Bug Summary

File:src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU/R600InstrInfo.cpp
Warning:line 388, column 5
Undefined or garbage value returned to caller

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name R600InstrInfo.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/gnu/usr.bin/clang/libLLVM/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Analysis -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ASMParser -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/BinaryFormat -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Bitcode -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Bitcode -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Bitstream -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /include/llvm/CodeGen -I /include/llvm/CodeGen/PBQP -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/IR -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/IR -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Coroutines -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ProfileData/Coverage -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/CodeView -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/DWARF -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/MSF -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/PDB -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Demangle -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ExecutionEngine -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ExecutionEngine/JITLink -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ExecutionEngine/Orc -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend/OpenACC -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Frontend/OpenMP -I /include/llvm/CodeGen/GlobalISel -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/IRReader -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/InstCombine -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/Transforms/InstCombine -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/LTO -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Linker -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/MC -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/MC/MCParser -I /include/llvm/CodeGen/MIRParser -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Object -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Option -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Passes -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ProfileData -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Scalar -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/ADT -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Support -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/DebugInfo/Symbolize -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Target -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Utils -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/Vectorize -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include/llvm/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/X86 -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include/llvm/Transforms/IPO -I /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/include -I /usr/src/gnu/usr.bin/clang/libLLVM/../include -I /usr/src/gnu/usr.bin/clang/libLLVM/obj -I /usr/src/gnu/usr.bin/clang/libLLVM/obj/../include -D NDEBUG -D __STDC_LIMIT_MACROS -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D LLVM_PREFIX="/usr" -internal-isystem /usr/include/c++/v1 -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/usr/src/gnu/usr.bin/clang/libLLVM/obj -ferror-limit 19 -fvisibility-inlines-hidden -fwrapv -stack-protector 2 -fno-rtti -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c++ /usr/src/gnu/usr.bin/clang/libLLVM/../../../llvm/llvm/lib/Target/AMDGPU/R600InstrInfo.cpp
1//===-- R600InstrInfo.cpp - R600 Instruction Information ------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9/// \file
10/// R600 Implementation of TargetInstrInfo.
11//
12//===----------------------------------------------------------------------===//
13
14#include "R600InstrInfo.h"
15#include "AMDGPU.h"
16#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
17#include "R600Defines.h"
18#include "R600Subtarget.h"
19#include "llvm/ADT/SmallSet.h"
20
21using namespace llvm;
22
23#define GET_INSTRINFO_CTOR_DTOR
24#include "R600GenDFAPacketizer.inc"
25
26#define GET_INSTRINFO_CTOR_DTOR
27#define GET_INSTRMAP_INFO
28#define GET_INSTRINFO_NAMED_OPS
29#include "R600GenInstrInfo.inc"
30
31R600InstrInfo::R600InstrInfo(const R600Subtarget &ST)
32 : R600GenInstrInfo(-1, -1), RI(), ST(ST) {}
33
34bool R600InstrInfo::isVector(const MachineInstr &MI) const {
35 return get(MI.getOpcode()).TSFlags & R600_InstFlag::VECTOR;
36}
37
38void R600InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
39 MachineBasicBlock::iterator MI,
40 const DebugLoc &DL, MCRegister DestReg,
41 MCRegister SrcReg, bool KillSrc) const {
42 unsigned VectorComponents = 0;
43 if ((R600::R600_Reg128RegClass.contains(DestReg) ||
44 R600::R600_Reg128VerticalRegClass.contains(DestReg)) &&
45 (R600::R600_Reg128RegClass.contains(SrcReg) ||
46 R600::R600_Reg128VerticalRegClass.contains(SrcReg))) {
47 VectorComponents = 4;
48 } else if((R600::R600_Reg64RegClass.contains(DestReg) ||
49 R600::R600_Reg64VerticalRegClass.contains(DestReg)) &&
50 (R600::R600_Reg64RegClass.contains(SrcReg) ||
51 R600::R600_Reg64VerticalRegClass.contains(SrcReg))) {
52 VectorComponents = 2;
53 }
54
55 if (VectorComponents > 0) {
56 for (unsigned I = 0; I < VectorComponents; I++) {
57 unsigned SubRegIndex = R600RegisterInfo::getSubRegFromChannel(I);
58 buildDefaultInstruction(MBB, MI, R600::MOV,
59 RI.getSubReg(DestReg, SubRegIndex),
60 RI.getSubReg(SrcReg, SubRegIndex))
61 .addReg(DestReg,
62 RegState::Define | RegState::Implicit);
63 }
64 } else {
65 MachineInstr *NewMI = buildDefaultInstruction(MBB, MI, R600::MOV,
66 DestReg, SrcReg);
67 NewMI->getOperand(getOperandIdx(*NewMI, R600::OpName::src0))
68 .setIsKill(KillSrc);
69 }
70}
71
72/// \returns true if \p MBBI can be moved into a new basic.
73bool R600InstrInfo::isLegalToSplitMBBAt(MachineBasicBlock &MBB,
74 MachineBasicBlock::iterator MBBI) const {
75 for (MachineInