr::AtomicOp Op) { |
5092 | if (!llvm::isValidAtomicOrderingCABI(Ordering)) |
5093 | return false; |
5094 | |
5095 | auto OrderingCABI = (llvm::AtomicOrderingCABI)Ordering; |
5096 | switch (Op) { |
5097 | case AtomicExpr::AO__c11_atomic_init: |
5098 | case AtomicExpr::AO__opencl_atomic_init: |
5099 | llvm_unreachable("There is no ordering argument for an init"); |
5100 | |
5101 | case AtomicExpr::AO__c11_atomic_load: |
5102 | case AtomicExpr::AO__opencl_atomic_load: |
5103 | case AtomicExpr::AO__atomic_load_n: |
5104 | case AtomicExpr::AO__atomic_load: |
5105 | return OrderingCABI != llvm::AtomicOrderingCABI::release && |
5106 | OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; |
5107 | |
5108 | case AtomicExpr::AO__c11_atomic_store: |
5109 | case AtomicExpr::AO__opencl_atomic_store: |
5110 | case AtomicExpr::AO__atomic_store: |
5111 | case AtomicExpr::AO__atomic_store_n: |
5112 | return OrderingCABI != llvm::AtomicOrderingCABI::consume && |
5113 | OrderingCABI != llvm::AtomicOrderingCABI::acquire && |
5114 | OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; |
5115 | |
5116 | default: |
5117 | return true; |
5118 | } |
5119 | } |
5120 | |
5121 | ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult, |
5122 | AtomicExpr::AtomicOp Op) { |
5123 | CallExpr *TheCall = cast<CallExpr>(TheCallResult.get()); |
5124 | DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
5125 | MultiExprArg Args{TheCall->getArgs(), TheCall->getNumArgs()}; |
5126 | return BuildAtomicExpr({TheCall->getBeginLoc(), TheCall->getEndLoc()}, |
5127 | DRE->getSourceRange(), TheCall->getRParenLoc(), Args, |
5128 | Op); |
5129 | } |
5130 | |
5131 | ExprResult Sema::BuildAtomicExpr(SourceRange CallRange, SourceRange ExprRange, |
5132 | SourceLocation RParenLoc, MultiExprArg Args, |
5133 | AtomicExpr::AtomicOp Op, |
5134 | AtomicArgumentOrder ArgOrder) { |
5135 | |
5136 | |
5137 | |
5138 | enum { |
5139 | |
5140 | Init, |
5141 | |
5142 | |
5143 | Load, |
5144 | |
5145 | |
5146 | LoadCopy, |
5147 | |
5148 | |
5149 | Copy, |
5150 | |
5151 | |
5152 | Arithmetic, |
5153 | |
5154 | |
5155 | Xchg, |
5156 | |
5157 | |
5158 | GNUXchg, |
5159 | |
5160 | |
5161 | C11CmpXchg, |
5162 | |
5163 | |
5164 | GNUCmpXchg |
5165 | } Form = Init; |
5166 | |
5167 | const unsigned NumForm = GNUCmpXchg + 1; |
5168 | const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 3, 4, 5, 6 }; |
5169 | const unsigned NumVals[] = { 1, 0, 1, 1, 1, 1, 2, 2, 3 }; |
5170 | |
5171 | |
5172 | |
5173 | |
5174 | |
5175 | |
5176 | |
5177 | static_assert(sizeof(NumArgs)/sizeof(NumArgs[0]) == NumForm |
5178 | && sizeof(NumVals)/sizeof(NumVals[0]) == NumForm, |
5179 | "need to update code for modified forms"); |
5180 | static_assert(AtomicExpr::AO__c11_atomic_init == 0 && |
5181 | AtomicExpr::AO__c11_atomic_fetch_min + 1 == |
5182 | AtomicExpr::AO__atomic_load, |
5183 | "need to update code for modified C11 atomics"); |
5184 | bool IsOpenCL = Op >= AtomicExpr::AO__opencl_atomic_init && |
5185 | Op <= AtomicExpr::AO__opencl_atomic_fetch_max; |
5186 | bool IsC11 = (Op >= AtomicExpr::AO__c11_atomic_init && |
5187 | Op <= AtomicExpr::AO__c11_atomic_fetch_min) || |
5188 | IsOpenCL; |
5189 | bool IsN = Op == AtomicExpr::AO__atomic_load_n || |
5190 | Op == AtomicExpr::AO__atomic_store_n || |
5191 | Op == AtomicExpr::AO__atomic_exchange_n || |
5192 | Op == AtomicExpr::AO__atomic_compare_exchange_n; |
5193 | bool IsAddSub = false; |
5194 | |
5195 | switch (Op) { |
5196 | case AtomicExpr::AO__c11_atomic_init: |
5197 | case AtomicExpr::AO__opencl_atomic_init: |
5198 | Form = Init; |
5199 | break; |
5200 | |
5201 | case AtomicExpr::AO__c11_atomic_load: |
5202 | case AtomicExpr::AO__opencl_atomic_load: |
5203 | case AtomicExpr::AO__atomic_load_n: |
5204 | Form = Load; |
5205 | break; |
5206 | |
5207 | case AtomicExpr::AO__atomic_load: |
5208 | Form = LoadCopy; |
5209 | break; |
5210 | |
5211 | case AtomicExpr::AO__c11_atomic_store: |
5212 | case AtomicExpr::AO__opencl_atomic_store: |
5213 | case AtomicExpr::AO__atomic_store: |
5214 | case AtomicExpr::AO__atomic_store_n: |
5215 | Form = Copy; |
5216 | break; |
5217 | |
5218 | case AtomicExpr::AO__c11_atomic_fetch_add: |
5219 | case AtomicExpr::AO__c11_atomic_fetch_sub: |
5220 | case AtomicExpr::AO__opencl_atomic_fetch_add: |
5221 | case AtomicExpr::AO__opencl_atomic_fetch_sub: |
5222 | case AtomicExpr::AO__atomic_fetch_add: |
5223 | case AtomicExpr::AO__atomic_fetch_sub: |
5224 | case AtomicExpr::AO__atomic_add_fetch: |
5225 | case AtomicExpr::AO__atomic_sub_fetch: |
5226 | IsAddSub = true; |
5227 | Form = Arithmetic; |
5228 | break; |
5229 | case AtomicExpr::AO__c11_atomic_fetch_and: |
5230 | case AtomicExpr::AO__c11_atomic_fetch_or: |
5231 | case AtomicExpr::AO__c11_atomic_fetch_xor: |
5232 | case AtomicExpr::AO__opencl_atomic_fetch_and: |
5233 | case AtomicExpr::AO__opencl_atomic_fetch_or: |
5234 | case AtomicExpr::AO__opencl_atomic_fetch_xor: |
5235 | case AtomicExpr::AO__atomic_fetch_and: |
5236 | case AtomicExpr::AO__atomic_fetch_or: |
5237 | case AtomicExpr::AO__atomic_fetch_xor: |
5238 | case AtomicExpr::AO__atomic_fetch_nand: |
5239 | case AtomicExpr::AO__atomic_and_fetch: |
5240 | case AtomicExpr::AO__atomic_or_fetch: |
5241 | case AtomicExpr::AO__atomic_xor_fetch: |
5242 | case AtomicExpr::AO__atomic_nand_fetch: |
5243 | Form = Arithmetic; |
5244 | break; |
5245 | case AtomicExpr::AO__c11_atomic_fetch_min: |
5246 | case AtomicExpr::AO__c11_atomic_fetch_max: |
5247 | case AtomicExpr::AO__opencl_atomic_fetch_min: |
5248 | case AtomicExpr::AO__opencl_atomic_fetch_max: |
5249 | case AtomicExpr::AO__atomic_min_fetch: |
5250 | case AtomicExpr::AO__atomic_max_fetch: |
5251 | case AtomicExpr::AO__atomic_fetch_min: |
5252 | case AtomicExpr::AO__atomic_fetch_max: |
5253 | Form = Arithmetic; |
5254 | break; |
5255 | |
5256 | case AtomicExpr::AO__c11_atomic_exchange: |
5257 | case AtomicExpr::AO__opencl_atomic_exchange: |
5258 | case AtomicExpr::AO__atomic_exchange_n: |
5259 | Form = Xchg; |
5260 | break; |
5261 | |
5262 | case AtomicExpr::AO__atomic_exchange: |
5263 | Form = GNUXchg; |
5264 | break; |
5265 | |
5266 | case AtomicExpr::AO__c11_atomic_compare_exchange_strong: |
5267 | case AtomicExpr::AO__c11_atomic_compare_exchange_weak: |
5268 | case AtomicExpr::AO__opencl_atomic_compare_exchange_strong: |
5269 | case AtomicExpr::AO__opencl_atomic_compare_exchange_weak: |
5270 | Form = C11CmpXchg; |
5271 | break; |
5272 | |
5273 | case AtomicExpr::AO__atomic_compare_exchange: |
5274 | case AtomicExpr::AO__atomic_compare_exchange_n: |
5275 | Form = GNUCmpXchg; |
5276 | break; |
5277 | } |
5278 | |
5279 | unsigned AdjustedNumArgs = NumArgs[Form]; |
5280 | if (IsOpenCL && Op != AtomicExpr::AO__opencl_atomic_init) |
5281 | ++AdjustedNumArgs; |
5282 | |
5283 | if (Args.size() < AdjustedNumArgs) { |
5284 | Diag(CallRange.getEnd(), diag::err_typecheck_call_too_few_args) |
5285 | << 0 << AdjustedNumArgs << static_cast<unsigned>(Args.size()) |
5286 | << ExprRange; |
5287 | return ExprError(); |
5288 | } else if (Args.size() > AdjustedNumArgs) { |
5289 | Diag(Args[AdjustedNumArgs]->getBeginLoc(), |
5290 | diag::err_typecheck_call_too_many_args) |
5291 | << 0 << AdjustedNumArgs << static_cast<unsigned>(Args.size()) |
5292 | << ExprRange; |
5293 | return ExprError(); |
5294 | } |
5295 | |
5296 | |
5297 | Expr *Ptr = Args[0]; |
5298 | ExprResult ConvertedPtr = DefaultFunctionArrayLvalueConversion(Ptr); |
5299 | if (ConvertedPtr.isInvalid()) |
5300 | return ExprError(); |
5301 | |
5302 | Ptr = ConvertedPtr.get(); |
5303 | const PointerType *pointerType = Ptr->getType()->getAs<PointerType>(); |
5304 | if (!pointerType) { |
5305 | Diag(ExprRange.getBegin(), diag::err_atomic_builtin_must_be_pointer) |
5306 | << Ptr->getType() << Ptr->getSourceRange(); |
5307 | return ExprError(); |
5308 | } |
5309 | |
5310 | |
5311 | QualType AtomTy = pointerType->getPointeeType(); |
5312 | QualType ValType = AtomTy; |
5313 | if (IsC11) { |
5314 | if (!AtomTy->isAtomicType()) { |
5315 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic) |
5316 | << Ptr->getType() << Ptr->getSourceRange(); |
5317 | return ExprError(); |
5318 | } |
5319 | if ((Form != Load && Form != LoadCopy && AtomTy.isConstQualified()) || |
5320 | AtomTy.getAddressSpace() == LangAS::opencl_constant) { |
5321 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_non_const_atomic) |
5322 | << (AtomTy.isConstQualified() ? 0 : 1) << Ptr->getType() |
5323 | << Ptr->getSourceRange(); |
5324 | return ExprError(); |
5325 | } |
5326 | ValType = AtomTy->castAs<AtomicType>()->getValueType(); |
5327 | } else if (Form != Load && Form != LoadCopy) { |
5328 | if (ValType.isConstQualified()) { |
5329 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_non_const_pointer) |
5330 | << Ptr->getType() << Ptr->getSourceRange(); |
5331 | return ExprError(); |
5332 | } |
5333 | } |
5334 | |
5335 | |
5336 | if (Form == Arithmetic) { |
5337 | |
5338 | |
5339 | auto IsAllowedValueType = [&](QualType ValType) { |
5340 | if (ValType->isIntegerType()) |
5341 | return true; |
5342 | if (ValType->isPointerType()) |
5343 | return true; |
5344 | if (!ValType->isFloatingType()) |
5345 | return false; |
5346 | |
5347 | if (ValType->isSpecificBuiltinType(BuiltinType::LongDouble) && |
5348 | &Context.getTargetInfo().getLongDoubleFormat() == |
5349 | &llvm::APFloat::x87DoubleExtended()) |
5350 | return false; |
5351 | return true; |
5352 | }; |
5353 | if (IsAddSub && !IsAllowedValueType(ValType)) { |
5354 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic_int_ptr_or_fp) |
5355 | << IsC11 << Ptr->getType() << Ptr->getSourceRange(); |
5356 | return ExprError(); |
5357 | } |
5358 | if (!IsAddSub && !ValType->isIntegerType()) { |
5359 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic_int) |
5360 | << IsC11 << Ptr->getType() << Ptr->getSourceRange(); |
5361 | return ExprError(); |
5362 | } |
5363 | if (IsC11 && ValType->isPointerType() && |
5364 | RequireCompleteType(Ptr->getBeginLoc(), ValType->getPointeeType(), |
5365 | diag::err_incomplete_type)) { |
5366 | return ExprError(); |
5367 | } |
5368 | } else if (IsN && !ValType->isIntegerType() && !ValType->isPointerType()) { |
5369 | |
5370 | |
5371 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_atomic_int_or_ptr) |
5372 | << IsC11 << Ptr->getType() << Ptr->getSourceRange(); |
5373 | return ExprError(); |
5374 | } |
5375 | |
5376 | if (!IsC11 && !AtomTy.isTriviallyCopyableType(Context) && |
5377 | !AtomTy->isScalarType()) { |
5378 | |
5379 | |
5380 | Diag(ExprRange.getBegin(), diag::err_atomic_op_needs_trivial_copy) |
5381 | << Ptr->getType() << Ptr->getSourceRange(); |
5382 | return ExprError(); |
5383 | } |
5384 | |
5385 | switch (ValType.getObjCLifetime()) { |
5386 | case Qualifiers::OCL_None: |
5387 | case Qualifiers::OCL_ExplicitNone: |
5388 | |
5389 | break; |
5390 | |
5391 | case Qualifiers::OCL_Weak: |
5392 | case Qualifiers::OCL_Strong: |
5393 | case Qualifiers::OCL_Autoreleasing: |
5394 | |
5395 | |
5396 | Diag(ExprRange.getBegin(), diag::err_arc_atomic_ownership) |
5397 | << ValType << Ptr->getSourceRange(); |
5398 | return ExprError(); |
5399 | } |
5400 | |
5401 | |
5402 | |
5403 | |
5404 | |
5405 | ValType.removeLocalVolatile(); |
5406 | ValType.removeLocalConst(); |
5407 | QualType ResultType = ValType; |
5408 | if (Form == Copy || Form == LoadCopy || Form == GNUXchg || |
5409 | Form == Init) |
5410 | ResultType = Context.VoidTy; |
5411 | else if (Form == C11CmpXchg || Form == GNUCmpXchg) |
5412 | ResultType = Context.BoolTy; |
5413 | |
5414 | |
5415 | |
5416 | QualType ByValType = ValType; |
5417 | bool IsPassedByAddress = false; |
5418 | if (!IsC11 && !IsN) { |
5419 | ByValType = Ptr->getType(); |
5420 | IsPassedByAddress = true; |
5421 | } |
5422 | |
5423 | SmallVector<Expr *, 5> APIOrderedArgs; |
5424 | if (ArgOrder == Sema::AtomicArgumentOrder::AST) { |
5425 | APIOrderedArgs.push_back(Args[0]); |
5426 | switch (Form) { |
5427 | case Init: |
5428 | case Load: |
5429 | APIOrderedArgs.push_back(Args[1]); |
5430 | break; |
5431 | case LoadCopy: |
5432 | case Copy: |
5433 | case Arithmetic: |
5434 | case Xchg: |
5435 | APIOrderedArgs.push_back(Args[2]); |
5436 | APIOrderedArgs.push_back(Args[1]); |
5437 | break; |
5438 | case GNUXchg: |
5439 | APIOrderedArgs.push_back(Args[2]); |
5440 | APIOrderedArgs.push_back(Args[3]); |
5441 | APIOrderedArgs.push_back(Args[1]); |
5442 | break; |
5443 | case C11CmpXchg: |
5444 | APIOrderedArgs.push_back(Args[2]); |
5445 | APIOrderedArgs.push_back(Args[4]); |
5446 | APIOrderedArgs.push_back(Args[1]); |
5447 | APIOrderedArgs.push_back(Args[3]); |
5448 | break; |
5449 | case GNUCmpXchg: |
5450 | APIOrderedArgs.push_back(Args[2]); |
5451 | APIOrderedArgs.push_back(Args[4]); |
5452 | APIOrderedArgs.push_back(Args[5]); |
5453 | APIOrderedArgs.push_back(Args[1]); |
5454 | APIOrderedArgs.push_back(Args[3]); |
5455 | break; |
5456 | } |
5457 | } else |
5458 | APIOrderedArgs.append(Args.begin(), Args.end()); |
5459 | |
5460 | |
5461 | |
5462 | |
5463 | |
5464 | |
5465 | for (unsigned i = 0; i != APIOrderedArgs.size(); ++i) { |
5466 | QualType Ty; |
5467 | if (i < NumVals[Form] + 1) { |
5468 | switch (i) { |
5469 | case 0: |
5470 | |
5471 | |
5472 | CheckNonNullArgument(*this, APIOrderedArgs[i], ExprRange.getBegin()); |
5473 | |
5474 | continue; |
5475 | case 1: |
5476 | |
5477 | |
5478 | |
5479 | |
5480 | assert(Form != Load); |
5481 | if (Form == Arithmetic && ValType->isPointerType()) |
5482 | Ty = Context.getPointerDiffType(); |
5483 | else if (Form == Init || Form == Arithmetic) |
5484 | Ty = ValType; |
5485 | else if (Form == Copy || Form == Xchg) { |
5486 | if (IsPassedByAddress) { |
5487 | |
5488 | CheckNonNullArgument(*this, APIOrderedArgs[i], |
5489 | ExprRange.getBegin()); |
5490 | } |
5491 | Ty = ByValType; |
5492 | } else { |
5493 | Expr *ValArg = APIOrderedArgs[i]; |
5494 | |
5495 | CheckNonNullArgument(*this, ValArg, ExprRange.getBegin()); |
5496 | LangAS AS = LangAS::Default; |
5497 | |
5498 | if (const PointerType *PtrTy = |
5499 | ValArg->getType()->getAs<PointerType>()) { |
5500 | AS = PtrTy->getPointeeType().getAddressSpace(); |
5501 | } |
5502 | Ty = Context.getPointerType( |
5503 | Context.getAddrSpaceQualType(ValType.getUnqualifiedType(), AS)); |
5504 | } |
5505 | break; |
5506 | case 2: |
5507 | |
5508 | |
5509 | if (IsPassedByAddress) |
5510 | CheckNonNullArgument(*this, APIOrderedArgs[i], ExprRange.getBegin()); |
5511 | Ty = ByValType; |
5512 | break; |
5513 | case 3: |
5514 | |
5515 | Ty = Context.BoolTy; |
5516 | break; |
5517 | } |
5518 | } else { |
5519 | |
5520 | Ty = Context.IntTy; |
5521 | } |
5522 | |
5523 | InitializedEntity Entity = |
5524 | InitializedEntity::InitializeParameter(Context, Ty, false); |
5525 | ExprResult Arg = APIOrderedArgs[i]; |
5526 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
5527 | if (Arg.isInvalid()) |
5528 | return true; |
5529 | APIOrderedArgs[i] = Arg.get(); |
5530 | } |
5531 | |
5532 | |
5533 | SmallVector<Expr*, 5> SubExprs; |
5534 | SubExprs.push_back(Ptr); |
5535 | switch (Form) { |
5536 | case Init: |
5537 | |
5538 | SubExprs.push_back(APIOrderedArgs[1]); |
5539 | break; |
5540 | case Load: |
5541 | SubExprs.push_back(APIOrderedArgs[1]); |
5542 | break; |
5543 | case LoadCopy: |
5544 | case Copy: |
5545 | case Arithmetic: |
5546 | case Xchg: |
5547 | SubExprs.push_back(APIOrderedArgs[2]); |
5548 | SubExprs.push_back(APIOrderedArgs[1]); |
5549 | break; |
5550 | case GNUXchg: |
5551 | |
5552 | SubExprs.push_back(APIOrderedArgs[3]); |
5553 | SubExprs.push_back(APIOrderedArgs[1]); |
5554 | SubExprs.push_back(APIOrderedArgs[2]); |
5555 | break; |
5556 | case C11CmpXchg: |
5557 | SubExprs.push_back(APIOrderedArgs[3]); |
5558 | SubExprs.push_back(APIOrderedArgs[1]); |
5559 | SubExprs.push_back(APIOrderedArgs[4]); |
5560 | SubExprs.push_back(APIOrderedArgs[2]); |
5561 | break; |
5562 | case GNUCmpXchg: |
5563 | SubExprs.push_back(APIOrderedArgs[4]); |
5564 | SubExprs.push_back(APIOrderedArgs[1]); |
5565 | SubExprs.push_back(APIOrderedArgs[5]); |
5566 | SubExprs.push_back(APIOrderedArgs[2]); |
5567 | SubExprs.push_back(APIOrderedArgs[3]); |
5568 | break; |
5569 | } |
5570 | |
5571 | if (SubExprs.size() >= 2 && Form != Init) { |
5572 | if (Optional<llvm::APSInt> Result = |
5573 | SubExprs[1]->getIntegerConstantExpr(Context)) |
5574 | if (!isValidOrderingForOp(Result->getSExtValue(), Op)) |
5575 | Diag(SubExprs[1]->getBeginLoc(), |
5576 | diag::warn_atomic_op_has_invalid_memory_order) |
5577 | << SubExprs[1]->getSourceRange(); |
5578 | } |
5579 | |
5580 | if (auto ScopeModel = AtomicExpr::getScopeModel(Op)) { |
5581 | auto *Scope = Args[Args.size() - 1]; |
5582 | if (Optional<llvm::APSInt> Result = |
5583 | Scope->getIntegerConstantExpr(Context)) { |
5584 | if (!ScopeModel->isValid(Result->getZExtValue())) |
5585 | Diag(Scope->getBeginLoc(), diag::err_atomic_op_has_invalid_synch_scope) |
5586 | << Scope->getSourceRange(); |
5587 | } |
5588 | SubExprs.push_back(Scope); |
5589 | } |
5590 | |
5591 | AtomicExpr *AE = new (Context) |
5592 | AtomicExpr(ExprRange.getBegin(), SubExprs, ResultType, Op, RParenLoc); |
5593 | |
5594 | if ((Op == AtomicExpr::AO__c11_atomic_load || |
5595 | Op == AtomicExpr::AO__c11_atomic_store || |
5596 | Op == AtomicExpr::AO__opencl_atomic_load || |
5597 | Op == AtomicExpr::AO__opencl_atomic_store ) && |
5598 | Context.AtomicUsesUnsupportedLibcall(AE)) |
5599 | Diag(AE->getBeginLoc(), diag::err_atomic_load_store_uses_lib) |
5600 | << ((Op == AtomicExpr::AO__c11_atomic_load || |
5601 | Op == AtomicExpr::AO__opencl_atomic_load) |
5602 | ? 0 |
5603 | : 1); |
5604 | |
5605 | if (ValType->isExtIntType()) { |
5606 | Diag(Ptr->getExprLoc(), diag::err_atomic_builtin_ext_int_prohibit); |
5607 | return ExprError(); |
5608 | } |
5609 | |
5610 | return AE; |
5611 | } |
5612 | |
5613 | |
5614 | |
5615 | |
5616 | |
5617 | |
5618 | |
5619 | |
5620 | static bool checkBuiltinArgument(Sema &S, CallExpr *E, unsigned ArgIndex) { |
5621 | FunctionDecl *Fn = E->getDirectCallee(); |
5622 | assert(Fn && "builtin call without direct callee!"); |
5623 | |
5624 | ParmVarDecl *Param = Fn->getParamDecl(ArgIndex); |
5625 | InitializedEntity Entity = |
5626 | InitializedEntity::InitializeParameter(S.Context, Param); |
5627 | |
5628 | ExprResult Arg = E->getArg(0); |
5629 | Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); |
5630 | if (Arg.isInvalid()) |
5631 | return true; |
5632 | |
5633 | E->setArg(ArgIndex, Arg.get()); |
5634 | return false; |
5635 | } |
5636 | |
5637 | |
5638 | |
5639 | |
5640 | |
5641 | |
5642 | |
5643 | |
5644 | ExprResult |
5645 | Sema::SemaBuiltinAtomicOverloaded(ExprResult TheCallResult) { |
5646 | CallExpr *TheCall = static_cast<CallExpr *>(TheCallResult.get()); |
5647 | Expr *Callee = TheCall->getCallee(); |
5648 | DeclRefExpr *DRE = cast<DeclRefExpr>(Callee->IgnoreParenCasts()); |
5649 | FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl()); |
5650 | |
5651 | |
5652 | if (TheCall->getNumArgs() < 1) { |
5653 | Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least) |
5654 | << 0 << 1 << TheCall->getNumArgs() << Callee->getSourceRange(); |
5655 | return ExprError(); |
5656 | } |
5657 | |
5658 | |
5659 | |
5660 | |
5661 | |
5662 | |
5663 | Expr *FirstArg = TheCall->getArg(0); |
5664 | ExprResult FirstArgResult = DefaultFunctionArrayLvalueConversion(FirstArg); |
5665 | if (FirstArgResult.isInvalid()) |
5666 | return ExprError(); |
5667 | FirstArg = FirstArgResult.get(); |
5668 | TheCall->setArg(0, FirstArg); |
5669 | |
5670 | const PointerType *pointerType = FirstArg->getType()->getAs<PointerType>(); |
5671 | if (!pointerType) { |
5672 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer) |
5673 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5674 | return ExprError(); |
5675 | } |
5676 | |
5677 | QualType ValType = pointerType->getPointeeType(); |
5678 | if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && |
5679 | !ValType->isBlockPointerType()) { |
5680 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_must_be_pointer_intptr) |
5681 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5682 | return ExprError(); |
5683 | } |
5684 | |
5685 | if (ValType.isConstQualified()) { |
5686 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_cannot_be_const) |
5687 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5688 | return ExprError(); |
5689 | } |
5690 | |
5691 | switch (ValType.getObjCLifetime()) { |
5692 | case Qualifiers::OCL_None: |
5693 | case Qualifiers::OCL_ExplicitNone: |
5694 | |
5695 | break; |
5696 | |
5697 | case Qualifiers::OCL_Weak: |
5698 | case Qualifiers::OCL_Strong: |
5699 | case Qualifiers::OCL_Autoreleasing: |
5700 | Diag(DRE->getBeginLoc(), diag::err_arc_atomic_ownership) |
5701 | << ValType << FirstArg->getSourceRange(); |
5702 | return ExprError(); |
5703 | } |
5704 | |
5705 | |
5706 | ValType = ValType.getUnqualifiedType(); |
5707 | |
5708 | |
5709 | |
5710 | QualType ResultType = ValType; |
5711 | |
5712 | |
5713 | |
5714 | |
5715 | #define BUILTIN_ROW(x) \ |
5716 | { Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \ |
5717 | Builtin::BI##x##_8, Builtin::BI##x##_16 } |
5718 | |
5719 | static const unsigned BuiltinIndices[][5] = { |
5720 | BUILTIN_ROW(__sync_fetch_and_add), |
5721 | BUILTIN_ROW(__sync_fetch_and_sub), |
5722 | BUILTIN_ROW(__sync_fetch_and_or), |
5723 | BUILTIN_ROW(__sync_fetch_and_and), |
5724 | BUILTIN_ROW(__sync_fetch_and_xor), |
5725 | BUILTIN_ROW(__sync_fetch_and_nand), |
5726 | |
5727 | BUILTIN_ROW(__sync_add_and_fetch), |
5728 | BUILTIN_ROW(__sync_sub_and_fetch), |
5729 | BUILTIN_ROW(__sync_and_and_fetch), |
5730 | BUILTIN_ROW(__sync_or_and_fetch), |
5731 | BUILTIN_ROW(__sync_xor_and_fetch), |
5732 | BUILTIN_ROW(__sync_nand_and_fetch), |
5733 | |
5734 | BUILTIN_ROW(__sync_val_compare_and_swap), |
5735 | BUILTIN_ROW(__sync_bool_compare_and_swap), |
5736 | BUILTIN_ROW(__sync_lock_test_and_set), |
5737 | BUILTIN_ROW(__sync_lock_release), |
5738 | BUILTIN_ROW(__sync_swap) |
5739 | }; |
5740 | #undef BUILTIN_ROW |
5741 | |
5742 | |
5743 | unsigned SizeIndex; |
5744 | switch (Context.getTypeSizeInChars(ValType).getQuantity()) { |
5745 | case 1: SizeIndex = 0; break; |
5746 | case 2: SizeIndex = 1; break; |
5747 | case 4: SizeIndex = 2; break; |
5748 | case 8: SizeIndex = 3; break; |
5749 | case 16: SizeIndex = 4; break; |
5750 | default: |
5751 | Diag(DRE->getBeginLoc(), diag::err_atomic_builtin_pointer_size) |
5752 | << FirstArg->getType() << FirstArg->getSourceRange(); |
5753 | return ExprError(); |
5754 | } |
5755 | |
5756 | |
5757 | |
5758 | |
5759 | |
5760 | unsigned BuiltinID = FDecl->getBuiltinID(); |
5761 | unsigned BuiltinIndex, NumFixed = 1; |
5762 | bool WarnAboutSemanticsChange = false; |
5763 | switch (BuiltinID) { |
5764 | default: llvm_unreachable("Unknown overloaded atomic builtin!"); |
5765 | case Builtin::BI__sync_fetch_and_add: |
5766 | case Builtin::BI__sync_fetch_and_add_1: |
5767 | case Builtin::BI__sync_fetch_and_add_2: |
5768 | case Builtin::BI__sync_fetch_and_add_4: |
5769 | case Builtin::BI__sync_fetch_and_add_8: |
5770 | case Builtin::BI__sync_fetch_and_add_16: |
5771 | BuiltinIndex = 0; |
5772 | break; |
5773 | |
5774 | case Builtin::BI__sync_fetch_and_sub: |
5775 | case Builtin::BI__sync_fetch_and_sub_1: |
5776 | case Builtin::BI__sync_fetch_and_sub_2: |
5777 | case Builtin::BI__sync_fetch_and_sub_4: |
5778 | case Builtin::BI__sync_fetch_and_sub_8: |
5779 | case Builtin::BI__sync_fetch_and_sub_16: |
5780 | BuiltinIndex = 1; |
5781 | break; |
5782 | |
5783 | case Builtin::BI__sync_fetch_and_or: |
5784 | case Builtin::BI__sync_fetch_and_or_1: |
5785 | case Builtin::BI__sync_fetch_and_or_2: |
5786 | case Builtin::BI__sync_fetch_and_or_4: |
5787 | case Builtin::BI__sync_fetch_and_or_8: |
5788 | case Builtin::BI__sync_fetch_and_or_16: |
5789 | BuiltinIndex = 2; |
5790 | break; |
5791 | |
5792 | case Builtin::BI__sync_fetch_and_and: |
5793 | case Builtin::BI__sync_fetch_and_and_1: |
5794 | case Builtin::BI__sync_fetch_and_and_2: |
5795 | case Builtin::BI__sync_fetch_and_and_4: |
5796 | case Builtin::BI__sync_fetch_and_and_8: |
5797 | case Builtin::BI__sync_fetch_and_and_16: |
5798 | BuiltinIndex = 3; |
5799 | break; |
5800 | |
5801 | case Builtin::BI__sync_fetch_and_xor: |
5802 | case Builtin::BI__sync_fetch_and_xor_1: |
5803 | case Builtin::BI__sync_fetch_and_xor_2: |
5804 | case Builtin::BI__sync_fetch_and_xor_4: |
5805 | case Builtin::BI__sync_fetch_and_xor_8: |
5806 | case Builtin::BI__sync_fetch_and_xor_16: |
5807 | BuiltinIndex = 4; |
5808 | break; |
5809 | |
5810 | case Builtin::BI__sync_fetch_and_nand: |
5811 | case Builtin::BI__sync_fetch_and_nand_1: |
5812 | case Builtin::BI__sync_fetch_and_nand_2: |
5813 | case Builtin::BI__sync_fetch_and_nand_4: |
5814 | case Builtin::BI__sync_fetch_and_nand_8: |
5815 | case Builtin::BI__sync_fetch_and_nand_16: |
5816 | BuiltinIndex = 5; |
5817 | WarnAboutSemanticsChange = true; |
5818 | break; |
5819 | |
5820 | case Builtin::BI__sync_add_and_fetch: |
5821 | case Builtin::BI__sync_add_and_fetch_1: |
5822 | case Builtin::BI__sync_add_and_fetch_2: |
5823 | case Builtin::BI__sync_add_and_fetch_4: |
5824 | case Builtin::BI__sync_add_and_fetch_8: |
5825 | case Builtin::BI__sync_add_and_fetch_16: |
5826 | BuiltinIndex = 6; |
5827 | break; |
5828 | |
5829 | case Builtin::BI__sync_sub_and_fetch: |
5830 | case Builtin::BI__sync_sub_and_fetch_1: |
5831 | case Builtin::BI__sync_sub_and_fetch_2: |
5832 | case Builtin::BI__sync_sub_and_fetch_4: |
5833 | case Builtin::BI__sync_sub_and_fetch_8: |
5834 | case Builtin::BI__sync_sub_and_fetch_16: |
5835 | BuiltinIndex = 7; |
5836 | break; |
5837 | |
5838 | case Builtin::BI__sync_and_and_fetch: |
5839 | case Builtin::BI__sync_and_and_fetch_1: |
5840 | case Builtin::BI__sync_and_and_fetch_2: |
5841 | case Builtin::BI__sync_and_and_fetch_4: |
5842 | case Builtin::BI__sync_and_and_fetch_8: |
5843 | case Builtin::BI__sync_and_and_fetch_16: |
5844 | BuiltinIndex = 8; |
5845 | break; |
5846 | |
5847 | case Builtin::BI__sync_or_and_fetch: |
5848 | case Builtin::BI__sync_or_and_fetch_1: |
5849 | case Builtin::BI__sync_or_and_fetch_2: |
5850 | case Builtin::BI__sync_or_and_fetch_4: |
5851 | case Builtin::BI__sync_or_and_fetch_8: |
5852 | case Builtin::BI__sync_or_and_fetch_16: |
5853 | BuiltinIndex = 9; |
5854 | break; |
5855 | |
5856 | case Builtin::BI__sync_xor_and_fetch: |
5857 | case Builtin::BI__sync_xor_and_fetch_1: |
5858 | case Builtin::BI__sync_xor_and_fetch_2: |
5859 | case Builtin::BI__sync_xor_and_fetch_4: |
5860 | case Builtin::BI__sync_xor_and_fetch_8: |
5861 | case Builtin::BI__sync_xor_and_fetch_16: |
5862 | BuiltinIndex = 10; |
5863 | break; |
5864 | |
5865 | case Builtin::BI__sync_nand_and_fetch: |
5866 | case Builtin::BI__sync_nand_and_fetch_1: |
5867 | case Builtin::BI__sync_nand_and_fetch_2: |
5868 | case Builtin::BI__sync_nand_and_fetch_4: |
5869 | case Builtin::BI__sync_nand_and_fetch_8: |
5870 | case Builtin::BI__sync_nand_and_fetch_16: |
5871 | BuiltinIndex = 11; |
5872 | WarnAboutSemanticsChange = true; |
5873 | break; |
5874 | |
5875 | case Builtin::BI__sync_val_compare_and_swap: |
5876 | case Builtin::BI__sync_val_compare_and_swap_1: |
5877 | case Builtin::BI__sync_val_compare_and_swap_2: |
5878 | case Builtin::BI__sync_val_compare_and_swap_4: |
5879 | case Builtin::BI__sync_val_compare_and_swap_8: |
5880 | case Builtin::BI__sync_val_compare_and_swap_16: |
5881 | BuiltinIndex = 12; |
5882 | NumFixed = 2; |
5883 | break; |
5884 | |
5885 | case Builtin::BI__sync_bool_compare_and_swap: |
5886 | case Builtin::BI__sync_bool_compare_and_swap_1: |
5887 | case Builtin::BI__sync_bool_compare_and_swap_2: |
5888 | case Builtin::BI__sync_bool_compare_and_swap_4: |
5889 | case Builtin::BI__sync_bool_compare_and_swap_8: |
5890 | case Builtin::BI__sync_bool_compare_and_swap_16: |
5891 | BuiltinIndex = 13; |
5892 | NumFixed = 2; |
5893 | ResultType = Context.BoolTy; |
5894 | break; |
5895 | |
5896 | case Builtin::BI__sync_lock_test_and_set: |
5897 | case Builtin::BI__sync_lock_test_and_set_1: |
5898 | case Builtin::BI__sync_lock_test_and_set_2: |
5899 | case Builtin::BI__sync_lock_test_and_set_4: |
5900 | case Builtin::BI__sync_lock_test_and_set_8: |
5901 | case Builtin::BI__sync_lock_test_and_set_16: |
5902 | BuiltinIndex = 14; |
5903 | break; |
5904 | |
5905 | case Builtin::BI__sync_lock_release: |
5906 | case Builtin::BI__sync_lock_release_1: |
5907 | case Builtin::BI__sync_lock_release_2: |
5908 | case Builtin::BI__sync_lock_release_4: |
5909 | case Builtin::BI__sync_lock_release_8: |
5910 | case Builtin::BI__sync_lock_release_16: |
5911 | BuiltinIndex = 15; |
5912 | NumFixed = 0; |
5913 | ResultType = Context.VoidTy; |
5914 | break; |
5915 | |
5916 | case Builtin::BI__sync_swap: |
5917 | case Builtin::BI__sync_swap_1: |
5918 | case Builtin::BI__sync_swap_2: |
5919 | case Builtin::BI__sync_swap_4: |
5920 | case Builtin::BI__sync_swap_8: |
5921 | case Builtin::BI__sync_swap_16: |
5922 | BuiltinIndex = 16; |
5923 | break; |
5924 | } |
5925 | |
5926 | |
5927 | |
5928 | if (TheCall->getNumArgs() < 1+NumFixed) { |
5929 | Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args_at_least) |
5930 | << 0 << 1 + NumFixed << TheCall->getNumArgs() |
5931 | << Callee->getSourceRange(); |
5932 | return ExprError(); |
5933 | } |
5934 | |
5935 | Diag(TheCall->getEndLoc(), diag::warn_atomic_implicit_seq_cst) |
5936 | << Callee->getSourceRange(); |
5937 | |
5938 | if (WarnAboutSemanticsChange) { |
5939 | Diag(TheCall->getEndLoc(), diag::warn_sync_fetch_and_nand_semantics_change) |
5940 | << Callee->getSourceRange(); |
5941 | } |
5942 | |
5943 | |
5944 | |
5945 | unsigned NewBuiltinID = BuiltinIndices[BuiltinIndex][SizeIndex]; |
5946 | const char *NewBuiltinName = Context.BuiltinInfo.getName(NewBuiltinID); |
5947 | FunctionDecl *NewBuiltinDecl; |
5948 | if (NewBuiltinID == BuiltinID) |
5949 | NewBuiltinDecl = FDecl; |
5950 | else { |
5951 | |
5952 | DeclarationName DN(&Context.Idents.get(NewBuiltinName)); |
5953 | LookupResult Res(*this, DN, DRE->getBeginLoc(), LookupOrdinaryName); |
5954 | LookupName(Res, TUScope, true); |
5955 | assert(Res.getFoundDecl()); |
5956 | NewBuiltinDecl = dyn_cast<FunctionDecl>(Res.getFoundDecl()); |
5957 | if (!NewBuiltinDecl) |
5958 | return ExprError(); |
5959 | } |
5960 | |
5961 | |
5962 | |
5963 | |
5964 | for (unsigned i = 0; i != NumFixed; ++i) { |
5965 | ExprResult Arg = TheCall->getArg(i+1); |
5966 | |
5967 | |
5968 | |
5969 | |
5970 | InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, |
5971 | ValType, false); |
5972 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
5973 | if (Arg.isInvalid()) |
5974 | return ExprError(); |
5975 | |
5976 | |
5977 | |
5978 | |
5979 | |
5980 | |
5981 | |
5982 | TheCall->setArg(i+1, Arg.get()); |
5983 | } |
5984 | |
5985 | |
5986 | DeclRefExpr *NewDRE = DeclRefExpr::Create( |
5987 | Context, DRE->getQualifierLoc(), SourceLocation(), NewBuiltinDecl, |
5988 | false, DRE->getLocation(), Context.BuiltinFnTy, |
5989 | DRE->getValueKind(), nullptr, nullptr, DRE->isNonOdrUse()); |
5990 | |
5991 | |
5992 | |
5993 | QualType CalleePtrTy = Context.getPointerType(NewBuiltinDecl->getType()); |
5994 | ExprResult PromotedCall = ImpCastExprToType(NewDRE, CalleePtrTy, |
5995 | CK_BuiltinFnToFnPtr); |
5996 | TheCall->setCallee(PromotedCall.get()); |
5997 | |
5998 | |
5999 | |
6000 | |
6001 | TheCall->setType(ResultType); |
6002 | |
6003 | |
6004 | |
6005 | |
6006 | const auto *ExtIntValType = ValType->getAs<ExtIntType>(); |
6007 | if (ExtIntValType && !llvm::isPowerOf2_64(ExtIntValType->getNumBits())) { |
6008 | Diag(FirstArg->getExprLoc(), diag::err_atomic_builtin_ext_int_size); |
6009 | return ExprError(); |
6010 | } |
6011 | |
6012 | return TheCallResult; |
6013 | } |
6014 | |
6015 | |
6016 | |
6017 | |
6018 | |
6019 | |
6020 | |
6021 | ExprResult Sema::SemaBuiltinNontemporalOverloaded(ExprResult TheCallResult) { |
6022 | CallExpr *TheCall = (CallExpr *)TheCallResult.get(); |
6023 | DeclRefExpr *DRE = |
6024 | cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
6025 | FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl()); |
6026 | unsigned BuiltinID = FDecl->getBuiltinID(); |
6027 | assert((BuiltinID == Builtin::BI__builtin_nontemporal_store || |
6028 | BuiltinID == Builtin::BI__builtin_nontemporal_load) && |
6029 | "Unexpected nontemporal load/store builtin!"); |
6030 | bool isStore = BuiltinID == Builtin::BI__builtin_nontemporal_store; |
6031 | unsigned numArgs = isStore ? 2 : 1; |
6032 | |
6033 | |
6034 | if (checkArgCount(*this, TheCall, numArgs)) |
6035 | return ExprError(); |
6036 | |
6037 | |
6038 | |
6039 | |
6040 | |
6041 | Expr *PointerArg = TheCall->getArg(numArgs - 1); |
6042 | ExprResult PointerArgResult = |
6043 | DefaultFunctionArrayLvalueConversion(PointerArg); |
6044 | |
6045 | if (PointerArgResult.isInvalid()) |
6046 | return ExprError(); |
6047 | PointerArg = PointerArgResult.get(); |
6048 | TheCall->setArg(numArgs - 1, PointerArg); |
6049 | |
6050 | const PointerType *pointerType = PointerArg->getType()->getAs<PointerType>(); |
6051 | if (!pointerType) { |
6052 | Diag(DRE->getBeginLoc(), diag::err_nontemporal_builtin_must_be_pointer) |
6053 | << PointerArg->getType() << PointerArg->getSourceRange(); |
6054 | return ExprError(); |
6055 | } |
6056 | |
6057 | QualType ValType = pointerType->getPointeeType(); |
6058 | |
6059 | |
6060 | ValType = ValType.getUnqualifiedType(); |
6061 | if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && |
6062 | !ValType->isBlockPointerType() && !ValType->isFloatingType() && |
6063 | !ValType->isVectorType()) { |
6064 | Diag(DRE->getBeginLoc(), |
6065 | diag::err_nontemporal_builtin_must_be_pointer_intfltptr_or_vector) |
6066 | << PointerArg->getType() << PointerArg->getSourceRange(); |
6067 | return ExprError(); |
6068 | } |
6069 | |
6070 | if (!isStore) { |
6071 | TheCall->setType(ValType); |
6072 | return TheCallResult; |
6073 | } |
6074 | |
6075 | ExprResult ValArg = TheCall->getArg(0); |
6076 | InitializedEntity Entity = InitializedEntity::InitializeParameter( |
6077 | Context, ValType, false); |
6078 | ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); |
6079 | if (ValArg.isInvalid()) |
6080 | return ExprError(); |
6081 | |
6082 | TheCall->setArg(0, ValArg.get()); |
6083 | TheCall->setType(Context.VoidTy); |
6084 | return TheCallResult; |
6085 | } |
6086 | |
6087 | |
6088 | |
6089 | |
6090 | |
6091 | bool Sema::CheckObjCString(Expr *Arg) { |
6092 | Arg = Arg->IgnoreParenCasts(); |
6093 | StringLiteral *Literal = dyn_cast<StringLiteral>(Arg); |
6094 | |
6095 | if (!Literal || !Literal->isAscii()) { |
6096 | Diag(Arg->getBeginLoc(), diag::err_cfstring_literal_not_string_constant) |
6097 | << Arg->getSourceRange(); |
6098 | return true; |
6099 | } |
6100 | |
6101 | if (Literal->containsNonAsciiOrNull()) { |
6102 | StringRef String = Literal->getString(); |
6103 | unsigned NumBytes = String.size(); |
6104 | SmallVector<llvm::UTF16, 128> ToBuf(NumBytes); |
6105 | const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data(); |
6106 | llvm::UTF16 *ToPtr = &ToBuf[0]; |
6107 | |
6108 | llvm::ConversionResult Result = |
6109 | llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, |
6110 | ToPtr + NumBytes, llvm::strictConversion); |
6111 | |
6112 | if (Result != llvm::conversionOK) |
6113 | Diag(Arg->getBeginLoc(), diag::warn_cfstring_truncated) |
6114 | << Arg->getSourceRange(); |
6115 | } |
6116 | return false; |
6117 | } |
6118 | |
6119 | |
6120 | |
6121 | ExprResult Sema::CheckOSLogFormatStringArg(Expr *Arg) { |
6122 | Arg = Arg->IgnoreParenCasts(); |
6123 | auto *Literal = dyn_cast<StringLiteral>(Arg); |
6124 | if (!Literal) { |
6125 | if (auto *ObjcLiteral = dyn_cast<ObjCStringLiteral>(Arg)) { |
6126 | Literal = ObjcLiteral->getString(); |
6127 | } |
6128 | } |
6129 | |
6130 | if (!Literal || (!Literal->isAscii() && !Literal->isUTF8())) { |
6131 | return ExprError( |
6132 | Diag(Arg->getBeginLoc(), diag::err_os_log_format_not_string_constant) |
6133 | << Arg->getSourceRange()); |
6134 | } |
6135 | |
6136 | ExprResult Result(Literal); |
6137 | QualType ResultTy = Context.getPointerType(Context.CharTy.withConst()); |
6138 | InitializedEntity Entity = |
6139 | InitializedEntity::InitializeParameter(Context, ResultTy, false); |
6140 | Result = PerformCopyInitialization(Entity, SourceLocation(), Result); |
6141 | return Result; |
6142 | } |
6143 | |
6144 | |
6145 | |
6146 | static bool checkVAStartABI(Sema &S, unsigned BuiltinID, Expr *Fn) { |
6147 | const llvm::Triple &TT = S.Context.getTargetInfo().getTriple(); |
6148 | bool IsX64 = TT.getArch() == llvm::Triple::x86_64; |
6149 | bool IsAArch64 = (TT.getArch() == llvm::Triple::aarch64 || |
6150 | TT.getArch() == llvm::Triple::aarch64_32); |
6151 | bool IsWindows = TT.isOSWindows(); |
6152 | bool IsMSVAStart = BuiltinID == Builtin::BI__builtin_ms_va_start; |
6153 | if (IsX64 || IsAArch64) { |
6154 | CallingConv CC = CC_C; |
6155 | if (const FunctionDecl *FD = S.getCurFunctionDecl()) |
6156 | CC = FD->getType()->castAs<FunctionType>()->getCallConv(); |
6157 | if (IsMSVAStart) { |
6158 | |
6159 | if (CC == CC_X86_64SysV || (!IsWindows && CC != CC_Win64)) |
6160 | return S.Diag(Fn->getBeginLoc(), |
6161 | diag::err_ms_va_start_used_in_sysv_function); |
6162 | } else { |
6163 | |
6164 | |
6165 | |
6166 | |
6167 | if ((IsWindows && CC == CC_X86_64SysV) || |
6168 | (!IsWindows && CC == CC_Win64)) |
6169 | return S.Diag(Fn->getBeginLoc(), |
6170 | diag::err_va_start_used_in_wrong_abi_function) |
6171 | << !IsWindows; |
6172 | } |
6173 | return false; |
6174 | } |
6175 | |
6176 | if (IsMSVAStart) |
6177 | return S.Diag(Fn->getBeginLoc(), diag::err_builtin_x64_aarch64_only); |
6178 | return false; |
6179 | } |
6180 | |
6181 | static bool checkVAStartIsInVariadicFunction(Sema &S, Expr *Fn, |
6182 | ParmVarDecl **LastParam = nullptr) { |
6183 | |
6184 | |
6185 | bool IsVariadic = false; |
6186 | ArrayRef<ParmVarDecl *> Params; |
6187 | DeclContext *Caller = S.CurContext; |
6188 | if (auto *Block = dyn_cast<BlockDecl>(Caller)) { |
6189 | IsVariadic = Block->isVariadic(); |
6190 | Params = Block->parameters(); |
6191 | } else if (auto *FD = dyn_cast<FunctionDecl>(Caller)) { |
6192 | IsVariadic = FD->isVariadic(); |
6193 | Params = FD->parameters(); |
6194 | } else if (auto *MD = dyn_cast<ObjCMethodDecl>(Caller)) { |
6195 | IsVariadic = MD->isVariadic(); |
6196 | |
6197 | Params = MD->parameters(); |
6198 | } else if (isa<CapturedDecl>(Caller)) { |
6199 | |
6200 | S.Diag(Fn->getBeginLoc(), diag::err_va_start_captured_stmt); |
6201 | return true; |
6202 | } else { |
6203 | |
6204 | S.Diag(Fn->getBeginLoc(), diag::err_va_start_outside_function); |
6205 | return true; |
6206 | } |
6207 | |
6208 | if (!IsVariadic) { |
6209 | S.Diag(Fn->getBeginLoc(), diag::err_va_start_fixed_function); |
6210 | return true; |
6211 | } |
6212 | |
6213 | if (LastParam) |
6214 | *LastParam = Params.empty() ? nullptr : Params.back(); |
6215 | |
6216 | return false; |
6217 | } |
6218 | |
6219 | |
6220 | |
6221 | |
6222 | bool Sema::SemaBuiltinVAStart(unsigned BuiltinID, CallExpr *TheCall) { |
6223 | Expr *Fn = TheCall->getCallee(); |
6224 | |
6225 | if (checkVAStartABI(*this, BuiltinID, Fn)) |
6226 | return true; |
6227 | |
6228 | if (checkArgCount(*this, TheCall, 2)) |
6229 | return true; |
6230 | |
6231 | |
6232 | if (checkBuiltinArgument(*this, TheCall, 0)) |
6233 | return true; |
6234 | |
6235 | |
6236 | ParmVarDecl *LastParam; |
6237 | if (checkVAStartIsInVariadicFunction(*this, Fn, &LastParam)) |
6238 | return true; |
6239 | |
6240 | |
6241 | |
6242 | bool SecondArgIsLastNamedArgument = false; |
6243 | const Expr *Arg = TheCall->getArg(1)->IgnoreParenCasts(); |
6244 | |
6245 | |
6246 | |
6247 | QualType Type; |
6248 | SourceLocation ParamLoc; |
6249 | bool IsCRegister = false; |
6250 | |
6251 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Arg)) { |
6252 | if (const ParmVarDecl *PV = dyn_cast<ParmVarDecl>(DR->getDecl())) { |
6253 | SecondArgIsLastNamedArgument = PV == LastParam; |
6254 | |
6255 | Type = PV->getType(); |
6256 | ParamLoc = PV->getLocation(); |
6257 | IsCRegister = |
6258 | PV->getStorageClass() == SC_Register && !getLangOpts().CPlusPlus; |
6259 | } |
6260 | } |
6261 | |
6262 | if (!SecondArgIsLastNamedArgument) |
6263 | Diag(TheCall->getArg(1)->getBeginLoc(), |
6264 | diag::warn_second_arg_of_va_start_not_last_named_param); |
6265 | else if (IsCRegister || Type->isReferenceType() || |
6266 | Type->isSpecificBuiltinType(BuiltinType::Float) || [=] { |
6267 | |
6268 | |
6269 | if (!Type->isPromotableIntegerType()) |
6270 | return false; |
6271 | if (!Type->isEnumeralType()) |
6272 | return true; |
6273 | const EnumDecl *ED = Type->castAs<EnumType>()->getDecl(); |
6274 | return !(ED && |
6275 | Context.typesAreCompatible(ED->getPromotionType(), Type)); |
6276 | }()) { |
6277 | unsigned Reason = 0; |
6278 | if (Type->isReferenceType()) Reason = 1; |
6279 | else if (IsCRegister) Reason = 2; |
6280 | Diag(Arg->getBeginLoc(), diag::warn_va_start_type_is_undefined) << Reason; |
6281 | Diag(ParamLoc, diag::note_parameter_type) << Type; |
6282 | } |
6283 | |
6284 | TheCall->setType(Context.VoidTy); |
6285 | return false; |
6286 | } |
6287 | |
6288 | bool Sema::SemaBuiltinVAStartARMMicrosoft(CallExpr *Call) { |
6289 | |
6290 | |
6291 | |
6292 | Expr *Func = Call->getCallee(); |
6293 | |
6294 | if (Call->getNumArgs() < 3) |
6295 | return Diag(Call->getEndLoc(), |
6296 | diag::err_typecheck_call_too_few_args_at_least) |
6297 | << 0 << 3 << Call->getNumArgs(); |
6298 | |
6299 | |
6300 | if (checkBuiltinArgument(*this, Call, 0)) |
6301 | return true; |
6302 | |
6303 | |
6304 | if (checkVAStartIsInVariadicFunction(*this, Func)) |
6305 | return true; |
6306 | |
6307 | |
6308 | |
6309 | const Expr *Arg1 = Call->getArg(1)->IgnoreParens(); |
6310 | const Type *Arg1Ty = Arg1->getType().getCanonicalType().getTypePtr(); |
6311 | |
6312 | const Expr *Arg2 = Call->getArg(2)->IgnoreParens(); |
6313 | const Type *Arg2Ty = Arg2->getType().getCanonicalType().getTypePtr(); |
6314 | |
6315 | const QualType &ConstCharPtrTy = |
6316 | Context.getPointerType(Context.CharTy.withConst()); |
6317 | if (!Arg1Ty->isPointerType() || |
6318 | Arg1Ty->getPointeeType().withoutLocalFastQualifiers() != Context.CharTy) |
6319 | Diag(Arg1->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
6320 | << Arg1->getType() << ConstCharPtrTy << 1 |
6321 | << 0 |
6322 | << 3 |
6323 | << 2 << Arg1->getType() << ConstCharPtrTy; |
6324 | |
6325 | const QualType SizeTy = Context.getSizeType(); |
6326 | if (Arg2Ty->getCanonicalTypeInternal().withoutLocalFastQualifiers() != SizeTy) |
6327 | Diag(Arg2->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
6328 | << Arg2->getType() << SizeTy << 1 |
6329 | << 0 |
6330 | << 3 |
6331 | << 3 << Arg2->getType() << SizeTy; |
6332 | |
6333 | return false; |
6334 | } |
6335 | |
6336 | |
6337 | |
6338 | bool Sema::SemaBuiltinUnorderedCompare(CallExpr *TheCall) { |
6339 | if (checkArgCount(*this, TheCall, 2)) |
6340 | return true; |
6341 | |
6342 | ExprResult OrigArg0 = TheCall->getArg(0); |
6343 | ExprResult OrigArg1 = TheCall->getArg(1); |
6344 | |
6345 | |
6346 | |
6347 | QualType Res = UsualArithmeticConversions( |
6348 | OrigArg0, OrigArg1, TheCall->getExprLoc(), ACK_Comparison); |
6349 | if (OrigArg0.isInvalid() || OrigArg1.isInvalid()) |
6350 | return true; |
6351 | |
6352 | |
6353 | |
6354 | |
6355 | TheCall->setArg(0, OrigArg0.get()); |
6356 | TheCall->setArg(1, OrigArg1.get()); |
6357 | |
6358 | if (OrigArg0.get()->isTypeDependent() || OrigArg1.get()->isTypeDependent()) |
6359 | return false; |
6360 | |
6361 | |
6362 | |
6363 | if (Res.isNull() || !Res->isRealFloatingType()) |
6364 | return Diag(OrigArg0.get()->getBeginLoc(), |
6365 | diag::err_typecheck_call_invalid_ordered_compare) |
6366 | << OrigArg0.get()->getType() << OrigArg1.get()->getType() |
6367 | << SourceRange(OrigArg0.get()->getBeginLoc(), |
6368 | OrigArg1.get()->getEndLoc()); |
6369 | |
6370 | return false; |
6371 | } |
6372 | |
6373 | |
6374 | |
6375 | |
6376 | |
6377 | bool Sema::SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs) { |
6378 | if (checkArgCount(*this, TheCall, NumArgs)) |
6379 | return true; |
6380 | |
6381 | |
6382 | |
6383 | for (unsigned i = 0; i < NumArgs - 1; ++i) { |
6384 | Expr *Arg = TheCall->getArg(i); |
6385 | |
6386 | if (Arg->isTypeDependent()) |
6387 | return false; |
6388 | |
6389 | ExprResult Res = PerformImplicitConversion(Arg, Context.IntTy, AA_Passing); |
6390 | |
6391 | if (Res.isInvalid()) |
6392 | return true; |
6393 | TheCall->setArg(i, Res.get()); |
6394 | } |
6395 | |
6396 | Expr *OrigArg = TheCall->getArg(NumArgs-1); |
6397 | |
6398 | if (OrigArg->isTypeDependent()) |
6399 | return false; |
6400 | |
6401 | |
6402 | |
6403 | |
6404 | if (Context.getTargetInfo().useFP16ConversionIntrinsics()) |
6405 | OrigArg = UsualUnaryConversions(OrigArg).get(); |
6406 | else |
6407 | OrigArg = DefaultFunctionArrayLvalueConversion(OrigArg).get(); |
6408 | TheCall->setArg(NumArgs - 1, OrigArg); |
6409 | |
6410 | |
6411 | if (!OrigArg->getType()->isRealFloatingType()) |
6412 | return Diag(OrigArg->getBeginLoc(), |
6413 | diag::err_typecheck_call_invalid_unary_fp) |
6414 | << OrigArg->getType() << OrigArg->getSourceRange(); |
6415 | |
6416 | return false; |
6417 | } |
6418 | |
6419 | |
6420 | bool Sema::SemaBuiltinComplex(CallExpr *TheCall) { |
6421 | if (checkArgCount(*this, TheCall, 2)) |
6422 | return true; |
6423 | |
6424 | bool Dependent = false; |
6425 | for (unsigned I = 0; I != 2; ++I) { |
6426 | Expr *Arg = TheCall->getArg(I); |
6427 | QualType T = Arg->getType(); |
6428 | if (T->isDependentType()) { |
6429 | Dependent = true; |
6430 | continue; |
6431 | } |
6432 | |
6433 | |
6434 | |
6435 | if (!T->isRealFloatingType()) { |
6436 | return Diag(Arg->getBeginLoc(), diag::err_typecheck_call_requires_real_fp) |
6437 | << Arg->getType() << Arg->getSourceRange(); |
6438 | } |
6439 | |
6440 | ExprResult Converted = DefaultLvalueConversion(Arg); |
6441 | if (Converted.isInvalid()) |
6442 | return true; |
6443 | TheCall->setArg(I, Converted.get()); |
6444 | } |
6445 | |
6446 | if (Dependent) { |
6447 | TheCall->setType(Context.DependentTy); |
6448 | return false; |
6449 | } |
6450 | |
6451 | Expr *Real = TheCall->getArg(0); |
6452 | Expr *Imag = TheCall->getArg(1); |
6453 | if (!Context.hasSameType(Real->getType(), Imag->getType())) { |
6454 | return Diag(Real->getBeginLoc(), |
6455 | diag::err_typecheck_call_different_arg_types) |
6456 | << Real->getType() << Imag->getType() |
6457 | << Real->getSourceRange() << Imag->getSourceRange(); |
6458 | } |
6459 | |
6460 | |
6461 | |
6462 | |
6463 | if (Real->getType()->isFloat16Type()) |
6464 | return Diag(TheCall->getBeginLoc(), diag::err_invalid_complex_spec) |
6465 | << "_Float16"; |
6466 | if (Real->getType()->isHalfType()) |
6467 | return Diag(TheCall->getBeginLoc(), diag::err_invalid_complex_spec) |
6468 | << "half"; |
6469 | |
6470 | TheCall->setType(Context.getComplexType(Real->getType())); |
6471 | return false; |
6472 | } |
6473 | |
6474 | |
6475 | |
6476 | |
6477 | |
6478 | |
6479 | |
6480 | |
6481 | bool Sema::SemaBuiltinVSX(CallExpr *TheCall) { |
6482 | unsigned ExpectedNumArgs = 3; |
6483 | if (checkArgCount(*this, TheCall, ExpectedNumArgs)) |
6484 | return true; |
6485 | |
6486 | |
6487 | if (!TheCall->getArg(2)->isIntegerConstantExpr(Context)) |
6488 | return Diag(TheCall->getBeginLoc(), |
6489 | diag::err_vsx_builtin_nonconstant_argument) |
6490 | << 3 << TheCall->getDirectCallee() |
6491 | << SourceRange(TheCall->getArg(2)->getBeginLoc(), |
6492 | TheCall->getArg(2)->getEndLoc()); |
6493 | |
6494 | QualType Arg1Ty = TheCall->getArg(0)->getType(); |
6495 | QualType Arg2Ty = TheCall->getArg(1)->getType(); |
6496 | |
6497 | |
6498 | SourceLocation BuiltinLoc = TheCall->getBeginLoc(); |
6499 | if ((!Arg1Ty->isVectorType() && !Arg1Ty->isDependentType()) || |
6500 | (!Arg2Ty->isVectorType() && !Arg2Ty->isDependentType())) { |
6501 | return Diag(BuiltinLoc, diag::err_vec_builtin_non_vector) |
6502 | << TheCall->getDirectCallee() |
6503 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6504 | TheCall->getArg(1)->getEndLoc()); |
6505 | } |
6506 | |
6507 | |
6508 | if (!Context.hasSameUnqualifiedType(Arg1Ty, Arg2Ty)) { |
6509 | return Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_vector) |
6510 | << TheCall->getDirectCallee() |
6511 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6512 | TheCall->getArg(1)->getEndLoc()); |
6513 | } |
6514 | |
6515 | |
6516 | |
6517 | |
6518 | TheCall->setType(Arg1Ty); |
6519 | |
6520 | return false; |
6521 | } |
6522 | |
6523 | |
6524 | |
6525 | ExprResult Sema::SemaBuiltinShuffleVector(CallExpr *TheCall) { |
6526 | if (TheCall->getNumArgs() < 2) |
6527 | return ExprError(Diag(TheCall->getEndLoc(), |
6528 | diag::err_typecheck_call_too_few_args_at_least) |
6529 | << 0 << 2 << TheCall->getNumArgs() |
6530 | << TheCall->getSourceRange()); |
6531 | |
6532 | |
6533 | |
6534 | |
6535 | QualType resType = TheCall->getArg(0)->getType(); |
6536 | unsigned numElements = 0; |
6537 | |
6538 | if (!TheCall->getArg(0)->isTypeDependent() && |
6539 | !TheCall->getArg(1)->isTypeDependent()) { |
6540 | QualType LHSType = TheCall->getArg(0)->getType(); |
6541 | QualType RHSType = TheCall->getArg(1)->getType(); |
6542 | |
6543 | if (!LHSType->isVectorType() || !RHSType->isVectorType()) |
6544 | return ExprError( |
6545 | Diag(TheCall->getBeginLoc(), diag::err_vec_builtin_non_vector) |
6546 | << TheCall->getDirectCallee() |
6547 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6548 | TheCall->getArg(1)->getEndLoc())); |
6549 | |
6550 | numElements = LHSType->castAs<VectorType>()->getNumElements(); |
6551 | unsigned numResElements = TheCall->getNumArgs() - 2; |
6552 | |
6553 | |
6554 | |
6555 | |
6556 | if (TheCall->getNumArgs() == 2) { |
6557 | if (!RHSType->hasIntegerRepresentation() || |
6558 | RHSType->castAs<VectorType>()->getNumElements() != numElements) |
6559 | return ExprError(Diag(TheCall->getBeginLoc(), |
6560 | diag::err_vec_builtin_incompatible_vector) |
6561 | << TheCall->getDirectCallee() |
6562 | << SourceRange(TheCall->getArg(1)->getBeginLoc(), |
6563 | TheCall->getArg(1)->getEndLoc())); |
6564 | } else if (!Context.hasSameUnqualifiedType(LHSType, RHSType)) { |
6565 | return ExprError(Diag(TheCall->getBeginLoc(), |
6566 | diag::err_vec_builtin_incompatible_vector) |
6567 | << TheCall->getDirectCallee() |
6568 | << SourceRange(TheCall->getArg(0)->getBeginLoc(), |
6569 | TheCall->getArg(1)->getEndLoc())); |
6570 | } else if (numElements != numResElements) { |
6571 | QualType eltType = LHSType->castAs<VectorType>()->getElementType(); |
6572 | resType = Context.getVectorType(eltType, numResElements, |
6573 | VectorType::GenericVector); |
6574 | } |
6575 | } |
6576 | |
6577 | for (unsigned i = 2; i < TheCall->getNumArgs(); i++) { |
6578 | if (TheCall->getArg(i)->isTypeDependent() || |
6579 | TheCall->getArg(i)->isValueDependent()) |
6580 | continue; |
6581 | |
6582 | Optional<llvm::APSInt> Result; |
6583 | if (!(Result = TheCall->getArg(i)->getIntegerConstantExpr(Context))) |
6584 | return ExprError(Diag(TheCall->getBeginLoc(), |
6585 | diag::err_shufflevector_nonconstant_argument) |
6586 | << TheCall->getArg(i)->getSourceRange()); |
6587 | |
6588 | |
6589 | if (Result->isSigned() && Result->isAllOnesValue()) |
6590 | continue; |
6591 | |
6592 | if (Result->getActiveBits() > 64 || |
6593 | Result->getZExtValue() >= numElements * 2) |
6594 | return ExprError(Diag(TheCall->getBeginLoc(), |
6595 | diag::err_shufflevector_argument_too_large) |
6596 | << TheCall->getArg(i)->getSourceRange()); |
6597 | } |
6598 | |
6599 | SmallVector<Expr*, 32> exprs; |
6600 | |
6601 | for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; i++) { |
6602 | exprs.push_back(TheCall->getArg(i)); |
6603 | TheCall->setArg(i, nullptr); |
6604 | } |
6605 | |
6606 | return new (Context) ShuffleVectorExpr(Context, exprs, resType, |
6607 | TheCall->getCallee()->getBeginLoc(), |
6608 | TheCall->getRParenLoc()); |
6609 | } |
6610 | |
6611 | |
6612 | ExprResult Sema::SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, |
6613 | SourceLocation BuiltinLoc, |
6614 | SourceLocation RParenLoc) { |
6615 | ExprValueKind VK = VK_PRValue; |
6616 | ExprObjectKind OK = OK_Ordinary; |
6617 | QualType DstTy = TInfo->getType(); |
6618 | QualType SrcTy = E->getType(); |
6619 | |
6620 | if (!SrcTy->isVectorType() && !SrcTy->isDependentType()) |
6621 | return ExprError(Diag(BuiltinLoc, |
6622 | diag::err_convertvector_non_vector) |
6623 | << E->getSourceRange()); |
6624 | if (!DstTy->isVectorType() && !DstTy->isDependentType()) |
6625 | return ExprError(Diag(BuiltinLoc, |
6626 | diag::err_convertvector_non_vector_type)); |
6627 | |
6628 | if (!SrcTy->isDependentType() && !DstTy->isDependentType()) { |
6629 | unsigned SrcElts = SrcTy->castAs<VectorType>()->getNumElements(); |
6630 | unsigned DstElts = DstTy->castAs<VectorType>()->getNumElements(); |
6631 | if (SrcElts != DstElts) |
6632 | return ExprError(Diag(BuiltinLoc, |
6633 | diag::err_convertvector_incompatible_vector) |
6634 | << E->getSourceRange()); |
6635 | } |
6636 | |
6637 | return new (Context) |
6638 | ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc); |
6639 | } |
6640 | |
6641 | |
6642 | |
6643 | |
6644 | bool Sema::SemaBuiltinPrefetch(CallExpr *TheCall) { |
6645 | unsigned NumArgs = TheCall->getNumArgs(); |
6646 | |
6647 | if (NumArgs > 3) |
6648 | return Diag(TheCall->getEndLoc(), |
6649 | diag::err_typecheck_call_too_many_args_at_most) |
6650 | << 0 << 3 << NumArgs << TheCall->getSourceRange(); |
6651 | |
6652 | |
6653 | |
6654 | for (unsigned i = 1; i != NumArgs; ++i) |
6655 | if (SemaBuiltinConstantArgRange(TheCall, i, 0, i == 1 ? 1 : 3)) |
6656 | return true; |
6657 | |
6658 | return false; |
6659 | } |
6660 | |
6661 | |
6662 | bool Sema::SemaBuiltinArithmeticFence(CallExpr *TheCall) { |
6663 | if (!Context.getTargetInfo().checkArithmeticFenceSupported()) |
6664 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_target_unsupported) |
6665 | << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc()); |
6666 | if (checkArgCount(*this, TheCall, 1)) |
6667 | return true; |
6668 | Expr *Arg = TheCall->getArg(0); |
6669 | if (Arg->isInstantiationDependent()) |
6670 | return false; |
6671 | |
6672 | QualType ArgTy = Arg->getType(); |
6673 | if (!ArgTy->hasFloatingRepresentation()) |
6674 | return Diag(TheCall->getEndLoc(), diag::err_typecheck_expect_flt_or_vector) |
6675 | << ArgTy; |
6676 | if (Arg->isLValue()) { |
6677 | ExprResult FirstArg = DefaultLvalueConversion(Arg); |
6678 | TheCall->setArg(0, FirstArg.get()); |
6679 | } |
6680 | TheCall->setType(TheCall->getArg(0)->getType()); |
6681 | return false; |
6682 | } |
6683 | |
6684 | |
6685 | |
6686 | |
6687 | bool Sema::SemaBuiltinAssume(CallExpr *TheCall) { |
6688 | Expr *Arg = TheCall->getArg(0); |
6689 | if (Arg->isInstantiationDependent()) return false; |
6690 | |
6691 | if (Arg->HasSideEffects(Context)) |
6692 | Diag(Arg->getBeginLoc(), diag::warn_assume_side_effects) |
6693 | << Arg->getSourceRange() |
6694 | << cast<FunctionDecl>(TheCall->getCalleeDecl())->getIdentifier(); |
6695 | |
6696 | return false; |
6697 | } |
6698 | |
6699 | |
6700 | |
6701 | |
6702 | bool Sema::SemaBuiltinAllocaWithAlign(CallExpr *TheCall) { |
6703 | |
6704 | Expr *Arg = TheCall->getArg(1); |
6705 | |
6706 | |
6707 | if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { |
6708 | if (const auto *UE = |
6709 | dyn_cast<UnaryExprOrTypeTraitExpr>(Arg->IgnoreParenImpCasts())) |
6710 | if (UE->getKind() == UETT_AlignOf || |
6711 | UE->getKind() == UETT_PreferredAlignOf) |
6712 | Diag(TheCall->getBeginLoc(), diag::warn_alloca_align_alignof) |
6713 | << Arg->getSourceRange(); |
6714 | |
6715 | llvm::APSInt Result = Arg->EvaluateKnownConstInt(Context); |
6716 | |
6717 | if (!Result.isPowerOf2()) |
6718 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_not_power_of_two) |
6719 | << Arg->getSourceRange(); |
6720 | |
6721 | if (Result < Context.getCharWidth()) |
6722 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_too_small) |
6723 | << (unsigned)Context.getCharWidth() << Arg->getSourceRange(); |
6724 | |
6725 | if (Result > std::numeric_limits<int32_t>::max()) |
6726 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_too_big) |
6727 | << std::numeric_limits<int32_t>::max() << Arg->getSourceRange(); |
6728 | } |
6729 | |
6730 | return false; |
6731 | } |
6732 | |
6733 | |
6734 | |
6735 | bool Sema::SemaBuiltinAssumeAligned(CallExpr *TheCall) { |
6736 | unsigned NumArgs = TheCall->getNumArgs(); |
6737 | |
6738 | if (NumArgs > 3) |
6739 | return Diag(TheCall->getEndLoc(), |
6740 | diag::err_typecheck_call_too_many_args_at_most) |
6741 | << 0 << 3 << NumArgs << TheCall->getSourceRange(); |
6742 | |
6743 | |
6744 | Expr *Arg = TheCall->getArg(1); |
6745 | |
6746 | |
6747 | if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { |
6748 | llvm::APSInt Result; |
6749 | if (SemaBuiltinConstantArg(TheCall, 1, Result)) |
6750 | return true; |
6751 | |
6752 | if (!Result.isPowerOf2()) |
6753 | return Diag(TheCall->getBeginLoc(), diag::err_alignment_not_power_of_two) |
6754 | << Arg->getSourceRange(); |
6755 | |
6756 | if (Result > Sema::MaximumAlignment) |
6757 | Diag(TheCall->getBeginLoc(), diag::warn_assume_aligned_too_great) |
6758 | << Arg->getSourceRange() << Sema::MaximumAlignment; |
6759 | } |
6760 | |
6761 | if (NumArgs > 2) { |
6762 | ExprResult Arg(TheCall->getArg(2)); |
6763 | InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, |
6764 | Context.getSizeType(), false); |
6765 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
6766 | if (Arg.isInvalid()) return true; |
6767 | TheCall->setArg(2, Arg.get()); |
6768 | } |
6769 | |
6770 | return false; |
6771 | } |
6772 | |
6773 | bool Sema::SemaBuiltinOSLogFormat(CallExpr *TheCall) { |
6774 | unsigned BuiltinID = |
6775 | cast<FunctionDecl>(TheCall->getCalleeDecl())->getBuiltinID(); |
6776 | bool IsSizeCall = BuiltinID == Builtin::BI__builtin_os_log_format_buffer_size; |
6777 | |
6778 | unsigned NumArgs = TheCall->getNumArgs(); |
6779 | unsigned NumRequiredArgs = IsSizeCall ? 1 : 2; |
6780 | if (NumArgs < NumRequiredArgs) { |
6781 | return Diag(TheCall->getEndLoc(), diag::err_typecheck_call_too_few_args) |
6782 | << 0 << NumRequiredArgs << NumArgs |
6783 | << TheCall->getSourceRange(); |
6784 | } |
6785 | if (NumArgs >= NumRequiredArgs + 0x100) { |
6786 | return Diag(TheCall->getEndLoc(), |
6787 | diag::err_typecheck_call_too_many_args_at_most) |
6788 | << 0 << (NumRequiredArgs + 0xff) << NumArgs |
6789 | << TheCall->getSourceRange(); |
6790 | } |
6791 | unsigned i = 0; |
6792 | |
6793 | |
6794 | if (!IsSizeCall) { |
6795 | ExprResult Arg(TheCall->getArg(i)); |
6796 | InitializedEntity Entity = InitializedEntity::InitializeParameter( |
6797 | Context, Context.VoidPtrTy, false); |
6798 | Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); |
6799 | if (Arg.isInvalid()) |
6800 | return true; |
6801 | TheCall->setArg(i, Arg.get()); |
6802 | i++; |
6803 | } |
6804 | |
6805 | |
6806 | unsigned FormatIdx = i; |
6807 | { |
6808 | ExprResult Arg = CheckOSLogFormatStringArg(TheCall->getArg(i)); |
6809 | if (Arg.isInvalid()) |
6810 | return true; |
6811 | TheCall->setArg(i, Arg.get()); |
6812 | i++; |
6813 | } |
6814 | |
6815 | |
6816 | unsigned FirstDataArg = i; |
6817 | while (i < NumArgs) { |
6818 | ExprResult Arg = DefaultVariadicArgumentPromotion( |
6819 | TheCall->getArg(i), VariadicFunction, nullptr); |
6820 | if (Arg.isInvalid()) |
6821 | return true; |
6822 | CharUnits ArgSize = Context.getTypeSizeInChars(Arg.get()->getType()); |
6823 | if (ArgSize.getQuantity() >= 0x100) { |
6824 | return Diag(Arg.get()->getEndLoc(), diag::err_os_log_argument_too_big) |
6825 | << i << (int)ArgSize.getQuantity() << 0xff |
6826 | << TheCall->getSourceRange(); |
6827 | } |
6828 | TheCall->setArg(i, Arg.get()); |
6829 | i++; |
6830 | } |
6831 | |
6832 | |
6833 | |
6834 | if (!IsSizeCall) { |
6835 | llvm::SmallBitVector CheckedVarArgs(NumArgs, false); |
6836 | ArrayRef<const Expr *> Args(TheCall->getArgs(), TheCall->getNumArgs()); |
6837 | bool Success = CheckFormatArguments( |
6838 | Args, false, FormatIdx, FirstDataArg, FST_OSLog, |
6839 | VariadicFunction, TheCall->getBeginLoc(), SourceRange(), |
6840 | CheckedVarArgs); |
6841 | if (!Success) |
6842 | return true; |
6843 | } |
6844 | |
6845 | if (IsSizeCall) { |
6846 | TheCall->setType(Context.getSizeType()); |
6847 | } else { |
6848 | TheCall->setType(Context.VoidPtrTy); |
6849 | } |
6850 | return false; |
6851 | } |
6852 | |
6853 | |
6854 | |
6855 | bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, |
6856 | llvm::APSInt &Result) { |
6857 | Expr *Arg = TheCall->getArg(ArgNum); |
6858 | DeclRefExpr *DRE =cast<DeclRefExpr>(TheCall->getCallee()->IgnoreParenCasts()); |
6859 | FunctionDecl *FDecl = cast<FunctionDecl>(DRE->getDecl()); |
6860 | |
6861 | if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; |
6862 | |
6863 | Optional<llvm::APSInt> R; |
6864 | if (!(R = Arg->getIntegerConstantExpr(Context))) |
6865 | return Diag(TheCall->getBeginLoc(), diag::err_constant_integer_arg_type) |
6866 | << FDecl->getDeclName() << Arg->getSourceRange(); |
6867 | Result = *R; |
6868 | return false; |
6869 | } |
6870 | |
6871 | |
6872 | |
6873 | bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, |
6874 | int Low, int High, bool RangeIsError) { |
6875 | if (isConstantEvaluated()) |
6876 | return false; |
6877 | llvm::APSInt Result; |
6878 | |
6879 | |
6880 | Expr *Arg = TheCall->getArg(ArgNum); |
6881 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
6882 | return false; |
6883 | |
6884 | |
6885 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
6886 | return true; |
6887 | |
6888 | if (Result.getSExtValue() < Low || Result.getSExtValue() > High) { |
6889 | if (RangeIsError) |
6890 | return Diag(TheCall->getBeginLoc(), diag::err_argument_invalid_range) |
6891 | << toString(Result, 10) << Low << High << Arg->getSourceRange(); |
6892 | else |
6893 | |
6894 | |
6895 | DiagRuntimeBehavior(TheCall->getBeginLoc(), TheCall, |
6896 | PDiag(diag::warn_argument_invalid_range) |
6897 | << toString(Result, 10) << Low << High |
6898 | << Arg->getSourceRange()); |
6899 | } |
6900 | |
6901 | return false; |
6902 | } |
6903 | |
6904 | |
6905 | |
6906 | bool Sema::SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum, |
6907 | unsigned Num) { |
6908 | llvm::APSInt Result; |
6909 | |
6910 | |
6911 | Expr *Arg = TheCall->getArg(ArgNum); |
6912 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
6913 | return false; |
6914 | |
6915 | |
6916 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
6917 | return true; |
6918 | |
6919 | if (Result.getSExtValue() % Num != 0) |
6920 | return Diag(TheCall->getBeginLoc(), diag::err_argument_not_multiple) |
6921 | << Num << Arg->getSourceRange(); |
6922 | |
6923 | return false; |
6924 | } |
6925 | |
6926 | |
6927 | |
6928 | bool Sema::SemaBuiltinConstantArgPower2(CallExpr *TheCall, int ArgNum) { |
6929 | llvm::APSInt Result; |
6930 | |
6931 | |
6932 | Expr *Arg = TheCall->getArg(ArgNum); |
6933 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
6934 | return false; |
6935 | |
6936 | |
6937 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
6938 | return true; |
6939 | |
6940 | |
6941 | |
6942 | if (Result.isStrictlyPositive() && (Result & (Result - 1)) == 0) |
6943 | return false; |
6944 | |
6945 | return Diag(TheCall->getBeginLoc(), diag::err_argument_not_power_of_2) |
6946 | << Arg->getSourceRange(); |
6947 | } |
6948 | |
6949 | static bool IsShiftedByte(llvm::APSInt Value) { |
6950 | if (Value.isNegative()) |
6951 | return false; |
6952 | |
6953 | |
6954 | while (true) { |
6955 | |
6956 | if (Value < 0x100) |
6957 | return true; |
6958 | |
6959 | |
6960 | |
6961 | if ((Value & 0xFF) != 0) |
6962 | return false; |
6963 | |
6964 | |
6965 | |
6966 | |
6967 | Value >>= 8; |
6968 | } |
6969 | } |
6970 | |
6971 | |
6972 | |
6973 | |
6974 | bool Sema::SemaBuiltinConstantArgShiftedByte(CallExpr *TheCall, int ArgNum, |
6975 | unsigned ArgBits) { |
6976 | llvm::APSInt Result; |
6977 | |
6978 | |
6979 | Expr *Arg = TheCall->getArg(ArgNum); |
6980 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
6981 | return false; |
6982 | |
6983 | |
6984 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
6985 | return true; |
6986 | |
6987 | |
6988 | Result = Result.getLoBits(ArgBits); |
6989 | Result.setIsUnsigned(true); |
6990 | |
6991 | if (IsShiftedByte(Result)) |
6992 | return false; |
6993 | |
6994 | return Diag(TheCall->getBeginLoc(), diag::err_argument_not_shifted_byte) |
6995 | << Arg->getSourceRange(); |
6996 | } |
6997 | |
6998 | |
6999 | |
7000 | |
7001 | |
7002 | |
7003 | bool Sema::SemaBuiltinConstantArgShiftedByteOrXXFF(CallExpr *TheCall, |
7004 | int ArgNum, |
7005 | unsigned ArgBits) { |
7006 | llvm::APSInt Result; |
7007 | |
7008 | |
7009 | Expr *Arg = TheCall->getArg(ArgNum); |
7010 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7011 | return false; |
7012 | |
7013 | |
7014 | if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) |
7015 | return true; |
7016 | |
7017 | |
7018 | Result = Result.getLoBits(ArgBits); |
7019 | Result.setIsUnsigned(true); |
7020 | |
7021 | |
7022 | if (IsShiftedByte(Result) || |
7023 | (Result > 0 && Result < 0x10000 && (Result & 0xFF) == 0xFF)) |
7024 | return false; |
7025 | |
7026 | return Diag(TheCall->getBeginLoc(), |
7027 | diag::err_argument_not_shifted_byte_or_xxff) |
7028 | << Arg->getSourceRange(); |
7029 | } |
7030 | |
7031 | |
7032 | bool Sema::SemaBuiltinARMMemoryTaggingCall(unsigned BuiltinID, CallExpr *TheCall) { |
7033 | if (BuiltinID == AArch64::BI__builtin_arm_irg) { |
7034 | if (checkArgCount(*this, TheCall, 2)) |
7035 | return true; |
7036 | Expr *Arg0 = TheCall->getArg(0); |
7037 | Expr *Arg1 = TheCall->getArg(1); |
7038 | |
7039 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7040 | if (FirstArg.isInvalid()) |
7041 | return true; |
7042 | QualType FirstArgType = FirstArg.get()->getType(); |
7043 | if (!FirstArgType->isAnyPointerType()) |
7044 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7045 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7046 | TheCall->setArg(0, FirstArg.get()); |
7047 | |
7048 | ExprResult SecArg = DefaultLvalueConversion(Arg1); |
7049 | if (SecArg.isInvalid()) |
7050 | return true; |
7051 | QualType SecArgType = SecArg.get()->getType(); |
7052 | if (!SecArgType->isIntegerType()) |
7053 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_integer) |
7054 | << "second" << SecArgType << Arg1->getSourceRange(); |
7055 | |
7056 | |
7057 | TheCall->setType(FirstArgType); |
7058 | return false; |
7059 | } |
7060 | |
7061 | if (BuiltinID == AArch64::BI__builtin_arm_addg) { |
7062 | if (checkArgCount(*this, TheCall, 2)) |
7063 | return true; |
7064 | |
7065 | Expr *Arg0 = TheCall->getArg(0); |
7066 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7067 | if (FirstArg.isInvalid()) |
7068 | return true; |
7069 | QualType FirstArgType = FirstArg.get()->getType(); |
7070 | if (!FirstArgType->isAnyPointerType()) |
7071 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7072 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7073 | TheCall->setArg(0, FirstArg.get()); |
7074 | |
7075 | |
7076 | TheCall->setType(FirstArgType); |
7077 | |
7078 | |
7079 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
7080 | } |
7081 | |
7082 | if (BuiltinID == AArch64::BI__builtin_arm_gmi) { |
7083 | if (checkArgCount(*this, TheCall, 2)) |
7084 | return true; |
7085 | Expr *Arg0 = TheCall->getArg(0); |
7086 | Expr *Arg1 = TheCall->getArg(1); |
7087 | |
7088 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7089 | if (FirstArg.isInvalid()) |
7090 | return true; |
7091 | QualType FirstArgType = FirstArg.get()->getType(); |
7092 | if (!FirstArgType->isAnyPointerType()) |
7093 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7094 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7095 | |
7096 | QualType SecArgType = Arg1->getType(); |
7097 | if (!SecArgType->isIntegerType()) |
7098 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_integer) |
7099 | << "second" << SecArgType << Arg1->getSourceRange(); |
7100 | TheCall->setType(Context.IntTy); |
7101 | return false; |
7102 | } |
7103 | |
7104 | if (BuiltinID == AArch64::BI__builtin_arm_ldg || |
7105 | BuiltinID == AArch64::BI__builtin_arm_stg) { |
7106 | if (checkArgCount(*this, TheCall, 1)) |
7107 | return true; |
7108 | Expr *Arg0 = TheCall->getArg(0); |
7109 | ExprResult FirstArg = DefaultFunctionArrayLvalueConversion(Arg0); |
7110 | if (FirstArg.isInvalid()) |
7111 | return true; |
7112 | |
7113 | QualType FirstArgType = FirstArg.get()->getType(); |
7114 | if (!FirstArgType->isAnyPointerType()) |
7115 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_must_be_pointer) |
7116 | << "first" << FirstArgType << Arg0->getSourceRange(); |
7117 | TheCall->setArg(0, FirstArg.get()); |
7118 | |
7119 | |
7120 | if (BuiltinID == AArch64::BI__builtin_arm_ldg) |
7121 | TheCall->setType(FirstArgType); |
7122 | return false; |
7123 | } |
7124 | |
7125 | if (BuiltinID == AArch64::BI__builtin_arm_subp) { |
7126 | Expr *ArgA = TheCall->getArg(0); |
7127 | Expr *ArgB = TheCall->getArg(1); |
7128 | |
7129 | ExprResult ArgExprA = DefaultFunctionArrayLvalueConversion(ArgA); |
7130 | ExprResult ArgExprB = DefaultFunctionArrayLvalueConversion(ArgB); |
7131 | |
7132 | if (ArgExprA.isInvalid() || ArgExprB.isInvalid()) |
7133 | return true; |
7134 | |
7135 | QualType ArgTypeA = ArgExprA.get()->getType(); |
7136 | QualType ArgTypeB = ArgExprB.get()->getType(); |
7137 | |
7138 | auto isNull = [&] (Expr *E) -> bool { |
7139 | return E->isNullPointerConstant( |
7140 | Context, Expr::NPC_ValueDependentIsNotNull); }; |
7141 | |
7142 | |
7143 | if (!ArgTypeA->isAnyPointerType() && !isNull(ArgA)) |
7144 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_null_or_pointer) |
7145 | << "first" << ArgTypeA << ArgA->getSourceRange(); |
7146 | |
7147 | if (!ArgTypeB->isAnyPointerType() && !isNull(ArgB)) |
7148 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_arg_null_or_pointer) |
7149 | << "second" << ArgTypeB << ArgB->getSourceRange(); |
7150 | |
7151 | |
7152 | if (ArgTypeA->isAnyPointerType() && !isNull(ArgA) && |
7153 | ArgTypeB->isAnyPointerType() && !isNull(ArgB)) { |
7154 | QualType pointeeA = ArgTypeA->getPointeeType(); |
7155 | QualType pointeeB = ArgTypeB->getPointeeType(); |
7156 | if (!Context.typesAreCompatible( |
7157 | Context.getCanonicalType(pointeeA).getUnqualifiedType(), |
7158 | Context.getCanonicalType(pointeeB).getUnqualifiedType())) { |
7159 | return Diag(TheCall->getBeginLoc(), diag::err_typecheck_sub_ptr_compatible) |
7160 | << ArgTypeA << ArgTypeB << ArgA->getSourceRange() |
7161 | << ArgB->getSourceRange(); |
7162 | } |
7163 | } |
7164 | |
7165 | |
7166 | if (!ArgTypeA->isAnyPointerType() && !ArgTypeB->isAnyPointerType()) |
7167 | return Diag(TheCall->getBeginLoc(), diag::err_memtag_any2arg_pointer) |
7168 | << ArgTypeA << ArgTypeB << ArgA->getSourceRange(); |
7169 | |
7170 | if (isNull(ArgA)) |
7171 | ArgExprA = ImpCastExprToType(ArgExprA.get(), ArgTypeB, CK_NullToPointer); |
7172 | |
7173 | if (isNull(ArgB)) |
7174 | ArgExprB = ImpCastExprToType(ArgExprB.get(), ArgTypeA, CK_NullToPointer); |
7175 | |
7176 | TheCall->setArg(0, ArgExprA.get()); |
7177 | TheCall->setArg(1, ArgExprB.get()); |
7178 | TheCall->setType(Context.LongLongTy); |
7179 | return false; |
7180 | } |
7181 | assert(false && "Unhandled ARM MTE intrinsic"); |
7182 | return true; |
7183 | } |
7184 | |
7185 | |
7186 | |
7187 | bool Sema::SemaBuiltinARMSpecialReg(unsigned BuiltinID, CallExpr *TheCall, |
7188 | int ArgNum, unsigned ExpectedFieldNum, |
7189 | bool AllowName) { |
7190 | bool IsARMBuiltin = BuiltinID == ARM::BI__builtin_arm_rsr64 || |
7191 | BuiltinID == ARM::BI__builtin_arm_wsr64 || |
7192 | BuiltinID == ARM::BI__builtin_arm_rsr || |
7193 | BuiltinID == ARM::BI__builtin_arm_rsrp || |
7194 | BuiltinID == ARM::BI__builtin_arm_wsr || |
7195 | BuiltinID == ARM::BI__builtin_arm_wsrp; |
7196 | bool IsAArch64Builtin = BuiltinID == AArch64::BI__builtin_arm_rsr64 || |
7197 | BuiltinID == AArch64::BI__builtin_arm_wsr64 || |
7198 | BuiltinID == AArch64::BI__builtin_arm_rsr || |
7199 | BuiltinID == AArch64::BI__builtin_arm_rsrp || |
7200 | BuiltinID == AArch64::BI__builtin_arm_wsr || |
7201 | BuiltinID == AArch64::BI__builtin_arm_wsrp; |
7202 | assert((IsARMBuiltin || IsAArch64Builtin) && "Unexpected ARM builtin."); |
7203 | |
7204 | |
7205 | Expr *Arg = TheCall->getArg(ArgNum); |
7206 | if (Arg->isTypeDependent() || Arg->isValueDependent()) |
7207 | return false; |
7208 | |
7209 | |
7210 | if (!isa<StringLiteral>(Arg->IgnoreParenImpCasts())) |
7211 | return Diag(TheCall->getBeginLoc(), diag::err_expr_not_string_literal) |
7212 | << Arg->getSourceRange(); |
7213 | |
7214 | |
7215 | StringRef Reg = cast<StringLiteral>(Arg->IgnoreParenImpCasts())->getString(); |
7216 | SmallVector<StringRef, 6> Fields; |
7217 | Reg.split(Fields, ":"); |
7218 | |
7219 | if (Fields.size() != ExpectedFieldNum && !(AllowName && Fields.size() == 1)) |
7220 | return Diag(TheCall->getBeginLoc(), diag::err_arm_invalid_specialreg) |
7221 | << Arg->getSourceRange(); |
7222 | |
7223 | |
7224 | |
7225 | |
7226 | |
7227 | if (Fields.size() > 1) { |
7228 | bool FiveFields = Fields.size() == 5; |
7229 | |
7230 | bool ValidString = true; |
7231 | if (IsARMBuiltin) { |
7232 | ValidString &= Fields[0].startswith_insensitive("cp") || |
7233 | Fields[0].startswith_insensitive("p"); |
7234 | if (ValidString) |
7235 | Fields[0] = Fields[0].drop_front( |
7236 | Fields[0].startswith_insensitive("cp") ? 2 : 1); |
7237 | |
7238 | ValidString &= Fields[2].startswith_insensitive("c"); |
7239 | if (ValidString) |
7240 | Fields[2] = Fields[2].drop_front(1); |
7241 | |
7242 | if (FiveFields) { |
7243 | ValidString &= Fields[3].startswith_insensitive("c"); |
7244 | if (ValidString) |
7245 | Fields[3] = Fields[3].drop_front(1); |
7246 | } |
7247 | } |
7248 | |
7249 | SmallVector<int, 5> Ranges; |
7250 | if (FiveFields) |
7251 | Ranges.append({IsAArch64Builtin ? 1 : 15, 7, 15, 15, 7}); |
7252 | else |
7253 | Ranges.append({15, 7, 15}); |
7254 | |
7255 | for (unsigned i=0; i<Fields.size(); ++i) { |
7256 | int IntField; |
7257 | ValidString &= !Fields[i].getAsInteger(10, IntField); |
7258 | ValidString &= (IntField >= 0 && IntField <= Ranges[i]); |
7259 | } |
7260 | |
7261 | if (!ValidString) |
7262 | return Diag(TheCall->getBeginLoc(), diag::err_arm_invalid_specialreg) |
7263 | << Arg->getSourceRange(); |
7264 | } else if (IsAArch64Builtin && Fields.size() == 1) { |
7265 | |
7266 | |
7267 | |
7268 | |
7269 | |
7270 | |
7271 | if (TheCall->getNumArgs() != 2) |
7272 | return false; |
7273 | |
7274 | std::string RegLower = Reg.lower(); |
7275 | if (RegLower != "spsel" && RegLower != "daifset" && RegLower != "daifclr" && |
7276 | RegLower != "pan" && RegLower != "uao") |
7277 | return false; |
7278 | |
7279 | return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); |
7280 | } |
7281 | |
7282 | return false; |
7283 | } |
7284 | |
7285 | |
7286 | |
7287 | |
7288 | |
7289 | bool Sema::SemaBuiltinPPCMMACall(CallExpr *TheCall, const char *TypeStr) { |
7290 | |
7291 | assert((TypeStr[0] != '\0') && |
7292 | "Invalid types in PPC MMA builtin declaration"); |
7293 | |
7294 | unsigned Mask = 0; |
7295 | unsigned ArgNum = 0; |
7296 | |
7297 | |
7298 | |
7299 | QualType type = DecodePPCMMATypeFromStr(Context, TypeStr, Mask); |
7300 | TheCall->setType(type); |
7301 | |
7302 | while (*TypeStr != '\0') { |
7303 | Mask = 0; |
7304 | QualType ExpectedType = DecodePPCMMATypeFromStr(Context, TypeStr, Mask); |
7305 | if (ArgNum >= TheCall->getNumArgs()) { |
7306 | ArgNum++; |
7307 | break; |
7308 | } |
7309 | |
7310 | Expr *Arg = TheCall->getArg(ArgNum); |
7311 | QualType ArgType = Arg->getType(); |
7312 | |
7313 | if ((ExpectedType->isVoidPointerType() && !ArgType->isPointerType()) || |
7314 | (!ExpectedType->isVoidPointerType() && |
7315 | ArgType.getCanonicalType() != ExpectedType)) |
7316 | return Diag(Arg->getBeginLoc(), diag::err_typecheck_convert_incompatible) |
7317 | << ArgType << ExpectedType << 1 << 0 << 0; |
7318 | |
7319 | |
7320 | |
7321 | |
7322 | if (Mask != 0 && |
7323 | SemaBuiltinConstantArgRange(TheCall, ArgNum, 0, Mask, true)) |
7324 | return true; |
7325 | |
7326 | ArgNum++; |
7327 | } |
7328 | |
7329 | |
7330 | |
7331 | |
7332 | |
7333 | while (*TypeStr != '\0') { |
7334 | (void) DecodePPCMMATypeFromStr(Context, TypeStr, Mask); |
7335 | ArgNum++; |
7336 | } |
7337 | if (checkArgCount(*this, TheCall, ArgNum)) |
7338 | return true; |
7339 | |
7340 | return false; |
7341 | } |
7342 | |
7343 | |
7344 | |
7345 | |
7346 | bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) { |
7347 | if (!Context.getTargetInfo().hasSjLjLowering()) |
7348 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_longjmp_unsupported) |
7349 | << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc()); |
7350 | |
7351 | Expr *Arg = TheCall->getArg(1); |
7352 | llvm::APSInt Result; |
7353 | |
7354 | |
7355 | if (SemaBuiltinConstantArg(TheCall, 1, Result)) |
7356 | return true; |
7357 | |
7358 | if (Result != 1) |
7359 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_longjmp_invalid_val) |
7360 | << SourceRange(Arg->getBeginLoc(), Arg->getEndLoc()); |
7361 | |
7362 | return false; |
7363 | } |
7364 | |
7365 | |
7366 | |
7367 | bool Sema::SemaBuiltinSetjmp(CallExpr *TheCall) { |
7368 | if (!Context.getTargetInfo().hasSjLjLowering()) |
7369 | return Diag(TheCall->getBeginLoc(), diag::err_builtin_setjmp_unsupported) |
7370 | << SourceRange(TheCall->getBeginLoc(), TheCall->getEndLoc()); |
7371 | return false; |
7372 | } |
7373 | |
7374 | namespace { |
7375 | |
7376 | class UncoveredArgHandler { |
7377 | enum { Unknown = -1, AllCovered = -2 }; |
7378 | |
7379 | signed FirstUncoveredArg = Unknown; |
7380 | SmallVector<const Expr *, 4> DiagnosticExprs; |
7381 | |
7382 | public: |
7383 | UncoveredArgHandler() = default; |
7384 | |
7385 | bool hasUncoveredArg() const { |
7386 | return (FirstUncoveredArg >= 0); |
7387 | } |
7388 | |
7389 | unsigned getUncoveredArg() const { |
7390 | assert(hasUncoveredArg() && "no uncovered argument"); |
7391 | return FirstUncoveredArg; |
7392 | } |
7393 | |
7394 | void setAllCovered() { |
7395 | |
7396 | |
7397 | DiagnosticExprs.clear(); |
7398 | FirstUncoveredArg = AllCovered; |
7399 | } |
7400 | |
7401 | void Update(signed NewFirstUncoveredArg, const Expr *StrExpr) { |
7402 | assert(NewFirstUncoveredArg >= 0 && "Outside range"); |
7403 | |
7404 | |
7405 | if (FirstUncoveredArg == AllCovered) |
7406 | return; |
7407 | |
7408 | |
7409 | |
7410 | if (NewFirstUncoveredArg == FirstUncoveredArg) |
7411 | DiagnosticExprs.push_back(StrExpr); |
7412 | else if (NewFirstUncoveredArg > FirstUncoveredArg) { |
7413 | DiagnosticExprs.clear(); |
7414 | DiagnosticExprs.push_back(StrExpr); |
7415 | FirstUncoveredArg = NewFirstUncoveredArg; |
7416 | } |
7417 | } |
7418 | |
7419 | void Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr); |
7420 | }; |
7421 | |
7422 | enum StringLiteralCheckType { |
7423 | SLCT_NotALiteral, |
7424 | SLCT_UncheckedLiteral, |
7425 | SLCT_CheckedLiteral |
7426 | }; |
7427 | |
7428 | } |
7429 | |
7430 | static void sumOffsets(llvm::APSInt &Offset, llvm::APSInt Addend, |
7431 | BinaryOperatorKind BinOpKind, |
7432 | bool AddendIsRight) { |
7433 | unsigned BitWidth = Offset.getBitWidth(); |
7434 | unsigned AddendBitWidth = Addend.getBitWidth(); |
7435 | |
7436 | if (Addend.isUnsigned()) { |
7437 | Addend = Addend.zext(++AddendBitWidth); |
7438 | Addend.setIsSigned(true); |
7439 | } |
7440 | |
7441 | if (AddendBitWidth > BitWidth) { |
7442 | Offset = Offset.sext(AddendBitWidth); |
7443 | BitWidth = AddendBitWidth; |
7444 | } else if (BitWidth > AddendBitWidth) { |
7445 | Addend = Addend.sext(BitWidth); |
7446 | } |
7447 | |
7448 | bool Ov = false; |
7449 | llvm::APSInt ResOffset = Offset; |
7450 | if (BinOpKind == BO_Add) |
7451 | ResOffset = Offset.sadd_ov(Addend, Ov); |
7452 | else { |
7453 | assert(AddendIsRight && BinOpKind == BO_Sub && |
7454 | "operator must be add or sub with addend on the right"); |
7455 | ResOffset = Offset.ssub_ov(Addend, Ov); |
7456 | } |
7457 | |
7458 | |
7459 | |
7460 | if (Ov) { |
7461 | assert(BitWidth <= std::numeric_limits<unsigned>::max() / 2 && |
7462 | "index (intermediate) result too big"); |
7463 | Offset = Offset.sext(2 * BitWidth); |
7464 | sumOffsets(Offset, Addend, BinOpKind, AddendIsRight); |
7465 | return; |
7466 | } |
7467 | |
7468 | Offset = ResOffset; |
7469 | } |
7470 | |
7471 | namespace { |
7472 | |
7473 | |
7474 | |
7475 | |
7476 | class FormatStringLiteral { |
7477 | const StringLiteral *FExpr; |
7478 | int64_t Offset; |
7479 | |
7480 | public: |
7481 | FormatStringLiteral(const StringLiteral *fexpr, int64_t Offset = 0) |
7482 | : FExpr(fexpr), Offset(Offset) {} |
7483 | |
7484 | StringRef getString() const { |
7485 | return FExpr->getString().drop_front(Offset); |
7486 | } |
7487 | |
7488 | unsigned getByteLength() const { |
7489 | return FExpr->getByteLength() - getCharByteWidth() * Offset; |
7490 | } |
7491 | |
7492 | unsigned getLength() const { return FExpr->getLength() - Offset; } |
7493 | unsigned getCharByteWidth() const { return FExpr->getCharByteWidth(); } |
7494 | |
7495 | StringLiteral::StringKind getKind() const { return FExpr->getKind(); } |
7496 | |
7497 | QualType getType() const { return FExpr->getType(); } |
7498 | |
7499 | bool isAscii() const { return FExpr->isAscii(); } |
7500 | bool isWide() const { return FExpr->isWide(); } |
7501 | bool isUTF8() const { return FExpr->isUTF8(); } |
7502 | bool isUTF16() const { return FExpr->isUTF16(); } |
7503 | bool isUTF32() const { return FExpr->isUTF32(); } |
7504 | bool isPascal() const { return FExpr->isPascal(); } |
7505 | |
7506 | SourceLocation getLocationOfByte( |
7507 | unsigned ByteNo, const SourceManager &SM, const LangOptions &Features, |
7508 | const TargetInfo &Target, unsigned *StartToken = nullptr, |
7509 | unsigned *StartTokenByteOffset = nullptr) const { |
7510 | return FExpr->getLocationOfByte(ByteNo + Offset, SM, Features, Target, |
7511 | StartToken, StartTokenByteOffset); |
7512 | } |
7513 | |
7514 | SourceLocation getBeginLoc() const LLVM_READONLY { |
7515 | return FExpr->getBeginLoc().getLocWithOffset(Offset); |
7516 | } |
7517 | |
7518 | SourceLocation getEndLoc() const LLVM_READONLY { return FExpr->getEndLoc(); } |
7519 | }; |
7520 | |
7521 | } |
7522 | |
7523 | static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, |
7524 | const Expr *OrigFormatExpr, |
7525 | ArrayRef<const Expr *> Args, |
7526 | bool HasVAListArg, unsigned format_idx, |
7527 | unsigned firstDataArg, |
7528 | Sema::FormatStringType Type, |
7529 | bool inFunctionCall, |
7530 | Sema::VariadicCallType CallType, |
7531 | llvm::SmallBitVector &CheckedVarArgs, |
7532 | UncoveredArgHandler &UncoveredArg, |
7533 | bool IgnoreStringsWithoutSpecifiers); |
7534 | |
7535 | |
7536 | |
7537 | |
7538 | |
7539 | static StringLiteralCheckType |
7540 | checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args, |
7541 | bool HasVAListArg, unsigned format_idx, |
7542 | unsigned firstDataArg, Sema::FormatStringType Type, |
7543 | Sema::VariadicCallType CallType, bool InFunctionCall, |
7544 | llvm::SmallBitVector &CheckedVarArgs, |
7545 | UncoveredArgHandler &UncoveredArg, |
7546 | llvm::APSInt Offset, |
7547 | bool IgnoreStringsWithoutSpecifiers = false) { |
7548 | if (S.isConstantEvaluated()) |
7549 | return SLCT_NotALiteral; |
7550 | tryAgain: |
7551 | assert(Offset.isSigned() && "invalid offset"); |
7552 | |
7553 | if (E->isTypeDependent() || E->isValueDependent()) |
7554 | return SLCT_NotALiteral; |
7555 | |
7556 | E = E->IgnoreParenCasts(); |
7557 | |
7558 | if (E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull)) |
7559 | |
7560 | |
7561 | |
7562 | |
7563 | return SLCT_UncheckedLiteral; |
7564 | |
7565 | switch (E->getStmtClass()) { |
7566 | case Stmt::BinaryConditionalOperatorClass: |
7567 | case Stmt::ConditionalOperatorClass: { |
7568 | |
7569 | |
7570 | const AbstractConditionalOperator *C = |
7571 | cast<AbstractConditionalOperator>(E); |
7572 | |
7573 | |
7574 | |
7575 | |
7576 | bool CheckLeft = true, CheckRight = true; |
7577 | |
7578 | bool Cond; |
7579 | if (C->getCond()->EvaluateAsBooleanCondition(Cond, S.getASTContext(), |
7580 | S.isConstantEvaluated())) { |
7581 | if (Cond) |
7582 | CheckRight = false; |
7583 | else |
7584 | CheckLeft = false; |
7585 | } |
7586 | |
7587 | |
7588 | |
7589 | |
7590 | |
7591 | StringLiteralCheckType Left; |
7592 | if (!CheckLeft) |
7593 | Left = SLCT_UncheckedLiteral; |
7594 | else { |
7595 | Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, |
7596 | HasVAListArg, format_idx, firstDataArg, |
7597 | Type, CallType, InFunctionCall, |
7598 | CheckedVarArgs, UncoveredArg, Offset, |
7599 | IgnoreStringsWithoutSpecifiers); |
7600 | if (Left == SLCT_NotALiteral || !CheckRight) { |
7601 | return Left; |
7602 | } |
7603 | } |
7604 | |
7605 | StringLiteralCheckType Right = checkFormatStringExpr( |
7606 | S, C->getFalseExpr(), Args, HasVAListArg, format_idx, firstDataArg, |
7607 | Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset, |
7608 | IgnoreStringsWithoutSpecifiers); |
7609 | |
7610 | return (CheckLeft && Left < Right) ? Left : Right; |
7611 | } |
7612 | |
7613 | case Stmt::ImplicitCastExprClass: |
7614 | E = cast<ImplicitCastExpr>(E)->getSubExpr(); |
7615 | goto tryAgain; |
7616 | |
7617 | case Stmt::OpaqueValueExprClass: |
7618 | if (const Expr *src = cast<OpaqueValueExpr>(E)->getSourceExpr()) { |
7619 | E = src; |
7620 | goto tryAgain; |
7621 | } |
7622 | return SLCT_NotALiteral; |
7623 | |
7624 | case Stmt::PredefinedExprClass: |
7625 | |
7626 | |
7627 | |
7628 | return SLCT_UncheckedLiteral; |
7629 | |
7630 | case Stmt::DeclRefExprClass: { |
7631 | const DeclRefExpr *DR = cast<DeclRefExpr>(E); |
7632 | |
7633 | |
7634 | |
7635 | if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl())) { |
7636 | bool isConstant = false; |
7637 | QualType T = DR->getType(); |
7638 | |
7639 | if (const ArrayType *AT = S.Context.getAsArrayType(T)) { |
7640 | isConstant = AT->getElementType().isConstant(S.Context); |
7641 | } else if (const PointerType *PT = T->getAs<PointerType>()) { |
7642 | isConstant = T.isConstant(S.Context) && |
7643 | PT->getPointeeType().isConstant(S.Context); |
7644 | } else if (T->isObjCObjectPointerType()) { |
7645 | |
7646 | |
7647 | isConstant = T.isConstant(S.Context); |
7648 | } |
7649 | |
7650 | if (isConstant) { |
7651 | if (const Expr *Init = VD->getAnyInitializer()) { |
7652 | |
7653 | if (const InitListExpr *InitList = dyn_cast<InitListExpr>(Init)) { |
7654 | if (InitList->isStringLiteralInit()) |
7655 | Init = InitList->getInit(0)->IgnoreParenImpCasts(); |
7656 | } |
7657 | return checkFormatStringExpr(S, Init, Args, |
7658 | HasVAListArg, format_idx, |
7659 | firstDataArg, Type, CallType, |
7660 | false, CheckedVarArgs, |
7661 | UncoveredArg, Offset); |
7662 | } |
7663 | } |
7664 | |
7665 | |
7666 | |
7667 | |
7668 | |
7669 | |
7670 | |
7671 | |
7672 | |
7673 | |
7674 | |
7675 | |
7676 | |
7677 | |
7678 | |
7679 | if (HasVAListArg) { |
7680 | if (const ParmVarDecl *PV = dyn_cast<ParmVarDecl>(VD)) { |
7681 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(PV->getDeclContext())) { |
7682 | int PVIndex = PV->getFunctionScopeIndex() + 1; |
7683 | for (const auto *PVFormat : ND->specific_attrs<FormatAttr>()) { |
7684 | |
7685 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ND)) |
7686 | if (MD->isInstance()) |
7687 | ++PVIndex; |
7688 | |
7689 | |
7690 | if (PVIndex == PVFormat->getFormatIdx() && |
7691 | Type == S.GetFormatStringType(PVFormat)) |
7692 | return SLCT_UncheckedLiteral; |
7693 | } |
7694 | } |
7695 | } |
7696 | } |
7697 | } |
7698 | |
7699 | return SLCT_NotALiteral; |
7700 | } |
7701 | |
7702 | case Stmt::CallExprClass: |
7703 | case Stmt::CXXMemberCallExprClass: { |
7704 | const CallExpr *CE = cast<CallExpr>(E); |
7705 | if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(CE->getCalleeDecl())) { |
7706 | bool IsFirst = true; |
7707 | StringLiteralCheckType CommonResult; |
7708 | for (const auto *FA : ND->specific_attrs<FormatArgAttr>()) { |
7709 | const Expr *Arg = CE->getArg(FA->getFormatIdx().getASTIndex()); |
7710 | StringLiteralCheckType Result = checkFormatStringExpr( |
7711 | S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, |
7712 | CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset, |
7713 | IgnoreStringsWithoutSpecifiers); |
7714 | if (IsFirst) { |
7715 | CommonResult = Result; |
7716 | IsFirst = false; |
7717 | } |
7718 | } |
7719 | if (!IsFirst) |
7720 | return CommonResult; |
7721 | |
7722 | if (const auto *FD = dyn_cast<FunctionDecl>(ND)) { |
7723 | unsigned BuiltinID = FD->getBuiltinID(); |
7724 | if (BuiltinID == Builtin::BI__builtin___CFStringMakeConstantString || |
7725 | BuiltinID == Builtin::BI__builtin___NSStringMakeConstantString) { |
7726 | const Expr *Arg = CE->getArg(0); |
7727 | return checkFormatStringExpr(S, Arg, Args, |
7728 | HasVAListArg, format_idx, |
7729 | firstDataArg, Type, CallType, |
7730 | InFunctionCall, CheckedVarArgs, |
7731 | UncoveredArg, Offset, |
7732 | IgnoreStringsWithoutSpecifiers); |
7733 | } |
7734 | } |
7735 | } |
7736 | |
7737 | return SLCT_NotALiteral; |
7738 | } |
7739 | case Stmt::ObjCMessageExprClass: { |
7740 | const auto *ME = cast<ObjCMessageExpr>(E); |
7741 | if (const auto *MD = ME->getMethodDecl()) { |
7742 | if (const auto *FA = MD->getAttr<FormatArgAttr>()) { |
7743 | |
7744 | |
7745 | |
7746 | |
7747 | |
7748 | |
7749 | |
7750 | const ObjCInterfaceDecl *IFace; |
7751 | if (MD->isInstanceMethod() && (IFace = MD->getClassInterface()) && |
7752 | IFace->getIdentifier()->isStr("NSBundle") && |
7753 | MD->getSelector().isKeywordSelector( |
7754 | {"localizedStringForKey", "value", "table"})) { |
7755 | IgnoreStringsWithoutSpecifiers = true; |
7756 | } |
7757 | |
7758 | const Expr *Arg = ME->getArg(FA->getFormatIdx().getASTIndex()); |
7759 | return checkFormatStringExpr( |
7760 | S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, |
7761 | CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset, |
7762 | IgnoreStringsWithoutSpecifiers); |
7763 | } |
7764 | } |
7765 | |
7766 | return SLCT_NotALiteral; |
7767 | } |
7768 | case Stmt::ObjCStringLiteralClass: |
7769 | case Stmt::StringLiteralClass: { |
7770 | const StringLiteral *StrE = nullptr; |
7771 | |
7772 | if (const ObjCStringLiteral *ObjCFExpr = dyn_cast<ObjCStringLiteral>(E)) |
7773 | StrE = ObjCFExpr->getString(); |
7774 | else |
7775 | StrE = cast<StringLiteral>(E); |
7776 | |
7777 | if (StrE) { |
7778 | if (Offset.isNegative() || Offset > StrE->getLength()) { |
7779 | |
7780 | |
7781 | return SLCT_NotALiteral; |
7782 | } |
7783 | FormatStringLiteral FStr(StrE, Offset.sextOrTrunc(64).getSExtValue()); |
7784 | CheckFormatString(S, &FStr, E, Args, HasVAListArg, format_idx, |
7785 | firstDataArg, Type, InFunctionCall, CallType, |
7786 | CheckedVarArgs, UncoveredArg, |
7787 | IgnoreStringsWithoutSpecifiers); |
7788 | return SLCT_CheckedLiteral; |
7789 | } |
7790 | |
7791 | return SLCT_NotALiteral; |
7792 | } |
7793 | case Stmt::BinaryOperatorClass: { |
7794 | const BinaryOperator *BinOp = cast<BinaryOperator>(E); |
7795 | |
7796 | |
7797 | if (BinOp->isAdditiveOp()) { |
7798 | Expr::EvalResult LResult, RResult; |
7799 | |
7800 | bool LIsInt = BinOp->getLHS()->EvaluateAsInt( |
7801 | LResult, S.Context, Expr::SE_NoSideEffects, S.isConstantEvaluated()); |
7802 | bool RIsInt = BinOp->getRHS()->EvaluateAsInt( |
7803 | RResult, S.Context, Expr::SE_NoSideEffects, S.isConstantEvaluated()); |
7804 | |
7805 | if (LIsInt != RIsInt) { |
7806 | BinaryOperatorKind BinOpKind = BinOp->getOpcode(); |
7807 | |
7808 | if (LIsInt) { |
7809 | if (BinOpKind == BO_Add) { |
7810 | sumOffsets(Offset, LResult.Val.getInt(), BinOpKind, RIsInt); |
7811 | E = BinOp->getRHS(); |
7812 | goto tryAgain; |
7813 | } |
7814 | } else { |
7815 | sumOffsets(Offset, RResult.Val.getInt(), BinOpKind, RIsInt); |
7816 | E = BinOp->getLHS(); |
7817 | goto tryAgain; |
7818 | } |
7819 | } |
7820 | } |
7821 | |
7822 | return SLCT_NotALiteral; |
7823 | } |
7824 | case Stmt::UnaryOperatorClass: { |
7825 | const UnaryOperator *UnaOp = cast<UnaryOperator>(E); |
7826 | auto ASE = dyn_cast<ArraySubscriptExpr>(UnaOp->getSubExpr()); |
7827 | if (UnaOp->getOpcode() == UO_AddrOf && ASE) { |
7828 | Expr::EvalResult IndexResult; |
7829 | if (ASE->getRHS()->EvaluateAsInt(IndexResult, S.Context, |
7830 | Expr::SE_NoSideEffects, |
7831 | S.isConstantEvaluated())) { |
7832 | sumOffsets(Offset, IndexResult.Val.getInt(), BO_Add, |
7833 | true); |
7834 | E = ASE->getBase(); |
7835 | goto tryAgain; |
7836 | } |
7837 | } |
7838 | |
7839 | return SLCT_NotALiteral; |
7840 | } |
7841 | |
7842 | default: |
7843 | return SLCT_NotALiteral; |
7844 | } |
7845 | } |
7846 | |
7847 | Sema::FormatStringType Sema::GetFormatStringType(const FormatAttr *Format) { |
7848 | return llvm::StringSwitch<FormatStringType>(Format->getType()->getName()) |
7849 | .Case("scanf", FST_Scanf) |
7850 | .Cases("printf", "printf0", "syslog", FST_Printf) |
7851 | .Cases("NSString", "CFString", FST_NSString) |
7852 | .Case("strftime", FST_Strftime) |
7853 | .Case("strfmon", FST_Strfmon) |
7854 | .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) |
7855 | .Case("freebsd_kprintf", FST_FreeBSDKPrintf) |
7856 | .Case("os_trace", FST_OSLog) |
7857 | .Case("os_log", FST_OSLog) |
7858 | .Default(FST_Unknown); |
7859 | } |
7860 | |
7861 | |
7862 | |
7863 | |
7864 | bool Sema::CheckFormatArguments(const FormatAttr *Format, |
7865 | ArrayRef<const Expr *> Args, |
7866 | bool IsCXXMember, |
7867 | VariadicCallType CallType, |
7868 | SourceLocation Loc, SourceRange Range, |
7869 | llvm::SmallBitVector &CheckedVarArgs) { |
7870 | FormatStringInfo FSI; |
7871 | if (getFormatStringInfo(Format, IsCXXMember, &FSI)) |
7872 | return CheckFormatArguments(Args, FSI.HasVAListArg, FSI.FormatIdx, |
7873 | FSI.FirstDataArg, GetFormatStringType(Format), |
7874 | CallType, Loc, Range, CheckedVarArgs); |
7875 | return false; |
7876 | } |
7877 | |
7878 | bool Sema::CheckFormatArguments(ArrayRef<const Expr *> Args, |
7879 | bool HasVAListArg, unsigned format_idx, |
7880 | unsigned firstDataArg, FormatStringType Type, |
7881 | VariadicCallType CallType, |
7882 | SourceLocation Loc, SourceRange Range, |
7883 | llvm::SmallBitVector &CheckedVarArgs) { |
7884 | |
7885 | if (format_idx >= Args.size()) { |
7886 | Diag(Loc, diag::warn_missing_format_string) << Range; |
7887 | return false; |
7888 | } |
7889 | |
7890 | const Expr *OrigFormatExpr = Args[format_idx]->IgnoreParenCasts(); |
7891 | |
7892 | |
7893 | |
7894 | |
7895 | |
7896 | |
7897 | |
7898 | |
7899 | |
7900 | |
7901 | |
7902 | |
7903 | |
7904 | UncoveredArgHandler UncoveredArg; |
7905 | StringLiteralCheckType CT = |
7906 | checkFormatStringExpr(*this, OrigFormatExpr, Args, HasVAListArg, |
7907 | format_idx, firstDataArg, Type, CallType, |
7908 | true, CheckedVarArgs, |
7909 | UncoveredArg, |
7910 | llvm::APSInt(64, false) = 0); |
7911 | |
7912 | |
7913 | if (UncoveredArg.hasUncoveredArg()) { |
7914 | unsigned ArgIdx = UncoveredArg.getUncoveredArg() + firstDataArg; |
7915 | assert(ArgIdx < Args.size() && "ArgIdx outside bounds"); |
7916 | UncoveredArg.Diagnose(*this, true, Args[ArgIdx]); |
7917 | } |
7918 | |
7919 | if (CT != SLCT_NotALiteral) |
7920 | |
7921 | return CT == SLCT_CheckedLiteral; |
7922 | |
7923 | |
7924 | |
7925 | if (Type == FST_Strftime) |
7926 | return false; |
7927 | |
7928 | |
7929 | |
7930 | |
7931 | |
7932 | SourceLocation FormatLoc = Args[format_idx]->getBeginLoc(); |
7933 | if (Type == FST_NSString && SourceMgr.isInSystemMacro(FormatLoc)) |
7934 | return false; |
7935 | |
7936 | |
7937 | |
7938 | if (Args.size() == firstDataArg) { |
7939 | Diag(FormatLoc, diag::warn_format_nonliteral_noargs) |
7940 | << OrigFormatExpr->getSourceRange(); |
7941 | switch (Type) { |
7942 | default: |
7943 | break; |
7944 | case FST_Kprintf: |
7945 | case FST_FreeBSDKPrintf: |
7946 | case FST_Printf: |
7947 | case FST_Syslog: |
7948 | Diag(FormatLoc, diag::note_format_security_fixit) |
7949 | << FixItHint::CreateInsertion(FormatLoc, "\"%s\", "); |
7950 | break; |
7951 | case FST_NSString: |
7952 | Diag(FormatLoc, diag::note_format_security_fixit) |
7953 | << FixItHint::CreateInsertion(FormatLoc, "@\"%@\", "); |
7954 | break; |
7955 | } |
7956 | } else { |
7957 | Diag(FormatLoc, diag::warn_format_nonliteral) |
7958 | << OrigFormatExpr->getSourceRange(); |
7959 | } |
7960 | return false; |
7961 | } |
7962 | |
7963 | namespace { |
7964 | |
7965 | class CheckFormatHandler : public analyze_format_string::FormatStringHandler { |
7966 | protected: |
7967 | Sema &S; |
7968 | const FormatStringLiteral *FExpr; |
7969 | const Expr *OrigFormatExpr; |
7970 | const Sema::FormatStringType FSType; |
7971 | const unsigned FirstDataArg; |
7972 | const unsigned NumDataArgs; |
7973 | const char *Beg; |
7974 | const bool HasVAListArg; |
7975 | ArrayRef<const Expr *> Args; |
7976 | unsigned FormatIdx; |
7977 | llvm::SmallBitVector CoveredArgs; |
7978 | bool usesPositionalArgs = false; |
7979 | bool atFirstArg = true; |
7980 | bool inFunctionCall; |
7981 | Sema::VariadicCallType CallType; |
7982 | llvm::SmallBitVector &CheckedVarArgs; |
7983 | UncoveredArgHandler &UncoveredArg; |
7984 | |
7985 | public: |
7986 | CheckFormatHandler(Sema &s, const FormatStringLiteral *fexpr, |
7987 | const Expr *origFormatExpr, |
7988 | const Sema::FormatStringType type, unsigned firstDataArg, |
7989 | unsigned numDataArgs, const char *beg, bool hasVAListArg, |
7990 | ArrayRef<const Expr *> Args, unsigned formatIdx, |
7991 | bool inFunctionCall, Sema::VariadicCallType callType, |
7992 | llvm::SmallBitVector &CheckedVarArgs, |
7993 | UncoveredArgHandler &UncoveredArg) |
7994 | : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FSType(type), |
7995 | FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), |
7996 | HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), |
7997 | inFunctionCall(inFunctionCall), CallType(callType), |
7998 | CheckedVarArgs(CheckedVarArgs), UncoveredArg(UncoveredArg) { |
7999 | CoveredArgs.resize(numDataArgs); |
8000 | CoveredArgs.reset(); |
8001 | } |
8002 | |
8003 | void DoneProcessing(); |
8004 | |
8005 | void HandleIncompleteSpecifier(const char *startSpecifier, |
8006 | unsigned specifierLen) override; |
8007 | |
8008 | void HandleInvalidLengthModifier( |
8009 | const analyze_format_string::FormatSpecifier &FS, |
8010 | const analyze_format_string::ConversionSpecifier &CS, |
8011 | const char *startSpecifier, unsigned specifierLen, |
8012 | unsigned DiagID); |
8013 | |
8014 | void HandleNonStandardLengthModifier( |
8015 | const analyze_format_string::FormatSpecifier &FS, |
8016 | const char *startSpecifier, unsigned specifierLen); |
8017 | |
8018 | void HandleNonStandardConversionSpecifier( |
8019 | const analyze_format_string::ConversionSpecifier &CS, |
8020 | const char *startSpecifier, unsigned specifierLen); |
8021 | |
8022 | void HandlePosition(const char *startPos, unsigned posLen) override; |
8023 | |
8024 | void HandleInvalidPosition(const char *startSpecifier, |
8025 | unsigned specifierLen, |
8026 | analyze_format_string::PositionContext p) override; |
8027 | |
8028 | void HandleZeroPosition(const char *startPos, unsigned posLen) override; |
8029 | |
8030 | void HandleNullChar(const char *nullCharacter) override; |
8031 | |
8032 | template <typename Range> |
8033 | static void |
8034 | EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, |
8035 | const PartialDiagnostic &PDiag, SourceLocation StringLoc, |
8036 | bool IsStringLocation, Range StringRange, |
8037 | ArrayRef<FixItHint> Fixit = None); |
8038 | |
8039 | protected: |
8040 | bool HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, |
8041 | const char *startSpec, |
8042 | unsigned specifierLen, |
8043 | const char *csStart, unsigned csLen); |
8044 | |
8045 | void HandlePositionalNonpositionalArgs(SourceLocation Loc, |
8046 | const char *startSpec, |
8047 | unsigned specifierLen); |
8048 | |
8049 | SourceRange getFormatStringRange(); |
8050 | CharSourceRange getSpecifierRange(const char *startSpecifier, |
8051 | unsigned specifierLen); |
8052 | SourceLocation getLocationOfByte(const char *x); |
8053 | |
8054 | const Expr *getDataArg(unsigned i) const; |
8055 | |
8056 | bool CheckNumArgs(const analyze_format_string::FormatSpecifier &FS, |
8057 | const analyze_format_string::ConversionSpecifier &CS, |
8058 | const char *startSpecifier, unsigned specifierLen, |
8059 | unsigned argIndex); |
8060 | |
8061 | template <typename Range> |
8062 | void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc, |
8063 | bool IsStringLocation, Range StringRange, |
8064 | ArrayRef<FixItHint> Fixit = None); |
8065 | }; |
8066 | |
8067 | } |
8068 | |
8069 | SourceRange CheckFormatHandler::getFormatStringRange() { |
8070 | return OrigFormatExpr->getSourceRange(); |
8071 | } |
8072 | |
8073 | CharSourceRange CheckFormatHandler:: |
8074 | getSpecifierRange(const char *startSpecifier, unsigned specifierLen) { |
8075 | SourceLocation Start = getLocationOfByte(startSpecifier); |
8076 | SourceLocation End = getLocationOfByte(startSpecifier + specifierLen - 1); |
8077 | |
8078 | |
8079 | End = End.getLocWithOffset(1); |
8080 | |
8081 | return CharSourceRange::getCharRange(Start, End); |
8082 | } |
8083 | |
8084 | SourceLocation CheckFormatHandler::getLocationOfByte(const char *x) { |
8085 | return FExpr->getLocationOfByte(x - Beg, S.getSourceManager(), |
8086 | S.getLangOpts(), S.Context.getTargetInfo()); |
8087 | } |
8088 | |
8089 | void CheckFormatHandler::HandleIncompleteSpecifier(const char *startSpecifier, |
8090 | unsigned specifierLen){ |
8091 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_incomplete_specifier), |
8092 | getLocationOfByte(startSpecifier), |
8093 | true, |
8094 | getSpecifierRange(startSpecifier, specifierLen)); |
8095 | } |
8096 | |
8097 | void CheckFormatHandler::HandleInvalidLengthModifier( |
8098 | const analyze_format_string::FormatSpecifier &FS, |
8099 | const analyze_format_string::ConversionSpecifier &CS, |
8100 | const char *startSpecifier, unsigned specifierLen, unsigned DiagID) { |
8101 | using namespace analyze_format_string; |
8102 | |
8103 | const LengthModifier &LM = FS.getLengthModifier(); |
8104 | CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); |
8105 | |
8106 | |
8107 | Optional<LengthModifier> FixedLM = FS.getCorrectedLengthModifier(); |
8108 | if (FixedLM) { |
8109 | EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), |
8110 | getLocationOfByte(LM.getStart()), |
8111 | true, |
8112 | getSpecifierRange(startSpecifier, specifierLen)); |
8113 | |
8114 | S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) |
8115 | << FixedLM->toString() |
8116 | << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); |
8117 | |
8118 | } else { |
8119 | FixItHint Hint; |
8120 | if (DiagID == diag::warn_format_nonsensical_length) |
8121 | Hint = FixItHint::CreateRemoval(LMRange); |
8122 | |
8123 | EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), |
8124 | getLocationOfByte(LM.getStart()), |
8125 | true, |
8126 | getSpecifierRange(startSpecifier, specifierLen), |
8127 | Hint); |
8128 | } |
8129 | } |
8130 | |
8131 | void CheckFormatHandler::HandleNonStandardLengthModifier( |
8132 | const analyze_format_string::FormatSpecifier &FS, |
8133 | const char *startSpecifier, unsigned specifierLen) { |
8134 | using namespace analyze_format_string; |
8135 | |
8136 | const LengthModifier &LM = FS.getLengthModifier(); |
8137 | CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); |
8138 | |
8139 | |
8140 | Optional<LengthModifier> FixedLM = FS.getCorrectedLengthModifier(); |
8141 | if (FixedLM) { |
8142 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8143 | << LM.toString() << 0, |
8144 | getLocationOfByte(LM.getStart()), |
8145 | true, |
8146 | getSpecifierRange(startSpecifier, specifierLen)); |
8147 | |
8148 | S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) |
8149 | << FixedLM->toString() |
8150 | << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); |
8151 | |
8152 | } else { |
8153 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8154 | << LM.toString() << 0, |
8155 | getLocationOfByte(LM.getStart()), |
8156 | true, |
8157 | getSpecifierRange(startSpecifier, specifierLen)); |
8158 | } |
8159 | } |
8160 | |
8161 | void CheckFormatHandler::HandleNonStandardConversionSpecifier( |
8162 | const analyze_format_string::ConversionSpecifier &CS, |
8163 | const char *startSpecifier, unsigned specifierLen) { |
8164 | using namespace analyze_format_string; |
8165 | |
8166 | |
8167 | Optional<ConversionSpecifier> FixedCS = CS.getStandardSpecifier(); |
8168 | if (FixedCS) { |
8169 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8170 | << CS.toString() << 1, |
8171 | getLocationOfByte(CS.getStart()), |
8172 | true, |
8173 | getSpecifierRange(startSpecifier, specifierLen)); |
8174 | |
8175 | CharSourceRange CSRange = getSpecifierRange(CS.getStart(), CS.getLength()); |
8176 | S.Diag(getLocationOfByte(CS.getStart()), diag::note_format_fix_specifier) |
8177 | << FixedCS->toString() |
8178 | << FixItHint::CreateReplacement(CSRange, FixedCS->toString()); |
8179 | } else { |
8180 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) |
8181 | << CS.toString() << 1, |
8182 | getLocationOfByte(CS.getStart()), |
8183 | true, |
8184 | getSpecifierRange(startSpecifier, specifierLen)); |
8185 | } |
8186 | } |
8187 | |
8188 | void CheckFormatHandler::HandlePosition(const char *startPos, |
8189 | unsigned posLen) { |
8190 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard_positional_arg), |
8191 | getLocationOfByte(startPos), |
8192 | true, |
8193 | getSpecifierRange(startPos, posLen)); |
8194 | } |
8195 | |
8196 | void |
8197 | CheckFormatHandler::HandleInvalidPosition(const char *startPos, unsigned posLen, |
8198 | analyze_format_string::PositionContext p) { |
8199 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_positional_specifier) |
8200 | << (unsigned) p, |
8201 | getLocationOfByte(startPos), true, |
8202 | getSpecifierRange(startPos, posLen)); |
8203 | } |
8204 | |
8205 | void CheckFormatHandler::HandleZeroPosition(const char *startPos, |
8206 | unsigned posLen) { |
8207 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_zero_positional_specifier), |
8208 | getLocationOfByte(startPos), |
8209 | true, |
8210 | getSpecifierRange(startPos, posLen)); |
8211 | } |
8212 | |
8213 | void CheckFormatHandler::HandleNullChar(const char *nullCharacter) { |
8214 | if (!isa<ObjCStringLiteral>(OrigFormatExpr)) { |
8215 | |
8216 | EmitFormatDiagnostic( |
8217 | S.PDiag(diag::warn_printf_format_string_contains_null_char), |
8218 | getLocationOfByte(nullCharacter), true, |
8219 | getFormatStringRange()); |
8220 | } |
8221 | } |
8222 | |
8223 | |
8224 | |
8225 | const Expr *CheckFormatHandler::getDataArg(unsigned i) const { |
8226 | return Args[FirstDataArg + i]; |
8227 | } |
8228 | |
8229 | void CheckFormatHandler::DoneProcessing() { |
8230 | |
8231 | |
8232 | if (!HasVAListArg) { |
8233 | |
8234 | CoveredArgs.flip(); |
8235 | signed notCoveredArg = CoveredArgs.find_first(); |
8236 | if (notCoveredArg >= 0) { |
8237 | assert((unsigned)notCoveredArg < NumDataArgs); |
8238 | UncoveredArg.Update(notCoveredArg, OrigFormatExpr); |
8239 | } else { |
8240 | UncoveredArg.setAllCovered(); |
8241 | } |
8242 | } |
8243 | } |
8244 | |
8245 | void UncoveredArgHandler::Diagnose(Sema &S, bool IsFunctionCall, |
8246 | const Expr *ArgExpr) { |
8247 | assert(hasUncoveredArg() && DiagnosticExprs.size() > 0 && |
8248 | "Invalid state"); |
8249 | |
8250 | if (!ArgExpr) |
8251 | return; |
8252 | |
8253 | SourceLocation Loc = ArgExpr->getBeginLoc(); |
8254 | |
8255 | if (S.getSourceManager().isInSystemMacro(Loc)) |
8256 | return; |
8257 | |
8258 | PartialDiagnostic PDiag = S.PDiag(diag::warn_printf_data_arg_not_used); |
8259 | for (auto E : DiagnosticExprs) |
8260 | PDiag << E->getSourceRange(); |
8261 | |
8262 | CheckFormatHandler::EmitFormatDiagnostic( |
8263 | S, IsFunctionCall, DiagnosticExprs[0], |
8264 | PDiag, Loc, false, |
8265 | DiagnosticExprs[0]->getSourceRange()); |
8266 | } |
8267 | |
8268 | bool |
8269 | CheckFormatHandler::HandleInvalidConversionSpecifier(unsigned argIndex, |
8270 | SourceLocation Loc, |
8271 | const char *startSpec, |
8272 | unsigned specifierLen, |
8273 | const char *csStart, |
8274 | unsigned csLen) { |
8275 | bool keepGoing = true; |
8276 | if (argIndex < NumDataArgs) { |
8277 | |
8278 | |
8279 | CoveredArgs.set(argIndex); |
8280 | } |
8281 | else { |
8282 | |
8283 | |
8284 | |
8285 | |
8286 | |
8287 | keepGoing = false; |
8288 | } |
8289 | |
8290 | StringRef Specifier(csStart, csLen); |
8291 | |
8292 | |
8293 | |
8294 | |
8295 | std::string CodePointStr; |
8296 | if (!llvm::sys::locale::isPrint(*csStart)) { |
8297 | llvm::UTF32 CodePoint; |
8298 | const llvm::UTF8 **B = reinterpret_cast<const llvm::UTF8 **>(&csStart); |
8299 | const llvm::UTF8 *E = |
8300 | reinterpret_cast<const llvm::UTF8 *>(csStart + csLen); |
8301 | llvm::ConversionResult Result = |
8302 | llvm::convertUTF8Sequence(B, E, &CodePoint, llvm::strictConversion); |
8303 | |
8304 | if (Result != llvm::conversionOK) { |
8305 | unsigned char FirstChar = *csStart; |
8306 | CodePoint = (llvm::UTF32)FirstChar; |
8307 | } |
8308 | |
8309 | llvm::raw_string_ostream OS(CodePointStr); |
8310 | if (CodePoint < 256) |
8311 | OS << "\\x" << llvm::format("%02x", CodePoint); |
8312 | else if (CodePoint <= 0xFFFF) |
8313 | OS << "\\u" << llvm::format("%04x", CodePoint); |
8314 | else |
8315 | OS << "\\U" << llvm::format("%08x", CodePoint); |
8316 | OS.flush(); |
8317 | Specifier = CodePointStr; |
8318 | } |
8319 | |
8320 | EmitFormatDiagnostic( |
8321 | S.PDiag(diag::warn_format_invalid_conversion) << Specifier, Loc, |
8322 | true, getSpecifierRange(startSpec, specifierLen)); |
8323 | |
8324 | return keepGoing; |
8325 | } |
8326 | |
8327 | void |
8328 | CheckFormatHandler::HandlePositionalNonpositionalArgs(SourceLocation Loc, |
8329 | const char *startSpec, |
8330 | unsigned specifierLen) { |
8331 | EmitFormatDiagnostic( |
8332 | S.PDiag(diag::warn_format_mix_positional_nonpositional_args), |
8333 | Loc, true, getSpecifierRange(startSpec, specifierLen)); |
8334 | } |
8335 | |
8336 | bool |
8337 | CheckFormatHandler::CheckNumArgs( |
8338 | const analyze_format_string::FormatSpecifier &FS, |
8339 | const analyze_format_string::ConversionSpecifier &CS, |
8340 | const char *startSpecifier, unsigned specifierLen, unsigned argIndex) { |
8341 | |
8342 | if (argIndex >= NumDataArgs) { |
8343 | PartialDiagnostic PDiag = FS.usesPositionalArg() |
8344 | ? (S.PDiag(diag::warn_printf_positional_arg_exceeds_data_args) |
8345 | << (argIndex+1) << NumDataArgs) |
8346 | : S.PDiag(diag::warn_printf_insufficient_data_args); |
8347 | EmitFormatDiagnostic( |
8348 | PDiag, getLocationOfByte(CS.getStart()), true, |
8349 | getSpecifierRange(startSpecifier, specifierLen)); |
8350 | |
8351 | |
8352 | |
8353 | UncoveredArg.setAllCovered(); |
8354 | return false; |
8355 | } |
8356 | return true; |
8357 | } |
8358 | |
8359 | template<typename Range> |
8360 | void CheckFormatHandler::EmitFormatDiagnostic(PartialDiagnostic PDiag, |
8361 | SourceLocation Loc, |
8362 | bool IsStringLocation, |
8363 | Range StringRange, |
8364 | ArrayRef<FixItHint> FixIt) { |
8365 | EmitFormatDiagnostic(S, inFunctionCall, Args[FormatIdx], PDiag, |
8366 | Loc, IsStringLocation, StringRange, FixIt); |
8367 | } |
8368 | |
8369 | |
8370 | |
8371 | |
8372 | |
8373 | |
8374 | |
8375 | |
8376 | |
8377 | |
8378 | |
8379 | |
8380 | |
8381 | |
8382 | |
8383 | |
8384 | |
8385 | |
8386 | |
8387 | |
8388 | |
8389 | |
8390 | |
8391 | |
8392 | |
8393 | |
8394 | |
8395 | |
8396 | template <typename Range> |
8397 | void CheckFormatHandler::EmitFormatDiagnostic( |
8398 | Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, |
8399 | const PartialDiagnostic &PDiag, SourceLocation Loc, bool IsStringLocation, |
8400 | Range StringRange, ArrayRef<FixItHint> FixIt) { |
8401 | if (InFunctionCall) { |
8402 | const Sema::SemaDiagnosticBuilder &D = S.Diag(Loc, PDiag); |
8403 | D << StringRange; |
8404 | D << FixIt; |
8405 | } else { |
8406 | S.Diag(IsStringLocation ? ArgumentExpr->getExprLoc() : Loc, PDiag) |
8407 | << ArgumentExpr->getSourceRange(); |
8408 | |
8409 | const Sema::SemaDiagnosticBuilder &Note = |
8410 | S.Diag(IsStringLocation ? Loc : StringRange.getBegin(), |
8411 | diag::note_format_string_defined); |
8412 | |
8413 | Note << StringRange; |
8414 | Note << FixIt; |
8415 | } |
8416 | } |
8417 | |
8418 | |
8419 | |
8420 | namespace { |
8421 | |
8422 | class CheckPrintfHandler : public CheckFormatHandler { |
8423 | public: |
8424 | CheckPrintfHandler(Sema &s, const FormatStringLiteral *fexpr, |
8425 | const Expr *origFormatExpr, |
8426 | const Sema::FormatStringType type, unsigned firstDataArg, |
8427 | unsigned numDataArgs, bool isObjC, const char *beg, |
8428 | bool hasVAListArg, ArrayRef<const Expr *> Args, |
8429 | unsigned formatIdx, bool inFunctionCall, |
8430 | Sema::VariadicCallType CallType, |
8431 | llvm::SmallBitVector &CheckedVarArgs, |
8432 | UncoveredArgHandler &UncoveredArg) |
8433 | : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, |
8434 | numDataArgs, beg, hasVAListArg, Args, formatIdx, |
8435 | inFunctionCall, CallType, CheckedVarArgs, |
8436 | UncoveredArg) {} |
8437 | |
8438 | bool isObjCContext() const { return FSType == Sema::FST_NSString; } |
8439 | |
8440 | |
8441 | bool allowsObjCArg() const { |
8442 | return FSType == Sema::FST_NSString || FSType == Sema::FST_OSLog || |
8443 | FSType == Sema::FST_OSTrace; |
8444 | } |
8445 | |
8446 | bool HandleInvalidPrintfConversionSpecifier( |
8447 | const analyze_printf::PrintfSpecifier &FS, |
8448 | const char *startSpecifier, |
8449 | unsigned specifierLen) override; |
8450 | |
8451 | void handleInvalidMaskType(StringRef MaskType) override; |
8452 | |
8453 | bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, |
8454 | const char *startSpecifier, |
8455 | unsigned specifierLen) override; |
8456 | bool checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, |
8457 | const char *StartSpecifier, |
8458 | unsigned SpecifierLen, |
8459 | const Expr *E); |
8460 | |
8461 | bool HandleAmount(const analyze_format_string::OptionalAmount &Amt, unsigned k, |
8462 | const char *startSpecifier, unsigned specifierLen); |
8463 | void HandleInvalidAmount(const analyze_printf::PrintfSpecifier &FS, |
8464 | const analyze_printf::OptionalAmount &Amt, |
8465 | unsigned type, |
8466 | const char *startSpecifier, unsigned specifierLen); |
8467 | void HandleFlag(const analyze_printf::PrintfSpecifier &FS, |
8468 | const analyze_printf::OptionalFlag &flag, |
8469 | const char *startSpecifier, unsigned specifierLen); |
8470 | void HandleIgnoredFlag(const analyze_printf::PrintfSpecifier &FS, |
8471 | const analyze_printf::OptionalFlag &ignoredFlag, |
8472 | const analyze_printf::OptionalFlag &flag, |
8473 | const char *startSpecifier, unsigned specifierLen); |
8474 | bool checkForCStrMembers(const analyze_printf::ArgType &AT, |
8475 | const Expr *E); |
8476 | |
8477 | void HandleEmptyObjCModifierFlag(const char *startFlag, |
8478 | unsigned flagLen) override; |
8479 | |
8480 | void HandleInvalidObjCModifierFlag(const char *startFlag, |
8481 | unsigned flagLen) override; |
8482 | |
8483 | void HandleObjCFlagsWithNonObjCConversion(const char *flagsStart, |
8484 | const char *flagsEnd, |
8485 | const char *conversionPosition) |
8486 | override; |
8487 | }; |
8488 | |
8489 | } |
8490 | |
8491 | bool CheckPrintfHandler::HandleInvalidPrintfConversionSpecifier( |
8492 | const analyze_printf::PrintfSpecifier &FS, |
8493 | const char *startSpecifier, |
8494 | unsigned specifierLen) { |
8495 | const analyze_printf::PrintfConversionSpecifier &CS = |
8496 | FS.getConversionSpecifier(); |
8497 | |
8498 | return HandleInvalidConversionSpecifier(FS.getArgIndex(), |
8499 | getLocationOfByte(CS.getStart()), |
8500 | startSpecifier, specifierLen, |
8501 | CS.getStart(), CS.getLength()); |
8502 | } |
8503 | |
8504 | void CheckPrintfHandler::handleInvalidMaskType(StringRef MaskType) { |
8505 | S.Diag(getLocationOfByte(MaskType.data()), diag::err_invalid_mask_type_size); |
8506 | } |
8507 | |
8508 | bool CheckPrintfHandler::HandleAmount( |
8509 | const analyze_format_string::OptionalAmount &Amt, |
8510 | unsigned k, const char *startSpecifier, |
8511 | unsigned specifierLen) { |
8512 | if (Amt.hasDataArgument()) { |
8513 | if (!HasVAListArg) { |
8514 | unsigned argIndex = Amt.getArgIndex(); |
8515 | if (argIndex >= NumDataArgs) { |
8516 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_missing_arg) |
8517 | << k, |
8518 | getLocationOfByte(Amt.getStart()), |
8519 | true, |
8520 | getSpecifierRange(startSpecifier, specifierLen)); |
8521 | |
8522 | |
8523 | return false; |
8524 | } |
8525 | |
8526 | |
8527 | |
8528 | |
8529 | |
8530 | CoveredArgs.set(argIndex); |
8531 | const Expr *Arg = getDataArg(argIndex); |
8532 | if (!Arg) |
8533 | return false; |
8534 | |
8535 | QualType T = Arg->getType(); |
8536 | |
8537 | const analyze_printf::ArgType &AT = Amt.getArgType(S.Context); |
8538 | assert(AT.isValid()); |
8539 | |
8540 | if (!AT.matchesType(S.Context, T)) { |
8541 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_wrong_type) |
8542 | << k << AT.getRepresentativeTypeName(S.Context) |
8543 | << T << Arg->getSourceRange(), |
8544 | getLocationOfByte(Amt.getStart()), |
8545 | true, |
8546 | getSpecifierRange(startSpecifier, specifierLen)); |
8547 | |
8548 | |
8549 | return false; |
8550 | } |
8551 | } |
8552 | } |
8553 | return true; |
8554 | } |
8555 | |
8556 | void CheckPrintfHandler::HandleInvalidAmount( |
8557 | const analyze_printf::PrintfSpecifier &FS, |
8558 | const analyze_printf::OptionalAmount &Amt, |
8559 | unsigned type, |
8560 | const char *startSpecifier, |
8561 | unsigned specifierLen) { |
8562 | const analyze_printf::PrintfConversionSpecifier &CS = |
8563 | FS.getConversionSpecifier(); |
8564 | |
8565 | FixItHint fixit = |
8566 | Amt.getHowSpecified() == analyze_printf::OptionalAmount::Constant |
8567 | ? FixItHint::CreateRemoval(getSpecifierRange(Amt.getStart(), |
8568 | Amt.getConstantLength())) |
8569 | : FixItHint(); |
8570 | |
8571 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_optional_amount) |
8572 | << type << CS.toString(), |
8573 | getLocationOfByte(Amt.getStart()), |
8574 | true, |
8575 | getSpecifierRange(startSpecifier, specifierLen), |
8576 | fixit); |
8577 | } |
8578 | |
8579 | void CheckPrintfHandler::HandleFlag(const analyze_printf::PrintfSpecifier &FS, |
8580 | const analyze_printf::OptionalFlag &flag, |
8581 | const char *startSpecifier, |
8582 | unsigned specifierLen) { |
8583 | |
8584 | const analyze_printf::PrintfConversionSpecifier &CS = |
8585 | FS.getConversionSpecifier(); |
8586 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_flag) |
8587 | << flag.toString() << CS.toString(), |
8588 | getLocationOfByte(flag.getPosition()), |
8589 | true, |
8590 | getSpecifierRange(startSpecifier, specifierLen), |
8591 | FixItHint::CreateRemoval( |
8592 | getSpecifierRange(flag.getPosition(), 1))); |
8593 | } |
8594 | |
8595 | void CheckPrintfHandler::HandleIgnoredFlag( |
8596 | const analyze_printf::PrintfSpecifier &FS, |
8597 | const analyze_printf::OptionalFlag &ignoredFlag, |
8598 | const analyze_printf::OptionalFlag &flag, |
8599 | const char *startSpecifier, |
8600 | unsigned specifierLen) { |
8601 | |
8602 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_ignored_flag) |
8603 | << ignoredFlag.toString() << flag.toString(), |
8604 | getLocationOfByte(ignoredFlag.getPosition()), |
8605 | true, |
8606 | getSpecifierRange(startSpecifier, specifierLen), |
8607 | FixItHint::CreateRemoval( |
8608 | getSpecifierRange(ignoredFlag.getPosition(), 1))); |
8609 | } |
8610 | |
8611 | void CheckPrintfHandler::HandleEmptyObjCModifierFlag(const char *startFlag, |
8612 | unsigned flagLen) { |
8613 | |
8614 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_empty_objc_flag), |
8615 | getLocationOfByte(startFlag), |
8616 | true, |
8617 | getSpecifierRange(startFlag, flagLen)); |
8618 | } |
8619 | |
8620 | void CheckPrintfHandler::HandleInvalidObjCModifierFlag(const char *startFlag, |
8621 | unsigned flagLen) { |
8622 | |
8623 | auto Range = getSpecifierRange(startFlag, flagLen); |
8624 | StringRef flag(startFlag, flagLen); |
8625 | EmitFormatDiagnostic(S.PDiag(diag::warn_printf_invalid_objc_flag) << flag, |
8626 | getLocationOfByte(startFlag), |
8627 | true, |
8628 | Range, FixItHint::CreateRemoval(Range)); |
8629 | } |
8630 | |
8631 | void CheckPrintfHandler::HandleObjCFlagsWithNonObjCConversion( |
8632 | const char *flagsStart, const char *flagsEnd, const char *conversionPosition) { |
8633 | |
8634 | auto Range = getSpecifierRange(flagsStart, flagsEnd - flagsStart + 1); |
8635 | auto diag = diag::warn_printf_ObjCflags_without_ObjCConversion; |
8636 | EmitFormatDiagnostic(S.PDiag(diag) << StringRef(conversionPosition, 1), |
8637 | getLocationOfByte(conversionPosition), |
8638 | true, |
8639 | Range, FixItHint::CreateRemoval(Range)); |
8640 | } |
8641 | |
8642 | |
8643 | |
8644 | |
8645 | template<typename MemberKind> |
8646 | static llvm::SmallPtrSet<MemberKind*, 1> |
8647 | CXXRecordMembersNamed(StringRef Name, Sema &S, QualType Ty) { |
8648 | const RecordType *RT = Ty->getAs<RecordType>(); |
8649 | llvm::SmallPtrSet<MemberKind*, 1> Results; |
8650 | |
8651 | if (!RT) |
8652 | return Results; |
8653 | const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl()); |
8654 | if (!RD || !RD->getDefinition()) |
8655 | return Results; |
8656 | |
8657 | LookupResult R(S, &S.Context.Idents.get(Name), SourceLocation(), |
8658 | Sema::LookupMemberName); |
8659 | R.suppressDiagnostics(); |
8660 | |
8661 | |
8662 | |
8663 | if (S.LookupQualifiedName(R, RT->getDecl())) |
8664 | for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) { |
8665 | NamedDecl *decl = (*I)->getUnderlyingDecl(); |
8666 | if (MemberKind *FK = dyn_cast<MemberKind>(decl)) |
8667 | Results.insert(FK); |
8668 | } |
8669 | return Results; |
8670 | } |
8671 | |
8672 | |
8673 | |
8674 | |
8675 | |
8676 | bool Sema::hasCStrMethod(const Expr *E) { |
8677 | using MethodSet = llvm::SmallPtrSet<CXXMethodDecl *, 1>; |
8678 | |
8679 | MethodSet Results = |
8680 | CXXRecordMembersNamed<CXXMethodDecl>("c_str", *this, E->getType()); |
8681 | for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); |
8682 | MI != ME; ++MI) |
8683 | if ((*MI)->getMinRequiredArguments() == 0) |
8684 | return true; |
8685 | return false; |
8686 | } |
8687 | |
8688 | |
8689 | |
8690 | |
8691 | bool CheckPrintfHandler::checkForCStrMembers( |
8692 | const analyze_printf::ArgType &AT, const Expr *E) { |
8693 | using MethodSet = llvm::SmallPtrSet<CXXMethodDecl *, 1>; |
8694 | |
8695 | MethodSet Results = |
8696 | CXXRecordMembersNamed<CXXMethodDecl>("c_str", S, E->getType()); |
8697 | |
8698 | for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); |
8699 | MI != ME; ++MI) { |
8700 | const CXXMethodDecl *Method = *MI; |
8701 | if (Method->getMinRequiredArguments() == 0 && |
8702 | AT.matchesType(S.Context, Method->getReturnType())) { |
8703 | |
8704 | SourceLocation EndLoc = S.getLocForEndOfToken(E->getEndLoc()); |
8705 | S.Diag(E->getBeginLoc(), diag::note_printf_c_str) |
8706 | << "c_str()" << FixItHint::CreateInsertion(EndLoc, ".c_str()"); |
8707 | return true; |
8708 | } |
8709 | } |
8710 | |
8711 | return false; |
8712 | } |
8713 | |
8714 | bool |
8715 | CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier |
8716 | &FS, |
8717 | const char *startSpecifier, |
8718 | unsigned specifierLen) { |
8719 | using namespace analyze_format_string; |
8720 | using namespace analyze_printf; |
8721 | |
8722 | const PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); |
8723 | |
8724 | if (FS.consumesDataArgument()) { |
8725 | if (atFirstArg) { |
8726 | atFirstArg = false; |
8727 | usesPositionalArgs = FS.usesPositionalArg(); |
8728 | } |
8729 | else if (usesPositionalArgs != FS.usesPositionalArg()) { |
8730 | HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), |
8731 | startSpecifier, specifierLen); |
8732 | return false; |
8733 | } |
8734 | } |
8735 | |
8736 | |
8737 | |
8738 | if (!HandleAmount(FS.getFieldWidth(), 0, |
8739 | startSpecifier, specifierLen)) { |
8740 | return false; |
8741 | } |
8742 | |
8743 | if (!HandleAmount(FS.getPrecision(), 1, |
8744 | startSpecifier, specifierLen)) { |
8745 | return false; |
8746 | } |
8747 | |
8748 | if (!CS.consumesDataArgument()) { |
8749 | |
8750 | |
8751 | return true; |
8752 | } |
8753 | |
8754 | |
8755 | unsigned argIndex = FS.getArgIndex(); |
8756 | if (argIndex < NumDataArgs) { |
8757 | |
8758 | |
8759 | |
8760 | CoveredArgs.set(argIndex); |
8761 | } |
8762 | |
8763 | |
8764 | if (CS.getKind() == ConversionSpecifier::FreeBSDbArg || |
8765 | CS.getKind() == ConversionSpecifier::FreeBSDDArg) { |
8766 | |
8767 | if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex + 1)) |
8768 | return false; |
8769 | |
8770 | |
8771 | CoveredArgs.set(argIndex + 1); |
8772 | |
8773 | const Expr *Ex = getDataArg(argIndex); |
8774 | if (CS.getKind() == ConversionSpecifier::FreeBSDDArg) { |
8775 | |
8776 | const analyze_printf::ArgType &AT = ArgType::CPointerTy; |
8777 | if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType())) |
8778 | EmitFormatDiagnostic( |
8779 | S.PDiag(diag::warn_format_conversion_argument_type_mismatch) |
8780 | << AT.getRepresentativeTypeName(S.Context) << Ex->getType() |
8781 | << false << Ex->getSourceRange(), |
8782 | Ex->getBeginLoc(), false, |
8783 | getSpecifierRange(startSpecifier, specifierLen)); |
8784 | } else { |
8785 | |
8786 | if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(), |
8787 | S.getLangOpts())) |
8788 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
8789 | diag::warn_format_nonsensical_length); |
8790 | else if (!FS.hasStandardLengthModifier()) |
8791 | HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); |
8792 | else if (!FS.hasStandardLengthConversionCombination()) |
8793 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
8794 | diag::warn_format_non_standard_conversion_spec); |
8795 | |
8796 | |
8797 | if (!checkFormatExpr(FS, startSpecifier, specifierLen, Ex)) |
8798 | return false; |
8799 | } |
8800 | |
8801 | |
8802 | Ex = getDataArg(argIndex + 1); |
8803 | const analyze_printf::ArgType &AT2 = ArgType::CStrTy; |
8804 | if (AT2.isValid() && !AT2.matchesType(S.Context, Ex->getType())) |
8805 | EmitFormatDiagnostic( |
8806 | S.PDiag(diag::warn_format_conversion_argument_type_mismatch) |
8807 | << AT2.getRepresentativeTypeName(S.Context) << Ex->getType() |
8808 | << false << Ex->getSourceRange(), |
8809 | Ex->getBeginLoc(), false, |
8810 | getSpecifierRange(startSpecifier, specifierLen)); |
8811 | |
8812 | return true; |
8813 | } |
8814 | |
8815 | |
8816 | |
8817 | if (!allowsObjCArg() && CS.isObjCArg()) { |
8818 | return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, |
8819 | specifierLen); |
8820 | } |
8821 | |
8822 | |
8823 | if (FSType != Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::PArg) { |
8824 | return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, |
8825 | specifierLen); |
8826 | } |
8827 | |
8828 | |
8829 | if (FSType == Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::nArg) { |
8830 | EmitFormatDiagnostic(S.PDiag(diag::warn_os_log_format_narg), |
8831 | getLocationOfByte(CS.getStart()), |
8832 | false, |
8833 | getSpecifierRange(startSpecifier, specifierLen)); |
8834 | |
8835 | return true; |
8836 | } |
8837 | |
8838 | |
8839 | if (CS.getKind() == ConversionSpecifier::nArg) { |
8840 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_narg), |
8841 | getLocationOfByte(CS.getStart()), |
8842 | false, |
8843 | getSpecifierRange(startSpecifier, specifierLen)); |
8844 | return true; |
8845 | } |
8846 | |
8847 | |
8848 | if (FSType == Sema::FST_OSTrace && |
8849 | (CS.getKind() == ConversionSpecifier::PArg || |
8850 | CS.getKind() == ConversionSpecifier::sArg || |
8851 | CS.getKind() == ConversionSpecifier::ObjCObjArg)) { |
8852 | return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, |
8853 | specifierLen); |
8854 | } |
8855 | |
8856 | |
8857 | if (FSType != Sema::FST_OSLog) { |
8858 | if (FS.isPublic().isSet()) { |
8859 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) |
8860 | << "public", |
8861 | getLocationOfByte(FS.isPublic().getPosition()), |
8862 | false, |
8863 | getSpecifierRange(startSpecifier, specifierLen)); |
8864 | } |
8865 | if (FS.isPrivate().isSet()) { |
8866 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) |
8867 | << "private", |
8868 | getLocationOfByte(FS.isPrivate().getPosition()), |
8869 | false, |
8870 | getSpecifierRange(startSpecifier, specifierLen)); |
8871 | } |
8872 | } |
8873 | |
8874 | |
8875 | if (!FS.hasValidFieldWidth()) { |
8876 | HandleInvalidAmount(FS, FS.getFieldWidth(), 0, |
8877 | startSpecifier, specifierLen); |
8878 | } |
8879 | |
8880 | |
8881 | if (!FS.hasValidPrecision()) { |
8882 | HandleInvalidAmount(FS, FS.getPrecision(), 1, |
8883 | startSpecifier, specifierLen); |
8884 | } |
8885 | |
8886 | |
8887 | if (CS.getKind() == ConversionSpecifier::PArg && |
8888 | FS.getPrecision().getHowSpecified() == OptionalAmount::NotSpecified) { |
8889 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_P_no_precision), |
8890 | getLocationOfByte(startSpecifier), |
8891 | false, |
8892 | getSpecifierRange(startSpecifier, specifierLen)); |
8893 | } |
8894 | |
8895 | |
8896 | if (!FS.hasValidThousandsGroupingPrefix()) |
8897 | HandleFlag(FS, FS.hasThousandsGrouping(), startSpecifier, specifierLen); |
8898 | if (!FS.hasValidLeadingZeros()) |
8899 | HandleFlag(FS, FS.hasLeadingZeros(), startSpecifier, specifierLen); |
8900 | if (!FS.hasValidPlusPrefix()) |
8901 | HandleFlag(FS, FS.hasPlusPrefix(), startSpecifier, specifierLen); |
8902 | if (!FS.hasValidSpacePrefix()) |
8903 | HandleFlag(FS, FS.hasSpacePrefix(), startSpecifier, specifierLen); |
8904 | if (!FS.hasValidAlternativeForm()) |
8905 | HandleFlag(FS, FS.hasAlternativeForm(), startSpecifier, specifierLen); |
8906 | if (!FS.hasValidLeftJustified()) |
8907 | HandleFlag(FS, FS.isLeftJustified(), startSpecifier, specifierLen); |
8908 | |
8909 | |
8910 | if (FS.hasSpacePrefix() && FS.hasPlusPrefix()) |
8911 | HandleIgnoredFlag(FS, FS.hasSpacePrefix(), FS.hasPlusPrefix(), |
8912 | startSpecifier, specifierLen); |
8913 | if (FS.hasLeadingZeros() && FS.isLeftJustified()) |
8914 | HandleIgnoredFlag(FS, FS.hasLeadingZeros(), FS.isLeftJustified(), |
8915 | startSpecifier, specifierLen); |
8916 | |
8917 | |
8918 | if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(), |
8919 | S.getLangOpts())) |
8920 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
8921 | diag::warn_format_nonsensical_length); |
8922 | else if (!FS.hasStandardLengthModifier()) |
8923 | HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); |
8924 | else if (!FS.hasStandardLengthConversionCombination()) |
8925 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
8926 | diag::warn_format_non_standard_conversion_spec); |
8927 | |
8928 | if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) |
8929 | HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); |
8930 | |
8931 | |
8932 | if (HasVAListArg) |
8933 | return true; |
8934 | |
8935 | if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) |
8936 | return false; |
8937 | |
8938 | const Expr *Arg = getDataArg(argIndex); |
8939 | if (!Arg) |
8940 | return true; |
8941 | |
8942 | return checkFormatExpr(FS, startSpecifier, specifierLen, Arg); |
8943 | } |
8944 | |
8945 | static bool requiresParensToAddCast(const Expr *E) { |
8946 | |
8947 | |
8948 | |
8949 | const Expr *Inside = E->IgnoreImpCasts(); |
8950 | if (const PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(Inside)) |
8951 | Inside = POE->getSyntacticForm()->IgnoreImpCasts(); |
8952 | |
8953 | switch (Inside->getStmtClass()) { |
8954 | case Stmt::ArraySubscriptExprClass: |
8955 | case Stmt::CallExprClass: |
8956 | case Stmt::CharacterLiteralClass: |
8957 | case Stmt::CXXBoolLiteralExprClass: |
8958 | case Stmt::DeclRefExprClass: |
8959 | case Stmt::FloatingLiteralClass: |
8960 | case Stmt::IntegerLiteralClass: |
8961 | case Stmt::MemberExprClass: |
8962 | case Stmt::ObjCArrayLiteralClass: |
8963 | case Stmt::ObjCBoolLiteralExprClass: |
8964 | case Stmt::ObjCBoxedExprClass: |
8965 | case Stmt::ObjCDictionaryLiteralClass: |
8966 | case Stmt::ObjCEncodeExprClass: |
8967 | case Stmt::ObjCIvarRefExprClass: |
8968 | case Stmt::ObjCMessageExprClass: |
8969 | case Stmt::ObjCPropertyRefExprClass: |
8970 | case Stmt::ObjCStringLiteralClass: |
8971 | case Stmt::ObjCSubscriptRefExprClass: |
8972 | case Stmt::ParenExprClass: |
8973 | case Stmt::StringLiteralClass: |
8974 | case Stmt::UnaryOperatorClass: |
8975 | return false; |
8976 | default: |
8977 | return true; |
8978 | } |
8979 | } |
8980 | |
8981 | static std::pair<QualType, StringRef> |
8982 | shouldNotPrintDirectly(const ASTContext &Context, |
8983 | QualType IntendedTy, |
8984 | const Expr *E) { |
8985 | |
8986 | QualType TyTy = IntendedTy; |
8987 | while (const TypedefType *UserTy = TyTy->getAs<TypedefType>()) { |
8988 | StringRef Name = UserTy->getDecl()->getName(); |
8989 | QualType CastTy = llvm::StringSwitch<QualType>(Name) |
8990 | .Case("CFIndex", Context.getNSIntegerType()) |
8991 | .Case("NSInteger", Context.getNSIntegerType()) |
8992 | .Case("NSUInteger", Context.getNSUIntegerType()) |
8993 | .Case("SInt32", Context.IntTy) |
8994 | .Case("UInt32", Context.UnsignedIntTy) |
8995 | .Default(QualType()); |
8996 | |
8997 | if (!CastTy.isNull()) |
8998 | return std::make_pair(CastTy, Name); |
8999 | |
9000 | TyTy = UserTy->desugar(); |
9001 | } |
9002 | |
9003 | |
9004 | if (const ParenExpr *PE = dyn_cast<ParenExpr>(E)) |
9005 | return shouldNotPrintDirectly(Context, |
9006 | PE->getSubExpr()->getType(), |
9007 | PE->getSubExpr()); |
9008 | |
9009 | |
9010 | |
9011 | |
9012 | |
9013 | if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) { |
9014 | QualType TrueTy, FalseTy; |
9015 | StringRef TrueName, FalseName; |
9016 | |
9017 | std::tie(TrueTy, TrueName) = |
9018 | shouldNotPrintDirectly(Context, |
9019 | CO->getTrueExpr()->getType(), |
9020 | CO->getTrueExpr()); |
9021 | std::tie(FalseTy, FalseName) = |
9022 | shouldNotPrintDirectly(Context, |
9023 | CO->getFalseExpr()->getType(), |
9024 | CO->getFalseExpr()); |
9025 | |
9026 | if (TrueTy == FalseTy) |
9027 | return std::make_pair(TrueTy, TrueName); |
9028 | else if (TrueTy.isNull()) |
9029 | return std::make_pair(FalseTy, FalseName); |
9030 | else if (FalseTy.isNull()) |
9031 | return std::make_pair(TrueTy, TrueName); |
9032 | } |
9033 | |
9034 | return std::make_pair(QualType(), StringRef()); |
9035 | } |
9036 | |
9037 | |
9038 | |
9039 | |
9040 | static bool |
9041 | isArithmeticArgumentPromotion(Sema &S, const ImplicitCastExpr *ICE) { |
9042 | QualType From = ICE->getSubExpr()->getType(); |
9043 | QualType To = ICE->getType(); |
9044 | |
9045 | |
9046 | if (ICE->getCastKind() == CK_IntegralCast && |
9047 | From->isPromotableIntegerType() && |
9048 | S.Context.getPromotedIntegerType(From) == To) |
9049 | return true; |
9050 | |
9051 | |
9052 | if (const auto *VecTy = From->getAs<ExtVectorType>()) |
9053 | From = VecTy->getElementType(); |
9054 | if (const auto *VecTy = To->getAs<ExtVectorType>()) |
9055 | To = VecTy->getElementType(); |
9056 | |
9057 | return ICE->getCastKind() == CK_FloatingCast && |
9058 | S.Context.getFloatingTypeOrder(From, To) < 0; |
9059 | } |
9060 | |
9061 | bool |
9062 | CheckPrintfHandler::checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, |
9063 | const char *StartSpecifier, |
9064 | unsigned SpecifierLen, |
9065 | const Expr *E) { |
9066 | using namespace analyze_format_string; |
9067 | using namespace analyze_printf; |
9068 | |
9069 | |
9070 | |
9071 | const analyze_printf::ArgType &AT = FS.getArgType(S.Context, isObjCContext()); |
9072 | if (!AT.isValid()) |
9073 | return true; |
9074 | |
9075 | QualType ExprTy = E->getType(); |
9076 | while (const TypeOfExprType *TET = dyn_cast<TypeOfExprType>(ExprTy)) { |
9077 | ExprTy = TET->getUnderlyingExpr()->getType(); |
9078 | } |
9079 | |
9080 | |
9081 | |
9082 | |
9083 | if (FS.getConversionSpecifier().getKind() == ConversionSpecifier::cArg && |
9084 | E->isKnownToHaveBooleanValue()) { |
9085 | const CharSourceRange &CSR = |
9086 | getSpecifierRange(StartSpecifier, SpecifierLen); |
9087 | SmallString<4> FSString; |
9088 | llvm::raw_svector_ostream os(FSString); |
9089 | FS.toString(os); |
9090 | EmitFormatDiagnostic(S.PDiag(diag::warn_format_bool_as_character) |
9091 | << FSString, |
9092 | E->getExprLoc(), false, CSR); |
9093 | return true; |
9094 | } |
9095 | |
9096 | analyze_printf::ArgType::MatchKind Match = AT.matchesType(S.Context, ExprTy); |
9097 | if (Match == analyze_printf::ArgType::Match) |
9098 | return true; |
9099 | |
9100 | |
9101 | |
9102 | |
9103 | |
9104 | |
9105 | if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { |
9106 | if (isArithmeticArgumentPromotion(S, ICE)) { |
9107 | E = ICE->getSubExpr(); |
9108 | ExprTy = E->getType(); |
9109 | |
9110 | |
9111 | |
9112 | |
9113 | if (ICE->getType() == S.Context.IntTy || |
9114 | ICE->getType() == S.Context.UnsignedIntTy) { |
9115 | |
9116 | const analyze_printf::ArgType::MatchKind ImplicitMatch = |
9117 | AT.matchesType(S.Context, ExprTy); |
9118 | if (ImplicitMatch == analyze_printf::ArgType::Match) |
9119 | return true; |
9120 | if (ImplicitMatch == ArgType::NoMatchPedantic || |
9121 | ImplicitMatch == ArgType::NoMatchTypeConfusion) |
9122 | Match = ImplicitMatch; |
9123 | } |
9124 | } |
9125 | } else if (const CharacterLiteral *CL = dyn_cast<CharacterLiteral>(E)) { |
9126 | |
9127 | |
9128 | |
9129 | |
9130 | |
9131 | if (ExprTy == S.Context.IntTy && |
9132 | FS.getLengthModifier().getKind() != LengthModifier::AsChar) |
9133 | if (llvm::isUIntN(S.Context.getCharWidth(), CL->getValue())) |
9134 | ExprTy = S.Context.CharTy; |
9135 | } |
9136 | |
9137 | |
9138 | bool IsEnum = false; |
9139 | if (auto EnumTy = ExprTy->getAs<EnumType>()) { |
9140 | ExprTy = EnumTy->getDecl()->getIntegerType(); |
9141 | IsEnum = true; |
9142 | } |
9143 | |
9144 | |
9145 | |
9146 | |
9147 | QualType IntendedTy = ExprTy; |
9148 | if (isObjCContext() && |
9149 | FS.getConversionSpecifier().getKind() == ConversionSpecifier::CArg) { |
9150 | if (ExprTy->isIntegralOrUnscopedEnumerationType() && |
9151 | !ExprTy->isCharType()) { |
9152 | |
9153 | |
9154 | IntendedTy = S.Context.UnsignedShortTy; |
9155 | |
9156 | |
9157 | |
9158 | if (const IntegerLiteral *IL = dyn_cast<IntegerLiteral>(E)) { |
9159 | const llvm::APInt &V = IL->getValue(); |
9160 | if (V.getActiveBits() <= S.Context.getTypeSize(IntendedTy)) |
9161 | return true; |
9162 | } |
9163 | |
9164 | LookupResult Result(S, &S.Context.Idents.get("unichar"), E->getBeginLoc(), |
9165 | Sema::LookupOrdinaryName); |
9166 | if (S.LookupName(Result, S.getCurScope())) { |
9167 | NamedDecl *ND = Result.getFoundDecl(); |
9168 | if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(ND)) |
9169 | if (TD->getUnderlyingType() == IntendedTy) |
9170 | IntendedTy = S.Context.getTypedefType(TD); |
9171 | } |
9172 | } |
9173 | } |
9174 | |
9175 | |
9176 | |
9177 | bool ShouldNotPrintDirectly = false; StringRef CastTyName; |
9178 | if (S.Context.getTargetInfo().getTriple().isOSDarwin()) { |
9179 | QualType CastTy; |
9180 | std::tie(CastTy, CastTyName) = shouldNotPrintDirectly(S.Context, IntendedTy, E); |
9181 | if (!CastTy.isNull()) { |
9182 | |
9183 | |
9184 | if ((CastTyName == "NSInteger" || CastTyName == "NSUInteger") && |
9185 | (AT.isSizeT() || AT.isPtrdiffT()) && |
9186 | AT.matchesType(S.Context, CastTy)) |
9187 | Match = ArgType::NoMatchPedantic; |
9188 | IntendedTy = CastTy; |
9189 | ShouldNotPrintDirectly = true; |
9190 | } |
9191 | } |
9192 | |
9193 | |
9194 | PrintfSpecifier fixedFS = FS; |
9195 | bool Success = |
9196 | fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, isObjCContext()); |
9197 | |
9198 | if (Success) { |
9199 | |
9200 | SmallString<16> buf; |
9201 | llvm::raw_svector_ostream os(buf); |
9202 | fixedFS.toString(os); |
9203 | |
9204 | CharSourceRange SpecRange = getSpecifierRange(StartSpecifier, SpecifierLen); |
9205 | |
9206 | if (IntendedTy == ExprTy && !ShouldNotPrintDirectly) { |
9207 | unsigned Diag; |
9208 | switch (Match) { |
9209 | case ArgType::Match: llvm_unreachable("expected non-matching"); |
9210 | case ArgType::NoMatchPedantic: |
9211 | Diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; |
9212 | break; |
9213 | case ArgType::NoMatchTypeConfusion: |
9214 | Diag = diag::warn_format_conversion_argument_type_mismatch_confusion; |
9215 | break; |
9216 | case ArgType::NoMatch: |
9217 | Diag = diag::warn_format_conversion_argument_type_mismatch; |
9218 | break; |
9219 | } |
9220 | |
9221 | |
9222 | |
9223 | EmitFormatDiagnostic(S.PDiag(Diag) |
9224 | << AT.getRepresentativeTypeName(S.Context) |
9225 | << IntendedTy << IsEnum << E->getSourceRange(), |
9226 | E->getBeginLoc(), |
9227 | false, SpecRange, |
9228 | FixItHint::CreateReplacement(SpecRange, os.str())); |
9229 | } else { |
9230 | |
9231 | |
9232 | |
9233 | |
9234 | |
9235 | |
9236 | |
9237 | SmallString<16> CastBuf; |
9238 | llvm::raw_svector_ostream CastFix(CastBuf); |
9239 | CastFix << "("; |
9240 | IntendedTy.print(CastFix, S.Context.getPrintingPolicy()); |
9241 | CastFix << ")"; |
9242 | |
9243 | SmallVector<FixItHint,4> Hints; |
9244 | if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly) |
9245 | Hints.push_back(FixItHint::CreateReplacement(SpecRange, os.str())); |
9246 | |
9247 | if (const CStyleCastExpr *CCast = dyn_cast<CStyleCastExpr>(E)) { |
9248 | |
9249 | SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc()); |
9250 | Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str())); |
9251 | |
9252 | } else if (!requiresParensToAddCast(E)) { |
9253 | |
9254 | |
9255 | Hints.push_back( |
9256 | FixItHint::CreateInsertion(E->getBeginLoc(), CastFix.str())); |
9257 | } else { |
9258 | |
9259 | CastFix << "("; |
9260 | Hints.push_back( |
9261 | FixItHint::CreateInsertion(E->getBeginLoc(), CastFix.str())); |
9262 | |
9263 | SourceLocation After = S.getLocForEndOfToken(E->getEndLoc()); |
9264 | Hints.push_back(FixItHint::CreateInsertion(After, ")")); |
9265 | } |
9266 | |
9267 | if (ShouldNotPrintDirectly) { |
9268 | |
9269 | |
9270 | |
9271 | StringRef Name; |
9272 | if (const TypedefType *TypedefTy = dyn_cast<TypedefType>(ExprTy)) |
9273 | Name = TypedefTy->getDecl()->getName(); |
9274 | else |
9275 | Name = CastTyName; |
9276 | unsigned Diag = Match == ArgType::NoMatchPedantic |
9277 | ? diag::warn_format_argument_needs_cast_pedantic |
9278 | : diag::warn_format_argument_needs_cast; |
9279 | EmitFormatDiagnostic(S.PDiag(Diag) << Name << IntendedTy << IsEnum |
9280 | << E->getSourceRange(), |
9281 | E->getBeginLoc(), false, |
9282 | SpecRange, Hints); |
9283 | } else { |
9284 | |
9285 | |
9286 | |
9287 | EmitFormatDiagnostic( |
9288 | S.PDiag(diag::warn_format_conversion_argument_type_mismatch) |
9289 | << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum |
9290 | << E->getSourceRange(), |
9291 | E->getBeginLoc(), false, SpecRange, Hints); |
9292 | } |
9293 | } |
9294 | } else { |
9295 | const CharSourceRange &CSR = getSpecifierRange(StartSpecifier, |
9296 | SpecifierLen); |
9297 | |
9298 | |
9299 | |
9300 | switch (S.isValidVarArgType(ExprTy)) { |
9301 | case Sema::VAK_Valid: |
9302 | case Sema::VAK_ValidInCXX11: { |
9303 | unsigned Diag; |
9304 | switch (Match) { |
9305 | case ArgType::Match: llvm_unreachable("expected non-matching"); |
9306 | case ArgType::NoMatchPedantic: |
9307 | Diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; |
9308 | break; |
9309 | case ArgType::NoMatchTypeConfusion: |
9310 | Diag = diag::warn_format_conversion_argument_type_mismatch_confusion; |
9311 | break; |
9312 | case ArgType::NoMatch: |
9313 | Diag = diag::warn_format_conversion_argument_type_mismatch; |
9314 | break; |
9315 | } |
9316 | |
9317 | EmitFormatDiagnostic( |
9318 | S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy |
9319 | << IsEnum << CSR << E->getSourceRange(), |
9320 | E->getBeginLoc(), false, CSR); |
9321 | break; |
9322 | } |
9323 | case Sema::VAK_Undefined: |
9324 | case Sema::VAK_MSVCUndefined: |
9325 | EmitFormatDiagnostic(S.PDiag(diag::warn_non_pod_vararg_with_format_string) |
9326 | << S.getLangOpts().CPlusPlus11 << ExprTy |
9327 | << CallType |
9328 | << AT.getRepresentativeTypeName(S.Context) << CSR |
9329 | << E->getSourceRange(), |
9330 | E->getBeginLoc(), false, CSR); |
9331 | checkForCStrMembers(AT, E); |
9332 | break; |
9333 | |
9334 | case Sema::VAK_Invalid: |
9335 | if (ExprTy->isObjCObjectType()) |
9336 | EmitFormatDiagnostic( |
9337 | S.PDiag(diag::err_cannot_pass_objc_interface_to_vararg_format) |
9338 | << S.getLangOpts().CPlusPlus11 << ExprTy << CallType |
9339 | << AT.getRepresentativeTypeName(S.Context) << CSR |
9340 | << E->getSourceRange(), |
9341 | E->getBeginLoc(), false, CSR); |
9342 | else |
9343 | |
9344 | |
9345 | S.Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg_format) |
9346 | << isa<InitListExpr>(E) << ExprTy << CallType |
9347 | << AT.getRepresentativeTypeName(S.Context) << E->getSourceRange(); |
9348 | break; |
9349 | } |
9350 | |
9351 | assert(FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && |
9352 | "format string specifier index out of range"); |
9353 | CheckedVarArgs[FirstDataArg + FS.getArgIndex()] = true; |
9354 | } |
9355 | |
9356 | return true; |
9357 | } |
9358 | |
9359 | |
9360 | |
9361 | namespace { |
9362 | |
9363 | class CheckScanfHandler : public CheckFormatHandler { |
9364 | public: |
9365 | CheckScanfHandler(Sema &s, const FormatStringLiteral *fexpr, |
9366 | const Expr *origFormatExpr, Sema::FormatStringType type, |
9367 | unsigned firstDataArg, unsigned numDataArgs, |
9368 | const char *beg, bool hasVAListArg, |
9369 | ArrayRef<const Expr *> Args, unsigned formatIdx, |
9370 | bool inFunctionCall, Sema::VariadicCallType CallType, |
9371 | llvm::SmallBitVector &CheckedVarArgs, |
9372 | UncoveredArgHandler &UncoveredArg) |
9373 | : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, |
9374 | numDataArgs, beg, hasVAListArg, Args, formatIdx, |
9375 | inFunctionCall, CallType, CheckedVarArgs, |
9376 | UncoveredArg) {} |
9377 | |
9378 | bool HandleScanfSpecifier(const analyze_scanf::ScanfSpecifier &FS, |
9379 | const char *startSpecifier, |
9380 | unsigned specifierLen) override; |
9381 | |
9382 | bool HandleInvalidScanfConversionSpecifier( |
9383 | const analyze_scanf::ScanfSpecifier &FS, |
9384 | const char *startSpecifier, |
9385 | unsigned specifierLen) override; |
9386 | |
9387 | void HandleIncompleteScanList(const char *start, const char *end) override; |
9388 | }; |
9389 | |
9390 | } |
9391 | |
9392 | void CheckScanfHandler::HandleIncompleteScanList(const char *start, |
9393 | const char *end) { |
9394 | EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_scanlist_incomplete), |
9395 | getLocationOfByte(end), true, |
9396 | getSpecifierRange(start, end - start)); |
9397 | } |
9398 | |
9399 | bool CheckScanfHandler::HandleInvalidScanfConversionSpecifier( |
9400 | const analyze_scanf::ScanfSpecifier &FS, |
9401 | const char *startSpecifier, |
9402 | unsigned specifierLen) { |
9403 | const analyze_scanf::ScanfConversionSpecifier &CS = |
9404 | FS.getConversionSpecifier(); |
9405 | |
9406 | return HandleInvalidConversionSpecifier(FS.getArgIndex(), |
9407 | getLocationOfByte(CS.getStart()), |
9408 | startSpecifier, specifierLen, |
9409 | CS.getStart(), CS.getLength()); |
9410 | } |
9411 | |
9412 | bool CheckScanfHandler::HandleScanfSpecifier( |
9413 | const analyze_scanf::ScanfSpecifier &FS, |
9414 | const char *startSpecifier, |
9415 | unsigned specifierLen) { |
9416 | using namespace analyze_scanf; |
9417 | using namespace analyze_format_string; |
9418 | |
9419 | const ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); |
9420 | |
9421 | |
9422 | |
9423 | if (FS.consumesDataArgument()) { |
9424 | if (atFirstArg) { |
9425 | atFirstArg = false; |
9426 | usesPositionalArgs = FS.usesPositionalArg(); |
9427 | } |
9428 | else if (usesPositionalArgs != FS.usesPositionalArg()) { |
9429 | HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), |
9430 | startSpecifier, specifierLen); |
9431 | return false; |
9432 | } |
9433 | } |
9434 | |
9435 | |
9436 | const OptionalAmount &Amt = FS.getFieldWidth(); |
9437 | if (Amt.getHowSpecified() == OptionalAmount::Constant) { |
9438 | if (Amt.getConstantAmount() == 0) { |
9439 | const CharSourceRange &R = getSpecifierRange(Amt.getStart(), |
9440 | Amt.getConstantLength()); |
9441 | EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_nonzero_width), |
9442 | getLocationOfByte(Amt.getStart()), |
9443 | true, R, |
9444 | FixItHint::CreateRemoval(R)); |
9445 | } |
9446 | } |
9447 | |
9448 | if (!FS.consumesDataArgument()) { |
9449 | |
9450 | |
9451 | return true; |
9452 | } |
9453 | |
9454 | |
9455 | unsigned argIndex = FS.getArgIndex(); |
9456 | if (argIndex < NumDataArgs) { |
9457 | |
9458 | |
9459 | |
9460 | CoveredArgs.set(argIndex); |
9461 | } |
9462 | |
9463 | |
9464 | if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo(), |
9465 | S.getLangOpts())) |
9466 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
9467 | diag::warn_format_nonsensical_length); |
9468 | else if (!FS.hasStandardLengthModifier()) |
9469 | HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); |
9470 | else if (!FS.hasStandardLengthConversionCombination()) |
9471 | HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, |
9472 | diag::warn_format_non_standard_conversion_spec); |
9473 | |
9474 | if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) |
9475 | HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); |
9476 | |
9477 | |
9478 | if (HasVAListArg) |
9479 | return true; |
9480 | |
9481 | if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) |
9482 | return false; |
9483 | |
9484 | |
9485 | const Expr *Ex = getDataArg(argIndex); |
9486 | if (!Ex) |
9487 | return true; |
9488 | |
9489 | const analyze_format_string::ArgType &AT = FS.getArgType(S.Context); |
9490 | |
9491 | if (!AT.isValid()) { |
9492 | return true; |
9493 | } |
9494 | |
9495 | analyze_format_string::ArgType::MatchKind Match = |
9496 | AT.matchesType(S.Context, Ex->getType()); |
9497 | bool Pedantic = Match == analyze_format_string::ArgType::NoMatchPedantic; |
9498 | if (Match == analyze_format_string::ArgType::Match) |
9499 | return true; |
9500 | |
9501 | ScanfSpecifier fixedFS = FS; |
9502 | bool Success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), |
9503 | S.getLangOpts(), S.Context); |
9504 | |
9505 | unsigned Diag = |
9506 | Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic |
9507 | : diag::warn_format_conversion_argument_type_mismatch; |
9508 | |
9509 | if (Success) { |
9510 | |
9511 | SmallString<128> buf; |
9512 | llvm::raw_svector_ostream os(buf); |
9513 | fixedFS.toString(os); |
9514 | |
9515 | EmitFormatDiagnostic( |
9516 | S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) |
9517 | << Ex->getType() << false << Ex->getSourceRange(), |
9518 | Ex->getBeginLoc(), |
9519 | false, |
9520 | getSpecifierRange(startSpecifier, specifierLen), |
9521 | FixItHint::CreateReplacement( |
9522 | getSpecifierRange(startSpecifier, specifierLen), os.str())); |
9523 | } else { |
9524 | EmitFormatDiagnostic(S.PDiag(Diag) |
9525 | << AT.getRepresentativeTypeName(S.Context) |
9526 | << Ex->getType() << false << Ex->getSourceRange(), |
9527 | Ex->getBeginLoc(), |
9528 | false, |
9529 | getSpecifierRange(startSpecifier, specifierLen)); |
9530 | } |
9531 | |
9532 | return true; |
9533 | } |
9534 | |
9535 | static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, |
9536 | const Expr *OrigFormatExpr, |
9537 | ArrayRef<const Expr *> Args, |
9538 | bool HasVAListArg, unsigned format_idx, |
9539 | unsigned firstDataArg, |
9540 | Sema::FormatStringType Type, |
9541 | bool inFunctionCall, |
9542 | Sema::VariadicCallType CallType, |
9543 | llvm::SmallBitVector &CheckedVarArgs, |
9544 | UncoveredArgHandler &UncoveredArg, |
9545 | bool IgnoreStringsWithoutSpecifiers) { |
9546 | |
9547 | if (!FExpr->isAscii() && !FExpr->isUTF8()) { |
9548 | CheckFormatHandler::EmitFormatDiagnostic( |
9549 | S, inFunctionCall, Args[format_idx], |
9550 | S.PDiag(diag::warn_format_string_is_wide_literal), FExpr->getBeginLoc(), |
9551 | true, OrigFormatExpr->getSourceRange()); |
9552 | return; |
9553 | } |
9554 | |
9555 | |
9556 | StringRef StrRef = FExpr->getString(); |
9557 | const char *Str = StrRef.data(); |
9558 | |
9559 | const ConstantArrayType *T = |
9560 | S.Context.getAsConstantArrayType(FExpr->getType()); |
9561 | assert(T && "String literal not of constant array type!"); |
9562 | size_t TypeSize = T->getSize().getZExtValue(); |
9563 | size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); |
9564 | const unsigned numDataArgs = Args.size() - firstDataArg; |
9565 | |
9566 | if (IgnoreStringsWithoutSpecifiers && |
9567 | !analyze_format_string::parseFormatStringHasFormattingSpecifiers( |
9568 | Str, Str + StrLen, S.getLangOpts(), S.Context.getTargetInfo())) |
9569 | return; |
9570 | |
9571 | |
9572 | |
9573 | if (TypeSize <= StrRef.size() && |
9574 | StrRef.substr(0, TypeSize).find('\0') == StringRef::npos) { |
9575 | CheckFormatHandler::EmitFormatDiagnostic( |
9576 | S, inFunctionCall, Args[format_idx], |
9577 | S.PDiag(diag::warn_printf_format_string_not_null_terminated), |
9578 | FExpr->getBeginLoc(), |
9579 | true, OrigFormatExpr->getSourceRange()); |
9580 | return; |
9581 | } |
9582 | |
9583 | |
9584 | if (StrLen == 0 && numDataArgs > 0) { |
9585 | CheckFormatHandler::EmitFormatDiagnostic( |
9586 | S, inFunctionCall, Args[format_idx], |
9587 | S.PDiag(diag::warn_empty_format_string), FExpr->getBeginLoc(), |
9588 | true, OrigFormatExpr->getSourceRange()); |
9589 | return; |
9590 | } |
9591 | |
9592 | if (Type == Sema::FST_Printf || Type == Sema::FST_NSString || |
9593 | Type == Sema::FST_Kprintf || Type == Sema::FST_FreeBSDKPrintf || |
9594 | Type == Sema::FST_OSLog || Type == Sema::FST_OSTrace || |
9595 | Type == Sema::FST_Syslog) { |
9596 | CheckPrintfHandler H( |
9597 | S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs, |
9598 | (Type == Sema::FST_NSString || Type == Sema::FST_OSTrace), Str, |
9599 | HasVAListArg, Args, format_idx, inFunctionCall, CallType, |
9600 | CheckedVarArgs, UncoveredArg); |
9601 | |
9602 | if (!analyze_format_string::ParsePrintfString(H, Str, Str + StrLen, |
9603 | S.getLangOpts(), |
9604 | S.Context.getTargetInfo(), |
9605 | Type == Sema::FST_Kprintf || Type == Sema::FST_FreeBSDKPrintf)) |
9606 | H.DoneProcessing(); |
9607 | } else if (Type == Sema::FST_Scanf) { |
9608 | CheckScanfHandler H(S, FExpr, OrigFormatExpr, Type, firstDataArg, |
9609 | numDataArgs, Str, HasVAListArg, Args, format_idx, |
9610 | inFunctionCall, CallType, CheckedVarArgs, UncoveredArg); |
9611 | |
9612 | if (!analyze_format_string::ParseScanfString(H, Str, Str + StrLen, |
9613 | S.getLangOpts(), |
9614 | S.Context.getTargetInfo())) |
9615 | H.DoneProcessing(); |
9616 | } |
9617 | } |
9618 | |
9619 | bool Sema::FormatStringHasSArg(const StringLiteral *FExpr) { |
9620 | |
9621 | StringRef StrRef = FExpr->getString(); |
9622 | const char *Str = StrRef.data(); |
9623 | |
9624 | const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); |
9625 | assert(T && "String literal not of constant array type!"); |
9626 | size_t TypeSize = T->getSize().getZExtValue(); |
9627 | size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); |
9628 | return analyze_format_string::ParseFormatStringHasSArg(Str, Str + StrLen, |
9629 | getLangOpts(), |
9630 | Context.getTargetInfo()); |
9631 | } |
9632 | |
9633 | |
9634 | |
9635 | |
9636 | |
9637 | static unsigned getLargerAbsoluteValueFunction(unsigned AbsFunction) { |
9638 | switch (AbsFunction) { |
9639 | default: |
9640 | return 0; |
9641 | |
9642 | case Builtin::BI__builtin_abs: |
9643 | return Builtin::BI__builtin_labs; |
9644 | case Builtin::BI__builtin_labs: |
9645 | return Builtin::BI__builtin_llabs; |
9646 | case Builtin::BI__builtin_llabs: |
9647 | return 0; |
9648 | |
9649 | case Builtin::BI__builtin_fabsf: |
9650 | return Builtin::BI__builtin_fabs; |
9651 | case Builtin::BI__builtin_fabs: |
9652 | return Builtin::BI__builtin_fabsl; |
9653 | case Builtin::BI__builtin_fabsl: |
9654 | return 0; |
9655 | |
9656 | case Builtin::BI__builtin_cabsf: |
9657 | return Builtin::BI__builtin_cabs; |
9658 | case Builtin::BI__builtin_cabs: |
9659 | return Builtin::BI__builtin_cabsl; |
9660 | case Builtin::BI__builtin_cabsl: |
9661 | return 0; |
9662 | |
9663 | case Builtin::BIabs: |
9664 | return Builtin::BIlabs; |
9665 | case Builtin::BIlabs: |
9666 | return Builtin::BIllabs; |
9667 | case Builtin::BIllabs: |
9668 | return 0; |
9669 | |
9670 | case Builtin::BIfabsf: |
9671 | return Builtin::BIfabs; |
9672 | case Builtin::BIfabs: |
9673 | return Builtin::BIfabsl; |
9674 | case Builtin::BIfabsl: |
9675 | return 0; |
9676 | |
9677 | case Builtin::BIcabsf: |
9678 | return Builtin::BIcabs; |
9679 | case Builtin::BIcabs: |
9680 | return Builtin::BIcabsl; |
9681 | case Builtin::BIcabsl: |
9682 | return 0; |
9683 | } |
9684 | } |
9685 | |
9686 | |
9687 | static QualType getAbsoluteValueArgumentType(ASTContext &Context, |
9688 | unsigned AbsType) { |
9689 | if (AbsType == 0) |
9690 | return QualType(); |
9691 | |
9692 | ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; |
9693 | QualType BuiltinType = Context.GetBuiltinType(AbsType, Error); |
9694 | if (Error != ASTContext::GE_None) |
9695 | return QualType(); |
9696 | |
9697 | const FunctionProtoType *FT = BuiltinType->getAs<FunctionProtoType>(); |
9698 | if (!FT) |
9699 | return QualType(); |
9700 | |
9701 | if (FT->getNumParams() != 1) |
9702 | return QualType(); |
9703 | |
9704 | return FT->getParamType(0); |
9705 | } |
9706 | |
9707 | |
9708 | |
9709 | static unsigned getBestAbsFunction(ASTContext &Context, QualType ArgType, |
9710 | unsigned AbsFunctionKind) { |
9711 | unsigned BestKind = 0; |
9712 | uint64_t ArgSize = Context.getTypeSize(ArgType); |
9713 | for (unsigned Kind = AbsFunctionKind; Kind != 0; |
9714 | Kind = getLargerAbsoluteValueFunction(Kind)) { |
9715 | QualType ParamType = getAbsoluteValueArgumentType(Context, Kind); |
9716 | if (Context.getTypeSize(ParamType) >= ArgSize) { |
9717 | if (BestKind == 0) |
9718 | BestKind = Kind; |
9719 | else if (Context.hasSameType(ParamType, ArgType)) { |
9720 | BestKind = Kind; |
9721 | break; |
9722 | } |
9723 | } |
9724 | } |
9725 | return BestKind; |
9726 | } |
9727 | |
9728 | enum AbsoluteValueKind { |
9729 | AVK_Integer, |
9730 | AVK_Floating, |
9731 | AVK_Complex |
9732 | }; |
9733 | |
9734 | static AbsoluteValueKind getAbsoluteValueKind(QualType T) { |
9735 | if (T->isIntegralOrEnumerationType()) |
9736 | return AVK_Integer; |
9737 | if (T->isRealFloatingType()) |
9738 | return AVK_Floating; |
9739 | if (T->isAnyComplexType()) |
9740 | return AVK_Complex; |
9741 | |
9742 | llvm_unreachable("Type not integer, floating, or complex"); |
9743 | } |
9744 | |
9745 | |
9746 | |
9747 | static unsigned changeAbsFunction(unsigned AbsKind, |
9748 | AbsoluteValueKind ValueKind) { |
9749 | switch (ValueKind) { |
9750 | case AVK_Integer: |
9751 | switch (AbsKind) { |
9752 | default: |
9753 | return 0; |
9754 | case Builtin::BI__builtin_fabsf: |
9755 | case Builtin::BI__builtin_fabs: |
9756 | case Builtin::BI__builtin_fabsl: |
9757 | case Builtin::BI__builtin_cabsf: |
9758 | case Builtin::BI__builtin_cabs: |
9759 | case Builtin::BI__builtin_cabsl: |
9760 | return Builtin::BI__builtin_abs; |
9761 | case Builtin::BIfabsf: |
9762 | case Builtin::BIfabs: |
9763 | case Builtin::BIfabsl: |
9764 | case Builtin::BIcabsf: |
9765 | case Builtin::BIcabs: |
9766 | case Builtin::BIcabsl: |
9767 | return Builtin::BIabs; |
9768 | } |
9769 | case AVK_Floating: |
9770 | switch (AbsKind) { |
9771 | default: |
9772 | return 0; |
9773 | case Builtin::BI__builtin_abs: |
9774 | case Builtin::BI__builtin_labs: |
9775 | case Builtin::BI__builtin_llabs: |
9776 | case Builtin::BI__builtin_cabsf: |
9777 | case Builtin::BI__builtin_cabs: |
9778 | case Builtin::BI__builtin_cabsl: |
9779 | return Builtin::BI__builtin_fabsf; |
9780 | case Builtin::BIabs: |
9781 | case Builtin::BIlabs: |
9782 | case Builtin::BIllabs: |
9783 | case Builtin::BIcabsf: |
9784 | case Builtin::BIcabs: |
9785 | case Builtin::BIcabsl: |
9786 | return Builtin::BIfabsf; |
9787 | } |
9788 | case AVK_Complex: |
9789 | switch (AbsKind) { |
9790 | default: |
9791 | return 0; |
9792 | case Builtin::BI__builtin_abs: |
9793 | case Builtin::BI__builtin_labs: |
9794 | case Builtin::BI__builtin_llabs: |
9795 | case Builtin::BI__builtin_fabsf: |
9796 | case Builtin::BI__builtin_fabs: |
9797 | case Builtin::BI__builtin_fabsl: |
9798 | return Builtin::BI__builtin_cabsf; |
9799 | case Builtin::BIabs: |
9800 | case Builtin::BIlabs: |
9801 | case Builtin::BIllabs: |
9802 | case Builtin::BIfabsf: |
9803 | case Builtin::BIfabs: |
9804 | case Builtin::BIfabsl: |
9805 | return Builtin::BIcabsf; |
9806 | } |
9807 | } |
9808 | llvm_unreachable("Unable to convert function"); |
9809 | } |
9810 | |
9811 | static unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { |
9812 | const IdentifierInfo *FnInfo = FDecl->getIdentifier(); |
9813 | if (!FnInfo) |
9814 | return 0; |
9815 | |
9816 | switch (FDecl->getBuiltinID()) { |
9817 | default: |
9818 | return 0; |
9819 | case Builtin::BI__builtin_abs: |
9820 | case Builtin::BI__builtin_fabs: |
9821 | case Builtin::BI__builtin_fabsf: |
9822 | case Builtin::BI__builtin_fabsl: |
9823 | case Builtin::BI__builtin_labs: |
9824 | case Builtin::BI__builtin_llabs: |
9825 | case Builtin::BI__builtin_cabs: |
9826 | case Builtin::BI__builtin_cabsf: |
9827 | case Builtin::BI__builtin_cabsl: |
9828 | case Builtin::BIabs: |
9829 | case Builtin::BIlabs: |
9830 | case Builtin::BIllabs: |
9831 | case Builtin::BIfabs: |
9832 | case Builtin::BIfabsf: |
9833 | case Builtin::BIfabsl: |
9834 | case Builtin::BIcabs: |
9835 | case Builtin::BIcabsf: |
9836 | case Builtin::BIcabsl: |
9837 | return FDecl->getBuiltinID(); |
9838 | } |
9839 | llvm_unreachable("Unknown Builtin type"); |
9840 | } |
9841 | |
9842 | |
9843 | |
9844 | static void emitReplacement(Sema &S, SourceLocation Loc, SourceRange Range, |
9845 | unsigned AbsKind, QualType ArgType) { |
9846 | bool EmitHeaderHint = true; |
9847 | const char *HeaderName = nullptr; |
9848 | const char *FunctionName = nullptr; |
9849 | if (S.getLangOpts().CPlusPlus && !ArgType->isAnyComplexType()) { |
9850 | FunctionName = "std::abs"; |
9851 | if (ArgType->isIntegralOrEnumerationType()) { |
9852 | HeaderName = "cstdlib"; |
9853 | } else if (ArgType->isRealFloatingType()) { |
9854 | HeaderName = "cmath"; |
9855 | } else { |
9856 | llvm_unreachable("Invalid Type"); |
9857 | } |
9858 | |
9859 | |
9860 | if (NamespaceDecl *Std = S.getStdNamespace()) { |
9861 | LookupResult R(S, &S.Context.Idents.get("abs"), Loc, Sema::LookupAnyName); |
9862 | R.suppressDiagnostics(); |
9863 | S.LookupQualifiedName(R, Std); |
9864 | |
9865 | for (const auto *I : R) { |
9866 | const FunctionDecl *FDecl = nullptr; |
9867 | if (const UsingShadowDecl *UsingD = dyn_cast<UsingShadowDecl>(I)) { |
9868 | FDecl = dyn_cast<FunctionDecl>(UsingD->getTargetDecl()); |
9869 | } else { |
9870 | FDecl = dyn_cast<FunctionDecl>(I); |
9871 | } |
9872 | if (!FDecl) |
9873 | continue; |
9874 | |
9875 | |
9876 | if (FDecl->getNumParams() != 1) |
9877 | continue; |
9878 | |
9879 | |
9880 | QualType ParamType = FDecl->getParamDecl(0)->getType(); |
9881 | if (getAbsoluteValueKind(ArgType) == getAbsoluteValueKind(ParamType) && |
9882 | S.Context.getTypeSize(ArgType) <= |
9883 | S.Context.getTypeSize(ParamType)) { |
9884 | |
9885 | EmitHeaderHint = false; |
9886 | break; |
9887 | } |
9888 | } |
9889 | } |
9890 | } else { |
9891 | FunctionName = S.Context.BuiltinInfo.getName(AbsKind); |
9892 | HeaderName = S.Context.BuiltinInfo.getHeaderName(AbsKind); |
9893 | |
9894 | if (HeaderName) { |
9895 | DeclarationName DN(&S.Context.Idents.get(FunctionName)); |
9896 | LookupResult R(S, DN, Loc, Sema::LookupAnyName); |
9897 | R.suppressDiagnostics(); |
9898 | S.LookupName(R, S.getCurScope()); |
9899 | |
9900 | if (R.isSingleResult()) { |
9901 | FunctionDecl *FD = dyn_cast<FunctionDecl>(R.getFoundDecl()); |
9902 | if (FD && FD->getBuiltinID() == AbsKind) { |
9903 | EmitHeaderHint = false; |
9904 | } else { |
9905 | return; |
9906 | } |
9907 | } else if (!R.empty()) { |
9908 | return; |
9909 | } |
9910 | } |
9911 | } |
9912 | |
9913 | S.Diag(Loc, diag::note_replace_abs_function) |
9914 | << FunctionName << FixItHint::CreateReplacement(Range, FunctionName); |
9915 | |
9916 | if (!HeaderName) |
9917 | return; |
9918 | |
9919 | if (!EmitHeaderHint) |
9920 | return; |
9921 | |
9922 | S.Diag(Loc, diag::note_include_header_or_declare) << HeaderName |
9923 | << FunctionName; |
9924 | } |
9925 | |
9926 | template <std::size_t StrLen> |
9927 | static bool IsStdFunction(const FunctionDecl *FDecl, |
9928 | const char (&Str)[StrLen]) { |
9929 | if (!FDecl) |
9930 | return false; |
9931 | if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr(Str)) |
9932 | return false; |
9933 | if (!FDecl->isInStdNamespace()) |
9934 | return false; |
9935 | |
9936 | return true; |
9937 | } |
9938 | |
9939 | |
9940 | void Sema::CheckAbsoluteValueFunction(const CallExpr *Call, |
9941 | const FunctionDecl *FDecl) { |
9942 | if (Call->getNumArgs() != 1) |
9943 | return; |
9944 | |
9945 | unsigned AbsKind = getAbsoluteValueFunctionKind(FDecl); |
9946 | bool IsStdAbs = IsStdFunction(FDecl, "abs"); |
9947 | if (AbsKind == 0 && !IsStdAbs) |
9948 | return; |
9949 | |
9950 | QualType ArgType = Call->getArg(0)->IgnoreParenImpCasts()->getType(); |
9951 | QualType ParamType = Call->getArg(0)->getType(); |
9952 | |
9953 | |
9954 | |
9955 | if (ArgType->isUnsignedIntegerType()) { |
9956 | const char *FunctionName = |
9957 | IsStdAbs ? "std::abs" : Context.BuiltinInfo.getName(AbsKind); |
9958 | Diag(Call->getExprLoc(), diag::warn_unsigned_abs) << ArgType << ParamType; |
9959 | Diag(Call->getExprLoc(), diag::note_remove_abs) |
9960 | << FunctionName |
9961 | << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()); |
9962 | return; |
9963 | } |
9964 | |
9965 | |
9966 | |
9967 | if (ArgType->isPointerType() || ArgType->canDecayToPointerType()) { |
9968 | unsigned DiagType = 0; |
9969 | if (ArgType->isFunctionType()) |
9970 | DiagType = 1; |
9971 | else if (ArgType->isArrayType()) |
9972 | DiagType = 2; |
9973 | |
9974 | Diag(Call->getExprLoc(), diag::warn_pointer_abs) << DiagType << ArgType; |
9975 | return; |
9976 | } |
9977 | |
9978 | |
9979 | |
9980 | if (IsStdAbs) |
9981 | return; |
9982 | |
9983 | AbsoluteValueKind ArgValueKind = getAbsoluteValueKind(ArgType); |
9984 | AbsoluteValueKind ParamValueKind = getAbsoluteValueKind(ParamType); |
9985 | |
9986 | |
9987 | |
9988 | if (ArgValueKind == ParamValueKind) { |
9989 | if (Context.getTypeSize(ArgType) <= Context.getTypeSize(ParamType)) |
9990 | return; |
9991 | |
9992 | unsigned NewAbsKind = getBestAbsFunction(Context, ArgType, AbsKind); |
9993 | Diag(Call->getExprLoc(), diag::warn_abs_too_small) |
9994 | << FDecl << ArgType << ParamType; |
9995 | |
9996 | if (NewAbsKind == 0) |
9997 | return; |
9998 | |
9999 | emitReplacement(*this, Call->getExprLoc(), |
10000 | Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); |
10001 | return; |
10002 | } |
10003 | |
10004 | |
10005 | |
10006 | |
10007 | unsigned NewAbsKind = changeAbsFunction(AbsKind, ArgValueKind); |
10008 | NewAbsKind = getBestAbsFunction(Context, ArgType, NewAbsKind); |
10009 | if (NewAbsKind == 0) |
10010 | return; |
10011 | |
10012 | Diag(Call->getExprLoc(), diag::warn_wrong_absolute_value_type) |
10013 | << FDecl << ParamValueKind << ArgValueKind; |
10014 | |
10015 | emitReplacement(*this, Call->getExprLoc(), |
10016 | Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); |
10017 | } |
10018 | |
10019 | |
10020 | void Sema::CheckMaxUnsignedZero(const CallExpr *Call, |
10021 | const FunctionDecl *FDecl) { |
10022 | if (!Call || !FDecl) return; |
10023 | |
10024 | |
10025 | if (inTemplateInstantiation()) return; |
10026 | if (Call->getExprLoc().isMacroID()) return; |
10027 | |
10028 | |
10029 | if (Call->getNumArgs() != 2) return; |
10030 | if (!IsStdFunction(FDecl, "max")) return; |
10031 | const auto * ArgList = FDecl->getTemplateSpecializationArgs(); |
10032 | if (!ArgList) return; |
10033 | if (ArgList->size() != 1) return; |
10034 | |
10035 | |
10036 | const auto& TA = ArgList->get(0); |
10037 | if (TA.getKind() != TemplateArgument::Type) return; |
10038 | QualType ArgType = TA.getAsType(); |
10039 | if (!ArgType->isUnsignedIntegerType()) return; |
10040 | |
10041 | |
10042 | auto IsLiteralZeroArg = [](const Expr* E) -> bool { |
10043 | const auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E); |
10044 | if (!MTE) return false; |
10045 | const auto *Num = dyn_cast<IntegerLiteral>(MTE->getSubExpr()); |
10046 | if (!Num) return false; |
10047 | if (Num->getValue() != 0) return false; |
10048 | return true; |
10049 | }; |
10050 | |
10051 | const Expr *FirstArg = Call->getArg(0); |
10052 | const Expr *SecondArg = Call->getArg(1); |
10053 | const bool IsFirstArgZero = IsLiteralZeroArg(FirstArg); |
10054 | const bool IsSecondArgZero = IsLiteralZeroArg(SecondArg); |
10055 | |
10056 | |
10057 | if (IsFirstArgZero == IsSecondArgZero) return; |
10058 | |
10059 | SourceRange FirstRange = FirstArg->getSourceRange(); |
10060 | SourceRange SecondRange = SecondArg->getSourceRange(); |
10061 | |
10062 | SourceRange ZeroRange = IsFirstArgZero ? FirstRange : SecondRange; |
10063 | |
10064 | Diag(Call->getExprLoc(), diag::warn_max_unsigned_zero) |
10065 | << IsFirstArgZero << Call->getCallee()->getSourceRange() << ZeroRange; |
10066 | |
10067 | |
10068 | SourceRange RemovalRange; |
10069 | if (IsFirstArgZero) { |
10070 | RemovalRange = SourceRange(FirstRange.getBegin(), |
10071 | SecondRange.getBegin().getLocWithOffset(-1)); |
10072 | } else { |
10073 | RemovalRange = SourceRange(getLocForEndOfToken(FirstRange.getEnd()), |
10074 | SecondRange.getEnd()); |
10075 | } |
10076 | |
10077 | Diag(Call->getExprLoc(), diag::note_remove_max_call) |
10078 | << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()) |
10079 | << FixItHint::CreateRemoval(RemovalRange); |
10080 | } |
10081 | |
10082 | |
10083 | |
10084 | |
10085 | |
10086 | |
10087 | |
10088 | static bool CheckMemorySizeofForComparison(Sema &S, const Expr *E, |
10089 | IdentifierInfo *FnName, |
10090 | SourceLocation FnLoc, |
10091 | SourceLocation RParenLoc) { |
10092 | const BinaryOperator *Size = dyn_cast<BinaryOperator>(E); |
10093 | if (!Size) |
10094 | return false; |
10095 | |
10096 | |
10097 | if (!Size->isComparisonOp() && !Size->isLogicalOp()) |
10098 | return false; |
10099 | |
10100 | SourceRange SizeRange = Size->getSourceRange(); |
10101 | S.Diag(Size->getOperatorLoc(), diag::warn_memsize_comparison) |
10102 | << SizeRange << FnName; |
10103 | S.Diag(FnLoc, diag::note_memsize_comparison_paren) |
10104 | << FnName |
10105 | << FixItHint::CreateInsertion( |
10106 | S.getLocForEndOfToken(Size->getLHS()->getEndLoc()), ")") |
10107 | << FixItHint::CreateRemoval(RParenLoc); |
10108 | S.Diag(SizeRange.getBegin(), diag::note_memsize_comparison_cast_silence) |
10109 | << FixItHint::CreateInsertion(SizeRange.getBegin(), "(size_t)(") |
10110 | << FixItHint::CreateInsertion(S.getLocForEndOfToken(SizeRange.getEnd()), |
10111 | ")"); |
10112 | |
10113 | return true; |
10114 | } |
10115 | |
10116 | |
10117 | |
10118 | static const CXXRecordDecl *getContainedDynamicClass(QualType T, |
10119 | bool &IsContained) { |
10120 | |
10121 | const Type *Ty = T->getBaseElementTypeUnsafe(); |
10122 | IsContained = false; |
10123 | |
10124 | const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl(); |
10125 | RD = RD ? RD->getDefinition() : nullptr; |
10126 | if (!RD || RD->isInvalidDecl()) |
10127 | return nullptr; |
10128 | |
10129 | if (RD->isDynamicClass()) |
10130 | return RD; |
10131 | |
10132 | |
10133 | |
10134 | |
10135 | for (auto *FD : RD->fields()) { |
10136 | bool SubContained; |
10137 | if (const CXXRecordDecl *ContainedRD = |
10138 | getContainedDynamicClass(FD->getType(), SubContained)) { |
10139 | IsContained = true; |
10140 | return ContainedRD; |
10141 | } |
10142 | } |
10143 | |
10144 | return nullptr; |
10145 | } |
10146 | |
10147 | static const UnaryExprOrTypeTraitExpr *getAsSizeOfExpr(const Expr *E) { |
10148 | if (const auto *Unary = dyn_cast<UnaryExprOrTypeTraitExpr>(E)) |
10149 | if (Unary->getKind() == UETT_SizeOf) |
10150 | return Unary; |
10151 | return nullptr; |
10152 | } |
10153 | |
10154 | |
10155 | |
10156 | static const Expr *getSizeOfExprArg(const Expr *E) { |
10157 | if (const UnaryExprOrTypeTraitExpr *SizeOf = getAsSizeOfExpr(E)) |
10158 | if (!SizeOf->isArgumentType()) |
10159 | return SizeOf->getArgumentExpr()->IgnoreParenImpCasts(); |
10160 | return nullptr; |
10161 | } |
10162 | |
10163 | |
10164 | static QualType getSizeOfArgType(const Expr *E) { |
10165 | if (const UnaryExprOrTypeTraitExpr *SizeOf = getAsSizeOfExpr(E)) |
10166 | return SizeOf->getTypeOfArgument(); |
10167 | return QualType(); |
10168 | } |
10169 | |
10170 | namespace { |
10171 | |
10172 | struct SearchNonTrivialToInitializeField |
10173 | : DefaultInitializedTypeVisitor<SearchNonTrivialToInitializeField> { |
10174 | using Super = |
10175 | DefaultInitializedTypeVisitor<SearchNonTrivialToInitializeField>; |
10176 | |
10177 | SearchNonTrivialToInitializeField(const Expr *E, Sema &S) : E(E), S(S) {} |
10178 | |
10179 | void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT, |
10180 | SourceLocation SL) { |
10181 | if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { |
10182 | asDerived().visitArray(PDIK, AT, SL); |
10183 | return; |
10184 | } |
10185 | |
10186 | Super::visitWithKind(PDIK, FT, SL); |
10187 | } |
10188 | |
10189 | void visitARCStrong(QualType FT, SourceLocation SL) { |
10190 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); |
10191 | } |
10192 | void visitARCWeak(QualType FT, SourceLocation SL) { |
10193 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); |
10194 | } |
10195 | void visitStruct(QualType FT, SourceLocation SL) { |
10196 | for (const FieldDecl *FD : FT->castAs<RecordType>()->getDecl()->fields()) |
10197 | visit(FD->getType(), FD->getLocation()); |
10198 | } |
10199 | void visitArray(QualType::PrimitiveDefaultInitializeKind PDIK, |
10200 | const ArrayType *AT, SourceLocation SL) { |
10201 | visit(getContext().getBaseElementType(AT), SL); |
10202 | } |
10203 | void visitTrivial(QualType FT, SourceLocation SL) {} |
10204 | |
10205 | static void diag(QualType RT, const Expr *E, Sema &S) { |
10206 | SearchNonTrivialToInitializeField(E, S).visitStruct(RT, SourceLocation()); |
10207 | } |
10208 | |
10209 | ASTContext &getContext() { return S.getASTContext(); } |
10210 | |
10211 | const Expr *E; |
10212 | Sema &S; |
10213 | }; |
10214 | |
10215 | struct SearchNonTrivialToCopyField |
10216 | : CopiedTypeVisitor<SearchNonTrivialToCopyField, false> { |
10217 | using Super = CopiedTypeVisitor<SearchNonTrivialToCopyField, false>; |
10218 | |
10219 | SearchNonTrivialToCopyField(const Expr *E, Sema &S) : E(E), S(S) {} |
10220 | |
10221 | void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType FT, |
10222 | SourceLocation SL) { |
10223 | if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { |
10224 | asDerived().visitArray(PCK, AT, SL); |
10225 | return; |
10226 | } |
10227 | |
10228 | Super::visitWithKind(PCK, FT, SL); |
10229 | } |
10230 | |
10231 | void visitARCStrong(QualType FT, SourceLocation SL) { |
10232 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); |
10233 | } |
10234 | void visitARCWeak(QualType FT, SourceLocation SL) { |
10235 | S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); |
10236 | } |
10237 | void visitStruct(QualType FT, SourceLocation SL) { |
10238 | for (const FieldDecl *FD : FT->castAs<RecordType>()->getDecl()->fields()) |
10239 | visit(FD->getType(), FD->getLocation()); |
10240 | } |
10241 | void visitArray(QualType::PrimitiveCopyKind PCK, const ArrayType *AT, |
10242 | SourceLocation SL) { |
10243 | visit(getContext().getBaseElementType(AT), SL); |
10244 | } |
10245 | void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT, |
10246 | SourceLocation SL) {} |
10247 | void visitTrivial(QualType FT, SourceLocation SL) {} |
10248 | void visitVolatileTrivial(QualType FT, SourceLocation SL) {} |
10249 | |
10250 | static void diag(QualType RT, const Expr *E, Sema &S) { |
10251 | SearchNonTrivialToCopyField(E, S).visitStruct(RT, SourceLocation()); |
10252 | } |
10253 | |
10254 | ASTContext &getContext() { return S.getASTContext(); } |
10255 | |
10256 | const Expr *E; |
10257 | Sema &S; |
10258 | }; |
10259 | |
10260 | } |
10261 | |
10262 | |
10263 | static bool doesExprLikelyComputeSize(const Expr *SizeofExpr) { |
10264 | SizeofExpr = SizeofExpr->IgnoreParenImpCasts(); |
10265 | |
10266 | if (const auto *BO = dyn_cast<BinaryOperator>(SizeofExpr)) { |
10267 | if (BO->getOpcode() != BO_Mul && BO->getOpcode() != BO_Add) |
10268 | return false; |
10269 | |
10270 | return doesExprLikelyComputeSize(BO->getLHS()) || |
10271 | doesExprLikelyComputeSize(BO->getRHS()); |
10272 | } |
10273 | |
10274 | return getAsSizeOfExpr(SizeofExpr) != nullptr; |
10275 | } |
10276 | |
10277 | |
10278 | |
10279 | |
10280 | |
10281 | |
10282 | |
10283 | |
10284 | |
10285 | |
10286 | |
10287 | static bool isArgumentExpandedFromMacro(SourceManager &SM, |
10288 | SourceLocation CallLoc, |
10289 | SourceLocation ArgLoc) { |
10290 | if (!CallLoc.isMacroID()) |
10291 | return SM.getFileID(CallLoc) != SM.getFileID(ArgLoc); |
10292 | |
10293 | return SM.getFileID(SM.getImmediateMacroCallerLoc(CallLoc)) != |
10294 | SM.getFileID(SM.getImmediateMacroCallerLoc(ArgLoc)); |
10295 | } |
10296 | |
10297 | |
10298 | |
10299 | static void CheckMemaccessSize(Sema &S, unsigned BId, const CallExpr *Call) { |
10300 | if (BId != Builtin::BImemset && BId != Builtin::BIbzero) |
10301 | return; |
10302 | |
10303 | const Expr *SizeArg = |
10304 | Call->getArg(BId == Builtin::BImemset ? 2 : 1)->IgnoreImpCasts(); |
10305 | |
10306 | auto isLiteralZero = [](const Expr *E) { |
10307 | return isa<IntegerLiteral>(E) && cast<IntegerLiteral>(E)->getValue() == 0; |
10308 | }; |
10309 | |
10310 | |
10311 | SourceLocation CallLoc = Call->getRParenLoc(); |
10312 | SourceManager &SM = S.getSourceManager(); |
10313 | if (isLiteralZero(SizeArg) && |
10314 | !isArgumentExpandedFromMacro(SM, CallLoc, SizeArg->getExprLoc())) { |
10315 | |
10316 | SourceLocation DiagLoc = SizeArg->getExprLoc(); |
10317 | |
10318 | |
10319 | |
10320 | if (BId == Builtin::BIbzero || |
10321 | (CallLoc.isMacroID() && Lexer::getImmediateMacroName( |
10322 | CallLoc, SM, S.getLangOpts()) == "bzero")) { |
10323 | S.Diag(DiagLoc, diag::warn_suspicious_bzero_size); |
10324 | S.Diag(DiagLoc, diag::note_suspicious_bzero_size_silence); |
10325 | } else if (!isLiteralZero(Call->getArg(1)->IgnoreImpCasts())) { |
10326 | S.Diag(DiagLoc, diag::warn_suspicious_sizeof_memset) << 0; |
10327 | S.Diag(DiagLoc, diag::note_suspicious_sizeof_memset_silence) << 0; |
10328 | } |
10329 | return; |
10330 | } |
10331 | |
10332 | |
10333 | |
10334 | |
10335 | if (BId == Builtin::BImemset && |
10336 | doesExprLikelyComputeSize(Call->getArg(1)) && |
10337 | !doesExprLikelyComputeSize(Call->getArg(2))) { |
10338 | SourceLocation DiagLoc = Call->getArg(1)->getExprLoc(); |
10339 | S.Diag(DiagLoc, diag::warn_suspicious_sizeof_memset) << 1; |
10340 | S.Diag(DiagLoc, diag::note_suspicious_sizeof_memset_silence) << 1; |
10341 | return; |
10342 | } |
10343 | } |
10344 | |
10345 | |
10346 | |
10347 | |
10348 | |
10349 | |
10350 | |
10351 | |
10352 | void Sema::CheckMemaccessArguments(const CallExpr *Call, |
10353 | unsigned BId, |
10354 | IdentifierInfo *FnName) { |
10355 | assert(BId != 0); |
10356 | |
10357 | |
10358 | |
10359 | unsigned ExpectedNumArgs = |
10360 | (BId == Builtin::BIstrndup || BId == Builtin::BIbzero ? 2 : 3); |
10361 | if (Call->getNumArgs() < ExpectedNumArgs) |
10362 | return; |
10363 | |
10364 | unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIbzero || |
10365 | BId == Builtin::BIstrndup ? 1 : 2); |
10366 | unsigned LenArg = |
10367 | (BId == Builtin::BIbzero || BId == Builtin::BIstrndup ? 1 : 2); |
10368 | const Expr *LenExpr = Call->getArg(LenArg)->IgnoreParenImpCasts(); |
10369 | |
10370 | if (CheckMemorySizeofForComparison(*this, LenExpr, FnName, |
10371 | Call->getBeginLoc(), Call->getRParenLoc())) |
10372 | return; |
10373 | |
10374 | |
10375 | CheckMemaccessSize(*this, BId, Call); |
10376 | |
10377 | |
10378 | QualType SizeOfArgTy = getSizeOfArgType(LenExpr); |
10379 | const Expr *SizeOfArg = getSizeOfExprArg(LenExpr); |
10380 | llvm::FoldingSetNodeID SizeOfArgID; |
10381 | |
10382 | |
10383 | |
10384 | |
10385 | QualType FirstArgTy = Call->getArg(0)->IgnoreParenImpCasts()->getType(); |
10386 | if (BId == Builtin::BIbzero && !FirstArgTy->getAs<PointerType>()) |
10387 | return; |
10388 | |
10389 | for (unsigned ArgIdx = 0; ArgIdx != LastArg; ++ArgIdx) { |
10390 | const Expr *Dest = Call->getArg(ArgIdx)->IgnoreParenImpCasts(); |
10391 | SourceRange ArgRange = Call->getArg(ArgIdx)->getSourceRange(); |
10392 | |
10393 | QualType DestTy = Dest->getType(); |
10394 | QualType PointeeTy; |
10395 | if (const PointerType *DestPtrTy = DestTy->getAs<PointerType>()) { |
10396 | PointeeTy = DestPtrTy->getPointeeType(); |
10397 | |
10398 | |
10399 | |
10400 | if (PointeeTy->isVoidType()) |
10401 | continue; |
10402 | |
10403 | |
10404 | |
10405 | |
10406 | |
10407 | if (SizeOfArg && |
10408 | !Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, |
10409 | SizeOfArg->getExprLoc())) { |
10410 | |
10411 | |
10412 | if (SizeOfArgID == llvm::FoldingSetNodeID()) |
10413 | SizeOfArg->Profile(SizeOfArgID, Context, true); |
10414 | llvm::FoldingSetNodeID DestID; |
10415 | Dest->Profile(DestID, Context, true); |
10416 | if (DestID == SizeOfArgID) { |
10417 | |
10418 | |
10419 | unsigned ActionIdx = 0; |
10420 | StringRef ReadableName = FnName->getName(); |
10421 | |
10422 | if (const UnaryOperator *UnaryOp = dyn_cast<UnaryOperator>(Dest)) |
10423 | if (UnaryOp->getOpcode() == UO_AddrOf) |
10424 | ActionIdx = 1; |
10425 | if (!PointeeTy->isIncompleteType() && |
10426 | (Context.getTypeSize(PointeeTy) == Context.getCharWidth())) |
10427 | ActionIdx = 2; |
10428 | |
10429 | |
10430 | |
10431 | |
10432 | SourceLocation SL = SizeOfArg->getExprLoc(); |
10433 | SourceRange DSR = Dest->getSourceRange(); |
10434 | SourceRange SSR = SizeOfArg->getSourceRange(); |
10435 | SourceManager &SM = getSourceManager(); |
10436 | |
10437 | if (SM.isMacroArgExpansion(SL)) { |
10438 | ReadableName = Lexer::getImmediateMacroName(SL, SM, LangOpts); |
10439 | SL = SM.getSpellingLoc(SL); |
10440 | DSR = SourceRange(SM.getSpellingLoc(DSR.getBegin()), |
10441 | SM.getSpellingLoc(DSR.getEnd())); |
10442 | SSR = SourceRange(SM.getSpellingLoc(SSR.getBegin()), |
10443 | SM.getSpellingLoc(SSR.getEnd())); |
10444 | } |
10445 | |
10446 | DiagRuntimeBehavior(SL, SizeOfArg, |
10447 | PDiag(diag::warn_sizeof_pointer_expr_memaccess) |
10448 | << ReadableName |
10449 | << PointeeTy |
10450 | << DestTy |
10451 | << DSR |
10452 | << SSR); |
10453 | DiagRuntimeBehavior(SL, SizeOfArg, |
10454 | PDiag(diag::warn_sizeof_pointer_expr_memaccess_note) |
10455 | << ActionIdx |
10456 | << SSR); |
10457 | |
10458 | break; |
10459 | } |
10460 | } |
10461 | |
10462 | |
10463 | |
10464 | |
10465 | if (SizeOfArgTy != QualType()) { |
10466 | if (PointeeTy->isRecordType() && |
10467 | Context.typesAreCompatible(SizeOfArgTy, DestTy)) { |
10468 | DiagRuntimeBehavior(LenExpr->getExprLoc(), Dest, |
10469 | PDiag(diag::warn_sizeof_pointer_type_memaccess) |
10470 | << FnName << SizeOfArgTy << ArgIdx |
10471 | << PointeeTy << Dest->getSourceRange() |
10472 | << LenExpr->getSourceRange()); |
10473 | break; |
10474 | } |
10475 | } |
10476 | } else if (DestTy->isArrayType()) { |
10477 | PointeeTy = DestTy; |
10478 | } |
10479 | |
10480 | if (PointeeTy == QualType()) |
10481 | continue; |
10482 | |
10483 | |
10484 | bool IsContained; |
10485 | if (const CXXRecordDecl *ContainedRD = |
10486 | getContainedDynamicClass(PointeeTy, IsContained)) { |
10487 | |
10488 | unsigned OperationType = 0; |
10489 | const bool IsCmp = BId == Builtin::BImemcmp || BId == Builtin::BIbcmp; |
10490 | |
10491 | |
10492 | if (ArgIdx != 0 || IsCmp) { |
10493 | if (BId == Builtin::BImemcpy) |
10494 | OperationType = 1; |
10495 | else if(BId == Builtin::BImemmove) |
10496 | OperationType = 2; |
10497 | else if (IsCmp) |
10498 | OperationType = 3; |
10499 | } |
10500 | |
10501 | DiagRuntimeBehavior(Dest->getExprLoc(), Dest, |
10502 | PDiag(diag::warn_dyn_class_memaccess) |
10503 | << (IsCmp ? ArgIdx + 2 : ArgIdx) << FnName |
10504 | << IsContained << ContainedRD << OperationType |
10505 | << Call->getCallee()->getSourceRange()); |
10506 | } else if (PointeeTy.hasNonTrivialObjCLifetime() && |
10507 | BId != Builtin::BImemset) |
10508 | DiagRuntimeBehavior( |
10509 | Dest->getExprLoc(), Dest, |
10510 | PDiag(diag::warn_arc_object_memaccess) |
10511 | << ArgIdx << FnName << PointeeTy |
10512 | << Call->getCallee()->getSourceRange()); |
10513 | else if (const auto *RT = PointeeTy->getAs<RecordType>()) { |
10514 | if ((BId == Builtin::BImemset || BId == Builtin::BIbzero) && |
10515 | RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize()) { |
10516 | DiagRuntimeBehavior(Dest->getExprLoc(), Dest, |
10517 | PDiag(diag::warn_cstruct_memaccess) |
10518 | << ArgIdx << FnName << PointeeTy << 0); |
10519 | SearchNonTrivialToInitializeField::diag(PointeeTy, Dest, *this); |
10520 | } else if ((BId == Builtin::BImemcpy || BId == Builtin::BImemmove) && |
10521 | RT->getDecl()->isNonTrivialToPrimitiveCopy()) { |
10522 | DiagRuntimeBehavior(Dest->getExprLoc(), Dest, |
10523 | PDiag(diag::warn_cstruct_memaccess) |
10524 | << ArgIdx << FnName << PointeeTy << 1); |
10525 | SearchNonTrivialToCopyField::diag(PointeeTy, Dest, *this); |
10526 | } else { |
10527 | continue; |
10528 | } |
10529 | } else |
10530 | continue; |
10531 | |
10532 | DiagRuntimeBehavior( |
10533 | Dest->getExprLoc(), Dest, |
10534 | PDiag(diag::note_bad_memaccess_silence) |
10535 | << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)")); |
10536 | break; |
10537 | } |
10538 | } |
10539 | |
10540 | |
10541 | |
10542 | |
10543 | static const Expr *ignoreLiteralAdditions(const Expr *Ex, ASTContext &Ctx) { |
10544 | Ex = Ex->IgnoreParenCasts(); |
10545 | |
10546 | while (true) { |
10547 | const BinaryOperator * BO = dyn_cast<BinaryOperator>(Ex); |
10548 | if (!BO || !BO->isAdditiveOp()) |
10549 | break; |
10550 | |
10551 | const Expr *RHS = BO->getRHS()->IgnoreParenCasts(); |
10552 | const Expr *LHS = BO->getLHS()->IgnoreParenCasts(); |
10553 | |
10554 | if (isa<IntegerLiteral>(RHS)) |
10555 | Ex = LHS; |
10556 | else if (isa<IntegerLiteral>(LHS)) |
10557 | Ex = RHS; |
10558 | else |
10559 | break; |
10560 | } |
10561 | |
10562 | return Ex; |
10563 | } |
10564 | |
10565 | static bool isConstantSizeArrayWithMoreThanOneElement(QualType Ty, |
10566 | ASTContext &Context) { |
10567 | |
10568 | if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(Ty)) { |
10569 | |
10570 | if (CAT->getSize().getSExtValue() <= 1) |
10571 | return false; |
10572 | } else if (!Ty->isVariableArrayType()) { |
10573 | return false; |
10574 | } |
10575 | return true; |
10576 | } |
10577 | |
10578 | |
10579 | |
10580 | void Sema::CheckStrlcpycatArguments(const CallExpr *Call, |
10581 | IdentifierInfo *FnName) { |
10582 | |
10583 | |
10584 | unsigned NumArgs = Call->getNumArgs(); |
10585 | if ((NumArgs != 3) && (NumArgs != 4)) |
10586 | return; |
10587 | |
10588 | const Expr *SrcArg = ignoreLiteralAdditions(Call->getArg(1), Context); |
10589 | const Expr *SizeArg = ignoreLiteralAdditions(Call->getArg(2), Context); |
10590 | const Expr *CompareWithSrc = nullptr; |
10591 | |
10592 | if (CheckMemorySizeofForComparison(*this, SizeArg, FnName, |
10593 | Call->getBeginLoc(), Call->getRParenLoc())) |
10594 | return; |
10595 | |
10596 | |
10597 | if (const Expr *Ex = getSizeOfExprArg(SizeArg)) |
10598 | CompareWithSrc = Ex; |
10599 | else { |
10600 | |
10601 | if (const CallExpr *SizeCall = dyn_cast<CallExpr>(SizeArg)) { |
10602 | if (SizeCall->getBuiltinCallee() == Builtin::BIstrlen && |
10603 | SizeCall->getNumArgs() == 1) |
10604 | CompareWithSrc = ignoreLiteralAdditions(SizeCall->getArg(0), Context); |
10605 | } |
10606 | } |
10607 | |
10608 | if (!CompareWithSrc) |
10609 | return; |
10610 | |
10611 | |
10612 | |
10613 | |
10614 | |
10615 | const DeclRefExpr *SrcArgDRE = dyn_cast<DeclRefExpr>(SrcArg); |
10616 | if (!SrcArgDRE) |
10617 | return; |
10618 | |
10619 | const DeclRefExpr *CompareWithSrcDRE = dyn_cast<DeclRefExpr>(CompareWithSrc); |
10620 | if (!CompareWithSrcDRE || |
10621 | SrcArgDRE->getDecl() != CompareWithSrcDRE->getDecl()) |
10622 | return; |
10623 | |
10624 | const Expr *OriginalSizeArg = Call->getArg(2); |
10625 | Diag(CompareWithSrcDRE->getBeginLoc(), diag::warn_strlcpycat_wrong_size) |
10626 | << OriginalSizeArg->getSourceRange() << FnName; |
10627 | |
10628 | |
10629 | |
10630 | |
10631 | |
10632 | const Expr *DstArg = Call->getArg(0)->IgnoreParenImpCasts(); |
10633 | if (!isConstantSizeArrayWithMoreThanOneElement(DstArg->getType(), Context)) |
10634 | return; |
10635 | |
10636 | SmallString<128> sizeString; |
10637 | llvm::raw_svector_ostream OS(sizeString); |
10638 | OS << "sizeof("; |
10639 | DstArg->printPretty(OS, nullptr, getPrintingPolicy()); |
10640 | OS << ")"; |
10641 | |
10642 | Diag(OriginalSizeArg->getBeginLoc(), diag::note_strlcpycat_wrong_size) |
10643 | << FixItHint::CreateReplacement(OriginalSizeArg->getSourceRange(), |
10644 | OS.str()); |
10645 | } |
10646 | |
10647 | |
10648 | static bool referToTheSameDecl(const Expr *E1, const Expr *E2) { |
10649 | if (const DeclRefExpr *D1 = dyn_cast_or_null<DeclRefExpr>(E1)) |
10650 | if (const DeclRefExpr *D2 = dyn_cast_or_null<DeclRefExpr>(E2)) |
10651 | return D1->getDecl() == D2->getDecl(); |
10652 | return false; |
10653 | } |
10654 | |
10655 | static const Expr *getStrlenExprArg(const Expr *E) { |
10656 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { |
10657 | const FunctionDecl *FD = CE->getDirectCallee(); |
10658 | if (!FD || FD->getMemoryFunctionKind() != Builtin::BIstrlen) |
10659 | return nullptr; |
10660 | return CE->getArg(0)->IgnoreParenCasts(); |
10661 | } |
10662 | return nullptr; |
10663 | } |
10664 | |
10665 | |
10666 | |
10667 | |
10668 | void Sema::CheckStrncatArguments(const CallExpr *CE, |
10669 | IdentifierInfo *FnName) { |
10670 | |
10671 | if (CE->getNumArgs() < 3) |
10672 | return; |
10673 | const Expr *DstArg = CE->getArg(0)->IgnoreParenCasts(); |
10674 | const Expr *SrcArg = CE->getArg(1)->IgnoreParenCasts(); |
10675 | const Expr *LenArg = CE->getArg(2)->IgnoreParenCasts(); |
10676 | |
10677 | if (CheckMemorySizeofForComparison(*this, LenArg, FnName, CE->getBeginLoc(), |
10678 | CE->getRParenLoc())) |
10679 | return; |
10680 | |
10681 | |
10682 | |
10683 | unsigned PatternType = 0; |
10684 | if (const Expr *SizeOfArg = getSizeOfExprArg(LenArg)) { |
10685 | |
10686 | if (referToTheSameDecl(SizeOfArg, DstArg)) |
10687 | PatternType = 1; |
10688 | |
10689 | else if (referToTheSameDecl(SizeOfArg, SrcArg)) |
10690 | PatternType = 2; |
10691 | } else if (const BinaryOperator *BE = dyn_cast<BinaryOperator>(LenArg)) { |
10692 | if (BE->getOpcode() == BO_Sub) { |
10693 | const Expr *L = BE->getLHS()->IgnoreParenCasts(); |
10694 | const Expr *R = BE->getRHS()->IgnoreParenCasts(); |
10695 | |
10696 | if (referToTheSameDecl(DstArg, getSizeOfExprArg(L)) && |
10697 | referToTheSameDecl(DstArg, getStrlenExprArg(R))) |
10698 | PatternType = 1; |
10699 | |
10700 | else if (referToTheSameDecl(SrcArg, getSizeOfExprArg(L))) |
10701 | PatternType = 2; |
10702 | } |
10703 | } |
10704 | |
10705 | if (PatternType == 0) |
10706 | return; |
10707 | |
10708 | |
10709 | SourceLocation SL = LenArg->getBeginLoc(); |
10710 | SourceRange SR = LenArg->getSourceRange(); |
10711 | SourceManager &SM = getSourceManager(); |
10712 | |
10713 | |
10714 | if (SM.isMacroArgExpansion(SL)) { |
10715 | SL = SM.getSpellingLoc(SL); |
10716 | SR = SourceRange(SM.getSpellingLoc(SR.getBegin()), |
10717 | SM.getSpellingLoc(SR.getEnd())); |
10718 | } |
10719 | |
10720 | |
10721 | QualType DstTy = DstArg->getType(); |
10722 | bool isKnownSizeArray = isConstantSizeArrayWithMoreThanOneElement(DstTy, |
10723 | Context); |
10724 | if (!isKnownSizeArray) { |
10725 | if (PatternType == 1) |
10726 | Diag(SL, diag::warn_strncat_wrong_size) << SR; |
10727 | else |
10728 | Diag(SL, diag::warn_strncat_src_size) << SR; |
10729 | return; |
10730 | } |
10731 | |
10732 | if (PatternType == 1) |
10733 | Diag(SL, diag::warn_strncat_large_size) << SR; |
10734 | else |
10735 | Diag(SL, diag::warn_strncat_src_size) << SR; |
10736 | |
10737 | SmallString<128> sizeString; |
10738 | llvm::raw_svector_ostream OS(sizeString); |
10739 | OS << "sizeof("; |
10740 | DstArg->printPretty(OS, nullptr, getPrintingPolicy()); |
10741 | OS << ") - "; |
10742 | OS << "strlen("; |
10743 | DstArg->printPretty(OS, nullptr, getPrintingPolicy()); |
10744 | OS << ") - 1"; |
10745 | |
10746 | Diag(SL, diag::note_strncat_wrong_size) |
10747 | << FixItHint::CreateReplacement(SR, OS.str()); |
10748 | } |
10749 | |
10750 | namespace { |
10751 | void CheckFreeArgumentsOnLvalue(Sema &S, const std::string &CalleeName, |
10752 | const UnaryOperator *UnaryExpr, const Decl *D) { |
10753 | if (isa<FieldDecl, FunctionDecl, VarDecl>(D)) { |
10754 | S.Diag(UnaryExpr->getBeginLoc(), diag::warn_free_nonheap_object) |
10755 | << CalleeName << 0 << cast<NamedDecl>(D); |
10756 | return; |
10757 | } |
10758 | } |
10759 | |
10760 | void CheckFreeArgumentsAddressof(Sema &S, const std::string &CalleeName, |
10761 | const UnaryOperator *UnaryExpr) { |
10762 | if (const auto *Lvalue = dyn_cast<DeclRefExpr>(UnaryExpr->getSubExpr())) { |
10763 | const Decl *D = Lvalue->getDecl(); |
10764 | if (isa<DeclaratorDecl>(D)) |
10765 | if (!dyn_cast<DeclaratorDecl>(D)->getType()->isReferenceType()) |
10766 | return CheckFreeArgumentsOnLvalue(S, CalleeName, UnaryExpr, D); |
10767 | } |
10768 | |
10769 | if (const auto *Lvalue = dyn_cast<MemberExpr>(UnaryExpr->getSubExpr())) |
10770 | return CheckFreeArgumentsOnLvalue(S, CalleeName, UnaryExpr, |
10771 | Lvalue->getMemberDecl()); |
10772 | } |
10773 | |
10774 | void CheckFreeArgumentsPlus(Sema &S, const std::string &CalleeName, |
10775 | const UnaryOperator *UnaryExpr) { |
10776 | const auto *Lambda = dyn_cast<LambdaExpr>( |
10777 | UnaryExpr->getSubExpr()->IgnoreImplicitAsWritten()->IgnoreParens()); |
10778 | if (!Lambda) |
10779 | return; |
10780 | |
10781 | S.Diag(Lambda->getBeginLoc(), diag::warn_free_nonheap_object) |
10782 | << CalleeName << 2 ; |
10783 | } |
10784 | |
10785 | void CheckFreeArgumentsStackArray(Sema &S, const std::string &CalleeName, |
10786 | const DeclRefExpr *Lvalue) { |
10787 | const auto *Var = dyn_cast<VarDecl>(Lvalue->getDecl()); |
10788 | if (Var == nullptr) |
10789 | return; |
10790 | |
10791 | S.Diag(Lvalue->getBeginLoc(), diag::warn_free_nonheap_object) |
10792 | << CalleeName << 0 << Var; |
10793 | } |
10794 | |
10795 | void CheckFreeArgumentsCast(Sema &S, const std::string &CalleeName, |
10796 | const CastExpr *Cast) { |
10797 | SmallString<128> SizeString; |
10798 | llvm::raw_svector_ostream OS(SizeString); |
10799 | |
10800 | clang::CastKind Kind = Cast->getCastKind(); |
10801 | if (Kind == clang::CK_BitCast && |
10802 | !Cast->getSubExpr()->getType()->isFunctionPointerType()) |
10803 | return; |
10804 | if (Kind == clang::CK_IntegralToPointer && |
10805 | !isa<IntegerLiteral>( |
10806 | Cast->getSubExpr()->IgnoreParenImpCasts()->IgnoreParens())) |
10807 | return; |
10808 | |
10809 | switch (Cast->getCastKind()) { |
10810 | case clang::CK_BitCast: |
10811 | case clang::CK_IntegralToPointer: |
10812 | case clang::CK_FunctionToPointerDecay: |
10813 | OS << '\''; |
10814 | Cast->printPretty(OS, nullptr, S.getPrintingPolicy()); |
10815 | OS << '\''; |
10816 | break; |
10817 | default: |
10818 | return; |
10819 | } |
10820 | |
10821 | S.Diag(Cast->getBeginLoc(), diag::warn_free_nonheap_object) |
10822 | << CalleeName << 0 << OS.str(); |
10823 | } |
10824 | } |
10825 | |
10826 | |
10827 | void Sema::CheckFreeArguments(const CallExpr *E) { |
10828 | const std::string CalleeName = |
10829 | dyn_cast<FunctionDecl>(E->getCalleeDecl())->getQualifiedNameAsString(); |
| 12 | | Assuming the object is not a 'FunctionDecl' | |
|
| 13 | | Called C++ object pointer is null |
|
10830 | |
10831 | { |
10832 | const Expr *Arg = E->getArg(0)->IgnoreParenCasts(); |
10833 | if (const auto *UnaryExpr = dyn_cast<UnaryOperator>(Arg)) |
10834 | switch (UnaryExpr->getOpcode()) { |
10835 | case UnaryOperator::Opcode::UO_AddrOf: |
10836 | return CheckFreeArgumentsAddressof(*this, CalleeName, UnaryExpr); |
10837 | case UnaryOperator::Opcode::UO_Plus: |
10838 | return CheckFreeArgumentsPlus(*this, CalleeName, UnaryExpr); |
10839 | default: |
10840 | break; |
10841 | } |
10842 | |
10843 | if (const auto *Lvalue = dyn_cast<DeclRefExpr>(Arg)) |
10844 | if (Lvalue->getType()->isArrayType()) |
10845 | return CheckFreeArgumentsStackArray(*this, CalleeName, Lvalue); |
10846 | |
10847 | if (const auto *Label = dyn_cast<AddrLabelExpr>(Arg)) { |
10848 | Diag(Label->getBeginLoc(), diag::warn_free_nonheap_object) |
10849 | << CalleeName << 0 << Label->getLabel()->getIdentifier(); |
10850 | return; |
10851 | } |
10852 | |
10853 | if (isa<BlockExpr>(Arg)) { |
10854 | Diag(Arg->getBeginLoc(), diag::warn_free_nonheap_object) |
10855 | << CalleeName << 1 ; |
10856 | return; |
10857 | } |
10858 | } |
10859 | |
10860 | if (const auto *Cast = dyn_cast<CastExpr>(E->getArg(0))) |
10861 | return CheckFreeArgumentsCast(*this, CalleeName, Cast); |
10862 | } |
10863 | |
10864 | void |
10865 | Sema::CheckReturnValExpr(Expr *RetValExp, QualType lhsType, |
10866 | SourceLocation ReturnLoc, |
10867 | bool isObjCMethod, |
10868 | const AttrVec *Attrs, |
10869 | const FunctionDecl *FD) { |
10870 | |
10871 | if (((Attrs && hasSpecificAttr<ReturnsNonNullAttr>(*Attrs)) || |
10872 | (!isObjCMethod && isNonNullType(Context, lhsType))) && |
10873 | CheckNonNullExpr(*this, RetValExp)) |
10874 | Diag(ReturnLoc, diag::warn_null_ret) |
10875 | << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange(); |
10876 | |
10877 | |
10878 | |
10879 | |
10880 | |
10881 | |
10882 | if (FD) { |
10883 | OverloadedOperatorKind Op = FD->getOverloadedOperator(); |
10884 | if (Op == OO_New || Op == OO_Array_New) { |
10885 | const FunctionProtoType *Proto |
10886 | = FD->getType()->castAs<FunctionProtoType>(); |
10887 | if (!Proto->isNothrow(true) && |
10888 | CheckNonNullExpr(*this, RetValExp)) |
10889 | Diag(ReturnLoc, diag::warn_operator_new_returns_null) |
10890 | << FD << getLangOpts().CPlusPlus11; |
10891 | } |
10892 | } |
10893 | |
10894 | |
10895 | |
10896 | if (Context.getTargetInfo().getTriple().isPPC64()) |
10897 | CheckPPCMMAType(RetValExp->getType(), ReturnLoc); |
10898 | } |
10899 | |
10900 | |
10901 | |
10902 | |
10903 | |
10904 | |
10905 | void Sema::CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr *RHS) { |
10906 | Expr* LeftExprSansParen = LHS->IgnoreParenImpCasts(); |
10907 | Expr* RightExprSansParen = RHS->IgnoreParenImpCasts(); |
10908 | |
10909 | |
10910 | |
10911 | if (DeclRefExpr* DRL = dyn_cast<DeclRefExpr>(LeftExprSansParen)) |
10912 | if (DeclRefExpr* DRR = dyn_cast<DeclRefExpr>(RightExprSansParen)) |
10913 | if (DRL->getDecl() == DRR->getDecl()) |
10914 | return; |
10915 | |
10916 | |
10917 | |
10918 | |
10919 | |
10920 | |
10921 | if (FloatingLiteral* FLL = dyn_cast<FloatingLiteral>(LeftExprSansParen)) { |
10922 | if (FLL->isExact()) |
10923 | return; |
10924 | } else |
10925 | if (FloatingLiteral* FLR = dyn_cast<FloatingLiteral>(RightExprSansParen)) |
10926 | if (FLR->isExact()) |
10927 | return; |
10928 | |
10929 | |
10930 | if (CallExpr* CL = dyn_cast<CallExpr>(LeftExprSansParen)) |
10931 | if (CL->getBuiltinCallee()) |
10932 | return; |
10933 | |
10934 | if (CallExpr* CR = dyn_cast<CallExpr>(RightExprSansParen)) |
10935 | if (CR->getBuiltinCallee()) |
10936 | return; |
10937 | |
10938 | |
10939 | Diag(Loc, diag::warn_floatingpoint_eq) |
10940 | << LHS->getSourceRange() << RHS->getSourceRange(); |
10941 | } |
10942 | |
10943 | |
10944 | |
10945 | |
10946 | namespace { |
10947 | |
10948 | |
10949 | |
10950 | struct IntRange { |
10951 | |
10952 | |
10953 | unsigned Width; |
10954 | |
10955 | |
10956 | |
10957 | |
10958 | bool NonNegative; |
10959 | |
10960 | IntRange(unsigned Width, bool NonNegative) |
10961 | : Width(Width), NonNegative(NonNegative) {} |
10962 | |
10963 | |
10964 | unsigned valueBits() const { |
10965 | return NonNegative ? Width : Width - 1; |
10966 | } |
10967 | |
10968 | |
10969 | static IntRange forBoolType() { |
10970 | return IntRange(1, true); |
10971 | } |
10972 | |
10973 | |
10974 | static IntRange forValueOfType(ASTContext &C, QualType T) { |
10975 | return forValueOfCanonicalType(C, |
10976 | T->getCanonicalTypeInternal().getTypePtr()); |
10977 | } |
10978 | |
10979 | |
10980 | static IntRange forValueOfCanonicalType(ASTContext &C, const Type *T) { |
10981 | assert(T->isCanonicalUnqualified()); |
10982 | |
10983 | if (const VectorType *VT = dyn_cast<VectorType>(T)) |
10984 | T = VT->getElementType().getTypePtr(); |
10985 | if (const ComplexType *CT = dyn_cast<ComplexType>(T)) |
10986 | T = CT->getElementType().getTypePtr(); |
10987 | if (const AtomicType *AT = dyn_cast<AtomicType>(T)) |
10988 | T = AT->getValueType().getTypePtr(); |
10989 | |
10990 | if (!C.getLangOpts().CPlusPlus) { |
10991 | |
10992 | if (const EnumType *ET = dyn_cast<EnumType>(T)) |
10993 | T = ET->getDecl()->getIntegerType().getDesugaredType(C).getTypePtr(); |
10994 | } else if (const EnumType *ET = dyn_cast<EnumType>(T)) { |
10995 | |
10996 | EnumDecl *Enum = ET->getDecl(); |
10997 | |
10998 | |
10999 | if (Enum->isFixed()) { |
11000 | return IntRange(C.getIntWidth(QualType(T, 0)), |
11001 | !ET->isSignedIntegerOrEnumerationType()); |
11002 | } |
11003 | |
11004 | unsigned NumPositive = Enum->getNumPositiveBits(); |
11005 | unsigned NumNegative = Enum->getNumNegativeBits(); |
11006 | |
11007 | if (NumNegative == 0) |
11008 | return IntRange(NumPositive, true); |
11009 | else |
11010 | return IntRange(std::max(NumPositive + 1, NumNegative), |
11011 | false); |
11012 | } |
11013 | |
11014 | if (const auto *EIT = dyn_cast<ExtIntType>(T)) |
11015 | return IntRange(EIT->getNumBits(), EIT->isUnsigned()); |
11016 | |
11017 | const BuiltinType *BT = cast<BuiltinType>(T); |
11018 | assert(BT->isInteger()); |
11019 | |
11020 | return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); |
11021 | } |
11022 | |
11023 | |
11024 | |
11025 | |
11026 | |
11027 | |
11028 | static IntRange forTargetOfCanonicalType(ASTContext &C, const Type *T) { |
11029 | assert(T->isCanonicalUnqualified()); |
11030 | |
11031 | if (const VectorType *VT = dyn_cast<VectorType>(T)) |
11032 | T = VT->getElementType().getTypePtr(); |
11033 | if (const ComplexType *CT = dyn_cast<ComplexType>(T)) |
11034 | T = CT->getElementType().getTypePtr(); |
11035 | if (const AtomicType *AT = dyn_cast<AtomicType>(T)) |
11036 | T = AT->getValueType().getTypePtr(); |
11037 | if (const EnumType *ET = dyn_cast<EnumType>(T)) |
11038 | T = C.getCanonicalType(ET->getDecl()->getIntegerType()).getTypePtr(); |
11039 | |
11040 | if (const auto *EIT = dyn_cast<ExtIntType>(T)) |
11041 | return IntRange(EIT->getNumBits(), EIT->isUnsigned()); |
11042 | |
11043 | const BuiltinType *BT = cast<BuiltinType>(T); |
11044 | assert(BT->isInteger()); |
11045 | |
11046 | return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); |
11047 | } |
11048 | |
11049 | |
11050 | static IntRange join(IntRange L, IntRange R) { |
11051 | bool Unsigned = L.NonNegative && R.NonNegative; |
11052 | return IntRange(std::max(L.valueBits(), R.valueBits()) + !Unsigned, |
11053 | L.NonNegative && R.NonNegative); |
11054 | } |
11055 | |
11056 | |
11057 | static IntRange bit_and(IntRange L, IntRange R) { |
11058 | unsigned Bits = std::max(L.Width, R.Width); |
11059 | bool NonNegative = false; |
11060 | if (L.NonNegative) { |
11061 | Bits = std::min(Bits, L.Width); |
11062 | NonNegative = true; |
11063 | } |
11064 | if (R.NonNegative) { |
11065 | Bits = std::min(Bits, R.Width); |
11066 | NonNegative = true; |
11067 | } |
11068 | return IntRange(Bits, NonNegative); |
11069 | } |
11070 | |
11071 | |
11072 | static IntRange sum(IntRange L, IntRange R) { |
11073 | bool Unsigned = L.NonNegative && R.NonNegative; |
11074 | return IntRange(std::max(L.valueBits(), R.valueBits()) + 1 + !Unsigned, |
11075 | Unsigned); |
11076 | } |
11077 | |
11078 | |
11079 | static IntRange difference(IntRange L, IntRange R) { |
11080 | |
11081 | |
11082 | |
11083 | bool CanWiden = !L.NonNegative || !R.NonNegative; |
11084 | bool Unsigned = L.NonNegative && R.Width == 0; |
11085 | return IntRange(std::max(L.valueBits(), R.valueBits()) + CanWiden + |
11086 | !Unsigned, |
11087 | Unsigned); |
11088 | } |
11089 | |
11090 | |
11091 | static IntRange product(IntRange L, IntRange R) { |
11092 | |
11093 | |
11094 | |
11095 | bool CanWiden = !L.NonNegative && !R.NonNegative; |
11096 | bool Unsigned = L.NonNegative && R.NonNegative; |
11097 | return IntRange(L.valueBits() + R.valueBits() + CanWiden + !Unsigned, |
11098 | Unsigned); |
11099 | } |
11100 | |
11101 | |
11102 | static IntRange rem(IntRange L, IntRange R) { |
11103 | |
11104 | |
11105 | bool Unsigned = L.NonNegative; |
11106 | return IntRange(std::min(L.valueBits(), R.valueBits()) + !Unsigned, |
11107 | Unsigned); |
11108 | } |
11109 | }; |
11110 | |
11111 | } |
11112 | |
11113 | static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, |
11114 | unsigned MaxWidth) { |
11115 | if (value.isSigned() && value.isNegative()) |
11116 | return IntRange(value.getMinSignedBits(), false); |
11117 | |
11118 | if (value.getBitWidth() > MaxWidth) |
11119 | value = value.trunc(MaxWidth); |
11120 | |
11121 | |
11122 | |
11123 | return IntRange(value.getActiveBits(), true); |
11124 | } |
11125 | |
11126 | static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, |
11127 | unsigned MaxWidth) { |
11128 | if (result.isInt()) |
11129 | return GetValueRange(C, result.getInt(), MaxWidth); |
11130 | |
11131 | if (result.isVector()) { |
11132 | IntRange R = GetValueRange(C, result.getVectorElt(0), Ty, MaxWidth); |
11133 | for (unsigned i = 1, e = result.getVectorLength(); i != e; ++i) { |
11134 | IntRange El = GetValueRange(C, result.getVectorElt(i), Ty, MaxWidth); |
11135 | R = IntRange::join(R, El); |
11136 | } |
11137 | return R; |
11138 | } |
11139 | |
11140 | if (result.isComplexInt()) { |
11141 | IntRange R = GetValueRange(C, result.getComplexIntReal(), MaxWidth); |
11142 | IntRange I = GetValueRange(C, result.getComplexIntImag(), MaxWidth); |
11143 | return IntRange::join(R, I); |
11144 | } |
11145 | |
11146 | |
11147 | |
11148 | |
11149 | |
11150 | |
11151 | assert(result.isLValue() || result.isAddrLabelDiff()); |
11152 | return IntRange(MaxWidth, Ty->isUnsignedIntegerOrEnumerationType()); |
11153 | } |
11154 | |
11155 | static QualType GetExprType(const Expr *E) { |
11156 | QualType Ty = E->getType(); |
11157 | if (const AtomicType *AtomicRHS = Ty->getAs<AtomicType>()) |
11158 | Ty = AtomicRHS->getValueType(); |
11159 | return Ty; |
11160 | } |
11161 | |
11162 | |
11163 | |
11164 | |
11165 | |
11166 | |
11167 | |
11168 | |
11169 | |
11170 | static IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth, |
11171 | bool InConstantContext, bool Approximate) { |
11172 | E = E->IgnoreParens(); |
11173 | |
11174 | |
11175 | Expr::EvalResult result; |
11176 | if (E->EvaluateAsRValue(result, C, InConstantContext)) |
11177 | return GetValueRange(C, result.Val, GetExprType(E), MaxWidth); |
11178 | |
11179 | |
11180 | |
11181 | |
11182 | if (const auto *CE = dyn_cast<ImplicitCastExpr>(E)) { |
11183 | if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue) |
11184 | return GetExprRange(C, CE->getSubExpr(), MaxWidth, InConstantContext, |
11185 | Approximate); |
11186 | |
11187 | IntRange OutputTypeRange = IntRange::forValueOfType(C, GetExprType(CE)); |
11188 | |
11189 | bool isIntegerCast = CE->getCastKind() == CK_IntegralCast || |
11190 | CE->getCastKind() == CK_BooleanToSignedIntegral; |
11191 | |
11192 | |
11193 | if (!isIntegerCast) |
11194 | return OutputTypeRange; |
11195 | |
11196 | IntRange SubRange = GetExprRange(C, CE->getSubExpr(), |
11197 | std::min(MaxWidth, OutputTypeRange.Width), |
11198 | InConstantContext, Approximate); |
11199 | |
11200 | |
11201 | if (SubRange.Width >= OutputTypeRange.Width) |
11202 | return OutputTypeRange; |
11203 | |
11204 | |
11205 | |
11206 | return IntRange(SubRange.Width, |
11207 | SubRange.NonNegative || OutputTypeRange.NonNegative); |
11208 | } |
11209 | |
11210 | if (const auto *CO = dyn_cast<ConditionalOperator>(E)) { |
11211 | |
11212 | bool CondResult; |
11213 | if (CO->getCond()->EvaluateAsBooleanCondition(CondResult, C)) |
11214 | return GetExprRange(C, |
11215 | CondResult ? CO->getTrueExpr() : CO->getFalseExpr(), |
11216 | MaxWidth, InConstantContext, Approximate); |
11217 | |
11218 | |
11219 | |
11220 | |
11221 | Expr *E = CO->getTrueExpr(); |
11222 | IntRange L = E->getType()->isVoidType() |
11223 | ? IntRange{0, true} |
11224 | : GetExprRange(C, E, MaxWidth, InConstantContext, Approximate); |
11225 | E = CO->getFalseExpr(); |
11226 | IntRange R = E->getType()->isVoidType() |
11227 | ? IntRange{0, true} |
11228 | : GetExprRange(C, E, MaxWidth, InConstantContext, Approximate); |
11229 | return IntRange::join(L, R); |
11230 | } |
11231 | |
11232 | if (const auto *BO = dyn_cast<BinaryOperator>(E)) { |
11233 | IntRange (*Combine)(IntRange, IntRange) = IntRange::join; |
11234 | |
11235 | switch (BO->getOpcode()) { |
11236 | case BO_Cmp: |
11237 | llvm_unreachable("builtin <=> should have class type"); |
11238 | |
11239 | |
11240 | case BO_LAnd: |
11241 | case BO_LOr: |
11242 | case BO_LT: |
11243 | case BO_GT: |
11244 | case BO_LE: |
11245 | case BO_GE: |
11246 | case BO_EQ: |
11247 | case BO_NE: |
11248 | return IntRange::forBoolType(); |
11249 | |
11250 | |
11251 | |
11252 | case BO_MulAssign: |
11253 | case BO_DivAssign: |
11254 | case BO_RemAssign: |
11255 | case BO_AddAssign: |
11256 | case BO_SubAssign: |
11257 | case BO_XorAssign: |
11258 | case BO_OrAssign: |
11259 | |
11260 | return IntRange::forValueOfType(C, GetExprType(E)); |
11261 | |
11262 | |
11263 | |
11264 | case BO_Assign: |
11265 | |
11266 | return GetExprRange(C, BO->getRHS(), MaxWidth, InConstantContext, |
11267 | Approximate); |
11268 | |
11269 | |
11270 | case BO_PtrMemD: |
11271 | case BO_PtrMemI: |
11272 | return IntRange::forValueOfType(C, GetExprType(E)); |
11273 | |
11274 | |
11275 | case BO_And: |
11276 | case BO_AndAssign: |
11277 | Combine = IntRange::bit_and; |
11278 | break; |
11279 | |
11280 | |
11281 | case BO_Shl: |
11282 | |
11283 | |
11284 | if (IntegerLiteral *I |
11285 | = dyn_cast<IntegerLiteral>(BO->getLHS()->IgnoreParenCasts())) { |
11286 | if (I->getValue() == 1) { |
11287 | IntRange R = IntRange::forValueOfType(C, GetExprType(E)); |
11288 | return IntRange(R.Width, true); |
11289 | } |
11290 | } |
11291 | LLVM_FALLTHROUGH; |
11292 | |
11293 | case BO_ShlAssign: |
11294 | return IntRange::forValueOfType(C, GetExprType(E)); |
11295 | |
11296 | |
11297 | case BO_Shr: |
11298 | case BO_ShrAssign: { |
11299 | IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth, InConstantContext, |
11300 | Approximate); |
11301 | |
11302 | |
11303 | |
11304 | if (Optional<llvm::APSInt> shift = |
11305 | BO->getRHS()->getIntegerConstantExpr(C)) { |
11306 | if (shift->isNonNegative()) { |
11307 | unsigned zext = shift->getZExtValue(); |
11308 | if (zext >= L.Width) |
11309 | L.Width = (L.NonNegative ? 0 : 1); |
11310 | else |
11311 | L.Width -= zext; |
11312 | } |
11313 | } |
11314 | |
11315 | return L; |
11316 | } |
11317 | |
11318 | |
11319 | case BO_Comma: |
11320 | return GetExprRange(C, BO->getRHS(), MaxWidth, InConstantContext, |
11321 | Approximate); |
11322 | |
11323 | case BO_Add: |
11324 | if (!Approximate) |
11325 | Combine = IntRange::sum; |
11326 | break; |
11327 | |
11328 | case BO_Sub: |
11329 | if (BO->getLHS()->getType()->isPointerType()) |
11330 | return IntRange::forValueOfType(C, GetExprType(E)); |
11331 | if (!Approximate) |
11332 | Combine = IntRange::difference; |
11333 | break; |
11334 | |
11335 | case BO_Mul: |
11336 | if (!Approximate) |
11337 | Combine = IntRange::product; |
11338 | break; |
11339 | |
11340 | |
11341 | |
11342 | case BO_Div: { |
11343 | |
11344 | unsigned opWidth = C.getIntWidth(GetExprType(E)); |
11345 | IntRange L = GetExprRange(C, BO->getLHS(), opWidth, InConstantContext, |
11346 | Approximate); |
11347 | |
11348 | |
11349 | if (Optional<llvm::APSInt> divisor = |
11350 | BO->getRHS()->getIntegerConstantExpr(C)) { |
11351 | unsigned log2 = divisor->logBase2(); |
11352 | if (log2 >= L.Width) |
11353 | L.Width = (L.NonNegative ? 0 : 1); |
11354 | else |
11355 | L.Width = std::min(L.Width - log2, MaxWidth); |
11356 | return L; |
11357 | } |
11358 | |
11359 | |
11360 | |
11361 | |
11362 | IntRange R = GetExprRange(C, BO->getRHS(), opWidth, InConstantContext, |
11363 | Approximate); |
11364 | return IntRange(L.Width, L.NonNegative && R.NonNegative); |
11365 | } |
11366 | |
11367 | case BO_Rem: |
11368 | Combine = IntRange::rem; |
11369 | break; |
11370 | |
11371 | |
11372 | case BO_Xor: |
11373 | case BO_Or: |
11374 | break; |
11375 | } |
11376 | |
11377 | |
11378 | |
11379 | QualType T = GetExprType(E); |
11380 | unsigned opWidth = C.getIntWidth(T); |
11381 | IntRange L = |
11382 | GetExprRange(C, BO->getLHS(), opWidth, InConstantContext, Approximate); |
11383 | IntRange R = |
11384 | GetExprRange(C, BO->getRHS(), opWidth, InConstantContext, Approximate); |
11385 | IntRange C = Combine(L, R); |
11386 | C.NonNegative |= T->isUnsignedIntegerOrEnumerationType(); |
11387 | C.Width = std::min(C.Width, MaxWidth); |
11388 | return C; |
11389 | } |
11390 | |
11391 | if (const auto *UO = dyn_cast<UnaryOperator>(E)) { |
11392 | switch (UO->getOpcode()) { |
11393 | |
11394 | case UO_LNot: |
11395 | return IntRange::forBoolType(); |
11396 | |
11397 | |
11398 | case UO_Deref: |
11399 | case UO_AddrOf: |
11400 | return IntRange::forValueOfType(C, GetExprType(E)); |
11401 | |
11402 | default: |
11403 | return GetExprRange(C, UO->getSubExpr(), MaxWidth, InConstantContext, |
11404 | Approximate); |
11405 | } |
11406 | } |
11407 | |
11408 | if (const auto *OVE = dyn_cast<OpaqueValueExpr>(E)) |
11409 | return GetExprRange(C, OVE->getSourceExpr(), MaxWidth, InConstantContext, |
11410 | Approximate); |
11411 | |
11412 | if (const auto *BitField = E->getSourceBitField()) |
11413 | return IntRange(BitField->getBitWidthValue(C), |
11414 | BitField->getType()->isUnsignedIntegerOrEnumerationType()); |
11415 | |
11416 | return IntRange::forValueOfType(C, GetExprType(E)); |
11417 | } |
11418 | |
11419 | static IntRange GetExprRange(ASTContext &C, const Expr *E, |
11420 | bool InConstantContext, bool Approximate) { |
11421 | return GetExprRange(C, E, C.getIntWidth(GetExprType(E)), InConstantContext, |
11422 | Approximate); |
11423 | } |
11424 | |
11425 | |
11426 | |
11427 | |
11428 | static bool IsSameFloatAfterCast(const llvm::APFloat &value, |
11429 | const llvm::fltSemantics &Src, |
11430 | const llvm::fltSemantics &Tgt) { |
11431 | llvm::APFloat truncated = value; |
11432 | |
11433 | bool ignored; |
11434 | truncated.convert(Src, llvm::APFloat::rmNearestTiesToEven, &ignored); |
11435 | truncated.convert(Tgt, llvm::APFloat::rmNearestTiesToEven, &ignored); |
11436 | |
11437 | return truncated.bitwiseIsEqual(value); |
11438 | } |
11439 | |
11440 | |
11441 | |
11442 | |
11443 | |
11444 | |
11445 | static bool IsSameFloatAfterCast(const APValue &value, |
11446 | const llvm::fltSemantics &Src, |
11447 | const llvm::fltSemantics &Tgt) { |
11448 | if (value.isFloat()) |
11449 | return IsSameFloatAfterCast(value.getFloat(), Src, Tgt); |
11450 | |
11451 | if (value.isVector()) { |
11452 | for (unsigned i = 0, e = value.getVectorLength(); i != e; ++i) |
11453 | if (!IsSameFloatAfterCast(value.getVectorElt(i), Src, Tgt)) |
11454 | return false; |
11455 | return true; |
11456 | } |
11457 | |
11458 | assert(value.isComplexFloat()); |
11459 | return (IsSameFloatAfterCast(value.getComplexFloatReal(), Src, Tgt) && |
11460 | IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt)); |
11461 | } |
11462 | |
11463 | static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC, |
11464 | bool IsListInit = false); |
11465 | |
11466 | static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) { |
11467 | |
11468 | if (const DeclRefExpr *DR = |
11469 | dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts())) |
11470 | if (isa<EnumConstantDecl>(DR->getDecl())) |
11471 | return true; |
11472 | |
11473 | |
11474 | |
11475 | |
11476 | SourceLocation BeginLoc = E->getBeginLoc(); |
11477 | if (BeginLoc.isMacroID()) { |
11478 | StringRef MacroName = Lexer::getImmediateMacroName( |
11479 | BeginLoc, S.getSourceManager(), S.getLangOpts()); |
11480 | return MacroName != "YES" && MacroName != "NO" && |
11481 | MacroName != "true" && MacroName != "false"; |
11482 | } |
11483 | |
11484 | return false; |
11485 | } |
11486 | |
11487 | static bool isKnownToHaveUnsignedValue(Expr *E) { |
11488 | return E->getType()->isIntegerType() && |
11489 | (!E->getType()->isSignedIntegerType() || |
11490 | !E->IgnoreParenImpCasts()->getType()->isSignedIntegerType()); |
11491 | } |
11492 | |
11493 | namespace { |
11494 | |
11495 | |
11496 | |
11497 | |
11498 | |
11499 | |
11500 | |
11501 | |
11502 | |
11503 | |
11504 | struct PromotedRange { |
11505 | |
11506 | llvm::APSInt PromotedMin; |
11507 | |
11508 | llvm::APSInt PromotedMax; |
11509 | |
11510 | PromotedRange(IntRange R, unsigned BitWidth, bool Unsigned) { |
11511 | if (R.Width == 0) |
11512 | PromotedMin = PromotedMax = llvm::APSInt(BitWidth, Unsigned); |
11513 | else if (R.Width >= BitWidth && !Unsigned) { |
11514 | |
11515 | |
11516 | |
11517 | PromotedMin = llvm::APSInt::getMinValue(BitWidth, Unsigned); |
11518 | PromotedMax = llvm::APSInt::getMaxValue(BitWidth, Unsigned); |
11519 | } else { |
11520 | PromotedMin = llvm::APSInt::getMinValue(R.Width, R.NonNegative) |
11521 | .extOrTrunc(BitWidth); |
11522 | PromotedMin.setIsUnsigned(Unsigned); |
11523 | |
11524 | PromotedMax = llvm::APSInt::getMaxValue(R.Width, R.NonNegative) |
11525 | .extOrTrunc(BitWidth); |
11526 | PromotedMax.setIsUnsigned(Unsigned); |
11527 | } |
11528 | } |
11529 | |
11530 | |
11531 | bool isContiguous() const { return PromotedMin <= PromotedMax; } |
11532 | |
11533 | |
11534 | enum ComparisonResult { |
11535 | LT = 0x1, |
11536 | LE = 0x2, |
11537 | GT = 0x4, |
11538 | GE = 0x8, |
11539 | EQ = 0x10, |
11540 | NE = 0x20, |
11541 | InRangeFlag = 0x40, |
11542 | |
11543 | Less = LE | LT | NE, |
11544 | Min = LE | InRangeFlag, |
11545 | InRange = InRangeFlag, |
11546 | Max = GE | InRangeFlag, |
11547 | Greater = GE | GT | NE, |
11548 | |
11549 | OnlyValue = LE | GE | EQ | InRangeFlag, |
11550 | InHole = NE |
11551 | }; |
11552 | |
11553 | ComparisonResult compare(const llvm::APSInt &Value) const { |
11554 | assert(Value.getBitWidth() == PromotedMin.getBitWidth() && |
11555 | Value.isUnsigned() == PromotedMin.isUnsigned()); |
11556 | if (!isContiguous()) { |
11557 | assert(Value.isUnsigned() && "discontiguous range for signed compare"); |
11558 | if (Value.isMinValue()) return Min; |
11559 | if (Value.isMaxValue()) return Max; |
11560 | if (Value >= PromotedMin) return InRange; |
11561 | if (Value <= PromotedMax) return InRange; |
11562 | return InHole; |
11563 | } |
11564 | |
11565 | switch (llvm::APSInt::compareValues(Value, PromotedMin)) { |
11566 | case -1: return Less; |
11567 | case 0: return PromotedMin == PromotedMax ? OnlyValue : Min; |
11568 | case 1: |
11569 | switch (llvm::APSInt::compareValues(Value, PromotedMax)) { |
11570 | case -1: return InRange; |
11571 | case 0: return Max; |
11572 | case 1: return Greater; |
11573 | } |
11574 | } |
11575 | |
11576 | llvm_unreachable("impossible compare result"); |
11577 | } |
11578 | |
11579 | static llvm::Optional<StringRef> |
11580 | constantValue(BinaryOperatorKind Op, ComparisonResult R, bool ConstantOnRHS) { |
11581 | if (Op == BO_Cmp) { |
11582 | ComparisonResult LTFlag = LT, GTFlag = GT; |
11583 | if (ConstantOnRHS) std::swap(LTFlag, GTFlag); |
11584 | |
11585 | if (R & EQ) return StringRef("'std::strong_ordering::equal'"); |
11586 | if (R & LTFlag) return StringRef("'std::strong_ordering::less'"); |
11587 | if (R & GTFlag) return StringRef("'std::strong_ordering::greater'"); |
11588 | return llvm::None; |
11589 | } |
11590 | |
11591 | ComparisonResult TrueFlag, FalseFlag; |
11592 | if (Op == BO_EQ) { |
11593 | TrueFlag = EQ; |
11594 | FalseFlag = NE; |
11595 | } else if (Op == BO_NE) { |
11596 | TrueFlag = NE; |
11597 | FalseFlag = EQ; |
11598 | } else { |
11599 | if ((Op == BO_LT || Op == BO_GE) ^ ConstantOnRHS) { |
11600 | TrueFlag = LT; |
11601 | FalseFlag = GE; |
11602 | } else { |
11603 | TrueFlag = GT; |
11604 | FalseFlag = LE; |
11605 | } |
11606 | if (Op == BO_GE || Op == BO_LE) |
11607 | std::swap(TrueFlag, FalseFlag); |
11608 | } |
11609 | if (R & TrueFlag) |
11610 | return StringRef("true"); |
11611 | if (R & FalseFlag) |
11612 | return StringRef("false"); |
11613 | return llvm::None; |
11614 | } |
11615 | }; |
11616 | } |
11617 | |
11618 | static bool HasEnumType(Expr *E) { |
11619 | |
11620 | while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { |
11621 | if (ICE->getCastKind() != CK_IntegralCast && |
11622 | ICE->getCastKind() != CK_NoOp) |
11623 | break; |
11624 | E = ICE->getSubExpr(); |
11625 | } |
11626 | |
11627 | return E->getType()->isEnumeralType(); |
11628 | } |
11629 | |
11630 | static int classifyConstantValue(Expr *Constant) { |
11631 | |
11632 | |
11633 | enum ConstantValueKind { |
11634 | Miscellaneous = 0, |
11635 | LiteralTrue, |
11636 | LiteralFalse |
11637 | }; |
11638 | if (auto *BL = dyn_cast<CXXBoolLiteralExpr>(Constant)) |
11639 | return BL->getValue() ? ConstantValueKind::LiteralTrue |
11640 | : ConstantValueKind::LiteralFalse; |
11641 | return ConstantValueKind::Miscellaneous; |
11642 | } |
11643 | |
11644 | static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E, |
11645 | Expr *Constant, Expr *Other, |
11646 | const llvm::APSInt &Value, |
11647 | bool RhsConstant) { |
11648 | if (S.inTemplateInstantiation()) |
11649 | return false; |
11650 | |
11651 | Expr *OriginalOther = Other; |
11652 | |
11653 | Constant = Constant->IgnoreParenImpCasts(); |
11654 | Other = Other->IgnoreParenImpCasts(); |
11655 | |
11656 | |
11657 | |
11658 | |
11659 | |
11660 | |
11661 | |
11662 | |
11663 | if (Constant->getType()->isEnumeralType() && |
11664 | S.Context.hasSameUnqualifiedType(Constant->getType(), Other->getType())) |
11665 | return false; |
11666 | |
11667 | IntRange OtherValueRange = GetExprRange( |
11668 | S.Context, Other, S.isConstantEvaluated(), false); |
11669 | |
11670 | QualType OtherT = Other->getType(); |
11671 | if (const auto *AT = OtherT->getAs<AtomicType>()) |
11672 | OtherT = AT->getValueType(); |
11673 | IntRange OtherTypeRange = IntRange::forValueOfType(S.Context, OtherT); |
11674 | |
11675 | |
11676 | |
11677 | bool IsObjCSignedCharBool = S.getLangOpts().ObjC && |
11678 | S.NSAPIObj->isObjCBOOLType(OtherT) && |
11679 | OtherT->isSpecificBuiltinType(BuiltinType::SChar); |
11680 | |
11681 | |
11682 | |
11683 | bool OtherIsBooleanDespiteType = |
11684 | !OtherT->isBooleanType() && Other->isKnownToHaveBooleanValue(); |
11685 | if (OtherIsBooleanDespiteType || IsObjCSignedCharBool) |
11686 | OtherTypeRange = OtherValueRange = IntRange::forBoolType(); |
11687 | |
11688 | |
11689 | |
11690 | PromotedRange OtherPromotedValueRange(OtherValueRange, Value.getBitWidth(), |
11691 | Value.isUnsigned()); |
11692 | auto Cmp = OtherPromotedValueRange.compare(Value); |
11693 | auto Result = PromotedRange::constantValue(E->getOpcode(), Cmp, RhsConstant); |
11694 | if (!Result) |
11695 | return false; |
11696 | |
11697 | |
11698 | |
11699 | bool TautologicalTypeCompare = false; |
11700 | { |
11701 | PromotedRange OtherPromotedTypeRange(OtherTypeRange, Value.getBitWidth(), |
11702 | Value.isUnsigned()); |
11703 | auto TypeCmp = OtherPromotedTypeRange.compare(Value); |
11704 | if (auto TypeResult = PromotedRange::constantValue(E->getOpcode(), TypeCmp, |
11705 | RhsConstant)) { |
11706 | TautologicalTypeCompare = true; |
11707 | Cmp = TypeCmp; |
11708 | Result = TypeResult; |
11709 | } |
11710 | } |
11711 | |
11712 | |
11713 | |
11714 | if (!TautologicalTypeCompare && OtherValueRange.Width == 0) |
11715 | return false; |
11716 | |
11717 | |
11718 | |
11719 | |
11720 | |
11721 | |
11722 | |
11723 | bool InRange = Cmp & PromotedRange::InRangeFlag; |
11724 | if (InRange && IsEnumConstOrFromMacro(S, Constant)) |
11725 | return false; |
11726 | |
11727 | |
11728 | |
11729 | if (Other->refersToBitField() && InRange && Value == 0 && |
11730 | Other->getType()->isUnsignedIntegerOrEnumerationType()) |
11731 | TautologicalTypeCompare = true; |
11732 | |
11733 | |
11734 | |
11735 | const EnumConstantDecl *ED = nullptr; |
11736 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Constant)) |
11737 | ED = dyn_cast<EnumConstantDecl>(DR->getDecl()); |
11738 | |
11739 | |
11740 | SmallString<64> PrettySourceValue; |
11741 | llvm::raw_svector_ostream OS(PrettySourceValue); |
11742 | if (ED) { |
11743 | OS << '\'' << *ED << "' (" << Value << ")"; |
11744 | } else if (auto *BL = dyn_cast<ObjCBoolLiteralExpr>( |
11745 | Constant->IgnoreParenImpCasts())) { |
11746 | OS << (BL->getValue() ? "YES" : "NO"); |
11747 | } else { |
11748 | OS << Value; |
11749 | } |
11750 | |
11751 | if (!TautologicalTypeCompare) { |
11752 | S.Diag(E->getOperatorLoc(), diag::warn_tautological_compare_value_range) |
11753 | << RhsConstant << OtherValueRange.Width << OtherValueRange.NonNegative |
11754 | << E->getOpcodeStr() << OS.str() << *Result |
11755 | << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); |
11756 | return true; |
11757 | } |
11758 | |
11759 | if (IsObjCSignedCharBool) { |
11760 | S.DiagRuntimeBehavior(E->getOperatorLoc(), E, |
11761 | S.PDiag(diag::warn_tautological_compare_objc_bool) |
11762 | << OS.str() << *Result); |
11763 | return true; |
11764 | } |
11765 | |
11766 | |
11767 | |
11768 | |
11769 | if (!InRange || Other->isKnownToHaveBooleanValue()) { |
11770 | |
11771 | S.DiagRuntimeBehavior( |
11772 | E->getOperatorLoc(), E, |
11773 | S.PDiag(!InRange ? diag::warn_out_of_range_compare |
11774 | : diag::warn_tautological_bool_compare) |
11775 | << OS.str() << classifyConstantValue(Constant) << OtherT |
11776 | << OtherIsBooleanDespiteType << *Result |
11777 | << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); |
11778 | } else { |
11779 | bool IsCharTy = OtherT.withoutLocalFastQualifiers() == S.Context.CharTy; |
11780 | unsigned Diag = |
11781 | (isKnownToHaveUnsignedValue(OriginalOther) && Value == 0) |
11782 | ? (HasEnumType(OriginalOther) |
11783 | ? diag::warn_unsigned_enum_always_true_comparison |
11784 | : IsCharTy ? diag::warn_unsigned_char_always_true_comparison |
11785 | : diag::warn_unsigned_always_true_comparison) |
11786 | : diag::warn_tautological_constant_compare; |
11787 | |
11788 | S.Diag(E->getOperatorLoc(), Diag) |
11789 | << RhsConstant << OtherT << E->getOpcodeStr() << OS.str() << *Result |
11790 | << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); |
11791 | } |
11792 | |
11793 | return true; |
11794 | } |
11795 | |
11796 | |
11797 | |
11798 | static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { |
11799 | AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); |
11800 | AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); |
11801 | } |
11802 | |
11803 | |
11804 | |
11805 | |
11806 | static void AnalyzeComparison(Sema &S, BinaryOperator *E) { |
11807 | |
11808 | QualType T = E->getLHS()->getType(); |
11809 | |
11810 | |
11811 | |
11812 | if (!S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType())) |
11813 | return AnalyzeImpConvsInComparison(S, E); |
11814 | |
11815 | |
11816 | if (E->isValueDependent()) |
11817 | return AnalyzeImpConvsInComparison(S, E); |
11818 | |
11819 | Expr *LHS = E->getLHS(); |
11820 | Expr *RHS = E->getRHS(); |
11821 | |
11822 | if (T->isIntegralType(S.Context)) { |
11823 | Optional<llvm::APSInt> RHSValue = RHS->getIntegerConstantExpr(S.Context); |
11824 | Optional<llvm::APSInt> LHSValue = LHS->getIntegerConstantExpr(S.Context); |
11825 | |
11826 | |
11827 | if (RHSValue && LHSValue) |
11828 | return AnalyzeImpConvsInComparison(S, E); |
11829 | |
11830 | |
11831 | if ((bool)RHSValue ^ (bool)LHSValue) { |
11832 | |
11833 | const bool RhsConstant = (bool)RHSValue; |
11834 | Expr *Const = RhsConstant ? RHS : LHS; |
11835 | Expr *Other = RhsConstant ? LHS : RHS; |
11836 | const llvm::APSInt &Value = RhsConstant ? *RHSValue : *LHSValue; |
11837 | |
11838 | |
11839 | |
11840 | if (CheckTautologicalComparison(S, E, Const, Other, Value, RhsConstant)) |
11841 | return AnalyzeImpConvsInComparison(S, E); |
11842 | } |
11843 | } |
11844 | |
11845 | if (!T->hasUnsignedIntegerRepresentation()) { |
11846 | |
11847 | |
11848 | |
11849 | return AnalyzeImpConvsInComparison(S, E); |
11850 | } |
11851 | |
11852 | LHS = LHS->IgnoreParenImpCasts(); |
11853 | RHS = RHS->IgnoreParenImpCasts(); |
11854 | |
11855 | if (!S.getLangOpts().CPlusPlus) { |
11856 | |
11857 | |
11858 | |
11859 | if (const auto *TET = dyn_cast<TypeOfExprType>(LHS->getType())) |
11860 | LHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); |
11861 | if (const auto *TET = dyn_cast<TypeOfExprType>(RHS->getType())) |
11862 | RHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); |
11863 | } |
11864 | |
11865 | |
11866 | |
11867 | Expr *signedOperand, *unsignedOperand; |
11868 | if (LHS->getType()->hasSignedIntegerRepresentation()) { |
11869 | assert(!RHS->getType()->hasSignedIntegerRepresentation() && |
11870 | "unsigned comparison between two signed integer expressions?"); |
11871 | signedOperand = LHS; |
11872 | unsignedOperand = RHS; |
11873 | } else if (RHS->getType()->hasSignedIntegerRepresentation()) { |
11874 | signedOperand = RHS; |
11875 | unsignedOperand = LHS; |
11876 | } else { |
11877 | return AnalyzeImpConvsInComparison(S, E); |
11878 | } |
11879 | |
11880 | |
11881 | IntRange signedRange = GetExprRange( |
11882 | S.Context, signedOperand, S.isConstantEvaluated(), true); |
11883 | |
11884 | |
11885 | |
11886 | AnalyzeImplicitConversions(S, LHS, E->getOperatorLoc()); |
11887 | AnalyzeImplicitConversions(S, RHS, E->getOperatorLoc()); |
11888 | |
11889 | |
11890 | if (signedRange.NonNegative) |
11891 | return; |
11892 | |
11893 | |
11894 | |
11895 | |
11896 | |
11897 | if (E->isEqualityOp()) { |
11898 | unsigned comparisonWidth = S.Context.getIntWidth(T); |
11899 | IntRange unsignedRange = |
11900 | GetExprRange(S.Context, unsignedOperand, S.isConstantEvaluated(), |
11901 | true); |
11902 | |
11903 | |
11904 | |
11905 | assert(unsignedRange.NonNegative && "unsigned range includes negative?"); |
11906 | |
11907 | if (unsignedRange.Width < comparisonWidth) |
11908 | return; |
11909 | } |
11910 | |
11911 | S.DiagRuntimeBehavior(E->getOperatorLoc(), E, |
11912 | S.PDiag(diag::warn_mixed_sign_comparison) |
11913 | << LHS->getType() << RHS->getType() |
11914 | << LHS->getSourceRange() << RHS->getSourceRange()); |
11915 | } |
11916 | |
11917 | |
11918 | |
11919 | |
11920 | static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, |
11921 | SourceLocation InitLoc) { |
11922 | assert(Bitfield->isBitField()); |
11923 | if (Bitfield->isInvalidDecl()) |
11924 | return false; |
11925 | |
11926 | |
11927 | QualType BitfieldType = Bitfield->getType(); |
11928 | if (BitfieldType->isBooleanType()) |
11929 | return false; |
11930 | |
11931 | if (BitfieldType->isEnumeralType()) { |
11932 | EnumDecl *BitfieldEnumDecl = BitfieldType->castAs<EnumType>()->getDecl(); |
11933 | |
11934 | |
11935 | |
11936 | if (S.getLangOpts().CPlusPlus11 && |
11937 | !BitfieldEnumDecl->getIntegerTypeSourceInfo() && |
11938 | BitfieldEnumDecl->getNumPositiveBits() > 0 && |
11939 | BitfieldEnumDecl->getNumNegativeBits() == 0) { |
11940 | S.Diag(InitLoc, diag::warn_no_underlying_type_specified_for_enum_bitfield) |
11941 | << BitfieldEnumDecl; |
11942 | } |
11943 | } |
11944 | |
11945 | if (Bitfield->getType()->isBooleanType()) |
11946 | return false; |
11947 | |
11948 | |
11949 | if (Bitfield->getBitWidth()->isValueDependent() || |
11950 | Bitfield->getBitWidth()->isTypeDependent() || |
11951 | Init->isValueDependent() || |
11952 | Init->isTypeDependent()) |
11953 | return false; |
11954 | |
11955 | Expr *OriginalInit = Init->IgnoreParenImpCasts(); |
11956 | unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context); |
11957 | |
11958 | Expr::EvalResult Result; |
11959 | if (!OriginalInit->EvaluateAsInt(Result, S.Context, |
11960 | Expr::SE_AllowSideEffects)) { |
11961 | |
11962 | |
11963 | |
11964 | if (const auto *EnumTy = OriginalInit->getType()->getAs<EnumType>()) { |
11965 | EnumDecl *ED = EnumTy->getDecl(); |
11966 | bool SignedBitfield = BitfieldType->isSignedIntegerType(); |
11967 | |
11968 | |
11969 | |
11970 | |
11971 | bool SignedEnum = ED->getNumNegativeBits() > 0; |
11972 | |
11973 | |
11974 | |
11975 | |
11976 | |
11977 | |
11978 | unsigned DiagID = 0; |
11979 | if (SignedEnum && !SignedBitfield) { |
11980 | DiagID = diag::warn_unsigned_bitfield_assigned_signed_enum; |
11981 | } else if (SignedBitfield && !SignedEnum && |
11982 | ED->getNumPositiveBits() == FieldWidth) { |
11983 | DiagID = diag::warn_signed_bitfield_enum_conversion; |
11984 | } |
11985 | |
11986 | if (DiagID) { |
11987 | S.Diag(InitLoc, DiagID) << Bitfield << ED; |
11988 | TypeSourceInfo *TSI = Bitfield->getTypeSourceInfo(); |
11989 | SourceRange TypeRange = |
11990 | TSI ? TSI->getTypeLoc().getSourceRange() : SourceRange(); |
11991 | S.Diag(Bitfield->getTypeSpecStartLoc(), diag::note_change_bitfield_sign) |
11992 | << SignedEnum << TypeRange; |
11993 | } |
11994 | |
11995 | |
11996 | |
11997 | |
11998 | unsigned BitsNeeded = SignedEnum ? std::max(ED->getNumPositiveBits() + 1, |
11999 | ED->getNumNegativeBits()) |
12000 | : ED->getNumPositiveBits(); |
12001 | |
12002 | |
12003 | if (BitsNeeded > FieldWidth) { |
12004 | Expr *WidthExpr = Bitfield->getBitWidth(); |
12005 | S.Diag(InitLoc, diag::warn_bitfield_too_small_for_enum) |
12006 | << Bitfield << ED; |
12007 | S.Diag(WidthExpr->getExprLoc(), diag::note_widen_bitfield) |
12008 | << BitsNeeded << ED << WidthExpr->getSourceRange(); |
12009 | } |
12010 | } |
12011 | |
12012 | return false; |
12013 | } |
12014 | |
12015 | llvm::APSInt Value = Result.Val.getInt(); |
12016 | |
12017 | unsigned OriginalWidth = Value.getBitWidth(); |
12018 | |
12019 | if (!Value.isSigned() || Value.isNegative()) |
12020 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(OriginalInit)) |
12021 | if (UO->getOpcode() == UO_Minus || UO->getOpcode() == UO_Not) |
12022 | OriginalWidth = Value.getMinSignedBits(); |
12023 | |
12024 | if (OriginalWidth <= FieldWidth) |
12025 | return false; |
12026 | |
12027 | |
12028 | llvm::APSInt TruncatedValue = Value.trunc(FieldWidth); |
12029 | TruncatedValue.setIsSigned(BitfieldType->isSignedIntegerType()); |
12030 | |
12031 | |
12032 | TruncatedValue = TruncatedValue.extend(OriginalWidth); |
12033 | if (llvm::APSInt::isSameValue(Value, TruncatedValue)) |
12034 | return false; |
12035 | |
12036 | |
12037 | |
12038 | if (FieldWidth == 1 && Value == 1) |
12039 | return false; |
12040 | |
12041 | std::string PrettyValue = toString(Value, 10); |
12042 | std::string PrettyTrunc = toString(TruncatedValue, 10); |
12043 | |
12044 | S.Diag(InitLoc, diag::warn_impcast_bitfield_precision_constant) |
12045 | << PrettyValue << PrettyTrunc << OriginalInit->getType() |
12046 | << Init->getSourceRange(); |
12047 | |
12048 | return true; |
12049 | } |
12050 | |
12051 | |
12052 | |
12053 | static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { |
12054 | |
12055 | AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); |
12056 | |
12057 | |
12058 | |
12059 | if (FieldDecl *Bitfield = E->getLHS()->getSourceBitField()) { |
12060 | if (AnalyzeBitFieldAssignment(S, Bitfield, E->getRHS(), |
12061 | E->getOperatorLoc())) { |
12062 | |
12063 | return AnalyzeImplicitConversions(S, E->getRHS()->IgnoreParenImpCasts(), |
12064 | E->getOperatorLoc()); |
12065 | } |
12066 | } |
12067 | |
12068 | AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); |
12069 | |
12070 | |
12071 | if (E->getLHS()->getType()->isAtomicType()) |
12072 | S.Diag(E->getRHS()->getBeginLoc(), diag::warn_atomic_implicit_seq_cst); |
12073 | } |
12074 | |
12075 | |
12076 | static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, |
12077 | SourceLocation CContext, unsigned diag, |
12078 | bool pruneControlFlow = false) { |
12079 | if (pruneControlFlow) { |
12080 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12081 | S.PDiag(diag) |
12082 | << SourceType << T << E->getSourceRange() |
12083 | << SourceRange(CContext)); |
12084 | return; |
12085 | } |
12086 | S.Diag(E->getExprLoc(), diag) |
12087 | << SourceType << T << E->getSourceRange() << SourceRange(CContext); |
12088 | } |
12089 | |
12090 | |
12091 | static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, |
12092 | SourceLocation CContext, |
12093 | unsigned diag, bool pruneControlFlow = false) { |
12094 | DiagnoseImpCast(S, E, E->getType(), T, CContext, diag, pruneControlFlow); |
12095 | } |
12096 | |
12097 | static bool isObjCSignedCharBool(Sema &S, QualType Ty) { |
12098 | return Ty->isSpecificBuiltinType(BuiltinType::SChar) && |
12099 | S.getLangOpts().ObjC && S.NSAPIObj->isObjCBOOLType(Ty); |
12100 | } |
12101 | |
12102 | static void adornObjCBoolConversionDiagWithTernaryFixit( |
12103 | Sema &S, Expr *SourceExpr, const Sema::SemaDiagnosticBuilder &Builder) { |
12104 | Expr *Ignored = SourceExpr->IgnoreImplicit(); |
12105 | if (const auto *OVE = dyn_cast<OpaqueValueExpr>(Ignored)) |
12106 | Ignored = OVE->getSourceExpr(); |
12107 | bool NeedsParens = isa<AbstractConditionalOperator>(Ignored) || |
12108 | isa<BinaryOperator>(Ignored) || |
12109 | isa<CXXOperatorCallExpr>(Ignored); |
12110 | SourceLocation EndLoc = S.getLocForEndOfToken(SourceExpr->getEndLoc()); |
12111 | if (NeedsParens) |
12112 | Builder << FixItHint::CreateInsertion(SourceExpr->getBeginLoc(), "(") |
12113 | << FixItHint::CreateInsertion(EndLoc, ")"); |
12114 | Builder << FixItHint::CreateInsertion(EndLoc, " ? YES : NO"); |
12115 | } |
12116 | |
12117 | |
12118 | static void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, |
12119 | SourceLocation CContext) { |
12120 | const bool IsBool = T->isSpecificBuiltinType(BuiltinType::Bool); |
12121 | const bool PruneWarnings = S.inTemplateInstantiation(); |
12122 | |
12123 | Expr *InnerE = E->IgnoreParenImpCasts(); |
12124 | |
12125 | if (UnaryOperator *UOp = dyn_cast<UnaryOperator>(InnerE)) |
12126 | if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) |
12127 | InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); |
12128 | |
12129 | const bool IsLiteral = |
12130 | isa<FloatingLiteral>(E) || isa<FloatingLiteral>(InnerE); |
12131 | |
12132 | llvm::APFloat Value(0.0); |
12133 | bool IsConstant = |
12134 | E->EvaluateAsFloat(Value, S.Context, Expr::SE_AllowSideEffects); |
12135 | if (!IsConstant) { |
12136 | if (isObjCSignedCharBool(S, T)) { |
12137 | return adornObjCBoolConversionDiagWithTernaryFixit( |
12138 | S, E, |
12139 | S.Diag(CContext, diag::warn_impcast_float_to_objc_signed_char_bool) |
12140 | << E->getType()); |
12141 | } |
12142 | |
12143 | return DiagnoseImpCast(S, E, T, CContext, |
12144 | diag::warn_impcast_float_integer, PruneWarnings); |
12145 | } |
12146 | |
12147 | bool isExact = false; |
12148 | |
12149 | llvm::APSInt IntegerValue(S.Context.getIntWidth(T), |
12150 | T->hasUnsignedIntegerRepresentation()); |
12151 | llvm::APFloat::opStatus Result = Value.convertToInteger( |
12152 | IntegerValue, llvm::APFloat::rmTowardZero, &isExact); |
12153 | |
12154 | |
12155 | |
12156 | |
12157 | |
12158 | |
12159 | SmallString<16> PrettySourceValue; |
12160 | unsigned precision = llvm::APFloat::semanticsPrecision(Value.getSemantics()); |
12161 | precision = (precision * 59 + 195) / 196; |
12162 | Value.toString(PrettySourceValue, precision); |
12163 | |
12164 | if (isObjCSignedCharBool(S, T) && IntegerValue != 0 && IntegerValue != 1) { |
12165 | return adornObjCBoolConversionDiagWithTernaryFixit( |
12166 | S, E, |
12167 | S.Diag(CContext, diag::warn_impcast_constant_value_to_objc_bool) |
12168 | << PrettySourceValue); |
12169 | } |
12170 | |
12171 | if (Result == llvm::APFloat::opOK && isExact) { |
12172 | if (IsLiteral) return; |
12173 | return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, |
12174 | PruneWarnings); |
12175 | } |
12176 | |
12177 | |
12178 | |
12179 | if (!IsBool && Result == llvm::APFloat::opInvalidOp) |
12180 | return DiagnoseImpCast( |
12181 | S, E, T, CContext, |
12182 | IsLiteral ? diag::warn_impcast_literal_float_to_integer_out_of_range |
12183 | : diag::warn_impcast_float_to_integer_out_of_range, |
12184 | PruneWarnings); |
12185 | |
12186 | unsigned DiagID = 0; |
12187 | if (IsLiteral) { |
12188 | |
12189 | DiagID = diag::warn_impcast_literal_float_to_integer; |
12190 | } else if (IntegerValue == 0) { |
12191 | if (Value.isZero()) { |
12192 | return DiagnoseImpCast(S, E, T, CContext, |
12193 | diag::warn_impcast_float_integer, PruneWarnings); |
12194 | } |
12195 | |
12196 | DiagID = diag::warn_impcast_float_to_integer_zero; |
12197 | } else { |
12198 | if (IntegerValue.isUnsigned()) { |
12199 | if (!IntegerValue.isMaxValue()) { |
12200 | return DiagnoseImpCast(S, E, T, CContext, |
12201 | diag::warn_impcast_float_integer, PruneWarnings); |
12202 | } |
12203 | } else { |
12204 | if (!IntegerValue.isMaxSignedValue() && |
12205 | !IntegerValue.isMinSignedValue()) { |
12206 | return DiagnoseImpCast(S, E, T, CContext, |
12207 | diag::warn_impcast_float_integer, PruneWarnings); |
12208 | } |
12209 | } |
12210 | |
12211 | DiagID = diag::warn_impcast_float_to_integer; |
12212 | } |
12213 | |
12214 | SmallString<16> PrettyTargetValue; |
12215 | if (IsBool) |
12216 | PrettyTargetValue = Value.isZero() ? "false" : "true"; |
12217 | else |
12218 | IntegerValue.toString(PrettyTargetValue); |
12219 | |
12220 | if (PruneWarnings) { |
12221 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12222 | S.PDiag(DiagID) |
12223 | << E->getType() << T.getUnqualifiedType() |
12224 | << PrettySourceValue << PrettyTargetValue |
12225 | << E->getSourceRange() << SourceRange(CContext)); |
12226 | } else { |
12227 | S.Diag(E->getExprLoc(), DiagID) |
12228 | << E->getType() << T.getUnqualifiedType() << PrettySourceValue |
12229 | << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext); |
12230 | } |
12231 | } |
12232 | |
12233 | |
12234 | |
12235 | static void AnalyzeCompoundAssignment(Sema &S, BinaryOperator *E) { |
12236 | assert(isa<CompoundAssignOperator>(E) && |
12237 | "Must be compound assignment operation"); |
12238 | |
12239 | AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); |
12240 | AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); |
12241 | |
12242 | if (E->getLHS()->getType()->isAtomicType()) |
12243 | S.Diag(E->getOperatorLoc(), diag::warn_atomic_implicit_seq_cst); |
12244 | |
12245 | |
12246 | const auto *ResultBT = E->getLHS()->getType()->getAs<BuiltinType>(); |
12247 | const auto *RBT = cast<CompoundAssignOperator>(E) |
12248 | ->getComputationResultType() |
12249 | ->getAs<BuiltinType>(); |
12250 | |
12251 | |
12252 | if (!ResultBT || !RBT || !RBT->isFloatingPoint()) return; |
12253 | |
12254 | |
12255 | if (ResultBT->isInteger()) |
12256 | return DiagnoseImpCast(S, E, E->getRHS()->getType(), E->getLHS()->getType(), |
12257 | E->getExprLoc(), diag::warn_impcast_float_integer); |
12258 | |
12259 | if (!ResultBT->isFloatingPoint()) |
12260 | return; |
12261 | |
12262 | |
12263 | int Order = S.getASTContext().getFloatingTypeSemanticOrder( |
12264 | QualType(ResultBT, 0), QualType(RBT, 0)); |
12265 | if (Order < 0 && !S.SourceMgr.isInSystemMacro(E->getOperatorLoc())) |
12266 | |
12267 | DiagnoseImpCast(S, E->getRHS(), E->getLHS()->getType(), E->getOperatorLoc(), |
12268 | diag::warn_impcast_float_result_precision); |
12269 | } |
12270 | |
12271 | static std::string PrettyPrintInRange(const llvm::APSInt &Value, |
12272 | IntRange Range) { |
12273 | if (!Range.Width) return "0"; |
12274 | |
12275 | llvm::APSInt ValueInRange = Value; |
12276 | ValueInRange.setIsSigned(!Range.NonNegative); |
12277 | ValueInRange = ValueInRange.trunc(Range.Width); |
12278 | return toString(ValueInRange, 10); |
12279 | } |
12280 | |
12281 | static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { |
12282 | if (!isa<ImplicitCastExpr>(Ex)) |
12283 | return false; |
12284 | |
12285 | Expr *InnerE = Ex->IgnoreParenImpCasts(); |
12286 | const Type *Target = S.Context.getCanonicalType(Ex->getType()).getTypePtr(); |
12287 | const Type *Source = |
12288 | S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); |
12289 | if (Target->isDependentType()) |
12290 | return false; |
12291 | |
12292 | const BuiltinType *FloatCandidateBT = |
12293 | dyn_cast<BuiltinType>(ToBool ? Source : Target); |
12294 | const Type *BoolCandidateType = ToBool ? Target : Source; |
12295 | |
12296 | return (BoolCandidateType->isSpecificBuiltinType(BuiltinType::Bool) && |
12297 | FloatCandidateBT && (FloatCandidateBT->isFloatingPoint())); |
12298 | } |
12299 | |
12300 | static void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, |
12301 | SourceLocation CC) { |
12302 | unsigned NumArgs = TheCall->getNumArgs(); |
12303 | for (unsigned i = 0; i < NumArgs; ++i) { |
12304 | Expr *CurrA = TheCall->getArg(i); |
12305 | if (!IsImplicitBoolFloatConversion(S, CurrA, true)) |
12306 | continue; |
12307 | |
12308 | bool IsSwapped = ((i > 0) && |
12309 | IsImplicitBoolFloatConversion(S, TheCall->getArg(i - 1), false)); |
12310 | IsSwapped |= ((i < (NumArgs - 1)) && |
12311 | IsImplicitBoolFloatConversion(S, TheCall->getArg(i + 1), false)); |
12312 | if (IsSwapped) { |
12313 | |
12314 | DiagnoseImpCast(S, CurrA->IgnoreParenImpCasts(), |
12315 | CurrA->getType(), CC, |
12316 | diag::warn_impcast_floating_point_to_bool); |
12317 | } |
12318 | } |
12319 | } |
12320 | |
12321 | static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, |
12322 | SourceLocation CC) { |
12323 | if (S.Diags.isIgnored(diag::warn_impcast_null_pointer_to_integer, |
12324 | E->getExprLoc())) |
12325 | return; |
12326 | |
12327 | |
12328 | if (isa<CallExpr>(E)) |
12329 | return; |
12330 | |
12331 | |
12332 | const Expr::NullPointerConstantKind NullKind = |
12333 | E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull); |
12334 | if (NullKind != Expr::NPCK_GNUNull && NullKind != Expr::NPCK_CXX11_nullptr) |
12335 | return; |
12336 | |
12337 | |
12338 | if (T->isAnyPointerType() || T->isBlockPointerType() || |
12339 | T->isMemberPointerType() || !T->isScalarType() || T->isNullPtrType()) |
12340 | return; |
12341 | |
12342 | SourceLocation Loc = E->getSourceRange().getBegin(); |
12343 | |
12344 | |
12345 | |
12346 | |
12347 | Loc = S.SourceMgr.getTopMacroCallerLoc(Loc); |
12348 | CC = S.SourceMgr.getTopMacroCallerLoc(CC); |
12349 | |
12350 | |
12351 | if (NullKind == Expr::NPCK_GNUNull && Loc.isMacroID()) { |
12352 | StringRef MacroName = Lexer::getImmediateMacroNameForDiagnostics( |
12353 | Loc, S.SourceMgr, S.getLangOpts()); |
12354 | if (MacroName == "NULL") |
12355 | Loc = S.SourceMgr.getImmediateExpansionRange(Loc).getBegin(); |
12356 | } |
12357 | |
12358 | |
12359 | if (S.SourceMgr.getFileID(Loc) != S.SourceMgr.getFileID(CC)) |
12360 | return; |
12361 | |
12362 | S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) |
12363 | << (NullKind == Expr::NPCK_CXX11_nullptr) << T << SourceRange(CC) |
12364 | << FixItHint::CreateReplacement(Loc, |
12365 | S.getFixItZeroLiteralForType(T, Loc)); |
12366 | } |
12367 | |
12368 | static void checkObjCArrayLiteral(Sema &S, QualType TargetType, |
12369 | ObjCArrayLiteral *ArrayLiteral); |
12370 | |
12371 | static void |
12372 | checkObjCDictionaryLiteral(Sema &S, QualType TargetType, |
12373 | ObjCDictionaryLiteral *DictionaryLiteral); |
12374 | |
12375 | |
12376 | |
12377 | static void checkObjCCollectionLiteralElement(Sema &S, |
12378 | QualType TargetElementType, |
12379 | Expr *Element, |
12380 | unsigned ElementKind) { |
12381 | |
12382 | if (auto ICE = dyn_cast<ImplicitCastExpr>(Element)) { |
12383 | if (ICE->getCastKind() == CK_BitCast && |
12384 | ICE->getSubExpr()->getType()->getAs<ObjCObjectPointerType>()) |
12385 | Element = ICE->getSubExpr(); |
12386 | } |
12387 | |
12388 | QualType ElementType = Element->getType(); |
12389 | ExprResult ElementResult(Element); |
12390 | if (ElementType->getAs<ObjCObjectPointerType>() && |
12391 | S.CheckSingleAssignmentConstraints(TargetElementType, |
12392 | ElementResult, |
12393 | false, false) |
12394 | != Sema::Compatible) { |
12395 | S.Diag(Element->getBeginLoc(), diag::warn_objc_collection_literal_element) |
12396 | << ElementType << ElementKind << TargetElementType |
12397 | << Element->getSourceRange(); |
12398 | } |
12399 | |
12400 | if (auto ArrayLiteral = dyn_cast<ObjCArrayLiteral>(Element)) |
12401 | checkObjCArrayLiteral(S, TargetElementType, ArrayLiteral); |
12402 | else if (auto DictionaryLiteral = dyn_cast<ObjCDictionaryLiteral>(Element)) |
12403 | checkObjCDictionaryLiteral(S, TargetElementType, DictionaryLiteral); |
12404 | } |
12405 | |
12406 | |
12407 | |
12408 | static void checkObjCArrayLiteral(Sema &S, QualType TargetType, |
12409 | ObjCArrayLiteral *ArrayLiteral) { |
12410 | if (!S.NSArrayDecl) |
12411 | return; |
12412 | |
12413 | const auto *TargetObjCPtr = TargetType->getAs<ObjCObjectPointerType>(); |
12414 | if (!TargetObjCPtr) |
12415 | return; |
12416 | |
12417 | if (TargetObjCPtr->isUnspecialized() || |
12418 | TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl() |
12419 | != S.NSArrayDecl->getCanonicalDecl()) |
12420 | return; |
12421 | |
12422 | auto TypeArgs = TargetObjCPtr->getTypeArgs(); |
12423 | if (TypeArgs.size() != 1) |
12424 | return; |
12425 | |
12426 | QualType TargetElementType = TypeArgs[0]; |
12427 | for (unsigned I = 0, N = ArrayLiteral->getNumElements(); I != N; ++I) { |
12428 | checkObjCCollectionLiteralElement(S, TargetElementType, |
12429 | ArrayLiteral->getElement(I), |
12430 | 0); |
12431 | } |
12432 | } |
12433 | |
12434 | |
12435 | |
12436 | static void |
12437 | checkObjCDictionaryLiteral(Sema &S, QualType TargetType, |
12438 | ObjCDictionaryLiteral *DictionaryLiteral) { |
12439 | if (!S.NSDictionaryDecl) |
12440 | return; |
12441 | |
12442 | const auto *TargetObjCPtr = TargetType->getAs<ObjCObjectPointerType>(); |
12443 | if (!TargetObjCPtr) |
12444 | return; |
12445 | |
12446 | if (TargetObjCPtr->isUnspecialized() || |
12447 | TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl() |
12448 | != S.NSDictionaryDecl->getCanonicalDecl()) |
12449 | return; |
12450 | |
12451 | auto TypeArgs = TargetObjCPtr->getTypeArgs(); |
12452 | if (TypeArgs.size() != 2) |
12453 | return; |
12454 | |
12455 | QualType TargetKeyType = TypeArgs[0]; |
12456 | QualType TargetObjectType = TypeArgs[1]; |
12457 | for (unsigned I = 0, N = DictionaryLiteral->getNumElements(); I != N; ++I) { |
12458 | auto Element = DictionaryLiteral->getKeyValueElement(I); |
12459 | checkObjCCollectionLiteralElement(S, TargetKeyType, Element.Key, 1); |
12460 | checkObjCCollectionLiteralElement(S, TargetObjectType, Element.Value, 2); |
12461 | } |
12462 | } |
12463 | |
12464 | |
12465 | |
12466 | static bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, |
12467 | SourceLocation CC) { |
12468 | |
12469 | |
12470 | |
12471 | if (auto *IntLit = dyn_cast<IntegerLiteral>(E->IgnoreParenImpCasts())) { |
12472 | const char FirstLiteralCharacter = |
12473 | S.getSourceManager().getCharacterData(IntLit->getBeginLoc())[0]; |
12474 | if (FirstLiteralCharacter == '0') |
12475 | return false; |
12476 | } |
12477 | |
12478 | |
12479 | |
12480 | if (CC.isValid() && T->isCharType()) { |
12481 | const char FirstContextCharacter = |
12482 | S.getSourceManager().getCharacterData(CC)[0]; |
12483 | if (FirstContextCharacter == '{') |
12484 | return false; |
12485 | } |
12486 | |
12487 | return true; |
12488 | } |
12489 | |
12490 | static const IntegerLiteral *getIntegerLiteral(Expr *E) { |
12491 | const auto *IL = dyn_cast<IntegerLiteral>(E); |
12492 | if (!IL) { |
12493 | if (auto *UO = dyn_cast<UnaryOperator>(E)) { |
12494 | if (UO->getOpcode() == UO_Minus) |
12495 | return dyn_cast<IntegerLiteral>(UO->getSubExpr()); |
12496 | } |
12497 | } |
12498 | |
12499 | return IL; |
12500 | } |
12501 | |
12502 | static void DiagnoseIntInBoolContext(Sema &S, Expr *E) { |
12503 | E = E->IgnoreParenImpCasts(); |
12504 | SourceLocation ExprLoc = E->getExprLoc(); |
12505 | |
12506 | if (const auto *BO = dyn_cast<BinaryOperator>(E)) { |
12507 | BinaryOperator::Opcode Opc = BO->getOpcode(); |
12508 | Expr::EvalResult Result; |
12509 | |
12510 | if (Opc == BO_Shl) { |
12511 | const auto *LHS = getIntegerLiteral(BO->getLHS()); |
12512 | const auto *RHS = getIntegerLiteral(BO->getRHS()); |
12513 | if (LHS && LHS->getValue() == 0) |
12514 | S.Diag(ExprLoc, diag::warn_left_shift_always) << 0; |
12515 | else if (!E->isValueDependent() && LHS && RHS && |
12516 | RHS->getValue().isNonNegative() && |
12517 | E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) |
12518 | S.Diag(ExprLoc, diag::warn_left_shift_always) |
12519 | << (Result.Val.getInt() != 0); |
12520 | else if (E->getType()->isSignedIntegerType()) |
12521 | S.Diag(ExprLoc, diag::warn_left_shift_in_bool_context) << E; |
12522 | } |
12523 | } |
12524 | |
12525 | if (const auto *CO = dyn_cast<ConditionalOperator>(E)) { |
12526 | const auto *LHS = getIntegerLiteral(CO->getTrueExpr()); |
12527 | const auto *RHS = getIntegerLiteral(CO->getFalseExpr()); |
12528 | if (!LHS || !RHS) |
12529 | return; |
12530 | if ((LHS->getValue() == 0 || LHS->getValue() == 1) && |
12531 | (RHS->getValue() == 0 || RHS->getValue() == 1)) |
12532 | |
12533 | return; |
12534 | if (LHS->getValue() != 0 && RHS->getValue() != 0) |
12535 | S.Diag(ExprLoc, diag::warn_integer_constants_in_conditional_always_true); |
12536 | } |
12537 | } |
12538 | |
12539 | static void CheckImplicitConversion(Sema &S, Expr *E, QualType T, |
12540 | SourceLocation CC, |
12541 | bool *ICContext = nullptr, |
12542 | bool IsListInit = false) { |
12543 | if (E->isTypeDependent() || E->isValueDependent()) return; |
12544 | |
12545 | const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr(); |
12546 | const Type *Target = S.Context.getCanonicalType(T).getTypePtr(); |
12547 | if (Source == Target) return; |
12548 | if (Target->isDependentType()) return; |
12549 | |
12550 | |
12551 | |
12552 | |
12553 | |
12554 | |
12555 | if (CC.isInvalid()) |
12556 | return; |
12557 | |
12558 | if (Source->isAtomicType()) |
12559 | S.Diag(E->getExprLoc(), diag::warn_atomic_implicit_seq_cst); |
12560 | |
12561 | |
12562 | if (Target->isSpecificBuiltinType(BuiltinType::Bool)) { |
12563 | if (isa<StringLiteral>(E)) |
12564 | |
12565 | |
12566 | |
12567 | return DiagnoseImpCast(S, E, T, CC, |
12568 | diag::warn_impcast_string_literal_to_bool); |
12569 | if (isa<ObjCStringLiteral>(E) || isa<ObjCArrayLiteral>(E) || |
12570 | isa<ObjCDictionaryLiteral>(E) || isa<ObjCBoxedExpr>(E)) { |
12571 | |
12572 | |
12573 | return DiagnoseImpCast(S, E, T, CC, |
12574 | diag::warn_impcast_objective_c_literal_to_bool); |
12575 | } |
12576 | if (Source->isPointerType() || Source->canDecayToPointerType()) { |
12577 | |
12578 | S.DiagnoseAlwaysNonNullPointer(E, Expr::NPCK_NotNull, false, |
12579 | SourceRange(CC)); |
12580 | } |
12581 | } |
12582 | |
12583 | |
12584 | |
12585 | |
12586 | if (isObjCSignedCharBool(S, T) && Source->isIntegralType(S.Context)) { |
12587 | Expr::EvalResult Result; |
12588 | if (E->EvaluateAsInt(Result, S.getASTContext(), |
12589 | Expr::SE_AllowSideEffects)) { |
12590 | if (Result.Val.getInt() != 1 && Result.Val.getInt() != 0) { |
12591 | adornObjCBoolConversionDiagWithTernaryFixit( |
12592 | S, E, |
12593 | S.Diag(CC, diag::warn_impcast_constant_value_to_objc_bool) |
12594 | << toString(Result.Val.getInt(), 10)); |
12595 | } |
12596 | return; |
12597 | } |
12598 | } |
12599 | |
12600 | |
12601 | |
12602 | if (auto *ArrayLiteral = dyn_cast<ObjCArrayLiteral>(E)) |
12603 | checkObjCArrayLiteral(S, QualType(Target, 0), ArrayLiteral); |
12604 | else if (auto *DictionaryLiteral = dyn_cast<ObjCDictionaryLiteral>(E)) |
12605 | checkObjCDictionaryLiteral(S, QualType(Target, 0), DictionaryLiteral); |
12606 | |
12607 | |
12608 | if (isa<VectorType>(Source)) { |
12609 | if (Target->isVLSTBuiltinType() && |
12610 | (S.Context.areCompatibleSveTypes(QualType(Target, 0), |
12611 | QualType(Source, 0)) || |
12612 | S.Context.areLaxCompatibleSveTypes(QualType(Target, 0), |
12613 | QualType(Source, 0)))) |
12614 | return; |
12615 | |
12616 | if (!isa<VectorType>(Target)) { |
12617 | if (S.SourceMgr.isInSystemMacro(CC)) |
12618 | return; |
12619 | return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_vector_scalar); |
12620 | } |
12621 | |
12622 | |
12623 | |
12624 | if (S.Context.getTypeSize(Source) == S.Context.getTypeSize(Target)) |
12625 | return; |
12626 | |
12627 | Source = cast<VectorType>(Source)->getElementType().getTypePtr(); |
12628 | Target = cast<VectorType>(Target)->getElementType().getTypePtr(); |
12629 | } |
12630 | if (auto VecTy = dyn_cast<VectorType>(Target)) |
12631 | Target = VecTy->getElementType().getTypePtr(); |
12632 | |
12633 | |
12634 | if (isa<ComplexType>(Source)) { |
12635 | if (!isa<ComplexType>(Target)) { |
12636 | if (S.SourceMgr.isInSystemMacro(CC) || Target->isBooleanType()) |
12637 | return; |
12638 | |
12639 | return DiagnoseImpCast(S, E, T, CC, |
12640 | S.getLangOpts().CPlusPlus |
12641 | ? diag::err_impcast_complex_scalar |
12642 | : diag::warn_impcast_complex_scalar); |
12643 | } |
12644 | |
12645 | Source = cast<ComplexType>(Source)->getElementType().getTypePtr(); |
12646 | Target = cast<ComplexType>(Target)->getElementType().getTypePtr(); |
12647 | } |
12648 | |
12649 | const BuiltinType *SourceBT = dyn_cast<BuiltinType>(Source); |
12650 | const BuiltinType *TargetBT = dyn_cast<BuiltinType>(Target); |
12651 | |
12652 | |
12653 | if (SourceBT && SourceBT->isFloatingPoint()) { |
12654 | |
12655 | if (TargetBT && TargetBT->isFloatingPoint()) { |
12656 | |
12657 | |
12658 | int Order = S.getASTContext().getFloatingTypeSemanticOrder( |
12659 | QualType(SourceBT, 0), QualType(TargetBT, 0)); |
12660 | if (Order > 0) { |
12661 | |
12662 | |
12663 | Expr::EvalResult result; |
12664 | if (E->EvaluateAsRValue(result, S.Context)) { |
12665 | |
12666 | if (IsSameFloatAfterCast(result.Val, |
12667 | S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)), |
12668 | S.Context.getFloatTypeSemantics(QualType(SourceBT, 0)))) |
12669 | return; |
12670 | } |
12671 | |
12672 | if (S.SourceMgr.isInSystemMacro(CC)) |
12673 | return; |
12674 | |
12675 | DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_precision); |
12676 | } |
12677 | |
12678 | else if (Order < 0) { |
12679 | if (S.SourceMgr.isInSystemMacro(CC)) |
12680 | return; |
12681 | |
12682 | DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_double_promotion); |
12683 | } |
12684 | return; |
12685 | } |
12686 | |
12687 | |
12688 | if (TargetBT && TargetBT->isInteger()) { |
12689 | if (S.SourceMgr.isInSystemMacro(CC)) |
12690 | return; |
12691 | |
12692 | DiagnoseFloatingImpCast(S, E, T, CC); |
12693 | } |
12694 | |
12695 | |
12696 | |
12697 | |
12698 | |
12699 | |
12700 | |
12701 | |
12702 | |
12703 | if (Target->isBooleanType() && isa<CallExpr>(E)) { |
12704 | |
12705 | |
12706 | |
12707 | CallExpr *CEx = cast<CallExpr>(E); |
12708 | if (unsigned NumArgs = CEx->getNumArgs()) { |
12709 | Expr *LastA = CEx->getArg(NumArgs - 1); |
12710 | Expr *InnerE = LastA->IgnoreParenImpCasts(); |
12711 | if (isa<ImplicitCastExpr>(LastA) && |
12712 | InnerE->getType()->isBooleanType()) { |
12713 | |
12714 | DiagnoseImpCast(S, E, T, CC, |
12715 | diag::warn_impcast_floating_point_to_bool); |
12716 | } |
12717 | } |
12718 | } |
12719 | return; |
12720 | } |
12721 | |
12722 | |
12723 | if (Source->isFixedPointType()) { |
12724 | if (Target->isUnsaturatedFixedPointType()) { |
12725 | Expr::EvalResult Result; |
12726 | if (E->EvaluateAsFixedPoint(Result, S.Context, Expr::SE_AllowSideEffects, |
12727 | S.isConstantEvaluated())) { |
12728 | llvm::APFixedPoint Value = Result.Val.getFixedPoint(); |
12729 | llvm::APFixedPoint MaxVal = S.Context.getFixedPointMax(T); |
12730 | llvm::APFixedPoint MinVal = S.Context.getFixedPointMin(T); |
12731 | if (Value > MaxVal || Value < MinVal) { |
12732 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12733 | S.PDiag(diag::warn_impcast_fixed_point_range) |
12734 | << Value.toString() << T |
12735 | << E->getSourceRange() |
12736 | << clang::SourceRange(CC)); |
12737 | return; |
12738 | } |
12739 | } |
12740 | } else if (Target->isIntegerType()) { |
12741 | Expr::EvalResult Result; |
12742 | if (!S.isConstantEvaluated() && |
12743 | E->EvaluateAsFixedPoint(Result, S.Context, |
12744 | Expr::SE_AllowSideEffects)) { |
12745 | llvm::APFixedPoint FXResult = Result.Val.getFixedPoint(); |
12746 | |
12747 | bool Overflowed; |
12748 | llvm::APSInt IntResult = FXResult.convertToInt( |
12749 | S.Context.getIntWidth(T), |
12750 | Target->isSignedIntegerOrEnumerationType(), &Overflowed); |
12751 | |
12752 | if (Overflowed) { |
12753 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12754 | S.PDiag(diag::warn_impcast_fixed_point_range) |
12755 | << FXResult.toString() << T |
12756 | << E->getSourceRange() |
12757 | << clang::SourceRange(CC)); |
12758 | return; |
12759 | } |
12760 | } |
12761 | } |
12762 | } else if (Target->isUnsaturatedFixedPointType()) { |
12763 | if (Source->isIntegerType()) { |
12764 | Expr::EvalResult Result; |
12765 | if (!S.isConstantEvaluated() && |
12766 | E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) { |
12767 | llvm::APSInt Value = Result.Val.getInt(); |
12768 | |
12769 | bool Overflowed; |
12770 | llvm::APFixedPoint IntResult = llvm::APFixedPoint::getFromIntValue( |
12771 | Value, S.Context.getFixedPointSemantics(T), &Overflowed); |
12772 | |
12773 | if (Overflowed) { |
12774 | S.DiagRuntimeBehavior(E->getExprLoc(), E, |
12775 | S.PDiag(diag::warn_impcast_fixed_point_range) |
12776 | << toString(Value, 10) << T |
12777 | << E->getSourceRange() |
12778 | << clang::SourceRange(CC)); |
12779 | return; |
12780 | } |
12781 | } |
12782 | } |
12783 | } |
12784 | |
12785 | |
12786 | |
12787 | |
12788 | if (SourceBT && TargetBT && SourceBT->isIntegerType() && |
12789 | TargetBT->isFloatingType() && !IsListInit) { |
12790 | |
12791 | IntRange SourceRange = GetExprRange(S.Context, E, S.isConstantEvaluated(), |
12792 | true); |
12793 | unsigned int SourcePrecision = SourceRange.Width; |
12794 | |
12795 | |
12796 | |
12797 | unsigned int TargetPrecision = llvm::APFloatBase::semanticsPrecision( |
12798 | S.Context.getFloatTypeSemantics(QualType(TargetBT, 0))); |
12799 | |
12800 | if (SourcePrecision > 0 && TargetPrecision > 0 && |
12801 | SourcePrecision > TargetPrecision) { |
12802 | |
12803 | if (Optional<llvm::APSInt> SourceInt = |
12804 | E->getIntegerConstantExpr(S.Context)) { |
12805 | |
12806 | |
12807 | |
12808 | llvm::APFloat TargetFloatValue( |
12809 | S.Context.getFloatTypeSemantics(QualType(TargetBT, 0))); |
12810 | llvm::APFloat::opStatus ConversionStatus = |
12811 | TargetFloatValue.convertFromAPInt( |
12812 | *SourceInt, SourceBT->isSignedInteger(), |
12813 | llvm::APFloat::rmNearestTiesToEven); |
12814 | |
12815 | if (ConversionStatus != llvm::APFloat::opOK) { |
12816 | SmallString<32> PrettySourceValue; |
12817 | SourceInt->toString(PrettySourceValue, 10); |
12818 | SmallString<32> PrettyTargetValue; |
12819 | TargetFloatValue.toString(PrettyTargetValue, TargetPrecision); |
12820 | |
12821 | S.DiagRuntimeBehavior( |
12822 | E->getExprLoc(), E, |
12823 | S.PDiag(diag::warn_impcast_integer_float_precision_constant) |
12824 | << PrettySourceValue << PrettyTargetValue << E->getType() << T |
12825 | << E->getSourceRange() << clang::SourceRange(CC)); |
12826 | } |
12827 | } else { |
12828 | |
12829 | DiagnoseImpCast(S, E, T, CC, |
12830 | diag::warn_impcast_integer_float_precision); |
12831 | } |
12832 | } |
12833 | } |
12834 | |
12835 | DiagnoseNullConversion(S, E, T, CC); |
12836 | |
12837 | S.DiscardMisalignedMemberAddress(Target, E); |
12838 | |
12839 | if (Target->isBooleanType()) |
12840 | DiagnoseIntInBoolContext(S, E); |
12841 | |
12842 | if (!Source->isIntegerType() || !Target->isIntegerType()) |
12843 | return; |
12844 | |
12845 | |
12846 | |
12847 | if (Target->isSpecificBuiltinType(BuiltinType::Bool)) |
12848 | return; |
12849 | |
12850 | if (isObjCSignedCharBool(S, T) && !Source->isCharType() && |
12851 | !E->isKnownToHaveBooleanValue(false)) { |
12852 | return adornObjCBoolConversionDiagWithTernaryFixit( |
12853 | S, E, |
12854 | S.Diag(CC, diag::warn_impcast_int_to_objc_signed_char_bool) |
12855 | << E->getType()); |
12856 | } |
12857 | |
12858 | IntRange SourceTypeRange = |
12859 | IntRange::forTargetOfCanonicalType(S.Context, Source); |
12860 | IntRange LikelySourceRange = |
12861 | GetExprRange(S.Context, E, S.isConstantEvaluated(), true); |
12862 | IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target); |
12863 | |
12864 | if (LikelySourceRange.Width > TargetRange.Width) { |
12865 | |
12866 | |
12867 | Expr::EvalResult Result; |
12868 | if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects, |
12869 | S.isConstantEvaluated())) { |
12870 | llvm::APSInt Value(32); |
12871 | Value = Result.Val.getInt(); |
12872 | |
12873 | if (S.SourceMgr.isInSystemMacro(CC)) |
12874 | return; |
12875 | |
12876 | std::string PrettySourceValue = toString(Value, 10); |
12877 | std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); |
12878 | |
12879 | S.DiagRuntimeBehavior( |
12880 | E->getExprLoc(), E, |
12881 | S.PDiag(diag::warn_impcast_integer_precision_constant) |
12882 | << PrettySourceValue << PrettyTargetValue << E->getType() << T |
12883 | << E->getSourceRange() << SourceRange(CC)); |
12884 | return; |
12885 | } |
12886 | |
12887 | |
12888 | if (S.SourceMgr.isInSystemMacro(CC)) |
12889 | return; |
12890 | |
12891 | if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64) |
12892 | return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32, |
12893 | true); |
12894 | return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_precision); |
12895 | } |
12896 | |
12897 | if (TargetRange.Width > SourceTypeRange.Width) { |
12898 | if (auto *UO = dyn_cast<UnaryOperator>(E)) |
12899 | if (UO->getOpcode() == UO_Minus) |
12900 | if (Source->isUnsignedIntegerType()) { |
12901 | if (Target->isUnsignedIntegerType()) |
12902 | return DiagnoseImpCast(S, E, T, CC, |
12903 | diag::warn_impcast_high_order_zero_bits); |
12904 | if (Target->isSignedIntegerType()) |
12905 | return DiagnoseImpCast(S, E, T, CC, |
12906 | diag::warn_impcast_nonnegative_result); |
12907 | } |
12908 | } |
12909 | |
12910 | if (TargetRange.Width == LikelySourceRange.Width && |
12911 | !TargetRange.NonNegative && LikelySourceRange.NonNegative && |
12912 | Source->isSignedIntegerType()) { |
12913 | |
12914 | |
12915 | |
12916 | |
12917 | Expr::EvalResult Result; |
12918 | if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects) && |
12919 | !S.SourceMgr.isInSystemMacro(CC)) { |
12920 | llvm::APSInt Value = Result.Val.getInt(); |
12921 | if (isSameWidthConstantConversion(S, E, T, CC)) { |
12922 | std::string PrettySourceValue = toString(Value, 10); |
12923 | std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); |
12924 | |
12925 | S.DiagRuntimeBehavior( |
12926 | E->getExprLoc(), E, |
12927 | S.PDiag(diag::warn_impcast_integer_precision_constant) |
12928 | << PrettySourceValue << PrettyTargetValue << E->getType() << T |
12929 | << E->getSourceRange() << SourceRange(CC)); |
12930 | return; |
12931 | } |
12932 | } |
12933 | |
12934 | |
12935 | } |
12936 | |
12937 | if ((TargetRange.NonNegative && !LikelySourceRange.NonNegative) || |
12938 | (!TargetRange.NonNegative && LikelySourceRange.NonNegative && |
12939 | LikelySourceRange.Width == TargetRange.Width)) { |
12940 | if (S.SourceMgr.isInSystemMacro(CC)) |
12941 | return; |
12942 | |
12943 | unsigned DiagID = diag::warn_impcast_integer_sign; |
12944 | |
12945 | |
12946 | |
12947 | |
12948 | |
12949 | |
12950 | if (ICContext) { |
12951 | DiagID = diag::warn_impcast_integer_sign_conditional; |
12952 | *ICContext = true; |
12953 | } |
12954 | |
12955 | return DiagnoseImpCast(S, E, T, CC, DiagID); |
12956 | } |
12957 | |
12958 | |
12959 | |
12960 | |
12961 | QualType SourceType = E->getType(); |
12962 | if (!S.getLangOpts().CPlusPlus) { |
12963 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) |
12964 | if (EnumConstantDecl *ECD = dyn_cast<EnumConstantDecl>(DRE->getDecl())) { |
12965 | EnumDecl *Enum = cast<EnumDecl>(ECD->getDeclContext()); |
12966 | SourceType = S.Context.getTypeDeclType(Enum); |
12967 | Source = S.Context.getCanonicalType(SourceType).getTypePtr(); |
12968 | } |
12969 | } |
12970 | |
12971 | if (const EnumType *SourceEnum = Source->getAs<EnumType>()) |
12972 | if (const EnumType *TargetEnum = Target->getAs<EnumType>()) |
12973 | if (SourceEnum->getDecl()->hasNameForLinkage() && |
12974 | TargetEnum->getDecl()->hasNameForLinkage() && |
12975 | SourceEnum != TargetEnum) { |
12976 | if (S.SourceMgr.isInSystemMacro(CC)) |
12977 | return; |
12978 | |
12979 | return DiagnoseImpCast(S, E, SourceType, T, CC, |
12980 | diag::warn_impcast_different_enum_types); |
12981 | } |
12982 | } |
12983 | |
12984 | static void CheckConditionalOperator(Sema &S, AbstractConditionalOperator *E, |
12985 | SourceLocation CC, QualType T); |
12986 | |
12987 | static void CheckConditionalOperand(Sema &S, Expr *E, QualType T, |
12988 | SourceLocation CC, bool &ICContext) { |
12989 | E = E->IgnoreParenImpCasts(); |
12990 | |
12991 | if (auto *CO = dyn_cast<AbstractConditionalOperator>(E)) |
12992 | return CheckConditionalOperator(S, CO, CC, T); |
12993 | |
12994 | AnalyzeImplicitConversions(S, E, CC); |
12995 | if (E->getType() != T) |
12996 | return CheckImplicitConversion(S, E, T, CC, &ICContext); |
12997 | } |
12998 | |
12999 | static void CheckConditionalOperator(Sema &S, AbstractConditionalOperator *E, |
13000 | SourceLocation CC, QualType T) { |
13001 | AnalyzeImplicitConversions(S, E->getCond(), E->getQuestionLoc()); |
13002 | |
13003 | Expr *TrueExpr = E->getTrueExpr(); |
13004 | if (auto *BCO = dyn_cast<BinaryConditionalOperator>(E)) |
13005 | TrueExpr = BCO->getCommon(); |
13006 | |
13007 | bool Suspicious = false; |
13008 | CheckConditionalOperand(S, TrueExpr, T, CC, Suspicious); |
13009 | CheckConditionalOperand(S, E->getFalseExpr(), T, CC, Suspicious); |
13010 | |
13011 | if (T->isBooleanType()) |
13012 | DiagnoseIntInBoolContext(S, E); |
13013 | |
13014 | |
13015 | |
13016 | if (!Suspicious) return; |
13017 | |
13018 | |
13019 | if (!S.Diags.isIgnored(diag::warn_impcast_integer_sign_conditional, CC)) |
13020 | return; |
13021 | |
13022 | |
13023 | |
13024 | if (E->getType() == T) return; |
13025 | |
13026 | Suspicious = false; |
13027 | CheckImplicitConversion(S, TrueExpr->IgnoreParenImpCasts(), |
13028 | E->getType(), CC, &Suspicious); |
13029 | if (!Suspicious) |
13030 | CheckImplicitConversion(S, E->getFalseExpr()->IgnoreParenImpCasts(), |
13031 | E->getType(), CC, &Suspicious); |
13032 | } |
13033 | |
13034 | |
13035 | |
13036 | static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { |
13037 | if (S.getLangOpts().Bool) |
13038 | return; |
13039 | if (E->IgnoreParenImpCasts()->getType()->isAtomicType()) |
13040 | return; |
13041 | CheckImplicitConversion(S, E->IgnoreParenImpCasts(), S.Context.BoolTy, CC); |
13042 | } |
13043 | |
13044 | namespace { |
13045 | struct AnalyzeImplicitConversionsWorkItem { |
13046 | Expr *E; |
13047 | SourceLocation CC; |
13048 | bool IsListInit; |
13049 | }; |
13050 | } |
13051 | |
13052 | |
13053 | |
13054 | static void AnalyzeImplicitConversions( |
13055 | Sema &S, AnalyzeImplicitConversionsWorkItem Item, |
13056 | llvm::SmallVectorImpl<AnalyzeImplicitConversionsWorkItem> &WorkList) { |
13057 | Expr *OrigE = Item.E; |
13058 | SourceLocation CC = Item.CC; |
13059 | |
13060 | QualType T = OrigE->getType(); |
13061 | Expr *E = OrigE->IgnoreParenImpCasts(); |
13062 | |
13063 | |
13064 | |
13065 | |
13066 | bool IsListInit = Item.IsListInit || |
13067 | (isa<InitListExpr>(OrigE) && S.getLangOpts().CPlusPlus); |
13068 | |
13069 | if (E->isTypeDependent() || E->isValueDependent()) |
13070 | return; |
13071 | |
13072 | Expr *SourceExpr = E; |
13073 | |
13074 | |
13075 | |
13076 | |
13077 | if (auto *OVE = dyn_cast<OpaqueValueExpr>(E)) |
13078 | if (auto *Src = OVE->getSourceExpr()) |
13079 | SourceExpr = Src; |
13080 | |
13081 | if (const auto *UO = dyn_cast<UnaryOperator>(SourceExpr)) |
13082 | if (UO->getOpcode() == UO_Not && |
13083 | UO->getSubExpr()->isKnownToHaveBooleanValue()) |
13084 | S.Diag(UO->getBeginLoc(), diag::warn_bitwise_negation_bool) |
13085 | << OrigE->getSourceRange() << T->isBooleanType() |
13086 | << FixItHint::CreateReplacement(UO->getBeginLoc(), "!"); |
13087 | |
13088 | |
13089 | |
13090 | if (auto *CO = dyn_cast<AbstractConditionalOperator>(SourceExpr)) { |
13091 | CheckConditionalOperator(S, CO, CC, T); |
13092 | return; |
13093 | } |
13094 | |
13095 | |
13096 | if (CallExpr *Call = dyn_cast<CallExpr>(SourceExpr)) |
13097 | CheckImplicitArgumentConversions(S, Call, CC); |
13098 | |
13099 | |
13100 | |
13101 | |
13102 | if (SourceExpr->getType() != T) |
13103 | CheckImplicitConversion(S, SourceExpr, T, CC, nullptr, IsListInit); |
13104 | |
13105 | |
13106 | |
13107 | if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(E)) { |
13108 | |
13109 | |
13110 | |
13111 | for (auto *SE : POE->semantics()) |
13112 | if (auto *OVE = dyn_cast<OpaqueValueExpr>(SE)) |
13113 | WorkList.push_back({OVE->getSourceExpr(), CC, IsListInit}); |
13114 | } |
13115 | |
13116 | |
13117 | if (auto *CE = dyn_cast<ExplicitCastExpr>(E)) { |
13118 | E = CE->getSubExpr()->IgnoreParenImpCasts(); |
13119 | if (!CE->getType()->isVoidType() && E->getType()->isAtomicType()) |
13120 | S.Diag(E->getBeginLoc(), diag::warn_atomic_implicit_seq_cst); |
13121 | WorkList.push_back({E, CC, IsListInit}); |
13122 | return; |
13123 | } |
13124 | |
13125 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { |
13126 | |
13127 | if (BO->isComparisonOp()) |
13128 | return AnalyzeComparison(S, BO); |
13129 | |
13130 | |
13131 | if (BO->getOpcode() == BO_Assign) |
13132 | return AnalyzeAssignment(S, BO); |
13133 | |
13134 | if (BO->isAssignmentOp()) |
13135 | return AnalyzeCompoundAssignment(S, BO); |
13136 | } |
13137 | |
13138 | |
13139 | |
13140 | |
13141 | |
13142 | if (isa<StmtExpr>(E)) return; |
13143 | |
13144 | |
13145 | if (isa<UnaryExprOrTypeTraitExpr>(E)) return; |
13146 | |
13147 | |
13148 | CC = E->getExprLoc(); |
13149 | BinaryOperator *BO = dyn_cast<BinaryOperator>(E); |
13150 | bool IsLogicalAndOperator = BO && BO->getOpcode() == BO_LAnd; |
13151 | for (Stmt *SubStmt : E->children()) { |
13152 | Expr *ChildExpr = dyn_cast_or_null<Expr>(SubStmt); |
13153 | if (!ChildExpr) |
13154 | continue; |
13155 | |
13156 | if (IsLogicalAndOperator && |
13157 | isa<StringLiteral>(ChildExpr->IgnoreParenImpCasts())) |
13158 | |
13159 | |
13160 | continue; |
13161 | WorkList.push_back({ChildExpr, CC, IsListInit}); |
13162 | } |
13163 | |
13164 | if (BO && BO->isLogicalOp()) { |
13165 | Expr *SubExpr = BO->getLHS()->IgnoreParenImpCasts(); |
13166 | if (!IsLogicalAndOperator || !isa<StringLiteral>(SubExpr)) |
13167 | ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); |
13168 | |
13169 | SubExpr = BO->getRHS()->IgnoreParenImpCasts(); |
13170 | if (!IsLogicalAndOperator || !isa<StringLiteral>(SubExpr)) |
13171 | ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); |
13172 | } |
13173 | |
13174 | if (const UnaryOperator *U = dyn_cast<UnaryOperator>(E)) { |
13175 | if (U->getOpcode() == UO_LNot) { |
13176 | ::CheckBoolLikeConversion(S, U->getSubExpr(), CC); |
13177 | } else if (U->getOpcode() != UO_AddrOf) { |
13178 | if (U->getSubExpr()->getType()->isAtomicType()) |
13179 | S.Diag(U->getSubExpr()->getBeginLoc(), |
13180 | diag::warn_atomic_implicit_seq_cst); |
13181 | } |
13182 | } |
13183 | } |
13184 | |
13185 | |
13186 | |
13187 | |
13188 | static void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC, |
13189 | bool IsListInit) { |
13190 | llvm::SmallVector<AnalyzeImplicitConversionsWorkItem, 16> WorkList; |
13191 | WorkList.push_back({OrigE, CC, IsListInit}); |
13192 | while (!WorkList.empty()) |
13193 | AnalyzeImplicitConversions(S, WorkList.pop_back_val(), WorkList); |
13194 | } |
13195 | |
13196 | |
13197 | static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntT) { |
13198 | |
13199 | |
13200 | if (!E->getType()->isIntegerType()) { |
13201 | S.Diag(E->getBeginLoc(), |
13202 | diag::err_opencl_enqueue_kernel_invalid_local_size_type); |
13203 | return true; |
13204 | } |
13205 | |
13206 | |
13207 | CheckImplicitConversion(S, E, IntT, E->getBeginLoc()); |
13208 | return false; |
13209 | } |
13210 | |
13211 | |
13212 | |
13213 | static bool CheckForReference(Sema &SemaRef, const Expr *E, |
13214 | const PartialDiagnostic &PD) { |
13215 | E = E->IgnoreParenImpCasts(); |
13216 | |
13217 | const FunctionDecl *FD = nullptr; |
13218 | |
13219 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { |
13220 | if (!DRE->getDecl()->getType()->isReferenceType()) |
13221 | return false; |
13222 | } else if (const MemberExpr *M = dyn_cast<MemberExpr>(E)) { |
13223 | if (!M->getMemberDecl()->getType()->isReferenceType()) |
13224 | return false; |
13225 | } else if (const CallExpr *Call = dyn_cast<CallExpr>(E)) { |
13226 | if (!Call->getCallReturnType(SemaRef.Context)->isReferenceType()) |
13227 | return false; |
13228 | FD = Call->getDirectCallee(); |
13229 | } else { |
13230 | return false; |
13231 | } |
13232 | |
13233 | SemaRef.Diag(E->getExprLoc(), PD); |
13234 | |
13235 | |
13236 | if (FD) { |
13237 | SemaRef.Diag(FD->getLocation(), diag::note_reference_is_return_value) << FD; |
13238 | } |
13239 | |
13240 | return true; |
13241 | } |
13242 | |
13243 | |
13244 | |
13245 | |
13246 | static bool IsInAnyMacroBody(const SourceManager &SM, SourceLocation Loc) { |
13247 | if (Loc.isInvalid()) |
13248 | return false; |
13249 | |
13250 | while (Loc.isMacroID()) { |
13251 | if (SM.isMacroBodyExpansion(Loc)) |
13252 | return true; |
13253 | Loc = SM.getImmediateMacroCallerLoc(Loc); |
13254 | } |
13255 | |
13256 | return false; |
13257 | } |
13258 | |
13259 | |
13260 | |
13261 | |
13262 | |
13263 | |
13264 | |
13265 | void Sema::DiagnoseAlwaysNonNullPointer(Expr *E, |
13266 | Expr::NullPointerConstantKind NullKind, |
13267 | bool IsEqual, SourceRange Range) { |
13268 | if (!E) |
13269 | return; |
13270 | |
13271 | |
13272 | if (E->getExprLoc().isMacroID()) { |
13273 | const SourceManager &SM = getSourceManager(); |
13274 | if (IsInAnyMacroBody(SM, E->getExprLoc()) || |
13275 | IsInAnyMacroBody(SM, Range.getBegin())) |
13276 | return; |
13277 | } |
13278 | E = E->IgnoreImpCasts(); |
13279 | |
13280 | const bool IsCompare = NullKind != Expr::NPCK_NotNull; |
13281 | |
13282 | if (isa<CXXThisExpr>(E)) { |
13283 | unsigned DiagID = IsCompare ? diag::warn_this_null_compare |
13284 | : diag::warn_this_bool_conversion; |
13285 | Diag(E->getExprLoc(), DiagID) << E->getSourceRange() << Range << IsEqual; |
13286 | return; |
13287 | } |
13288 | |
13289 | bool IsAddressOf = false; |
13290 | |
13291 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { |
13292 | if (UO->getOpcode() != UO_AddrOf) |
13293 | return; |
13294 | IsAddressOf = true; |
13295 | E = UO->getSubExpr(); |
13296 | } |
13297 | |
13298 | if (IsAddressOf) { |
13299 | unsigned DiagID = IsCompare |
13300 | ? diag::warn_address_of_reference_null_compare |
13301 | : diag::warn_address_of_reference_bool_conversion; |
13302 | PartialDiagnostic PD = PDiag(DiagID) << E->getSourceRange() << Range |
13303 | << IsEqual; |
13304 | if (CheckForReference(*this, E, PD)) { |
13305 | return; |
13306 | } |
13307 | } |
13308 | |
13309 | auto ComplainAboutNonnullParamOrCall = [&](const Attr *NonnullAttr) { |
13310 | bool IsParam = isa<NonNullAttr>(NonnullAttr); |
13311 | std::string Str; |
13312 | llvm::raw_string_ostream S(Str); |
13313 | E->printPretty(S, nullptr, getPrintingPolicy()); |
13314 | unsigned DiagID = IsCompare ? diag::warn_nonnull_expr_compare |
13315 | : diag::warn_cast_nonnull_to_bool; |
13316 | Diag(E->getExprLoc(), DiagID) << IsParam << S.str() |
13317 | << E->getSourceRange() << Range << IsEqual; |
13318 | Diag(NonnullAttr->getLocation(), diag::note_declared_nonnull) << IsParam; |
13319 | }; |
13320 | |
13321 | |
13322 | if (auto *Call = dyn_cast<CallExpr>(E->IgnoreParenImpCasts())) { |
13323 | if (auto *Callee = Call->getDirectCallee()) { |
13324 | if (const Attr *A = Callee->getAttr<ReturnsNonNullAttr>()) { |
13325 | ComplainAboutNonnullParamOrCall(A); |
13326 | return; |
13327 | } |
13328 | } |
13329 | } |
13330 | |
13331 | |
13332 | ValueDecl *D = nullptr; |
13333 | if (DeclRefExpr *R = dyn_cast<DeclRefExpr>(E)) { |
13334 | D = R->getDecl(); |
13335 | } else if (MemberExpr *M = dyn_cast<MemberExpr>(E)) { |
13336 | D = M->getMemberDecl(); |
13337 | } |
13338 | |
13339 | |
13340 | if (!D || D->isWeak()) |
13341 | return; |
13342 | |
13343 | |
13344 | if (const auto* PV = dyn_cast<ParmVarDecl>(D)) { |
13345 | if (getCurFunction() && |
13346 | !getCurFunction()->ModifiedNonNullParams.count(PV)) { |
13347 | if (const Attr *A = PV->getAttr<NonNullAttr>()) { |
13348 | ComplainAboutNonnullParamOrCall(A); |
13349 | return; |
13350 | } |
13351 | |
13352 | if (const auto *FD = dyn_cast<FunctionDecl>(PV->getDeclContext())) { |
13353 | |
13354 | if (FD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate) |
13355 | return; |
13356 | auto ParamIter = llvm::find(FD->parameters(), PV); |
13357 | assert(ParamIter != FD->param_end()); |
13358 | unsigned ParamNo = std::distance(FD->param_begin(), ParamIter); |
13359 | |
13360 | for (const auto *NonNull : FD->specific_attrs<NonNullAttr>()) { |
13361 | if (!NonNull->args_size()) { |
13362 | ComplainAboutNonnullParamOrCall(NonNull); |
13363 | return; |
13364 | } |
13365 | |
13366 | for (const ParamIdx &ArgNo : NonNull->args()) { |
13367 | if (ArgNo.getASTIndex() == ParamNo) { |
13368 | ComplainAboutNonnullParamOrCall(NonNull); |
13369 | return; |
13370 | } |
13371 | } |
13372 | } |
13373 | } |
13374 | } |
13375 | } |
13376 | |
13377 | QualType T = D->getType(); |
13378 | const bool IsArray = T->isArrayType(); |
13379 | const bool IsFunction = T->isFunctionType(); |
13380 | |
13381 | |
13382 | if (IsAddressOf && IsFunction) { |
13383 | return; |
13384 | } |
13385 | |
13386 | |
13387 | if (!IsAddressOf && !IsFunction && !IsArray) |
13388 | return; |
13389 | |
13390 | |
13391 | std::string Str; |
13392 | llvm::raw_string_ostream S(Str); |
13393 | E->printPretty(S, nullptr, getPrintingPolicy()); |
13394 | |
13395 | unsigned DiagID = IsCompare ? diag::warn_null_pointer_compare |
13396 | : diag::warn_impcast_pointer_to_bool; |
13397 | enum { |
13398 | AddressOf, |
13399 | FunctionPointer, |
13400 | ArrayPointer |
13401 | } DiagType; |
13402 | if (IsAddressOf) |
13403 | DiagType = AddressOf; |
13404 | else if (IsFunction) |
13405 | DiagType = FunctionPointer; |
13406 | else if (IsArray) |
13407 | DiagType = ArrayPointer; |
13408 | else |
13409 | llvm_unreachable("Could not determine diagnostic."); |
13410 | Diag(E->getExprLoc(), DiagID) << DiagType << S.str() << E->getSourceRange() |
13411 | << Range << IsEqual; |
13412 | |
13413 | if (!IsFunction) |
13414 | return; |
13415 | |
13416 | |
13417 | Diag(E->getExprLoc(), diag::note_function_warning_silence) |
13418 | << FixItHint::CreateInsertion(E->getBeginLoc(), "&"); |
13419 | |
13420 | |
13421 | QualType ReturnType; |
13422 | UnresolvedSet<4> NonTemplateOverloads; |
13423 | tryExprAsCall(*E, ReturnType, NonTemplateOverloads); |
13424 | if (ReturnType.isNull()) |
13425 | return; |
13426 | |
13427 | if (IsCompare) { |
13428 | |
13429 | |
13430 | |
13431 | if (!ReturnType->isPointerType()) { |
13432 | if (NullKind == Expr::NPCK_ZeroExpression || |
13433 | NullKind == Expr::NPCK_ZeroLiteral) { |
13434 | if (!ReturnType->isIntegerType()) |
13435 | return; |
13436 | } else { |
13437 | return; |
13438 | } |
13439 | } |
13440 | } else { |
13441 | |
13442 | |
13443 | if (!ReturnType->isSpecificBuiltinType(BuiltinType::Bool)) |
13444 | return; |
13445 | } |
13446 | Diag(E->getExprLoc(), diag::note_function_to_function_call) |
13447 | << FixItHint::CreateInsertion(getLocForEndOfToken(E->getEndLoc()), "()"); |
13448 | } |
13449 | |
13450 | |
13451 | |
13452 | |
13453 | |
13454 | |
13455 | |
13456 | |
13457 | void Sema::CheckImplicitConversions(Expr *E, SourceLocation CC) { |
13458 | |
13459 | if (isUnevaluatedContext()) |
13460 | return; |
13461 | |
13462 | |
13463 | if (E->isTypeDependent() || E->isValueDependent()) |
13464 | return; |
13465 | |
13466 | |
13467 | |
13468 | |
13469 | CheckArrayAccess(E); |
13470 | |
13471 | |
13472 | AnalyzeImplicitConversions(*this, E, CC); |
13473 | } |
13474 | |
13475 | |
13476 | |
13477 | void Sema::CheckBoolLikeConversion(Expr *E, SourceLocation CC) { |
13478 | ::CheckBoolLikeConversion(*this, E, CC); |
13479 | } |
13480 | |
13481 | |
13482 | |
13483 | void Sema::CheckForIntOverflow (Expr *E) { |
13484 | |
13485 | SmallVector<Expr *, 2> Exprs(1, E); |
13486 | |
13487 | do { |
13488 | Expr *OriginalE = Exprs.pop_back_val(); |
13489 | Expr *E = OriginalE->IgnoreParenCasts(); |
13490 | |
13491 | if (isa<BinaryOperator>(E)) { |
13492 | E->EvaluateForOverflow(Context); |
13493 | continue; |
13494 | } |
13495 | |
13496 | if (auto InitList = dyn_cast<InitListExpr>(OriginalE)) |
13497 | Exprs.append(InitList->inits().begin(), InitList->inits().end()); |
13498 | else if (isa<ObjCBoxedExpr>(OriginalE)) |
13499 | E->EvaluateForOverflow(Context); |
13500 | else if (auto Call = dyn_cast<CallExpr>(E)) |
13501 | Exprs.append(Call->arg_begin(), Call->arg_end()); |
13502 | else if (auto Message = dyn_cast<ObjCMessageExpr>(E)) |
13503 | Exprs.append(Message->arg_begin(), Message->arg_end()); |
13504 | } while (!Exprs.empty()); |
13505 | } |
13506 | |
13507 | namespace { |
13508 | |
13509 | |
13510 | |
13511 | class SequenceChecker : public ConstEvaluatedExprVisitor<SequenceChecker> { |
13512 | using Base = ConstEvaluatedExprVisitor<SequenceChecker>; |
13513 | |
13514 | |
13515 | |
13516 | |
13517 | |
13518 | |
13519 | class SequenceTree { |
13520 | struct Value { |
13521 | explicit Value(unsigned Parent) : Parent(Parent), Merged(false) {} |
13522 | unsigned Parent : 31; |
13523 | unsigned Merged : 1; |
13524 | }; |
13525 | SmallVector<Value, 8> Values; |
13526 | |
13527 | public: |
13528 | |
13529 | |
13530 | class Seq { |
13531 | friend class SequenceTree; |
13532 | |
13533 | unsigned Index; |
13534 | |
13535 | explicit Seq(unsigned N) : Index(N) {} |
13536 | |
13537 | public: |
13538 | Seq() : Index(0) {} |
13539 | }; |
13540 | |
13541 | SequenceTree() { Values.push_back(Value(0)); } |
13542 | Seq root() const { return Seq(0); } |
13543 | |
13544 | |
13545 | |
13546 | |
13547 | Seq allocate(Seq Parent) { |
13548 | Values.push_back(Value(Parent.Index)); |
13549 | return Seq(Values.size() - 1); |
13550 | } |
13551 | |
13552 | |
13553 | void merge(Seq S) { |
13554 | Values[S.Index].Merged = true; |
13555 | } |
13556 | |
13557 | |
13558 | |
13559 | |
13560 | bool isUnsequenced(Seq Cur, Seq Old) { |
13561 | unsigned C = representative(Cur.Index); |
13562 | unsigned Target = representative(Old.Index); |
13563 | while (C >= Target) { |
13564 | if (C == Target) |
13565 | return true; |
13566 | C = Values[C].Parent; |
13567 | } |
13568 | return false; |
13569 | } |
13570 | |
13571 | private: |
13572 | |
13573 | unsigned representative(unsigned K) { |
13574 | if (Values[K].Merged) |
13575 | |
13576 | return Values[K].Parent = representative(Values[K].Parent); |
13577 | return K; |
13578 | } |
13579 | }; |
13580 | |
13581 | |
13582 | using Object = const NamedDecl *; |
13583 | |
13584 | |
13585 | |
13586 | enum UsageKind { |
13587 | |
13588 | UK_Use, |
13589 | |
13590 | |
13591 | |
13592 | UK_ModAsValue, |
13593 | |
13594 | |
13595 | |
13596 | UK_ModAsSideEffect, |
13597 | |
13598 | UK_Count = UK_ModAsSideEffect + 1 |
13599 | }; |
13600 | |
13601 | |
13602 | |
13603 | struct Usage { |
13604 | const Expr *UsageExpr; |
13605 | SequenceTree::Seq Seq; |
13606 | |
13607 | Usage() : UsageExpr(nullptr), Seq() {} |
13608 | }; |
13609 | |
13610 | struct UsageInfo { |
13611 | Usage Uses[UK_Count]; |
13612 | |
13613 | |
13614 | bool Diagnosed; |
13615 | |
13616 | UsageInfo() : Uses(), Diagnosed(false) {} |
13617 | }; |
13618 | using UsageInfoMap = llvm::SmallDenseMap<Object, UsageInfo, 16>; |
13619 | |
13620 | Sema &SemaRef; |
13621 | |
13622 | |
13623 | SequenceTree Tree; |
13624 | |
13625 | |
13626 | UsageInfoMap UsageMap; |
13627 | |
13628 | |
13629 | SequenceTree::Seq Region; |
13630 | |
13631 | |
13632 | |
13633 | SmallVectorImpl<std::pair<Object, Usage>> *ModAsSideEffect = nullptr; |
13634 | |
13635 | |
13636 | |
13637 | SmallVectorImpl<const Expr *> &WorkList; |
13638 | |
13639 | |
13640 | |
13641 | |
13642 | |
13643 | |
13644 | struct SequencedSubexpression { |
13645 | SequencedSubexpression(SequenceChecker &Self) |
13646 | : Self(Self), OldModAsSideEffect(Self.ModAsSideEffect) { |
13647 | Self.ModAsSideEffect = &ModAsSideEffect; |
13648 | } |
13649 | |
13650 | ~SequencedSubexpression() { |
13651 | for (const std::pair<Object, Usage> &M : llvm::reverse(ModAsSideEffect)) { |
13652 | |
13653 | |
13654 | |
13655 | UsageInfo &UI = Self.UsageMap[M.first]; |
13656 | auto &SideEffectUsage = UI.Uses[UK_ModAsSideEffect]; |
13657 | Self.addUsage(M.first, UI, SideEffectUsage.UsageExpr, UK_ModAsValue); |
13658 | SideEffectUsage = M.second; |
13659 | } |
13660 | Self.ModAsSideEffect = OldModAsSideEffect; |
13661 | } |
13662 | |
13663 | SequenceChecker &Self; |
13664 | SmallVector<std::pair<Object, Usage>, 4> ModAsSideEffect; |
13665 | SmallVectorImpl<std::pair<Object, Usage>> *OldModAsSideEffect; |
13666 | }; |
13667 | |
13668 | |
13669 | |
13670 | |
13671 | |
13672 | class EvaluationTracker { |
13673 | public: |
13674 | EvaluationTracker(SequenceChecker &Self) |
13675 | : Self(Self), Prev(Self.EvalTracker) { |
13676 | Self.EvalTracker = this; |
13677 | } |
13678 | |
13679 | ~EvaluationTracker() { |
13680 | Self.EvalTracker = Prev; |
13681 | if (Prev) |
13682 | Prev->EvalOK &= EvalOK; |
13683 | } |
13684 | |
13685 | bool evaluate(const Expr *E, bool &Result) { |
13686 | if (!EvalOK || E->isValueDependent()) |
13687 | return false; |
13688 | EvalOK = E->EvaluateAsBooleanCondition( |
13689 | Result, Self.SemaRef.Context, Self.SemaRef.isConstantEvaluated()); |
13690 | return EvalOK; |
13691 | } |
13692 | |
13693 | private: |
13694 | SequenceChecker &Self; |
13695 | EvaluationTracker *Prev; |
13696 | bool EvalOK = true; |
13697 | } *EvalTracker = nullptr; |
13698 | |
13699 | |
13700 | |
13701 | Object getObject(const Expr *E, bool Mod) const { |
13702 | E = E->IgnoreParenCasts(); |
13703 | if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { |
13704 | if (Mod && (UO->getOpcode() == UO_PreInc || UO->getOpcode() == UO_PreDec)) |
13705 | return getObject(UO->getSubExpr(), Mod); |
13706 | } else if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { |
13707 | if (BO->getOpcode() == BO_Comma) |
13708 | return getObject(BO->getRHS(), Mod); |
13709 | if (Mod && BO->isAssignmentOp()) |
13710 | return getObject(BO->getLHS(), Mod); |
13711 | } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { |
13712 | |
13713 | if (isa<CXXThisExpr>(ME->getBase()->IgnoreParenCasts())) |
13714 | return ME->getMemberDecl(); |
13715 | } else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) |
13716 | |
13717 | return DRE->getDecl(); |
13718 | return nullptr; |
13719 | } |
13720 | |
13721 | |
13722 | |
13723 | |
13724 | void addUsage(Object O, UsageInfo &UI, const Expr *UsageExpr, UsageKind UK) { |
13725 | |
13726 | Usage &U = UI.Uses[UK]; |
13727 | if (!U.UsageExpr || !Tree.isUnsequenced(Region, U.Seq)) { |
13728 | |
13729 | |
13730 | |
13731 | if (UK == UK_ModAsSideEffect && ModAsSideEffect) |
13732 | ModAsSideEffect->push_back(std::make_pair(O, U)); |
13733 | |
13734 | U.UsageExpr = UsageExpr; |
13735 | U.Seq = Region; |
13736 | } |
13737 | } |
13738 | |
13739 | |
13740 | |
13741 | |
13742 | |
13743 | |
13744 | void checkUsage(Object O, UsageInfo &UI, const Expr *UsageExpr, |
13745 | UsageKind OtherKind, bool IsModMod) { |
13746 | if (UI.Diagnosed) |
13747 | return; |
13748 | |
13749 | const Usage &U = UI.Uses[OtherKind]; |
13750 | if (!U.UsageExpr || !Tree.isUnsequenced(Region, U.Seq)) |
13751 | return; |
13752 | |
13753 | const Expr *Mod = U.UsageExpr; |
13754 | const Expr *ModOrUse = UsageExpr; |
13755 | if (OtherKind == UK_Use) |
13756 | std::swap(Mod, ModOrUse); |
13757 | |
13758 | SemaRef.DiagRuntimeBehavior( |
13759 | Mod->getExprLoc(), {Mod, ModOrUse}, |
13760 | SemaRef.PDiag(IsModMod ? diag::warn_unsequenced_mod_mod |
13761 | : diag::warn_unsequenced_mod_use) |
13762 | << O << SourceRange(ModOrUse->getExprLoc())); |
13763 | UI.Diagnosed = true; |
13764 | } |
13765 | |
13766 | |
13767 | |
13768 | |
13769 | |
13770 | |
13771 | |
13772 | |
13773 | |
13774 | |
13775 | |
13776 | |
13777 | |
13778 | |
13779 | |
13780 | |
13781 | |
13782 | |
13783 | |
13784 | |
13785 | |
13786 | |
13787 | |
13788 | |
13789 | |
13790 | |
13791 | |
13792 | void notePreUse(Object O, const Expr *UseExpr) { |
13793 | UsageInfo &UI = UsageMap[O]; |
13794 | |
13795 | checkUsage(O, UI, UseExpr, UK_ModAsValue, false); |
13796 | } |
13797 | |
13798 | void notePostUse(Object O, const Expr *UseExpr) { |
13799 | UsageInfo &UI = UsageMap[O]; |
13800 | checkUsage(O, UI, UseExpr, UK_ModAsSideEffect, |
13801 | false); |
13802 | addUsage(O, UI, UseExpr, UK_Use); |
13803 | } |
13804 | |
13805 | void notePreMod(Object O, const Expr *ModExpr) { |
13806 | UsageInfo &UI = UsageMap[O]; |
13807 | |
13808 | checkUsage(O, UI, ModExpr, UK_ModAsValue, true); |
13809 | checkUsage(O, UI, ModExpr, UK_Use, false); |
13810 | } |
13811 | |
13812 | void notePostMod(Object O, const Expr *ModExpr, UsageKind UK) { |
13813 | UsageInfo &UI = UsageMap[O]; |
13814 | checkUsage(O, UI, ModExpr, UK_ModAsSideEffect, |
13815 | true); |
13816 | addUsage(O, UI, ModExpr, UK); |
13817 | } |
13818 | |
13819 | public: |
13820 | SequenceChecker(Sema &S, const Expr *E, |
13821 | SmallVectorImpl<const Expr *> &WorkList) |
13822 | : Base(S.Context), SemaRef(S), Region(Tree.root()), WorkList(WorkList) { |
13823 | Visit(E); |
13824 | |
13825 | |
13826 | (void)this->WorkList; |
13827 | } |
13828 | |
13829 | void VisitStmt(const Stmt *S) { |
13830 | |
13831 | } |
13832 | |
13833 | void VisitExpr(const Expr *E) { |
13834 | |
13835 | Base::VisitStmt(E); |
13836 | } |
13837 | |
13838 | void VisitCastExpr(const CastExpr *E) { |
13839 | Object O = Object(); |
13840 | if (E->getCastKind() == CK_LValueToRValue) |
13841 | O = getObject(E->getSubExpr(), false); |
13842 | |
13843 | if (O) |
13844 | notePreUse(O, E); |
13845 | VisitExpr(E); |
13846 | if (O) |
13847 | notePostUse(O, E); |
13848 | } |
13849 | |
13850 | void VisitSequencedExpressions(const Expr *SequencedBefore, |
13851 | const Expr *SequencedAfter) { |
13852 | SequenceTree::Seq BeforeRegion = Tree.allocate(Region); |
13853 | SequenceTree::Seq AfterRegion = Tree.allocate(Region); |
13854 | SequenceTree::Seq OldRegion = Region; |
13855 | |
13856 | { |
13857 | SequencedSubexpression SeqBefore(*this); |
13858 | Region = BeforeRegion; |
13859 | Visit(SequencedBefore); |
13860 | } |
13861 | |
13862 | Region = AfterRegion; |
13863 | Visit(SequencedAfter); |
13864 | |
13865 | Region = OldRegion; |
13866 | |
13867 | Tree.merge(BeforeRegion); |
13868 | Tree.merge(AfterRegion); |
13869 | } |
13870 | |
13871 | void VisitArraySubscriptExpr(const ArraySubscriptExpr *ASE) { |
13872 | |
13873 | |
13874 | |
13875 | if (SemaRef.getLangOpts().CPlusPlus17) |
13876 | VisitSequencedExpressions(ASE->getLHS(), ASE->getRHS()); |
13877 | else { |
13878 | Visit(ASE->getLHS()); |
13879 | Visit(ASE->getRHS()); |
13880 | } |
13881 | } |
13882 | |
13883 | void VisitBinPtrMemD(const BinaryOperator *BO) { VisitBinPtrMem(BO); } |
13884 | void VisitBinPtrMemI(const BinaryOperator *BO) { VisitBinPtrMem(BO); } |
13885 | void VisitBinPtrMem(const BinaryOperator *BO) { |
13886 | |
13887 | |
13888 | |
13889 | if (SemaRef.getLangOpts().CPlusPlus17) |
13890 | VisitSequencedExpressions(BO->getLHS(), BO->getRHS()); |
13891 | else { |
13892 | Visit(BO->getLHS()); |
13893 | Visit(BO->getRHS()); |
13894 | } |
13895 | } |
13896 | |
13897 | void VisitBinShl(const BinaryOperator *BO) { VisitBinShlShr(BO); } |
13898 | void VisitBinShr(const BinaryOperator *BO) { VisitBinShlShr(BO); } |
13899 | void VisitBinShlShr(const BinaryOperator *BO) { |
13900 | |
13901 | |
13902 | if (SemaRef.getLangOpts().CPlusPlus17) |
13903 | VisitSequencedExpressions(BO->getLHS(), BO->getRHS()); |
13904 | else { |
13905 | Visit(BO->getLHS()); |
13906 | Visit(BO->getRHS()); |
13907 | } |
13908 | } |
13909 | |
13910 | void VisitBinComma(const BinaryOperator *BO) { |
13911 | |
13912 | |
13913 | |
13914 | |
13915 | VisitSequencedExpressions(BO->getLHS(), BO->getRHS()); |
13916 | } |
13917 | |
13918 | void VisitBinAssign(const BinaryOperator *BO) { |
13919 | SequenceTree::Seq RHSRegion; |
13920 | SequenceTree::Seq LHSRegion; |
13921 | if (SemaRef.getLangOpts().CPlusPlus17) { |
13922 | RHSRegion = Tree.allocate(Region); |
13923 | LHSRegion = Tree.allocate(Region); |
13924 | } else { |
13925 | RHSRegion = Region; |
13926 | LHSRegion = Region; |
13927 | } |
13928 | SequenceTree::Seq OldRegion = Region; |
13929 | |
13930 | |
13931 | |
13932 | |
13933 | |
13934 | |
13935 | |
13936 | Object O = getObject(BO->getLHS(), true); |
13937 | if (O) |
13938 | notePreMod(O, BO); |
13939 | |
13940 | if (SemaRef.getLangOpts().CPlusPlus17) { |
13941 | |
13942 | |
13943 | { |
13944 | SequencedSubexpression SeqBefore(*this); |
13945 | Region = RHSRegion; |
13946 | Visit(BO->getRHS()); |
13947 | } |
13948 | |
13949 | Region = LHSRegion; |
13950 | Visit(BO->getLHS()); |
13951 | |
13952 | if (O && isa<CompoundAssignOperator>(BO)) |
13953 | notePostUse(O, BO); |
13954 | |
13955 | } else { |
13956 | |
13957 | Region = LHSRegion; |
13958 | Visit(BO->getLHS()); |
13959 | |
13960 | if (O && isa<CompoundAssignOperator>(BO)) |
13961 | notePostUse(O, BO); |
13962 | |
13963 | Region = RHSRegion; |
13964 | Visit(BO->getRHS()); |
13965 | } |
13966 | |
13967 | |
13968 | |
13969 | |
13970 | |
13971 | Region = OldRegion; |
13972 | if (O) |
13973 | notePostMod(O, BO, |
13974 | SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue |
13975 | : UK_ModAsSideEffect); |
13976 | if (SemaRef.getLangOpts().CPlusPlus17) { |
13977 | Tree.merge(RHSRegion); |
13978 | Tree.merge(LHSRegion); |
13979 | } |
13980 | } |
13981 | |
13982 | void VisitCompoundAssignOperator(const CompoundAssignOperator *CAO) { |
13983 | VisitBinAssign(CAO); |
13984 | } |
13985 | |
13986 | void VisitUnaryPreInc(const UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } |
13987 | void VisitUnaryPreDec(const UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } |
13988 | void VisitUnaryPreIncDec(const UnaryOperator *UO) { |
13989 | Object O = getObject(UO->getSubExpr(), true); |
13990 | if (!O) |
13991 | return VisitExpr(UO); |
13992 | |
13993 | notePreMod(O, UO); |
13994 | Visit(UO->getSubExpr()); |
13995 | |
13996 | |
13997 | notePostMod(O, UO, |
13998 | SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue |
13999 | : UK_ModAsSideEffect); |
14000 | } |
14001 | |
14002 | void VisitUnaryPostInc(const UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } |
14003 | void VisitUnaryPostDec(const UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } |
14004 | void VisitUnaryPostIncDec(const UnaryOperator *UO) { |
14005 | Object O = getObject(UO->getSubExpr(), true); |
14006 | if (!O) |
14007 | return VisitExpr(UO); |
14008 | |
14009 | notePreMod(O, UO); |
14010 | Visit(UO->getSubExpr()); |
14011 | notePostMod(O, UO, UK_ModAsSideEffect); |
14012 | } |
14013 | |
14014 | void VisitBinLOr(const BinaryOperator *BO) { |
14015 | |
14016 | |
14017 | |
14018 | |
14019 | |
14020 | SequenceTree::Seq LHSRegion = Tree.allocate(Region); |
14021 | SequenceTree::Seq RHSRegion = Tree.allocate(Region); |
14022 | SequenceTree::Seq OldRegion = Region; |
14023 | |
14024 | EvaluationTracker Eval(*this); |
14025 | { |
14026 | SequencedSubexpression Sequenced(*this); |
14027 | Region = LHSRegion; |
14028 | Visit(BO->getLHS()); |
14029 | } |
14030 | |
14031 | |
14032 | |
14033 | |
14034 | bool EvalResult = false; |
14035 | bool EvalOK = Eval.evaluate(BO->getLHS(), EvalResult); |
14036 | bool ShouldVisitRHS = !EvalOK || (EvalOK && !EvalResult); |
14037 | if (ShouldVisitRHS) { |
14038 | Region = RHSRegion; |
14039 | Visit(BO->getRHS()); |
14040 | } |
14041 | |
14042 | Region = OldRegion; |
14043 | Tree.merge(LHSRegion); |
14044 | Tree.merge(RHSRegion); |
14045 | } |
14046 | |
14047 | void VisitBinLAnd(const BinaryOperator *BO) { |
14048 | |
14049 | |
14050 | |
14051 | |
14052 | |
14053 | SequenceTree::Seq LHSRegion = Tree.allocate(Region); |
14054 | SequenceTree::Seq RHSRegion = Tree.allocate(Region); |
14055 | SequenceTree::Seq OldRegion = Region; |
14056 | |
14057 | EvaluationTracker Eval(*this); |
14058 | { |
14059 | SequencedSubexpression Sequenced(*this); |
14060 | Region = LHSRegion; |
14061 | Visit(BO->getLHS()); |
14062 | } |
14063 | |
14064 | |
14065 | |
14066 | bool EvalResult = false; |
14067 | bool EvalOK = Eval.evaluate(BO->getLHS(), EvalResult); |
14068 | bool ShouldVisitRHS = !EvalOK || (EvalOK && EvalResult); |
14069 | if (ShouldVisitRHS) { |
14070 | Region = RHSRegion; |
14071 | Visit(BO->getRHS()); |
14072 | } |
14073 | |
14074 | Region = OldRegion; |
14075 | Tree.merge(LHSRegion); |
14076 | Tree.merge(RHSRegion); |
14077 | } |
14078 | |
14079 | void VisitAbstractConditionalOperator(const AbstractConditionalOperator *CO) { |
14080 | |
14081 | |
14082 | |
14083 | |
14084 | SequenceTree::Seq ConditionRegion = Tree.allocate(Region); |
14085 | |
14086 | |
14087 | |
14088 | |
14089 | |
14090 | |
14091 | |
14092 | |
14093 | |
14094 | |
14095 | |
14096 | |
14097 | |
14098 | |
14099 | |
14100 | SequenceTree::Seq TrueRegion = Tree.allocate(Region); |
14101 | SequenceTree::Seq FalseRegion = Tree.allocate(Region); |
14102 | SequenceTree::Seq OldRegion = Region; |
14103 | |
14104 | EvaluationTracker Eval(*this); |
14105 | { |
14106 | SequencedSubexpression Sequenced(*this); |
14107 | Region = ConditionRegion; |
14108 | Visit(CO->getCond()); |
14109 | } |
14110 | |
14111 | |
14112 | |
14113 | |
14114 | |
14115 | |
14116 | |
14117 | bool EvalResult = false; |
14118 | bool EvalOK = Eval.evaluate(CO->getCond(), EvalResult); |
14119 | bool ShouldVisitTrueExpr = !EvalOK || (EvalOK && EvalResult); |
14120 | bool ShouldVisitFalseExpr = !EvalOK || (EvalOK && !EvalResult); |
14121 | if (ShouldVisitTrueExpr) { |
14122 | Region = TrueRegion; |
14123 | Visit(CO->getTrueExpr()); |
14124 | } |
14125 | if (ShouldVisitFalseExpr) { |
14126 | Region = FalseRegion; |
14127 | Visit(CO->getFalseExpr()); |
14128 | } |
14129 | |
14130 | Region = OldRegion; |
14131 | Tree.merge(ConditionRegion); |
14132 | Tree.merge(TrueRegion); |
14133 | Tree.merge(FalseRegion); |
14134 | } |
14135 | |
14136 | void VisitCallExpr(const CallExpr *CE) { |
14137 | |
14138 | |
14139 | if (CE->isUnevaluatedBuiltinCall(Context)) |
14140 | return; |
14141 | |
14142 | |
14143 | |
14144 | |
14145 | |
14146 | |
14147 | |
14148 | SequencedSubexpression Sequenced(*this); |
14149 | SemaRef.runWithSufficientStackSpace(CE->getExprLoc(), [&] { |
14150 | |
14151 | |
14152 | |
14153 | SequenceTree::Seq CalleeRegion; |
14154 | SequenceTree::Seq OtherRegion; |
14155 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14156 | CalleeRegion = Tree.allocate(Region); |
14157 | OtherRegion = Tree.allocate(Region); |
14158 | } else { |
14159 | CalleeRegion = Region; |
14160 | OtherRegion = Region; |
14161 | } |
14162 | SequenceTree::Seq OldRegion = Region; |
14163 | |
14164 | |
14165 | Region = CalleeRegion; |
14166 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14167 | SequencedSubexpression Sequenced(*this); |
14168 | Visit(CE->getCallee()); |
14169 | } else { |
14170 | Visit(CE->getCallee()); |
14171 | } |
14172 | |
14173 | |
14174 | Region = OtherRegion; |
14175 | for (const Expr *Argument : CE->arguments()) |
14176 | Visit(Argument); |
14177 | |
14178 | Region = OldRegion; |
14179 | if (SemaRef.getLangOpts().CPlusPlus17) { |
14180 | Tree.merge(CalleeRegion); |
14181 | Tree.merge(OtherRegion); |
14182 | } |
14183 | }); |
14184 | } |
14185 | |
14186 | void VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *CXXOCE) { |
14187 | |
14188 | |
14189 | |
14190 | |
14191 | |
14192 | |
14193 | |
14194 | |
14195 | |
14196 | |
14197 | if (!SemaRef.getLangOpts().CPlusPlus17 || |
14198 | (CXXOCE->getNumArgs() != 2 && CXXOCE->getOperator() != OO_Call)) |
14199 | return VisitCallExpr(CXXOCE); |
14200 | |
14201 | enum { |
14202 | NoSequencing, |
14203 | LHSBeforeRHS, |
14204 | RHSBeforeLHS, |
14205 | LHSBeforeRest |
14206 | } SequencingKind; |
14207 | switch (CXXOCE->getOperator()) { |
14208 | case OO_Equal: |
14209 | case OO_PlusEqual: |
14210 | case OO_MinusEqual: |
14211 | case OO_StarEqual: |
14212 | case OO_SlashEqual: |
14213 | case OO_PercentEqual: |
14214 | case OO_CaretEqual: |
14215 | case OO_AmpEqual: |
14216 | case OO_PipeEqual: |
14217 | case OO_LessLessEqual: |
14218 | case OO_GreaterGreaterEqual: |
14219 | SequencingKind = RHSBeforeLHS; |
14220 | break; |
14221 | |
14222 | case OO_LessLess: |
14223 | case OO_GreaterGreater: |
14224 | case OO_AmpAmp: |
14225 | case OO_PipePipe: |
14226 | case OO_Comma: |
14227 | case OO_ArrowStar: |
14228 | case OO_Subscript: |
14229 | SequencingKind = LHSBeforeRHS; |
14230 | break; |
14231 | |
14232 | case OO_Call: |
14233 | SequencingKind = LHSBeforeRest; |
14234 | break; |
14235 | |
14236 | default: |
14237 | SequencingKind = NoSequencing; |
14238 | break; |
14239 | } |
14240 | |
14241 | if (SequencingKind == NoSequencing) |
14242 | return VisitCallExpr(CXXOCE); |
14243 | |
14244 | |
14245 | SequencedSubexpression Sequenced(*this); |
14246 | |
14247 | SemaRef.runWithSufficientStackSpace(CXXOCE->getExprLoc(), [&] { |
14248 | assert(SemaRef.getLangOpts().CPlusPlus17 && |
14249 | "Should only get there with C++17 and above!"); |
14250 | assert((CXXOCE->getNumArgs() == 2 || CXXOCE->getOperator() == OO_Call) && |
14251 | "Should only get there with an overloaded binary operator" |
14252 | " or an overloaded call operator!"); |
14253 | |
14254 | if (SequencingKind == LHSBeforeRest) { |
14255 | assert(CXXOCE->getOperator() == OO_Call && |
14256 | "We should only have an overloaded call operator here!"); |
14257 | |
14258 | |
14259 | |
14260 | |
14261 | |
14262 | |
14263 | |
14264 | |
14265 | SequenceTree::Seq PostfixExprRegion = Tree.allocate(Region); |
14266 | SequenceTree::Seq ArgsRegion = Tree.allocate(Region); |
14267 | SequenceTree::Seq OldRegion = Region; |
14268 | |
14269 | assert(CXXOCE->getNumArgs() >= 1 && |
14270 | "An overloaded call operator must have at least one argument" |
14271 | " for the postfix-expression!"); |
14272 | const Expr *PostfixExpr = CXXOCE->getArgs()[0]; |
14273 | llvm::ArrayRef<const Expr *> Args(CXXOCE->getArgs() + 1, |
14274 | CXXOCE->getNumArgs() - 1); |
14275 | |
14276 | |
14277 | { |
14278 | Region = PostfixExprRegion; |
14279 | SequencedSubexpression Sequenced(*this); |
14280 | Visit(PostfixExpr); |
14281 | } |
14282 | |
14283 | |
14284 | Region = ArgsRegion; |
14285 | for (const Expr *Arg : Args) |
14286 | Visit(Arg); |
14287 | |
14288 | Region = OldRegion; |
14289 | Tree.merge(PostfixExprRegion); |
14290 | Tree.merge(ArgsRegion); |
14291 | } else { |
14292 | assert(CXXOCE->getNumArgs() == 2 && |
14293 | "Should only have two arguments here!"); |
14294 | assert((SequencingKind == LHSBeforeRHS || |
14295 | SequencingKind == RHSBeforeLHS) && |
14296 | "Unexpected sequencing kind!"); |
14297 | |
14298 | |
14299 | |
14300 | const Expr *E1 = CXXOCE->getArg(0); |
14301 | const Expr *E2 = CXXOCE->getArg(1); |
14302 | if (SequencingKind == RHSBeforeLHS) |
14303 | std::swap(E1, E2); |
14304 | |
14305 | return VisitSequencedExpressions(E1, E2); |
14306 | } |
14307 | }); |
14308 | } |
14309 | |
14310 | void VisitCXXConstructExpr(const CXXConstructExpr *CCE) { |
14311 | |
14312 | SequencedSubexpression Sequenced(*this); |
14313 | |
14314 | if (!CCE->isListInitialization()) |
14315 | return VisitExpr(CCE); |
14316 | |
14317 | |
14318 | SmallVector<SequenceTree::Seq, 32> Elts; |
14319 | SequenceTree::Seq Parent = Region; |
14320 | for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(), |
14321 | E = CCE->arg_end(); |
14322 | I != E; ++I) { |
14323 | Region = Tree.allocate(Parent); |
14324 | Elts.push_back(Region); |
14325 | Visit(*I); |
14326 | } |
14327 | |
14328 | |
14329 | Region = Parent; |
14330 | for (unsigned I = 0; I < Elts.size(); ++I) |
14331 | Tree.merge(Elts[I]); |
14332 | } |
14333 | |
14334 | void VisitInitListExpr(const InitListExpr *ILE) { |
14335 | if (!SemaRef.getLangOpts().CPlusPlus11) |
14336 | return VisitExpr(ILE); |
14337 | |
14338 | |
14339 | SmallVector<SequenceTree::Seq, 32> Elts; |
14340 | SequenceTree::Seq Parent = Region; |
14341 | for (unsigned I = 0; I < ILE->getNumInits(); ++I) { |
14342 | const Expr *E = ILE->getInit(I); |
14343 | if (!E) |
14344 | continue; |
14345 | Region = Tree.allocate(Parent); |
14346 | Elts.push_back(Region); |
14347 | Visit(E); |
14348 | } |
14349 | |
14350 | |
14351 | Region = Parent; |
14352 | for (unsigned I = 0; I < Elts.size(); ++I) |
14353 | Tree.merge(Elts[I]); |
14354 | } |
14355 | }; |
14356 | |
14357 | } |
14358 | |
14359 | void Sema::CheckUnsequencedOperations(const Expr *E) { |
14360 | SmallVector<const Expr *, 8> WorkList; |
14361 | WorkList.push_back(E); |
14362 | while (!WorkList.empty()) { |
14363 | const Expr *Item = WorkList.pop_back_val(); |
14364 | SequenceChecker(*this, Item, WorkList); |
14365 | } |
14366 | } |
14367 | |
14368 | void Sema::CheckCompletedExpr(Expr *E, SourceLocation CheckLoc, |
14369 | bool IsConstexpr) { |
14370 | llvm::SaveAndRestore<bool> ConstantContext( |
14371 | isConstantEvaluatedOverride, IsConstexpr || isa<ConstantExpr>(E)); |
14372 | CheckImplicitConversions(E, CheckLoc); |
14373 | if (!E->isInstantiationDependent()) |
14374 | CheckUnsequencedOperations(E); |
14375 | if (!IsConstexpr && !E->isValueDependent()) |
14376 | CheckForIntOverflow(E); |
14377 | DiagnoseMisalignedMembers(); |
14378 | } |
14379 | |
14380 | void Sema::CheckBitFieldInitialization(SourceLocation InitLoc, |
14381 | FieldDecl *BitField, |
14382 | Expr *Init) { |
14383 | (void) AnalyzeBitFieldAssignment(*this, BitField, Init, InitLoc); |
14384 | } |
14385 | |
14386 | static void diagnoseArrayStarInParamType(Sema &S, QualType PType, |
14387 | SourceLocation Loc) { |
14388 | if (!PType->isVariablyModifiedType()) |
14389 | return; |
14390 | if (const auto *PointerTy = dyn_cast<PointerType>(PType)) { |
14391 | diagnoseArrayStarInParamType(S, PointerTy->getPointeeType(), Loc); |
14392 | return; |
14393 | } |
14394 | if (const auto *ReferenceTy = dyn_cast<ReferenceType>(PType)) { |
14395 | diagnoseArrayStarInParamType(S, ReferenceTy->getPointeeType(), Loc); |
14396 | return; |
14397 | } |
14398 | if (const auto *ParenTy = dyn_cast<ParenType>(PType)) { |
14399 | diagnoseArrayStarInParamType(S, ParenTy->getInnerType(), Loc); |
14400 | return; |
14401 | } |
14402 | |
14403 | const ArrayType *AT = S.Context.getAsArrayType(PType); |
14404 | if (!AT) |
14405 | return; |
14406 | |
14407 | if (AT->getSizeModifier() != ArrayType::Star) { |
14408 | diagnoseArrayStarInParamType(S, AT->getElementType(), Loc); |
14409 | return; |
14410 | } |
14411 | |
14412 | S.Diag(Loc, diag::err_array_star_in_function_definition); |
14413 | } |
14414 | |
14415 | |
14416 | |
14417 | |
14418 | |
14419 | |
14420 | bool Sema::CheckParmsForFunctionDef(ArrayRef<ParmVarDecl *> Parameters, |
14421 | bool CheckParameterNames) { |
14422 | bool HasInvalidParm = false; |
14423 | for (ParmVarDecl *Param : Parameters) { |
14424 | |
14425 | |
14426 | |
14427 | |
14428 | |
14429 | if (!Param->isInvalidDecl() && |
14430 | RequireCompleteType(Param->getLocation(), Param->getType(), |
14431 | diag::err_typecheck_decl_incomplete_type)) { |
14432 | Param->setInvalidDecl(); |
14433 | HasInvalidParm = true; |
14434 | } |
14435 | |
14436 | |
14437 | |
14438 | if (CheckParameterNames && Param->getIdentifier() == nullptr && |
14439 | !Param->isImplicit() && !getLangOpts().CPlusPlus) { |
14440 | |
14441 | if (!getLangOpts().C2x) |
14442 | Diag(Param->getLocation(), diag::ext_parameter_name_omitted_c2x); |
14443 | } |
14444 | |
14445 | |
14446 | |
14447 | |
14448 | |
14449 | |
14450 | QualType PType = Param->getOriginalType(); |
14451 | |
14452 | |
14453 | diagnoseArrayStarInParamType(*this, PType, Param->getLocation()); |
14454 | |
14455 | |
14456 | |
14457 | |
14458 | if (!Param->isInvalidDecl()) { |
14459 | if (CXXRecordDecl *ClassDecl = Param->getType()->getAsCXXRecordDecl()) { |
14460 | if (!ClassDecl->isInvalidDecl() && |
14461 | !ClassDecl->hasIrrelevantDestructor() && |
14462 | !ClassDecl->isDependentContext() && |
14463 | ClassDecl->isParamDestroyedInCallee()) { |
14464 | CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); |
14465 | MarkFunctionReferenced(Param->getLocation(), Destructor); |
14466 | DiagnoseUseOfDecl(Destructor, Param->getLocation()); |
14467 | } |
14468 | } |
14469 | } |
14470 | |
14471 | |
14472 | |
14473 | |
14474 | |
14475 | if (const auto *Attr = Param->getAttr<PassObjectSizeAttr>()) |
14476 | if (!Param->getType().isConstQualified()) |
14477 | Diag(Param->getLocation(), diag::err_attribute_pointers_only) |
14478 | << Attr->getSpelling() << 1; |
14479 | |
14480 | |
14481 | if (LangOpts.CPlusPlus && !Param->isInvalidDecl()) { |
14482 | |
14483 | |
14484 | DeclContext *DC = Param->getDeclContext(); |
14485 | if (DC && DC->isFunctionOrMethod()) { |
14486 | if (auto *RD = dyn_cast<CXXRecordDecl>(DC->getParent())) |
14487 | CheckShadowInheritedFields(Param->getLocation(), Param->getDeclName(), |
14488 | RD, false); |
14489 | } |
14490 | } |
14491 | } |
14492 | |
14493 | return HasInvalidParm; |
14494 | } |
14495 | |
14496 | Optional<std::pair<CharUnits, CharUnits>> |
14497 | static getBaseAlignmentAndOffsetFromPtr(const Expr *E, ASTContext &Ctx); |
14498 | |
14499 | |
14500 | |
14501 | |
14502 | static std::pair<CharUnits, CharUnits> |
14503 | getDerivedToBaseAlignmentAndOffset(const CastExpr *CE, QualType DerivedType, |
14504 | CharUnits BaseAlignment, CharUnits Offset, |
14505 | ASTContext &Ctx) { |
14506 | for (auto PathI = CE->path_begin(), PathE = CE->path_end(); PathI != PathE; |
14507 | ++PathI) { |
14508 | const CXXBaseSpecifier *Base = *PathI; |
14509 | const CXXRecordDecl *BaseDecl = Base->getType()->getAsCXXRecordDecl(); |
14510 | if (Base->isVirtual()) { |
14511 | |
14512 | |
14513 | |
14514 | |
14515 | CharUnits NonVirtualAlignment = |
14516 | Ctx.getASTRecordLayout(BaseDecl).getNonVirtualAlignment(); |
14517 | BaseAlignment = std::min(BaseAlignment, NonVirtualAlignment); |
14518 | Offset = CharUnits::Zero(); |
14519 | } else { |
14520 | const ASTRecordLayout &RL = |
14521 | Ctx.getASTRecordLayout(DerivedType->getAsCXXRecordDecl()); |
14522 | Offset += RL.getBaseClassOffset(BaseDecl); |
14523 | } |
14524 | DerivedType = Base->getType(); |
14525 | } |
14526 | |
14527 | return std::make_pair(BaseAlignment, Offset); |
14528 | } |
14529 | |
14530 | |
14531 | static Optional<std::pair<CharUnits, CharUnits>> |
14532 | getAlignmentAndOffsetFromBinAddOrSub(const Expr *PtrE, const Expr *IntE, |
14533 | bool IsSub, ASTContext &Ctx) { |
14534 | QualType PointeeType = PtrE->getType()->getPointeeType(); |
14535 | |
14536 | if (!PointeeType->isConstantSizeType()) |
14537 | return llvm::None; |
14538 | |
14539 | auto P = getBaseAlignmentAndOffsetFromPtr(PtrE, Ctx); |
14540 | |
14541 | if (!P) |
14542 | return llvm::None; |
14543 | |
14544 | CharUnits EltSize = Ctx.getTypeSizeInChars(PointeeType); |
14545 | if (Optional<llvm::APSInt> IdxRes = IntE->getIntegerConstantExpr(Ctx)) { |
14546 | CharUnits Offset = EltSize * IdxRes->getExtValue(); |
14547 | if (IsSub) |
14548 | Offset = -Offset; |
14549 | return std::make_pair(P->first, P->second + Offset); |
14550 | } |
14551 | |
14552 | |
14553 | |
14554 | |
14555 | return std::make_pair( |
14556 | P->first.alignmentAtOffset(P->second).alignmentAtOffset(EltSize), |
14557 | CharUnits::Zero()); |
14558 | } |
14559 | |
14560 | |
14561 | |
14562 | Optional<std::pair<CharUnits, CharUnits>> |
14563 | static getBaseAlignmentAndOffsetFromLValue(const Expr *E, ASTContext &Ctx) { |
14564 | E = E->IgnoreParens(); |
14565 | switch (E->getStmtClass()) { |
14566 | default: |
14567 | break; |
14568 | case Stmt::CStyleCastExprClass: |
14569 | case Stmt::CXXStaticCastExprClass: |
14570 | case Stmt::ImplicitCastExprClass: { |
14571 | auto *CE = cast<CastExpr>(E); |
14572 | const Expr *From = CE->getSubExpr(); |
14573 | switch (CE->getCastKind()) { |
14574 | default: |
14575 | break; |
14576 | case CK_NoOp: |
14577 | return getBaseAlignmentAndOffsetFromLValue(From, Ctx); |
14578 | case CK_UncheckedDerivedToBase: |
14579 | case CK_DerivedToBase: { |
14580 | auto P = getBaseAlignmentAndOffsetFromLValue(From, Ctx); |
14581 | if (!P) |
14582 | break; |
14583 | return getDerivedToBaseAlignmentAndOffset(CE, From->getType(), P->first, |
14584 | P->second, Ctx); |
14585 | } |
14586 | } |
14587 | break; |
14588 | } |
14589 | case Stmt::ArraySubscriptExprClass: { |
14590 | auto *ASE = cast<ArraySubscriptExpr>(E); |
14591 | return getAlignmentAndOffsetFromBinAddOrSub(ASE->getBase(), ASE->getIdx(), |
14592 | false, Ctx); |
14593 | } |
14594 | case Stmt::DeclRefExprClass: { |
14595 | if (auto *VD = dyn_cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl())) { |
14596 | |
14597 | |
14598 | if (!VD->getType()->isReferenceType()) |
14599 | return std::make_pair(Ctx.getDeclAlign(VD), CharUnits::Zero()); |
14600 | if (VD->hasInit()) |
14601 | return getBaseAlignmentAndOffsetFromLValue(VD->getInit(), Ctx); |
14602 | } |
14603 | break; |
14604 | } |
14605 | case Stmt::MemberExprClass: { |
14606 | auto *ME = cast<MemberExpr>(E); |
14607 | auto *FD = dyn_cast<FieldDecl>(ME->getMemberDecl()); |
14608 | if (!FD || FD->getType()->isReferenceType() || |
14609 | FD->getParent()->isInvalidDecl()) |
14610 | break; |
14611 | Optional<std::pair<CharUnits, CharUnits>> P; |
14612 | if (ME->isArrow()) |
14613 | P = getBaseAlignmentAndOffsetFromPtr(ME->getBase(), Ctx); |
14614 | else |
14615 | P = getBaseAlignmentAndOffsetFromLValue(ME->getBase(), Ctx); |
14616 | if (!P) |
14617 | break; |
14618 | const ASTRecordLayout &Layout = Ctx.getASTRecordLayout(FD->getParent()); |
14619 | uint64_t Offset = Layout.getFieldOffset(FD->getFieldIndex()); |
14620 | return std::make_pair(P->first, |
14621 | P->second + CharUnits::fromQuantity(Offset)); |
14622 | } |
14623 | case Stmt::UnaryOperatorClass: { |
14624 | auto *UO = cast<UnaryOperator>(E); |
14625 | switch (UO->getOpcode()) { |
14626 | default: |
14627 | break; |
14628 | case UO_Deref: |
14629 | return getBaseAlignmentAndOffsetFromPtr(UO->getSubExpr(), Ctx); |
14630 | } |
14631 | break; |
14632 | } |
14633 | case Stmt::BinaryOperatorClass: { |
14634 | auto *BO = cast<BinaryOperator>(E); |
14635 | auto Opcode = BO->getOpcode(); |
14636 | switch (Opcode) { |
14637 | default: |
14638 | break; |
14639 | case BO_Comma: |
14640 | return getBaseAlignmentAndOffsetFromLValue(BO->getRHS(), Ctx); |
14641 | } |
14642 | break; |
14643 | } |
14644 | } |
14645 | return llvm::None; |
14646 | } |
14647 | |
14648 | |
14649 | |
14650 | Optional<std::pair<CharUnits, CharUnits>> |
14651 | static getBaseAlignmentAndOffsetFromPtr(const Expr *E, ASTContext &Ctx) { |
14652 | E = E->IgnoreParens(); |
14653 | switch (E->getStmtClass()) { |
14654 | default: |
14655 | break; |
14656 | case Stmt::CStyleCastExprClass: |
14657 | case Stmt::CXXStaticCastExprClass: |
14658 | case Stmt::ImplicitCastExprClass: { |
14659 | auto *CE = cast<CastExpr>(E); |
14660 | const Expr *From = CE->getSubExpr(); |
14661 | switch (CE->getCastKind()) { |
14662 | default: |
14663 | break; |
14664 | case CK_NoOp: |
14665 | return getBaseAlignmentAndOffsetFromPtr(From, Ctx); |
14666 | case CK_ArrayToPointerDecay: |
14667 | return getBaseAlignmentAndOffsetFromLValue(From, Ctx); |
14668 | case CK_UncheckedDerivedToBase: |
14669 | case CK_DerivedToBase: { |
14670 | auto P = getBaseAlignmentAndOffsetFromPtr(From, Ctx); |
14671 | if (!P) |
14672 | break; |
14673 | return getDerivedToBaseAlignmentAndOffset( |
14674 | CE, From->getType()->getPointeeType(), P->first, P->second, Ctx); |
14675 | } |
14676 | } |
14677 | break; |
14678 | } |
14679 | case Stmt::CXXThisExprClass: { |
14680 | auto *RD = E->getType()->getPointeeType()->getAsCXXRecordDecl(); |
14681 | CharUnits Alignment = Ctx.getASTRecordLayout(RD).getNonVirtualAlignment(); |
14682 | return std::make_pair(Alignment, CharUnits::Zero()); |
14683 | } |
14684 | case Stmt::UnaryOperatorClass: { |
14685 | auto *UO = cast<UnaryOperator>(E); |
14686 | if (UO->getOpcode() == UO_AddrOf) |
14687 | return getBaseAlignmentAndOffsetFromLValue(UO->getSubExpr(), Ctx); |
14688 | break; |
14689 | } |
14690 | case Stmt::BinaryOperatorClass: { |
14691 | auto *BO = cast<BinaryOperator>(E); |
14692 | auto Opcode = BO->getOpcode(); |
14693 | switch (Opcode) { |
14694 | default: |
14695 | break; |
14696 | case BO_Add: |
14697 | case BO_Sub: { |
14698 | const Expr *LHS = BO->getLHS(), *RHS = BO->getRHS(); |
14699 | if (Opcode == BO_Add && !RHS->getType()->isIntegralOrEnumerationType()) |
14700 | std::swap(LHS, RHS); |
14701 | return getAlignmentAndOffsetFromBinAddOrSub(LHS, RHS, Opcode == BO_Sub, |
14702 | Ctx); |
14703 | } |
14704 | case BO_Comma: |
14705 | return getBaseAlignmentAndOffsetFromPtr(BO->getRHS(), Ctx); |
14706 | } |
14707 | break; |
14708 | } |
14709 | } |
14710 | return llvm::None; |
14711 | } |
14712 | |
14713 | static CharUnits getPresumedAlignmentOfPointer(const Expr *E, Sema &S) { |
14714 | |
14715 | Optional<std::pair<CharUnits, CharUnits>> P = |
14716 | getBaseAlignmentAndOffsetFromPtr(E, S.Context); |
14717 | |
14718 | if (P) |
14719 | return P->first.alignmentAtOffset(P->second); |
14720 | |
14721 | |
14722 | return S.Context.getTypeAlignInChars(E->getType()->getPointeeType()); |
14723 | } |
14724 | |
14725 | |
14726 | |
14727 | void Sema::CheckCastAlign(Expr *Op, QualType T, SourceRange TRange) { |
14728 | |
14729 | |
14730 | if (getDiagnostics().isIgnored(diag::warn_cast_align, TRange.getBegin())) |
14731 | return; |
14732 | |
14733 | |
14734 | if (T->isDependentType() || Op->getType()->isDependentType()) |
14735 | return; |
14736 | |
14737 | |
14738 | const PointerType *DestPtr = T->getAs<PointerType>(); |
14739 | if (!DestPtr) return; |
14740 | |
14741 | |
14742 | QualType DestPointee = DestPtr->getPointeeType(); |
14743 | if (DestPointee->isIncompleteType()) return; |
14744 | CharUnits DestAlign = Context.getTypeAlignInChars(DestPointee); |
14745 | if (DestAlign.isOne()) return; |
14746 | |
14747 | |
14748 | const PointerType *SrcPtr = Op->getType()->getAs<PointerType>(); |
14749 | if (!SrcPtr) return; |
14750 | QualType SrcPointee = SrcPtr->getPointeeType(); |
14751 | |
14752 | |
14753 | |
14754 | |
14755 | |
14756 | if (SrcPointee->isIncompleteType()) return; |
14757 | |
14758 | CharUnits SrcAlign = getPresumedAlignmentOfPointer(Op, *this); |
14759 | |
14760 | if (SrcAlign >= DestAlign) return; |
14761 | |
14762 | Diag(TRange.getBegin(), diag::warn_cast_align) |
14763 | << Op->getType() << T |
14764 | << static_cast<unsigned>(SrcAlign.getQuantity()) |
14765 | << static_cast<unsigned>(DestAlign.getQuantity()) |
14766 | << TRange << Op->getSourceRange(); |
14767 | } |
14768 | |
14769 | |
14770 | |
14771 | |
14772 | |
14773 | |
14774 | static bool IsTailPaddedMemberArray(Sema &S, const llvm::APInt &Size, |
14775 | const NamedDecl *ND) { |
14776 | if (Size != 1 || !ND) return false; |
14777 | |
14778 | const FieldDecl *FD = dyn_cast<FieldDecl>(ND); |
14779 | if (!FD) return false; |
14780 | |
14781 | |
14782 | |
14783 | |
14784 | TypeSourceInfo *TInfo = FD->getTypeSourceInfo(); |
14785 | while (TInfo) { |
14786 | TypeLoc TL = TInfo->getTypeLoc(); |
14787 | |
14788 | if (TypedefTypeLoc TTL = TL.getAs<TypedefTypeLoc>()) { |
14789 | const TypedefNameDecl *TDL = TTL.getTypedefNameDecl(); |
14790 | TInfo = TDL->getTypeSourceInfo(); |
14791 | continue; |
14792 | } |
14793 | if (ConstantArrayTypeLoc CTL = TL.getAs<ConstantArrayTypeLoc>()) { |
14794 | const Expr *SizeExpr = dyn_cast<IntegerLiteral>(CTL.getSizeExpr()); |
14795 | if (!SizeExpr || SizeExpr->getExprLoc().isMacroID()) |
14796 | return false; |
14797 | } |
14798 | break; |
14799 | } |
14800 | |
14801 | const RecordDecl *RD = dyn_cast<RecordDecl>(FD->getDeclContext()); |
14802 | if (!RD) return false; |
14803 | if (RD->isUnion()) return false; |
14804 | if (const CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) { |
14805 | if (!CRD->isStandardLayout()) return false; |
14806 | } |
14807 | |
14808 | |
14809 | const Decl *D = FD; |
14810 | while ((D = D->getNextDeclInContext())) |
14811 | if (isa<FieldDecl>(D)) |
14812 | return false; |
14813 | return true; |
14814 | } |
14815 | |
14816 | void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, |
14817 | const ArraySubscriptExpr *ASE, |
14818 | bool AllowOnePastEnd, bool IndexNegated) { |
14819 | |
14820 | if (isConstantEvaluated()) |
14821 | return; |
14822 | |
14823 | IndexExpr = IndexExpr->IgnoreParenImpCasts(); |
14824 | if (IndexExpr->isValueDependent()) |
14825 | return; |
14826 | |
14827 | const Type *EffectiveType = |
14828 | BaseExpr->getType()->getPointeeOrArrayElementType(); |
14829 | BaseExpr = BaseExpr->IgnoreParenCasts(); |
14830 | const ConstantArrayType *ArrayTy = |
14831 | Context.getAsConstantArrayType(BaseExpr->getType()); |
14832 | |
14833 | const Type *BaseType = |
14834 | ArrayTy == nullptr ? nullptr : ArrayTy->getElementType().getTypePtr(); |
14835 | bool IsUnboundedArray = (BaseType == nullptr); |
14836 | if (EffectiveType->isDependentType() || |
14837 | (!IsUnboundedArray && BaseType->isDependentType())) |
14838 | return; |
14839 | |
14840 | Expr::EvalResult Result; |
14841 | if (!IndexExpr->EvaluateAsInt(Result, Context, Expr::SE_AllowSideEffects)) |
14842 | return; |
14843 | |
14844 | llvm::APSInt index = Result.Val.getInt(); |
14845 | if (IndexNegated) { |
14846 | index.setIsUnsigned(false); |
14847 | index = -index; |
14848 | } |
14849 | |
14850 | const NamedDecl *ND = nullptr; |
14851 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |
14852 | ND = DRE->getDecl(); |
14853 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(BaseExpr)) |
14854 | ND = ME->getMemberDecl(); |
14855 | |
14856 | if (IsUnboundedArray) { |
14857 | if (index.isUnsigned() || !index.isNegative()) { |
14858 | const auto &ASTC = getASTContext(); |
14859 | unsigned AddrBits = |
14860 | ASTC.getTargetInfo().getPointerWidth(ASTC.getTargetAddressSpace( |
14861 | EffectiveType->getCanonicalTypeInternal())); |
14862 | if (index.getBitWidth() < AddrBits) |
14863 | index = index.zext(AddrBits); |
14864 | Optional<CharUnits> ElemCharUnits = |
14865 | ASTC.getTypeSizeInCharsIfKnown(EffectiveType); |
14866 | |
14867 | |
14868 | if (!ElemCharUnits) |
14869 | return; |
14870 | llvm::APInt ElemBytes(index.getBitWidth(), ElemCharUnits->getQuantity()); |
14871 | |
14872 | |
14873 | |
14874 | |
14875 | if (index.getActiveBits() <= AddrBits) { |
14876 | bool Overflow; |
14877 | llvm::APInt Product(index); |
14878 | Product += 1; |
14879 | Product = Product.umul_ov(ElemBytes, Overflow); |
14880 | if (!Overflow && Product.getActiveBits() <= AddrBits) |
14881 | return; |
14882 | } |
14883 | |
14884 | |
14885 | |
14886 | llvm::APInt MaxElems = llvm::APInt::getMaxValue(AddrBits); |
14887 | MaxElems = MaxElems.zext(std::max(AddrBits + 1, ElemBytes.getBitWidth())); |
14888 | MaxElems += 1; |
14889 | ElemBytes = ElemBytes.zextOrTrunc(MaxElems.getBitWidth()); |
14890 | MaxElems = MaxElems.udiv(ElemBytes); |
14891 | |
14892 | unsigned DiagID = |
14893 | ASE ? diag::warn_array_index_exceeds_max_addressable_bounds |
14894 | : diag::warn_ptr_arith_exceeds_max_addressable_bounds; |
14895 | |
14896 | |
14897 | |
14898 | DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr, |
14899 | PDiag(DiagID) |
14900 | << toString(index, 10, true) << AddrBits |
14901 | << (unsigned)ASTC.toBits(*ElemCharUnits) |
14902 | << toString(ElemBytes, 10, false) |
14903 | << toString(MaxElems, 10, false) |
14904 | << (unsigned)MaxElems.getLimitedValue(~0U) |
14905 | << IndexExpr->getSourceRange()); |
14906 | |
14907 | if (!ND) { |
14908 | |
14909 | while (const auto *ASE = dyn_cast<ArraySubscriptExpr>(BaseExpr)) |
14910 | BaseExpr = ASE->getBase()->IgnoreParenCasts(); |
14911 | if (const auto *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |
14912 | ND = DRE->getDecl(); |
14913 | if (const auto *ME = dyn_cast<MemberExpr>(BaseExpr)) |
14914 | ND = ME->getMemberDecl(); |
14915 | } |
14916 | |
14917 | if (ND) |
14918 | DiagRuntimeBehavior(ND->getBeginLoc(), BaseExpr, |
14919 | PDiag(diag::note_array_declared_here) << ND); |
14920 | } |
14921 | return; |
14922 | } |
14923 | |
14924 | if (index.isUnsigned() || !index.isNegative()) { |
14925 | |
14926 | |
14927 | |
14928 | |
14929 | |
14930 | |
14931 | if (BaseType->isIncompleteType()) |
14932 | return; |
14933 | |
14934 | llvm::APInt size = ArrayTy->getSize(); |
14935 | if (!size.isStrictlyPositive()) |
14936 | return; |
14937 | |
14938 | if (BaseType != EffectiveType) { |
14939 | |
14940 | uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType); |
14941 | uint64_t array_typesize = Context.getTypeSize(BaseType); |
14942 | |
14943 | if (!ptrarith_typesize) ptrarith_typesize = 1; |
14944 | if (ptrarith_typesize != array_typesize) { |
14945 | |
14946 | uint64_t ratio = array_typesize / ptrarith_typesize; |
14947 | |
14948 | |
14949 | if (ptrarith_typesize * ratio == array_typesize) |
14950 | size *= llvm::APInt(size.getBitWidth(), ratio); |
14951 | } |
14952 | } |
14953 | |
14954 | if (size.getBitWidth() > index.getBitWidth()) |
14955 | index = index.zext(size.getBitWidth()); |
14956 | else if (size.getBitWidth() < index.getBitWidth()) |
14957 | size = size.zext(index.getBitWidth()); |
14958 | |
14959 | |
14960 | |
14961 | |
14962 | |
14963 | if (AllowOnePastEnd ? index.ule(size) : index.ult(size)) |
14964 | return; |
14965 | |
14966 | |
14967 | |
14968 | |
14969 | if (IsTailPaddedMemberArray(*this, size, ND)) |
14970 | return; |
14971 | |
14972 | |
14973 | |
14974 | |
14975 | if (ASE) { |
14976 | SourceLocation RBracketLoc = SourceMgr.getSpellingLoc( |
14977 | ASE->getRBracketLoc()); |
14978 | if (SourceMgr.isInSystemHeader(RBracketLoc)) { |
14979 | SourceLocation IndexLoc = |
14980 | SourceMgr.getSpellingLoc(IndexExpr->getBeginLoc()); |
14981 | if (SourceMgr.isWrittenInSameFile(RBracketLoc, IndexLoc)) |
14982 | return; |
14983 | } |
14984 | } |
14985 | |
14986 | unsigned DiagID = ASE ? diag::warn_array_index_exceeds_bounds |
14987 | : diag::warn_ptr_arith_exceeds_bounds; |
14988 | |
14989 | DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr, |
14990 | PDiag(DiagID) << toString(index, 10, true) |
14991 | << toString(size, 10, true) |
14992 | << (unsigned)size.getLimitedValue(~0U) |
14993 | << IndexExpr->getSourceRange()); |
14994 | } else { |
14995 | unsigned DiagID = diag::warn_array_index_precedes_bounds; |
14996 | if (!ASE) { |
14997 | DiagID = diag::warn_ptr_arith_precedes_bounds; |
14998 | if (index.isNegative()) index = -index; |
14999 | } |
15000 | |
15001 | DiagRuntimeBehavior(BaseExpr->getBeginLoc(), BaseExpr, |
15002 | PDiag(DiagID) << toString(index, 10, true) |
15003 | << IndexExpr->getSourceRange()); |
15004 | } |
15005 | |
15006 | if (!ND) { |
15007 | |
15008 | while (const auto *ASE = dyn_cast<ArraySubscriptExpr>(BaseExpr)) |
15009 | BaseExpr = ASE->getBase()->IgnoreParenCasts(); |
15010 | if (const auto *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |
15011 | ND = DRE->getDecl(); |
15012 | if (const auto *ME = dyn_cast<MemberExpr>(BaseExpr)) |
15013 | ND = ME->getMemberDecl(); |
15014 | } |
15015 | |
15016 | if (ND) |
15017 | DiagRuntimeBehavior(ND->getBeginLoc(), BaseExpr, |
15018 | PDiag(diag::note_array_declared_here) << ND); |
15019 | } |
15020 | |
15021 | void Sema::CheckArrayAccess(const Expr *expr) { |
15022 | int AllowOnePastEnd = 0; |
15023 | while (expr) { |
15024 | expr = expr->IgnoreParenImpCasts(); |
15025 | switch (expr->getStmtClass()) { |
15026 | case Stmt::ArraySubscriptExprClass: { |
15027 | const ArraySubscriptExpr *ASE = cast<ArraySubscriptExpr>(expr); |
15028 | CheckArrayAccess(ASE->getBase(), ASE->getIdx(), ASE, |
15029 | AllowOnePastEnd > 0); |
15030 | expr = ASE->getBase(); |
15031 | break; |
15032 | } |
15033 | case Stmt::MemberExprClass: { |
15034 | expr = cast<MemberExpr>(expr)->getBase(); |
15035 | break; |
15036 | } |
15037 | case Stmt::OMPArraySectionExprClass: { |
15038 | const OMPArraySectionExpr *ASE = cast<OMPArraySectionExpr>(expr); |
15039 | if (ASE->getLowerBound()) |
15040 | CheckArrayAccess(ASE->getBase(), ASE->getLowerBound(), |
15041 | nullptr, AllowOnePastEnd > 0); |
15042 | return; |
15043 | } |
15044 | case Stmt::UnaryOperatorClass: { |
15045 | |
15046 | const UnaryOperator *UO = cast<UnaryOperator>(expr); |
15047 | expr = UO->getSubExpr(); |
15048 | switch (UO->getOpcode()) { |
15049 | case UO_AddrOf: |
15050 | AllowOnePastEnd++; |
15051 | break; |
15052 | case UO_Deref: |
15053 | AllowOnePastEnd--; |
15054 | break; |
15055 | default: |
15056 | return; |
15057 | } |
15058 | break; |
15059 | } |
15060 | case Stmt::ConditionalOperatorClass: { |
15061 | const ConditionalOperator *cond = cast<ConditionalOperator>(expr); |
15062 | if (const Expr *lhs = cond->getLHS()) |
15063 | CheckArrayAccess(lhs); |
15064 | if (const Expr *rhs = cond->getRHS()) |
15065 | CheckArrayAccess(rhs); |
15066 | return; |
15067 | } |
15068 | case Stmt::CXXOperatorCallExprClass: { |
15069 | const auto *OCE = cast<CXXOperatorCallExpr>(expr); |
15070 | for (const auto *Arg : OCE->arguments()) |
15071 | CheckArrayAccess(Arg); |
15072 | return; |
15073 | } |
15074 | default: |
15075 | return; |
15076 | } |
15077 | } |
15078 | } |
15079 | |
15080 | |
15081 | |
15082 | namespace { |
15083 | |
15084 | struct RetainCycleOwner { |
15085 | VarDecl *Variable = nullptr; |
15086 | SourceRange Range; |
15087 | SourceLocation Loc; |
15088 | bool Indirect = false; |
15089 | |
15090 | RetainCycleOwner() = default; |
15091 | |
15092 | void setLocsFrom(Expr *e) { |
15093 | Loc = e->getExprLoc(); |
15094 | Range = e->getSourceRange(); |
15095 | } |
15096 | }; |
15097 | |
15098 | } |
15099 | |
15100 | |
15101 | |
15102 | static bool considerVariable(VarDecl *var, Expr *ref, RetainCycleOwner &owner) { |
15103 | |
15104 | |
15105 | |
15106 | if (var->getType().getObjCLifetime() != Qualifiers::OCL_Strong) |
15107 | return false; |
15108 | |
15109 | owner.Variable = var; |
15110 | if (ref) |
15111 | owner.setLocsFrom(ref); |
15112 | return true; |
15113 | } |
15114 | |
15115 | static bool findRetainCycleOwner(Sema &S, Expr *e, RetainCycleOwner &owner) { |
15116 | while (true) { |
15117 | e = e->IgnoreParens(); |
15118 | if (CastExpr *cast = dyn_cast<CastExpr>(e)) { |
15119 | switch (cast->getCastKind()) { |
15120 | case CK_BitCast: |
15121 | case CK_LValueBitCast: |
15122 | case CK_LValueToRValue: |
15123 | case CK_ARCReclaimReturnedObject: |
15124 | e = cast->getSubExpr(); |
15125 | continue; |
15126 | |
15127 | default: |
15128 | return false; |
15129 | } |
15130 | } |
15131 | |
15132 | if (ObjCIvarRefExpr *ref = dyn_cast<ObjCIvarRefExpr>(e)) { |
15133 | ObjCIvarDecl *ivar = ref->getDecl(); |
15134 | if (ivar->getType().getObjCLifetime() != Qualifiers::OCL_Strong) |
15135 | return false; |
15136 | |
15137 | |
15138 | if (!findRetainCycleOwner(S, ref->getBase(), owner)) |
15139 | return false; |
15140 | |
15141 | if (ref->isFreeIvar()) owner.setLocsFrom(ref); |
15142 | owner.Indirect = true; |
15143 | return true; |
15144 | } |
15145 | |
15146 | if (DeclRefExpr *ref = dyn_cast<DeclRefExpr>(e)) { |
15147 | VarDecl *var = dyn_cast<VarDecl>(ref->getDecl()); |
15148 | if (!var) return false; |
15149 | return considerVariable(var, ref, owner); |
15150 | } |
15151 | |
15152 | if (MemberExpr *member = dyn_cast<MemberExpr>(e)) { |
15153 | if (member->isArrow()) return false; |
15154 | |
15155 | |
15156 | e = member->getBase(); |
15157 | continue; |
15158 | } |
15159 | |
15160 | if (PseudoObjectExpr *pseudo = dyn_cast<PseudoObjectExpr>(e)) { |
15161 | |
15162 | ObjCPropertyRefExpr *pre |
15163 | = dyn_cast<ObjCPropertyRefExpr>(pseudo->getSyntacticForm() |
15164 | ->IgnoreParens()); |
15165 | if (!pre) return false; |
15166 | if (pre->isImplicitProperty()) return false; |
15167 | ObjCPropertyDecl *property = pre->getExplicitProperty(); |
15168 | if (!property->isRetaining() && |
15169 | !(property->getPropertyIvarDecl() && |
15170 | property->getPropertyIvarDecl()->getType() |
15171 | .getObjCLifetime() == Qualifiers::OCL_Strong)) |
15172 | return false; |
15173 | |
15174 | owner.Indirect = true; |
15175 | if (pre->isSuperReceiver()) { |
15176 | owner.Variable = S.getCurMethodDecl()->getSelfDecl(); |
15177 | if (!owner.Variable) |
15178 | return false; |
15179 | owner.Loc = pre->getLocation(); |
15180 | owner.Range = pre->getSourceRange(); |
15181 | return true; |
15182 | } |
15183 | e = const_cast<Expr*>(cast<OpaqueValueExpr>(pre->getBase()) |
15184 | ->getSourceExpr()); |
15185 | continue; |
15186 | } |
15187 | |
15188 | |
15189 | |
15190 | return false; |
15191 | } |
15192 | } |
15193 | |
15194 | namespace { |
15195 | |
15196 | struct FindCaptureVisitor : EvaluatedExprVisitor<FindCaptureVisitor> { |
15197 | ASTContext &Context; |
15198 | VarDecl *Variable; |
15199 | Expr *Capturer = nullptr; |
15200 | bool VarWillBeReased = false; |
15201 | |
15202 | FindCaptureVisitor(ASTContext &Context, VarDecl *variable) |
15203 | : EvaluatedExprVisitor<FindCaptureVisitor>(Context), |
15204 | Context(Context), Variable(variable) {} |
15205 | |
15206 | void VisitDeclRefExpr(DeclRefExpr *ref) { |
15207 | if (ref->getDecl() == Variable && !Capturer) |
15208 | Capturer = ref; |
15209 | } |
15210 | |
15211 | void VisitObjCIvarRefExpr(ObjCIvarRefExpr *ref) { |
15212 | if (Capturer) return; |
15213 | Visit(ref->getBase()); |
15214 | if (Capturer && ref->isFreeIvar()) |
15215 | Capturer = ref; |
15216 | } |
15217 | |
15218 | void VisitBlockExpr(BlockExpr *block) { |
15219 | |
15220 | if (block->getBlockDecl()->capturesVariable(Variable)) |
15221 | Visit(block->getBlockDecl()->getBody()); |
15222 | } |
15223 | |
15224 | void VisitOpaqueValueExpr(OpaqueValueExpr *OVE) { |
15225 | if (Capturer) return; |
15226 | if (OVE->getSourceExpr()) |
15227 | Visit(OVE->getSourceExpr()); |
15228 | } |
15229 | |
15230 | void VisitBinaryOperator(BinaryOperator *BinOp) { |
15231 | if (!Variable || VarWillBeReased || BinOp->getOpcode() != BO_Assign) |
15232 | return; |
15233 | Expr *LHS = BinOp->getLHS(); |
15234 | if (const DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(LHS)) { |
15235 | if (DRE->getDecl() != Variable) |
15236 | return; |
15237 | if (Expr *RHS = BinOp->getRHS()) { |
15238 | RHS = RHS->IgnoreParenCasts(); |
15239 | Optional<llvm::APSInt> Value; |
15240 | VarWillBeReased = |
15241 | (RHS && (Value = RHS->getIntegerConstantExpr(Context)) && |
15242 | *Value == 0); |
15243 | } |
15244 | } |
15245 | } |
15246 | }; |
15247 | |
15248 | } |
15249 | |
15250 | |
15251 | |
15252 | static Expr *findCapturingExpr(Sema &S, Expr *e, RetainCycleOwner &owner) { |
15253 | assert(owner.Variable && owner.Loc.isValid()); |
15254 | |
15255 | e = e->IgnoreParenCasts(); |
15256 | |
15257 | |
15258 | if (ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(e)) { |
15259 | Selector Cmd = ME->getSelector(); |
15260 | if (Cmd.isUnarySelector() && Cmd.getNameForSlot(0) == "copy") { |
15261 | e = ME->getInstanceReceiver(); |
15262 | if (!e) |
15263 | return nullptr; |
15264 | e = e->IgnoreParenCasts(); |
15265 | } |
15266 | } else if (CallExpr *CE = dyn_cast<CallExpr>(e)) { |
15267 | if (CE->getNumArgs() == 1) { |
15268 | FunctionDecl *Fn = dyn_cast_or_null<FunctionDecl>(CE->getCalleeDecl()); |
15269 | if (Fn) { |
15270 | const IdentifierInfo *FnI = Fn->getIdentifier(); |
15271 | if (FnI && FnI->isStr("_Block_copy")) { |
15272 | e = CE->getArg(0)->IgnoreParenCasts(); |
15273 | } |
15274 | } |
15275 | } |
15276 | } |
15277 | |
15278 | BlockExpr *block = dyn_cast<BlockExpr>(e); |
15279 | if (!block || !block->getBlockDecl()->capturesVariable(owner.Variable)) |
15280 | return nullptr; |
15281 | |
15282 | FindCaptureVisitor visitor(S.Context, owner.Variable); |
15283 | visitor.Visit(block->getBlockDecl()->getBody()); |
15284 | return visitor.VarWillBeReased ? nullptr : visitor.Capturer; |
15285 | } |
15286 | |
15287 | static void diagnoseRetainCycle(Sema &S, Expr *capturer, |
15288 | RetainCycleOwner &owner) { |
15289 | assert(capturer); |
15290 | assert(owner.Variable && owner.Loc.isValid()); |
15291 | |
15292 | S.Diag(capturer->getExprLoc(), diag::warn_arc_retain_cycle) |
15293 | << owner.Variable << capturer->getSourceRange(); |
15294 | S.Diag(owner.Loc, diag::note_arc_retain_cycle_owner) |
15295 | << owner.Indirect << owner.Range; |
15296 | } |
15297 | |
15298 | |
15299 | |
15300 | static bool isSetterLikeSelector(Selector sel) { |
15301 | if (sel.isUnarySelector()) return false; |
15302 | |
15303 | StringRef str = sel.getNameForSlot(0); |
15304 | while (!str.empty() && str.front() == '_') str = str.substr(1); |
15305 | if (str.startswith("set")) |
15306 | str = str.substr(3); |
15307 | else if (str.startswith("add")) { |
15308 | |
15309 | if (sel.getNumArgs() == 1 && str.startswith("addOperationWithBlock")) |
15310 | return false; |
15311 | str = str.substr(3); |
15312 | } |
15313 | else |
15314 | return false; |
15315 | |
15316 | if (str.empty()) return true; |
15317 | return !isLowercase(str.front()); |
15318 | } |
15319 | |
15320 | static Optional<int> GetNSMutableArrayArgumentIndex(Sema &S, |
15321 | ObjCMessageExpr *Message) { |
15322 | bool IsMutableArray = S.NSAPIObj->isSubclassOfNSClass( |
15323 | Message->getReceiverInterface(), |
15324 | NSAPI::ClassId_NSMutableArray); |
15325 | if (!IsMutableArray) { |
15326 | return None; |
15327 | } |
15328 | |
15329 | Selector Sel = Message->getSelector(); |
15330 | |
15331 | Optional<NSAPI::NSArrayMethodKind> MKOpt = |
15332 | S.NSAPIObj->getNSArrayMethodKind(Sel); |
15333 | if (!MKOpt) { |
15334 | return None; |
15335 | } |
15336 | |
15337 | NSAPI::NSArrayMethodKind MK = *MKOpt; |
15338 | |
15339 | switch (MK) { |
15340 | case NSAPI::NSMutableArr_addObject: |
15341 | case NSAPI::NSMutableArr_insertObjectAtIndex: |
15342 | case NSAPI::NSMutableArr_setObjectAtIndexedSubscript: |
15343 | return 0; |
15344 | case NSAPI::NSMutableArr_replaceObjectAtIndex: |
15345 | return 1; |
15346 | |
15347 | default: |
15348 | return None; |
15349 | } |
15350 | |
15351 | return None; |
15352 | } |
15353 | |
15354 | static |
15355 | Optional<int> GetNSMutableDictionaryArgumentIndex(Sema &S, |
15356 | ObjCMessageExpr *Message) { |
15357 | bool IsMutableDictionary = S.NSAPIObj->isSubclassOfNSClass( |
15358 | Message->getReceiverInterface(), |
15359 | NSAPI::ClassId_NSMutableDictionary); |
15360 | if (!IsMutableDictionary) { |
15361 | return None; |
15362 | } |
15363 | |
15364 | Selector Sel = Message->getSelector(); |
15365 | |
15366 | Optional<NSAPI::NSDictionaryMethodKind> MKOpt = |
15367 | S.NSAPIObj->getNSDictionaryMethodKind(Sel); |
15368 | if (!MKOpt) { |
15369 | return None; |
15370 | } |
15371 | |
15372 | NSAPI::NSDictionaryMethodKind MK = *MKOpt; |
15373 | |
15374 | switch (MK) { |
15375 | case NSAPI::NSMutableDict_setObjectForKey: |
15376 | case NSAPI::NSMutableDict_setValueForKey: |
15377 | case NSAPI::NSMutableDict_setObjectForKeyedSubscript: |
15378 | return 0; |
15379 | |
15380 | default: |
15381 | return None; |
15382 | } |
15383 | |
15384 | return None; |
15385 | } |
15386 | |
15387 | static Optional<int> GetNSSetArgumentIndex(Sema &S, ObjCMessageExpr *Message) { |
15388 | bool IsMutableSet = S.NSAPIObj->isSubclassOfNSClass( |
15389 | Message->getReceiverInterface(), |
15390 | NSAPI::ClassId_NSMutableSet); |
15391 | |
15392 | bool IsMutableOrderedSet = S.NSAPIObj->isSubclassOfNSClass( |
15393 | Message->getReceiverInterface(), |
15394 | NSAPI::ClassId_NSMutableOrderedSet); |
15395 | if (!IsMutableSet && !IsMutableOrderedSet) { |
15396 | return None; |
15397 | } |
15398 | |
15399 | Selector Sel = Message->getSelector(); |
15400 | |
15401 | Optional<NSAPI::NSSetMethodKind> MKOpt = S.NSAPIObj->getNSSetMethodKind(Sel); |
15402 | if (!MKOpt) { |
15403 | return None; |
15404 | } |
15405 | |
15406 | NSAPI::NSSetMethodKind MK = *MKOpt; |
15407 | |
15408 | switch (MK) { |
15409 | case NSAPI::NSMutableSet_addObject: |
15410 | case NSAPI::NSOrderedSet_setObjectAtIndex: |
15411 | case NSAPI::NSOrderedSet_setObjectAtIndexedSubscript: |
15412 | case NSAPI::NSOrderedSet_insertObjectAtIndex: |
15413 | return 0; |
15414 | case NSAPI::NSOrderedSet_replaceObjectAtIndexWithObject: |
15415 | return 1; |
15416 | } |
15417 | |
15418 | return None; |
15419 | } |
15420 | |
15421 | void Sema::CheckObjCCircularContainer(ObjCMessageExpr *Message) { |
15422 | if (!Message->isInstanceMessage()) { |
15423 | return; |
15424 | } |
15425 | |
15426 | Optional<int> ArgOpt; |
15427 | |
15428 | if (!(ArgOpt = GetNSMutableArrayArgumentIndex(*this, Message)) && |
15429 | !(ArgOpt = GetNSMutableDictionaryArgumentIndex(*this, Message)) && |
15430 | !(ArgOpt = GetNSSetArgumentIndex(*this, Message))) { |
15431 | return; |
15432 | } |
15433 | |
15434 | int ArgIndex = *ArgOpt; |
15435 | |
15436 | Expr *Arg = Message->getArg(ArgIndex)->IgnoreImpCasts(); |
15437 | if (OpaqueValueExpr *OE = dyn_cast<OpaqueValueExpr>(Arg)) { |
15438 | Arg = OE->getSourceExpr()->IgnoreImpCasts(); |
15439 | } |
15440 | |
15441 | if (Message->getReceiverKind() == ObjCMessageExpr::SuperInstance) { |
15442 | if (DeclRefExpr *ArgRE = dyn_cast<DeclRefExpr>(Arg)) { |
15443 | if (ArgRE->isObjCSelfExpr()) { |
15444 | Diag(Message->getSourceRange().getBegin(), |
15445 | diag::warn_objc_circular_container) |
15446 | << ArgRE->getDecl() << StringRef("'super'"); |
15447 | } |
15448 | } |
15449 | } else { |
15450 | Expr *Receiver = Message->getInstanceReceiver()->IgnoreImpCasts(); |
15451 | |
15452 | if (OpaqueValueExpr *OE = dyn_cast<OpaqueValueExpr>(Receiver)) { |
15453 | Receiver = OE->getSourceExpr()->IgnoreImpCasts(); |
15454 | } |
15455 | |
15456 | if (DeclRefExpr *ReceiverRE = dyn_cast<DeclRefExpr>(Receiver)) { |
15457 | if (DeclRefExpr *ArgRE = dyn_cast<DeclRefExpr>(Arg)) { |
15458 | if (ReceiverRE->getDecl() == ArgRE->getDecl()) { |
15459 | ValueDecl *Decl = ReceiverRE->getDecl(); |
15460 | Diag(Message->getSourceRange().getBegin(), |
15461 | diag::warn_objc_circular_container) |
15462 | << Decl << Decl; |
15463 | if (!ArgRE->isObjCSelfExpr()) { |
15464 | Diag(Decl->getLocation(), |
15465 | diag::note_objc_circular_container_declared_here) |
15466 | << Decl; |
15467 | } |
15468 | } |
15469 | } |
15470 | } else if (ObjCIvarRefExpr *IvarRE = dyn_cast<ObjCIvarRefExpr>(Receiver)) { |
15471 | if (ObjCIvarRefExpr *IvarArgRE = dyn_cast<ObjCIvarRefExpr>(Arg)) { |
15472 | if (IvarRE->getDecl() == IvarArgRE->getDecl()) { |
15473 | ObjCIvarDecl *Decl = IvarRE->getDecl(); |
15474 | Diag(Message->getSourceRange().getBegin(), |
15475 | diag::warn_objc_circular_container) |
15476 | << Decl << Decl; |
15477 | Diag(Decl->getLocation(), |
15478 | diag::note_objc_circular_container_declared_here) |
15479 | << Decl; |
15480 | } |
15481 | } |
15482 | } |
15483 | } |
15484 | } |
15485 | |
15486 | |
15487 | void Sema::checkRetainCycles(ObjCMessageExpr *msg) { |
15488 | |
15489 | if (!msg->isInstanceMessage() || !isSetterLikeSelector(msg->getSelector())) |
15490 | return; |
15491 | |
15492 | |
15493 | RetainCycleOwner owner; |
15494 | if (msg->getReceiverKind() == ObjCMessageExpr::Instance) { |
15495 | if (!findRetainCycleOwner(*this, msg->getInstanceReceiver(), owner)) |
15496 | return; |
15497 | } else { |
15498 | assert(msg->getReceiverKind() == ObjCMessageExpr::SuperInstance); |
15499 | owner.Variable = getCurMethodDecl()->getSelfDecl(); |
15500 | owner.Loc = msg->getSuperLoc(); |
15501 | owner.Range = msg->getSuperLoc(); |
15502 | } |
15503 | |
15504 | |
15505 | const ObjCMethodDecl *MD = msg->getMethodDecl(); |
15506 | for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) { |
15507 | if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) { |
15508 | |
15509 | if (MD && MD->parameters()[i]->hasAttr<NoEscapeAttr>()) |
15510 | continue; |
15511 | return diagnoseRetainCycle(*this, capturer, owner); |
15512 | } |
15513 | } |
15514 | } |
15515 | |
15516 | |
15517 | void Sema::checkRetainCycles(Expr *receiver, Expr *argument) { |
15518 | RetainCycleOwner owner; |
15519 | if (!findRetainCycleOwner(*this, receiver, owner)) |
15520 | return; |
15521 | |
15522 | if (Expr *capturer = findCapturingExpr(*this, argument, owner)) |
15523 | diagnoseRetainCycle(*this, capturer, owner); |
15524 | } |
15525 | |
15526 | void Sema::checkRetainCycles(VarDecl *Var, Expr *Init) { |
15527 | RetainCycleOwner Owner; |
15528 | if (!considerVariable(Var, nullptr, Owner)) |
15529 | return; |
15530 | |
15531 | |
15532 | |
15533 | Owner.Loc = Var->getLocation(); |
15534 | Owner.Range = Var->getSourceRange(); |
15535 | |
15536 | if (Expr *Capturer = findCapturingExpr(*this, Init, Owner)) |
15537 | diagnoseRetainCycle(*this, Capturer, Owner); |
15538 | } |
15539 | |
15540 | static bool checkUnsafeAssignLiteral(Sema &S, SourceLocation Loc, |
15541 | Expr *RHS, bool isProperty) { |
15542 | |
15543 | |
15544 | |
15545 | RHS = RHS->IgnoreParenImpCasts(); |
15546 | |
15547 | |
15548 | |
15549 | Sema::ObjCLiteralKind Kind = S.CheckLiteralKind(RHS); |
15550 | if (Kind == Sema::LK_String || Kind == Sema::LK_None) |
15551 | return false; |
15552 | |
15553 | S.Diag(Loc, diag::warn_arc_literal_assign) |
15554 | << (unsigned) Kind |
15555 | << (isProperty ? 0 : 1) |
15556 | << RHS->getSourceRange(); |
15557 | |
15558 | return true; |
15559 | } |
15560 | |
15561 | static bool checkUnsafeAssignObject(Sema &S, SourceLocation Loc, |
15562 | Qualifiers::ObjCLifetime LT, |
15563 | Expr *RHS, bool isProperty) { |
15564 | |
15565 | while (ImplicitCastExpr *cast = dyn_cast<ImplicitCastExpr>(RHS)) { |
15566 | if (cast->getCastKind() == CK_ARCConsumeObject) { |
15567 | S.Diag(Loc, diag::warn_arc_retained_assign) |
15568 | << (LT == Qualifiers::OCL_ExplicitNone) |
15569 | << (isProperty ? 0 : 1) |
15570 | << RHS->getSourceRange(); |
15571 | return true; |
15572 | } |
15573 | RHS = cast->getSubExpr(); |
15574 | } |
15575 | |
15576 | if (LT == Qualifiers::OCL_Weak && |
15577 | checkUnsafeAssignLiteral(S, Loc, RHS, isProperty)) |
15578 | return true; |
15579 | |
15580 | return false; |
15581 | } |
15582 | |
15583 | bool Sema::checkUnsafeAssigns(SourceLocation Loc, |
15584 | QualType LHS, Expr *RHS) { |
15585 | Qualifiers::ObjCLifetime LT = LHS.getObjCLifetime(); |
15586 | |
15587 | if (LT != Qualifiers::OCL_Weak && LT != Qualifiers::OCL_ExplicitNone) |
15588 | return false; |
15589 | |
15590 | if (checkUnsafeAssignObject(*this, Loc, LT, RHS, false)) |
15591 | return true; |
15592 | |
15593 | return false; |
15594 | } |
15595 | |
15596 | void Sema::checkUnsafeExprAssigns(SourceLocation Loc, |
15597 | Expr *LHS, Expr *RHS) { |
15598 | QualType LHSType; |
15599 | |
15600 | |
15601 | ObjCPropertyRefExpr *PRE |
15602 | = dyn_cast<ObjCPropertyRefExpr>(LHS->IgnoreParens()); |
15603 | if (PRE && !PRE->isImplicitProperty()) { |
15604 | const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); |
15605 | if (PD) |
15606 | LHSType = PD->getType(); |
15607 | } |
15608 | |
15609 | if (LHSType.isNull()) |
15610 | LHSType = LHS->getType(); |
15611 | |
15612 | Qualifiers::ObjCLifetime LT = LHSType.getObjCLifetime(); |
15613 | |
15614 | if (LT == Qualifiers::OCL_Weak) { |
15615 | if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) |
15616 | getCurFunction()->markSafeWeakUse(LHS); |
15617 | } |
15618 | |
15619 | if (checkUnsafeAssigns(Loc, LHSType, RHS)) |
15620 | return; |
15621 | |
15622 | |
15623 | if (LT != Qualifiers::OCL_None) |
15624 | return; |
15625 | |
15626 | if (PRE) { |
15627 | if (PRE->isImplicitProperty()) |
15628 | return; |
15629 | const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); |
15630 | if (!PD) |
15631 | return; |
15632 | |
15633 | unsigned Attributes = PD->getPropertyAttributes(); |
15634 | if (Attributes & ObjCPropertyAttribute::kind_assign) { |
15635 | |
15636 | |
15637 | |
15638 | unsigned AsWrittenAttr = PD->getPropertyAttributesAsWritten(); |
15639 | if (!(AsWrittenAttr & ObjCPropertyAttribute::kind_assign) && |
15640 | LHSType->isObjCRetainableType()) |
15641 | return; |
15642 | |
15643 | while (ImplicitCastExpr *cast = dyn_cast<ImplicitCastExpr>(RHS)) { |
15644 | if (cast->getCastKind() == CK_ARCConsumeObject) { |
15645 | Diag(Loc, diag::warn_arc_retained_property_assign) |
15646 | << RHS->getSourceRange(); |
15647 | return; |
15648 | } |
15649 | RHS = cast->getSubExpr(); |
15650 | } |
15651 | } else if (Attributes & ObjCPropertyAttribute::kind_weak) { |
15652 | if (checkUnsafeAssignObject(*this, Loc, Qualifiers::OCL_Weak, RHS, true)) |
15653 | return; |
15654 | } |
15655 | } |
15656 | } |
15657 | |
15658 | |
15659 | |
15660 | static bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, |
15661 | SourceLocation StmtLoc, |
15662 | const NullStmt *Body) { |
15663 | |
15664 | |
15665 | |
15666 | |
15667 | |
15668 | if (Body->hasLeadingEmptyMacro()) |
15669 | return false; |
15670 | |
15671 | |
15672 | bool StmtLineInvalid; |
15673 | unsigned StmtLine = SourceMgr.getPresumedLineNumber(StmtLoc, |
15674 | &StmtLineInvalid); |
15675 | if (StmtLineInvalid) |
15676 | return false; |
15677 | |
15678 | bool BodyLineInvalid; |
15679 | unsigned BodyLine = SourceMgr.getSpellingLineNumber(Body->getSemiLoc(), |
15680 | &BodyLineInvalid); |
15681 | if (BodyLineInvalid) |
15682 | return false; |
15683 | |
15684 | |
15685 | if (StmtLine != BodyLine) |
15686 | return false; |
15687 | |
15688 | return true; |
15689 | } |
15690 | |
15691 | void Sema::DiagnoseEmptyStmtBody(SourceLocation StmtLoc, |
15692 | const Stmt *Body, |
15693 | unsigned DiagID) { |
15694 | |
15695 | |
15696 | if (CurrentInstantiationScope) |
15697 | return; |
15698 | |
15699 | |
15700 | const NullStmt *NBody = dyn_cast<NullStmt>(Body); |
15701 | if (!NBody) |
15702 | return; |
15703 | |
15704 | |
15705 | if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) |
15706 | return; |
15707 | |
15708 | Diag(NBody->getSemiLoc(), DiagID); |
15709 | Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); |
15710 | } |
15711 | |
15712 | void Sema::DiagnoseEmptyLoopBody(const Stmt *S, |
15713 | const Stmt *PossibleBody) { |
15714 | assert(!CurrentInstantiationScope); |
15715 | |
15716 | SourceLocation StmtLoc; |
15717 | const Stmt *Body; |
15718 | unsigned DiagID; |
15719 | if (const ForStmt *FS = dyn_cast<ForStmt>(S)) { |
15720 | StmtLoc = FS->getRParenLoc(); |
15721 | Body = FS->getBody(); |
15722 | DiagID = diag::warn_empty_for_body; |
15723 | } else if (const WhileStmt *WS = dyn_cast<WhileStmt>(S)) { |
15724 | StmtLoc = WS->getCond()->getSourceRange().getEnd(); |
15725 | Body = WS->getBody(); |
15726 | DiagID = diag::warn_empty_while_body; |
15727 | } else |
15728 | return; |
15729 | |
15730 | |
15731 | const NullStmt *NBody = dyn_cast<NullStmt>(Body); |
15732 | if (!NBody) |
15733 | return; |
15734 | |
15735 | |
15736 | if (Diags.isIgnored(DiagID, NBody->getSemiLoc())) |
15737 | return; |
15738 | |
15739 | |
15740 | if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) |
15741 | return; |
15742 | |
15743 | |
15744 | |
15745 | |
15746 | |
15747 | |
15748 | |
15749 | |
15750 | |
15751 | |
15752 | |
15753 | |
15754 | bool ProbableTypo = isa<CompoundStmt>(PossibleBody); |
15755 | if (!ProbableTypo) { |
15756 | bool BodyColInvalid; |
15757 | unsigned BodyCol = SourceMgr.getPresumedColumnNumber( |
15758 | PossibleBody->getBeginLoc(), &BodyColInvalid); |
15759 | if (BodyColInvalid) |
15760 | return; |
15761 | |
15762 | bool StmtColInvalid; |
15763 | unsigned StmtCol = |
15764 | SourceMgr.getPresumedColumnNumber(S->getBeginLoc(), &StmtColInvalid); |
15765 | if (StmtColInvalid) |
15766 | return; |
15767 | |
15768 | if (BodyCol > StmtCol) |
15769 | ProbableTypo = true; |
15770 | } |
15771 | |
15772 | if (ProbableTypo) { |
15773 | Diag(NBody->getSemiLoc(), DiagID); |
15774 | Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); |
15775 | } |
15776 | } |
15777 | |
15778 | |
15779 | |
15780 | |
15781 | void Sema::DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, |
15782 | SourceLocation OpLoc) { |
15783 | if (Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, OpLoc)) |
15784 | return; |
15785 | |
15786 | if (inTemplateInstantiation()) |
15787 | return; |
15788 | |
15789 | |
15790 | LHSExpr = LHSExpr->IgnoreParenImpCasts(); |
15791 | RHSExpr = RHSExpr->IgnoreParenImpCasts(); |
15792 | |
15793 | |
15794 | const CallExpr *CE = dyn_cast<CallExpr>(RHSExpr); |
15795 | if (!CE || CE->getNumArgs() != 1) |
15796 | return; |
15797 | |
15798 | |
15799 | if (!CE->isCallToStdMove()) |
15800 | return; |
15801 | |
15802 | |
15803 | RHSExpr = CE->getArg(0); |
15804 | |
15805 | const DeclRefExpr *LHSDeclRef = dyn_cast<DeclRefExpr>(LHSExpr); |
15806 | const DeclRefExpr *RHSDeclRef = dyn_cast<DeclRefExpr>(RHSExpr); |
15807 | |
15808 | |
15809 | if (LHSDeclRef && RHSDeclRef) { |
15810 | if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) |
15811 | return; |
15812 | if (LHSDeclRef->getDecl()->getCanonicalDecl() != |
15813 | RHSDeclRef->getDecl()->getCanonicalDecl()) |
15814 | return; |
15815 | |
15816 | Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() |
15817 | << LHSExpr->getSourceRange() |
15818 | << RHSExpr->getSourceRange(); |
15819 | return; |
15820 | } |
15821 | |
15822 | |
15823 | |
15824 | |
15825 | |
15826 | const Expr *LHSBase = LHSExpr; |
15827 | const Expr *RHSBase = RHSExpr; |
15828 | const MemberExpr *LHSME = dyn_cast<MemberExpr>(LHSExpr); |
15829 | const MemberExpr *RHSME = dyn_cast<MemberExpr>(RHSExpr); |
15830 | if (!LHSME || !RHSME) |
15831 | return; |
15832 | |
15833 | while (LHSME && RHSME) { |
15834 | if (LHSME->getMemberDecl()->getCanonicalDecl() != |
15835 | RHSME->getMemberDecl()->getCanonicalDecl()) |
15836 | return; |
15837 | |
15838 | LHSBase = LHSME->getBase(); |
15839 | RHSBase = RHSME->getBase(); |
15840 | LHSME = dyn_cast<MemberExpr>(LHSBase); |
15841 | RHSME = dyn_cast<MemberExpr>(RHSBase); |
15842 | } |
15843 | |
15844 | LHSDeclRef = dyn_cast<DeclRefExpr>(LHSBase); |
15845 | RHSDeclRef = dyn_cast<DeclRefExpr>(RHSBase); |
15846 | if (LHSDeclRef && RHSDeclRef) { |
15847 | if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) |
15848 | return; |
15849 | if (LHSDeclRef->getDecl()->getCanonicalDecl() != |
15850 | RHSDeclRef->getDecl()->getCanonicalDecl()) |
15851 | return; |
15852 | |
15853 | Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() |
15854 | << LHSExpr->getSourceRange() |
15855 | << RHSExpr->getSourceRange(); |
15856 | return; |
15857 | } |
15858 | |
15859 | if (isa<CXXThisExpr>(LHSBase) && isa<CXXThisExpr>(RHSBase)) |
15860 | Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() |
15861 | << LHSExpr->getSourceRange() |
15862 | << RHSExpr->getSourceRange(); |
15863 | } |
15864 | |
15865 | |
15866 | |
15867 | static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); |
15868 | |
15869 | |
15870 | static bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { |
15871 | |
15872 | |
15873 | |
15874 | return ED1->isComplete() && ED2->isComplete() && |
15875 | C.hasSameType(ED1->getIntegerType(), ED2->getIntegerType()); |
15876 | } |
15877 | |
15878 | |
15879 | static bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, |
15880 | FieldDecl *Field2) { |
15881 | if (!isLayoutCompatible(C, Field1->getType(), Field2->getType())) |
15882 | return false; |
15883 | |
15884 | if (Field1->isBitField() != Field2->isBitField()) |
15885 | return false; |
15886 | |
15887 | if (Field1->isBitField()) { |
15888 | |
15889 | unsigned Bits1 = Field1->getBitWidthValue(C); |
15890 | unsigned Bits2 = Field2->getBitWidthValue(C); |
15891 | |
15892 | if (Bits1 != Bits2) |
15893 | return false; |
15894 | } |
15895 | |
15896 | return true; |
15897 | } |
15898 | |
15899 | |
15900 | |
15901 | static bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, |
15902 | RecordDecl *RD2) { |
15903 | |
15904 | if (const CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(RD1)) { |
15905 | |
15906 | |
15907 | const CXXRecordDecl *D2CXX = cast<CXXRecordDecl>(RD2); |
15908 | |
15909 | if (D1CXX->getNumBases() != D2CXX->getNumBases()) |
15910 | return false; |
15911 | |
15912 | |
15913 | for (CXXRecordDecl::base_class_const_iterator |
15914 | Base1 = D1CXX->bases_begin(), |
15915 | BaseEnd1 = D1CXX->bases_end(), |
15916 | Base2 = D2CXX->bases_begin(); |
15917 | Base1 != BaseEnd1; |
15918 | ++Base1, ++Base2) { |
15919 | if (!isLayoutCompatible(C, Base1->getType(), Base2->getType())) |
15920 | return false; |
15921 | } |
15922 | } else if (const CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(RD2)) { |
15923 | |
15924 | if (D2CXX->getNumBases() > 0) |
15925 | return false; |
15926 | } |
15927 | |
15928 | |
15929 | RecordDecl::field_iterator Field2 = RD2->field_begin(), |
15930 | Field2End = RD2->field_end(), |
15931 | Field1 = RD1->field_begin(), |
15932 | Field1End = RD1->field_end(); |
15933 | for ( ; Field1 != Field1End && Field2 != Field2End; ++Field1, ++Field2) { |
15934 | if (!isLayoutCompatible(C, *Field1, *Field2)) |
15935 | return false; |
15936 | } |
15937 | if (Field1 != Field1End || Field2 != Field2End) |
15938 | return false; |
15939 | |
15940 | return true; |
15941 | } |
15942 | |
15943 | |
15944 | |
15945 | static bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, |
15946 | RecordDecl *RD2) { |
15947 | llvm::SmallPtrSet<FieldDecl *, 8> UnmatchedFields; |
15948 | for (auto *Field2 : RD2->fields()) |
15949 | UnmatchedFields.insert(Field2); |
15950 | |
15951 | for (auto *Field1 : RD1->fields()) { |
15952 | llvm::SmallPtrSet<FieldDecl *, 8>::iterator |
15953 | I = UnmatchedFields.begin(), |
15954 | E = UnmatchedFields.end(); |
15955 | |
15956 | for ( ; I != E; ++I) { |
15957 | if (isLayoutCompatible(C, Field1, *I)) { |
15958 | bool Result = UnmatchedFields.erase(*I); |
15959 | (void) Result; |
15960 | assert(Result); |
15961 | break; |
15962 | } |
15963 | } |
15964 | if (I == E) |
15965 | return false; |
15966 | } |
15967 | |
15968 | return UnmatchedFields.empty(); |
15969 | } |
15970 | |
15971 | static bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, |
15972 | RecordDecl *RD2) { |
15973 | if (RD1->isUnion() != RD2->isUnion()) |
15974 | return false; |
15975 | |
15976 | if (RD1->isUnion()) |
15977 | return isLayoutCompatibleUnion(C, RD1, RD2); |
15978 | else |
15979 | return isLayoutCompatibleStruct(C, RD1, RD2); |
15980 | } |
15981 | |
15982 | |
15983 | static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { |
15984 | if (T1.isNull() || T2.isNull()) |
15985 | return false; |
15986 | |
15987 | |
15988 | |
15989 | |
15990 | if (C.hasSameType(T1, T2)) |
15991 | return true; |
15992 | |
15993 | T1 = T1.getCanonicalType().getUnqualifiedType(); |
15994 | T2 = T2.getCanonicalType().getUnqualifiedType(); |
15995 | |
15996 | const Type::TypeClass TC1 = T1->getTypeClass(); |
15997 | const Type::TypeClass TC2 = T2->getTypeClass(); |
15998 | |
15999 | if (TC1 != TC2) |
16000 | return false; |
16001 | |
16002 | if (TC1 == Type::Enum) { |
16003 | return isLayoutCompatible(C, |
16004 | cast<EnumType>(T1)->getDecl(), |
16005 | cast<EnumType>(T2)->getDecl()); |
16006 | } else if (TC1 == Type::Record) { |
16007 | if (!T1->isStandardLayoutType() || !T2->isStandardLayoutType()) |
16008 | return false; |
16009 | |
16010 | return isLayoutCompatible(C, |
16011 | cast<RecordType>(T1)->getDecl(), |
16012 | cast<RecordType>(T2)->getDecl()); |
16013 | } |
16014 | |
16015 | return false; |
16016 | } |
16017 | |
16018 | |
16019 | |
16020 | |
16021 | |
16022 | |
16023 | |
16024 | |
16025 | |
16026 | |
16027 | |
16028 | |
16029 | |
16030 | |
16031 | static bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, |
16032 | const ValueDecl **VD, uint64_t *MagicValue, |
16033 | bool isConstantEvaluated) { |
16034 | while(true) { |
16035 | if (!TypeExpr) |
16036 | return false; |
16037 | |
16038 | TypeExpr = TypeExpr->IgnoreParenImpCasts()->IgnoreParenCasts(); |
16039 | |
16040 | switch (TypeExpr->getStmtClass()) { |
16041 | case Stmt::UnaryOperatorClass: { |
16042 | const UnaryOperator *UO = cast<UnaryOperator>(TypeExpr); |
16043 | if (UO->getOpcode() == UO_AddrOf || UO->getOpcode() == UO_Deref) { |
16044 | TypeExpr = UO->getSubExpr(); |
16045 | continue; |
16046 | } |
16047 | return false; |
16048 | } |
16049 | |
16050 | case Stmt::DeclRefExprClass: { |
16051 | const DeclRefExpr *DRE = cast<DeclRefExpr>(TypeExpr); |
16052 | *VD = DRE->getDecl(); |
16053 | return true; |
16054 | } |
16055 | |
16056 | case Stmt::IntegerLiteralClass: { |
16057 | const IntegerLiteral *IL = cast<IntegerLiteral>(TypeExpr); |
16058 | llvm::APInt MagicValueAPInt = IL->getValue(); |
16059 | if (MagicValueAPInt.getActiveBits() <= 64) { |
16060 | *MagicValue = MagicValueAPInt.getZExtValue(); |
16061 | return true; |
16062 | } else |
16063 | return false; |
16064 | } |
16065 | |
16066 | case Stmt::BinaryConditionalOperatorClass: |
16067 | case Stmt::ConditionalOperatorClass: { |
16068 | const AbstractConditionalOperator *ACO = |
16069 | cast<AbstractConditionalOperator>(TypeExpr); |
16070 | bool Result; |
16071 | if (ACO->getCond()->EvaluateAsBooleanCondition(Result, Ctx, |
16072 | isConstantEvaluated)) { |
16073 | if (Result) |
16074 | TypeExpr = ACO->getTrueExpr(); |
16075 | else |
16076 | TypeExpr = ACO->getFalseExpr(); |
16077 | continue; |
16078 | } |
16079 | return false; |
16080 | } |
16081 | |
16082 | case Stmt::BinaryOperatorClass: { |
16083 | const BinaryOperator *BO = cast<BinaryOperator>(TypeExpr); |
16084 | if (BO->getOpcode() == BO_Comma) { |
16085 | TypeExpr = BO->getRHS(); |
16086 | continue; |
16087 | } |
16088 | return false; |
16089 | } |
16090 | |
16091 | default: |
16092 | return false; |
16093 | } |
16094 | } |
16095 | } |
16096 | |
16097 | |
16098 | |
16099 | |
16100 | |
16101 | |
16102 | |
16103 | |
16104 | |
16105 | |
16106 | |
16107 | |
16108 | |
16109 | |
16110 | |
16111 | |
16112 | static bool GetMatchingCType( |
16113 | const IdentifierInfo *ArgumentKind, const Expr *TypeExpr, |
16114 | const ASTContext &Ctx, |
16115 | const llvm::DenseMap<Sema::TypeTagMagicValue, Sema::TypeTagData> |
16116 | *MagicValues, |
16117 | bool &FoundWrongKind, Sema::TypeTagData &TypeInfo, |
16118 | bool isConstantEvaluated) { |
16119 | FoundWrongKind = false; |
16120 | |
16121 | |
16122 | const ValueDecl *VD = nullptr; |
16123 | |
16124 | uint64_t MagicValue; |
16125 | |
16126 | if (!FindTypeTagExpr(TypeExpr, Ctx, &VD, &MagicValue, isConstantEvaluated)) |
16127 | return false; |
16128 | |
16129 | if (VD) { |
16130 | if (TypeTagForDatatypeAttr *I = VD->getAttr<TypeTagForDatatypeAttr>()) { |
16131 | if (I->getArgumentKind() != ArgumentKind) { |
16132 | FoundWrongKind = true; |
16133 | return false; |
16134 | } |
16135 | TypeInfo.Type = I->getMatchingCType(); |
16136 | TypeInfo.LayoutCompatible = I->getLayoutCompatible(); |
16137 | TypeInfo.MustBeNull = I->getMustBeNull(); |
16138 | return true; |
16139 | } |
16140 | return false; |
16141 | } |
16142 | |
16143 | if (!MagicValues) |
16144 | return false; |
16145 | |
16146 | llvm::DenseMap<Sema::TypeTagMagicValue, |
16147 | Sema::TypeTagData>::const_iterator I = |
16148 | MagicValues->find(std::make_pair(ArgumentKind, MagicValue)); |
16149 | if (I == MagicValues->end()) |
16150 | return false; |
16151 | |
16152 | TypeInfo = I->second; |
16153 | return true; |
16154 | } |
16155 | |
16156 | void Sema::RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, |
16157 | uint64_t MagicValue, QualType Type, |
16158 | bool LayoutCompatible, |
16159 | bool MustBeNull) { |
16160 | if (!TypeTagForDatatypeMagicValues) |
16161 | TypeTagForDatatypeMagicValues.reset( |
16162 | new llvm::DenseMap<TypeTagMagicValue, TypeTagData>); |
16163 | |
16164 | TypeTagMagicValue Magic(ArgumentKind, MagicValue); |
16165 | (*TypeTagForDatatypeMagicValues)[Magic] = |
16166 | TypeTagData(Type, LayoutCompatible, MustBeNull); |
16167 | } |
16168 | |
16169 | static bool IsSameCharType(QualType T1, QualType T2) { |
16170 | const BuiltinType *BT1 = T1->getAs<BuiltinType>(); |
16171 | if (!BT1) |
16172 | return false; |
16173 | |
16174 | const BuiltinType *BT2 = T2->getAs<BuiltinType>(); |
16175 | if (!BT2) |
16176 | return false; |
16177 | |
16178 | BuiltinType::Kind T1Kind = BT1->getKind(); |
16179 | BuiltinType::Kind T2Kind = BT2->getKind(); |
16180 | |
16181 | return (T1Kind == BuiltinType::SChar && T2Kind == BuiltinType::Char_S) || |
16182 | (T1Kind == BuiltinType::UChar && T2Kind == BuiltinType::Char_U) || |
16183 | (T1Kind == BuiltinType::Char_U && T2Kind == BuiltinType::UChar) || |
16184 | (T1Kind == BuiltinType::Char_S && T2Kind == BuiltinType::SChar); |
16185 | } |
16186 | |
16187 | void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, |
16188 | const ArrayRef<const Expr *> ExprArgs, |
16189 | SourceLocation CallSiteLoc) { |
16190 | const IdentifierInfo *ArgumentKind = Attr->getArgumentKind(); |
16191 | bool IsPointerAttr = Attr->getIsPointer(); |
16192 | |
16193 | |
16194 | unsigned TypeTagIdxAST = Attr->getTypeTagIdx().getASTIndex(); |
16195 | if (TypeTagIdxAST >= ExprArgs.size()) { |
16196 | Diag(CallSiteLoc, diag::err_tag_index_out_of_range) |
16197 | << 0 << Attr->getTypeTagIdx().getSourceIndex(); |
16198 | return; |
16199 | } |
16200 | const Expr *TypeTagExpr = ExprArgs[TypeTagIdxAST]; |
16201 | bool FoundWrongKind; |
16202 | TypeTagData TypeInfo; |
16203 | if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context, |
16204 | TypeTagForDatatypeMagicValues.get(), FoundWrongKind, |
16205 | TypeInfo, isConstantEvaluated())) { |
16206 | if (FoundWrongKind) |
16207 | Diag(TypeTagExpr->getExprLoc(), |
16208 | diag::warn_type_tag_for_datatype_wrong_kind) |
16209 | << TypeTagExpr->getSourceRange(); |
16210 | return; |
16211 | } |
16212 | |
16213 | |
16214 | unsigned ArgumentIdxAST = Attr->getArgumentIdx().getASTIndex(); |
16215 | if (ArgumentIdxAST >= ExprArgs.size()) { |
16216 | Diag(CallSiteLoc, diag::err_tag_index_out_of_range) |
16217 | << 1 << Attr->getArgumentIdx().getSourceIndex(); |
16218 | return; |
16219 | } |
16220 | const Expr *ArgumentExpr = ExprArgs[ArgumentIdxAST]; |
16221 | if (IsPointerAttr) { |
16222 | |
16223 | if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(ArgumentExpr)) |
16224 | if (ICE->getType()->isVoidPointerType() && |
16225 | ICE->getCastKind() == CK_BitCast) |
16226 | ArgumentExpr = ICE->getSubExpr(); |
16227 | } |
16228 | QualType ArgumentType = ArgumentExpr->getType(); |
16229 | |
16230 | |
16231 | if (IsPointerAttr && ArgumentType->isVoidPointerType()) |
16232 | return; |
16233 | |
16234 | if (TypeInfo.MustBeNull) { |
16235 | |
16236 | if (!ArgumentExpr->isNullPointerConstant(Context, |
16237 | Expr::NPC_ValueDependentIsNotNull)) { |
16238 | Diag(ArgumentExpr->getExprLoc(), |
16239 | diag::warn_type_safety_null_pointer_required) |
16240 | << ArgumentKind->getName() |
16241 | << ArgumentExpr->getSourceRange() |
16242 | << TypeTagExpr->getSourceRange(); |
16243 | } |
16244 | return; |
16245 | } |
16246 | |
16247 | QualType RequiredType = TypeInfo.Type; |
16248 | if (IsPointerAttr) |
16249 | RequiredType = Context.getPointerType(RequiredType); |
16250 | |
16251 | bool mismatch = false; |
16252 | if (!TypeInfo.LayoutCompatible) { |
16253 | mismatch = !Context.hasSameType(ArgumentType, RequiredType); |
16254 | |
16255 | |
16256 | |
16257 | |
16258 | |
16259 | |
16260 | if (mismatch) |
16261 | if ((IsPointerAttr && IsSameCharType(ArgumentType->getPointeeType(), |
16262 | RequiredType->getPointeeType())) || |
16263 | (!IsPointerAttr && IsSameCharType(ArgumentType, RequiredType))) |
16264 | mismatch = false; |
16265 | } else |
16266 | if (IsPointerAttr) |
16267 | mismatch = !isLayoutCompatible(Context, |
16268 | ArgumentType->getPointeeType(), |
16269 | RequiredType->getPointeeType()); |
16270 | else |
16271 | mismatch = !isLayoutCompatible(Context, ArgumentType, RequiredType); |
16272 | |
16273 | if (mismatch) |
16274 | Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_type_mismatch) |
16275 | << ArgumentType << ArgumentKind |
16276 | << TypeInfo.LayoutCompatible << RequiredType |
16277 | << ArgumentExpr->getSourceRange() |
16278 | << TypeTagExpr->getSourceRange(); |
16279 | } |
16280 | |
16281 | void Sema::AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD, |
16282 | CharUnits Alignment) { |
16283 | MisalignedMembers.emplace_back(E, RD, MD, Alignment); |
16284 | } |
16285 | |
16286 | void Sema::DiagnoseMisalignedMembers() { |
16287 | for (MisalignedMember &m : MisalignedMembers) { |
16288 | const NamedDecl *ND = m.RD; |
16289 | if (ND->getName().empty()) { |
16290 | if (const TypedefNameDecl *TD = m.RD->getTypedefNameForAnonDecl()) |
16291 | ND = TD; |
16292 | } |
16293 | Diag(m.E->getBeginLoc(), diag::warn_taking_address_of_packed_member) |
16294 | << m.MD << ND << m.E->getSourceRange(); |
16295 | } |
16296 | MisalignedMembers.clear(); |
16297 | } |
16298 | |
16299 | void Sema::DiscardMisalignedMemberAddress(const Type *T, Expr *E) { |
16300 | E = E->IgnoreParens(); |
16301 | if (!T->isPointerType() && !T->isIntegerType()) |
16302 | return; |
16303 | if (isa<UnaryOperator>(E) && |
16304 | cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf) { |
16305 | auto *Op = cast<UnaryOperator>(E)->getSubExpr()->IgnoreParens(); |
16306 | if (isa<MemberExpr>(Op)) { |
16307 | auto MA = llvm::find(MisalignedMembers, MisalignedMember(Op)); |
16308 | if (MA != MisalignedMembers.end() && |
16309 | (T->isIntegerType() || |
16310 | (T->isPointerType() && (T->getPointeeType()->isIncompleteType() || |
16311 | Context.getTypeAlignInChars( |
16312 | T->getPointeeType()) <= MA->Alignment)))) |
16313 | MisalignedMembers.erase(MA); |
16314 | } |
16315 | } |
16316 | } |
16317 | |
16318 | void Sema::RefersToMemberWithReducedAlignment( |
16319 | Expr *E, |
16320 | llvm::function_ref<void(Expr *, RecordDecl *, FieldDecl *, CharUnits)> |
16321 | Action) { |
16322 | const auto *ME = dyn_cast<MemberExpr>(E); |
16323 | if (!ME) |
16324 | return; |
16325 | |
16326 | |
16327 | if (E->getType().getQualifiers().hasUnaligned()) |
16328 | return; |
16329 | |
16330 | |
16331 | |
16332 | SmallVector<FieldDecl *, 4> ReverseMemberChain; |
16333 | const MemberExpr *TopME = nullptr; |
16334 | bool AnyIsPacked = false; |
16335 | do { |
16336 | QualType BaseType = ME->getBase()->getType(); |
16337 | if (BaseType->isDependentType()) |
16338 | return; |
16339 | if (ME->isArrow()) |
16340 | BaseType = BaseType->getPointeeType(); |
16341 | RecordDecl *RD = BaseType->castAs<RecordType>()->getDecl(); |
16342 | if (RD->isInvalidDecl()) |
16343 | return; |
16344 | |
16345 | ValueDecl *MD = ME->getMemberDecl(); |
16346 | auto *FD = dyn_cast<FieldDecl>(MD); |
16347 | |
16348 | if (!FD || FD->isInvalidDecl()) |
16349 | return; |
16350 | |
16351 | AnyIsPacked = |
16352 | AnyIsPacked || (RD->hasAttr<PackedAttr>() || MD->hasAttr<PackedAttr>()); |
16353 | ReverseMemberChain.push_back(FD); |
16354 | |
16355 | TopME = ME; |
16356 | ME = dyn_cast<MemberExpr>(ME->getBase()->IgnoreParens()); |
16357 | } while (ME); |
16358 | assert(TopME && "We did not compute a topmost MemberExpr!"); |
16359 | |
16360 | |
16361 | if (!AnyIsPacked) |
16362 | return; |
16363 | |
16364 | const Expr *TopBase = TopME->getBase()->IgnoreParenImpCasts(); |
16365 | const auto *DRE = dyn_cast<DeclRefExpr>(TopBase); |
16366 | |
16367 | |
16368 | |
16369 | if (!DRE && !isa<CXXThisExpr>(TopBase)) |
16370 | return; |
16371 | |
16372 | |
16373 | CharUnits ExpectedAlignment = Context.getTypeAlignInChars(E->getType()); |
16374 | |
16375 | |
16376 | if (ExpectedAlignment.isOne()) |
16377 | return; |
16378 | |
16379 | |
16380 | CharUnits Offset; |
16381 | for (auto I = ReverseMemberChain.rbegin(); I != ReverseMemberChain.rend(); |
16382 | I++) { |
16383 | Offset += Context.toCharUnitsFromBits(Context.getFieldOffset(*I)); |
16384 | } |
16385 | |
16386 | |
16387 | CharUnits CompleteObjectAlignment = Context.getTypeAlignInChars( |
16388 | ReverseMemberChain.back()->getParent()->getTypeForDecl()); |
16389 | |
16390 | |
16391 | |
16392 | if (DRE && !TopME->isArrow()) { |
16393 | const ValueDecl *VD = DRE->getDecl(); |
16394 | if (!VD->getType()->isReferenceType()) |
16395 | CompleteObjectAlignment = |
16396 | std::max(CompleteObjectAlignment, Context.getDeclAlign(VD)); |
16397 | } |
16398 | |
16399 | |
16400 | if (Offset % ExpectedAlignment != 0 || |
16401 | |
16402 | |
16403 | CompleteObjectAlignment < ExpectedAlignment) { |
16404 | |
16405 | |
16406 | |
16407 | |
16408 | |
16409 | |
16410 | |
16411 | |
16412 | FieldDecl *FD = nullptr; |
16413 | CharUnits Alignment; |
16414 | for (FieldDecl *FDI : ReverseMemberChain) { |
16415 | if (FDI->hasAttr<PackedAttr>() || |
16416 | FDI->getParent()->hasAttr<PackedAttr>()) { |
16417 | FD = FDI; |
16418 | Alignment = std::min( |
16419 | Context.getTypeAlignInChars(FD->getType()), |
16420 | Context.getTypeAlignInChars(FD->getParent()->getTypeForDecl())); |
16421 | break; |
16422 | } |
16423 | } |
16424 | assert(FD && "We did not find a packed FieldDecl!"); |
16425 | Action(E, FD->getParent(), FD, Alignment); |
16426 | } |
16427 | } |
16428 | |
16429 | void Sema::CheckAddressOfPackedMember(Expr *rhs) { |
16430 | using namespace std::placeholders; |
16431 | |
16432 | RefersToMemberWithReducedAlignment( |
16433 | rhs, std::bind(&Sema::AddPotentialMisalignedMembers, std::ref(*this), _1, |
16434 | _2, _3, _4)); |
16435 | } |
16436 | |
16437 | ExprResult Sema::SemaBuiltinMatrixTranspose(CallExpr *TheCall, |
16438 | ExprResult CallResult) { |
16439 | if (checkArgCount(*this, TheCall, 1)) |
16440 | return ExprError(); |
16441 | |
16442 | ExprResult MatrixArg = DefaultLvalueConversion(TheCall->getArg(0)); |
16443 | if (MatrixArg.isInvalid()) |
16444 | return MatrixArg; |
16445 | Expr *Matrix = MatrixArg.get(); |
16446 | |
16447 | auto *MType = Matrix->getType()->getAs<ConstantMatrixType>(); |
16448 | if (!MType) { |
16449 | Diag(Matrix->getBeginLoc(), diag::err_builtin_matrix_arg); |
16450 | return ExprError(); |
16451 | } |
16452 | |
16453 | |
16454 | |
16455 | QualType ResultType = Context.getConstantMatrixType( |
16456 | MType->getElementType(), MType->getNumColumns(), MType->getNumRows()); |
16457 | |
16458 | |
16459 | TheCall->setType(ResultType); |
16460 | |
16461 | |
16462 | TheCall->setArg(0, Matrix); |
16463 | return CallResult; |
16464 | } |
16465 | |
16466 | |
16467 | static llvm::Optional<unsigned> |
16468 | getAndVerifyMatrixDimension(Expr *Expr, StringRef Name, Sema &S) { |
16469 | SourceLocation ErrorPos; |
16470 | Optional<llvm::APSInt> Value = |
16471 | Expr->getIntegerConstantExpr(S.Context, &ErrorPos); |
16472 | if (!Value) { |
16473 | S.Diag(Expr->getBeginLoc(), diag::err_builtin_matrix_scalar_unsigned_arg) |
16474 | << Name; |
16475 | return {}; |
16476 | } |
16477 | uint64_t Dim = Value->getZExtValue(); |
16478 | if (!ConstantMatrixType::isDimensionValid(Dim)) { |
16479 | S.Diag(Expr->getBeginLoc(), diag::err_builtin_matrix_invalid_dimension) |
16480 | << Name << ConstantMatrixType::getMaxElementsPerDimension(); |
16481 | return {}; |
16482 | } |
16483 | return Dim; |
16484 | } |
16485 | |
16486 | ExprResult Sema::SemaBuiltinMatrixColumnMajorLoad(CallExpr *TheCall, |
16487 | ExprResult CallResult) { |
16488 | if (!getLangOpts().MatrixTypes) { |
16489 | Diag(TheCall->getBeginLoc(), diag::err_builtin_matrix_disabled); |
16490 | return ExprError(); |
16491 | } |
16492 | |
16493 | if (checkArgCount(*this, TheCall, 4)) |
16494 | return ExprError(); |
16495 | |
16496 | unsigned PtrArgIdx = 0; |
16497 | Expr *PtrExpr = TheCall->getArg(PtrArgIdx); |
16498 | Expr *RowsExpr = TheCall->getArg(1); |
16499 | Expr *ColumnsExpr = TheCall->getArg(2); |
16500 | Expr *StrideExpr = TheCall->getArg(3); |
16501 | |
16502 | bool ArgError = false; |
16503 | |
16504 | |
16505 | { |
16506 | ExprResult PtrConv = DefaultFunctionArrayLvalueConversion(PtrExpr); |
16507 | if (PtrConv.isInvalid()) |
16508 | return PtrConv; |
16509 | PtrExpr = PtrConv.get(); |
16510 | TheCall->setArg(0, PtrExpr); |
16511 | if (PtrExpr->isTypeDependent()) { |
16512 | TheCall->setType(Context.DependentTy); |
16513 | return TheCall; |
16514 | } |
16515 | } |
16516 | |
16517 | auto *PtrTy = PtrExpr->getType()->getAs<PointerType>(); |
16518 | QualType ElementTy; |
16519 | if (!PtrTy) { |
16520 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_pointer_arg) |
16521 | << PtrArgIdx + 1; |
16522 | ArgError = true; |
16523 | } else { |
16524 | ElementTy = PtrTy->getPointeeType().getUnqualifiedType(); |
16525 | |
16526 | if (!ConstantMatrixType::isValidElementType(ElementTy)) { |
16527 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_pointer_arg) |
16528 | << PtrArgIdx + 1; |
16529 | ArgError = true; |
16530 | } |
16531 | } |
16532 | |
16533 | |
16534 | auto ApplyArgumentConversions = [this](Expr *E) { |
16535 | ExprResult Conv = DefaultLvalueConversion(E); |
16536 | if (Conv.isInvalid()) |
16537 | return Conv; |
16538 | |
16539 | return tryConvertExprToType(Conv.get(), Context.getSizeType()); |
16540 | }; |
16541 | |
16542 | |
16543 | ExprResult RowsConv = ApplyArgumentConversions(RowsExpr); |
16544 | if (!RowsConv.isInvalid()) { |
16545 | RowsExpr = RowsConv.get(); |
16546 | TheCall->setArg(1, RowsExpr); |
16547 | } else |
16548 | RowsExpr = nullptr; |
16549 | |
16550 | ExprResult ColumnsConv = ApplyArgumentConversions(ColumnsExpr); |
16551 | if (!ColumnsConv.isInvalid()) { |
16552 | ColumnsExpr = ColumnsConv.get(); |
16553 | TheCall->setArg(2, ColumnsExpr); |
16554 | } else |
16555 | ColumnsExpr = nullptr; |
16556 | |
16557 | |
16558 | |
16559 | if ((RowsExpr && RowsExpr->isTypeDependent()) || |
16560 | (ColumnsExpr && ColumnsExpr->isTypeDependent())) { |
16561 | TheCall->setType(Context.DependentTy); |
16562 | return CallResult; |
16563 | } |
16564 | |
16565 | |
16566 | llvm::Optional<unsigned> MaybeRows; |
16567 | if (RowsExpr) |
16568 | MaybeRows = getAndVerifyMatrixDimension(RowsExpr, "row", *this); |
16569 | |
16570 | llvm::Optional<unsigned> MaybeColumns; |
16571 | if (ColumnsExpr) |
16572 | MaybeColumns = getAndVerifyMatrixDimension(ColumnsExpr, "column", *this); |
16573 | |
16574 | |
16575 | ExprResult StrideConv = ApplyArgumentConversions(StrideExpr); |
16576 | if (StrideConv.isInvalid()) |
16577 | return ExprError(); |
16578 | StrideExpr = StrideConv.get(); |
16579 | TheCall->setArg(3, StrideExpr); |
16580 | |
16581 | if (MaybeRows) { |
16582 | if (Optional<llvm::APSInt> Value = |
16583 | StrideExpr->getIntegerConstantExpr(Context)) { |
16584 | uint64_t Stride = Value->getZExtValue(); |
16585 | if (Stride < *MaybeRows) { |
16586 | Diag(StrideExpr->getBeginLoc(), |
16587 | diag::err_builtin_matrix_stride_too_small); |
16588 | ArgError = true; |
16589 | } |
16590 | } |
16591 | } |
16592 | |
16593 | if (ArgError || !MaybeRows || !MaybeColumns) |
16594 | return ExprError(); |
16595 | |
16596 | TheCall->setType( |
16597 | Context.getConstantMatrixType(ElementTy, *MaybeRows, *MaybeColumns)); |
16598 | return CallResult; |
16599 | } |
16600 | |
16601 | ExprResult Sema::SemaBuiltinMatrixColumnMajorStore(CallExpr *TheCall, |
16602 | ExprResult CallResult) { |
16603 | if (checkArgCount(*this, TheCall, 3)) |
16604 | return ExprError(); |
16605 | |
16606 | unsigned PtrArgIdx = 1; |
16607 | Expr *MatrixExpr = TheCall->getArg(0); |
16608 | Expr *PtrExpr = TheCall->getArg(PtrArgIdx); |
16609 | Expr *StrideExpr = TheCall->getArg(2); |
16610 | |
16611 | bool ArgError = false; |
16612 | |
16613 | { |
16614 | ExprResult MatrixConv = DefaultLvalueConversion(MatrixExpr); |
16615 | if (MatrixConv.isInvalid()) |
16616 | return MatrixConv; |
16617 | MatrixExpr = MatrixConv.get(); |
16618 | TheCall->setArg(0, MatrixExpr); |
16619 | } |
16620 | if (MatrixExpr->isTypeDependent()) { |
16621 | TheCall->setType(Context.DependentTy); |
16622 | return TheCall; |
16623 | } |
16624 | |
16625 | auto *MatrixTy = MatrixExpr->getType()->getAs<ConstantMatrixType>(); |
16626 | if (!MatrixTy) { |
16627 | Diag(MatrixExpr->getBeginLoc(), diag::err_builtin_matrix_arg) << 0; |
16628 | ArgError = true; |
16629 | } |
16630 | |
16631 | { |
16632 | ExprResult PtrConv = DefaultFunctionArrayLvalueConversion(PtrExpr); |
16633 | if (PtrConv.isInvalid()) |
16634 | return PtrConv; |
16635 | PtrExpr = PtrConv.get(); |
16636 | TheCall->setArg(1, PtrExpr); |
16637 | if (PtrExpr->isTypeDependent()) { |
16638 | TheCall->setType(Context.DependentTy); |
16639 | return TheCall; |
16640 | } |
16641 | } |
16642 | |
16643 | |
16644 | auto *PtrTy = PtrExpr->getType()->getAs<PointerType>(); |
16645 | if (!PtrTy) { |
16646 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_pointer_arg) |
16647 | << PtrArgIdx + 1; |
16648 | ArgError = true; |
16649 | } else { |
16650 | QualType ElementTy = PtrTy->getPointeeType(); |
16651 | if (ElementTy.isConstQualified()) { |
16652 | Diag(PtrExpr->getBeginLoc(), diag::err_builtin_matrix_store_to_const); |
16653 | ArgError = true; |
16654 | } |
16655 | ElementTy = ElementTy.getUnqualifiedType().getCanonicalType(); |
16656 | if (MatrixTy && |
16657 | !Context.hasSameType(ElementTy, MatrixTy->getElementType())) { |
16658 | Diag(PtrExpr->getBeginLoc(), |
16659 | diag::err_builtin_matrix_pointer_arg_mismatch) |
16660 | << ElementTy << MatrixTy->getElementType(); |
16661 | ArgError = true; |
16662 | } |
16663 | } |
16664 | |
16665 | |
16666 | |
16667 | { |
16668 | ExprResult StrideConv = DefaultLvalueConversion(StrideExpr); |
16669 | if (StrideConv.isInvalid()) |
16670 | return StrideConv; |
16671 | |
16672 | StrideConv = tryConvertExprToType(StrideConv.get(), Context.getSizeType()); |
16673 | if (StrideConv.isInvalid()) |
16674 | return StrideConv; |
16675 | StrideExpr = StrideConv.get(); |
16676 | TheCall->setArg(2, StrideExpr); |
16677 | } |
16678 | |
16679 | |
16680 | if (MatrixTy) { |
16681 | if (Optional<llvm::APSInt> Value = |
16682 | StrideExpr->getIntegerConstantExpr(Context)) { |
16683 | uint64_t Stride = Value->getZExtValue(); |
16684 | if (Stride < MatrixTy->getNumRows()) { |
16685 | Diag(StrideExpr->getBeginLoc(), |
16686 | diag::err_builtin_matrix_stride_too_small); |
16687 | ArgError = true; |
16688 | } |
16689 | } |
16690 | } |
16691 | |
16692 | if (ArgError) |
16693 | return ExprError(); |
16694 | |
16695 | return CallResult; |
16696 | } |
16697 | |
16698 | |
16699 | |
16700 | |
16701 | |
16702 | void Sema::CheckTCBEnforcement(const CallExpr *TheCall, |
16703 | const FunctionDecl *Callee) { |
16704 | const FunctionDecl *Caller = getCurFunctionDecl(); |
16705 | |
16706 | |
16707 | if (!Caller || !Caller->hasAttr<EnforceTCBAttr>() || |
16708 | Callee->getBuiltinID() != 0) |
16709 | return; |
16710 | |
16711 | |
16712 | |
16713 | llvm::StringSet<> CalleeTCBs; |
16714 | for_each(Callee->specific_attrs<EnforceTCBAttr>(), |
16715 | [&](const auto *A) { CalleeTCBs.insert(A->getTCBName()); }); |
16716 | for_each(Callee->specific_attrs<EnforceTCBLeafAttr>(), |
16717 | [&](const auto *A) { CalleeTCBs.insert(A->getTCBName()); }); |
16718 | |
16719 | |
16720 | |
16721 | for_each( |
16722 | Caller->specific_attrs<EnforceTCBAttr>(), |
16723 | [&](const auto *A) { |
16724 | StringRef CallerTCB = A->getTCBName(); |
16725 | if (CalleeTCBs.count(CallerTCB) == 0) { |
16726 | this->Diag(TheCall->getExprLoc(), |
16727 | diag::warn_tcb_enforcement_violation) << Callee |
16728 | << CallerTCB; |
16729 | } |
16730 | }); |
16731 | } |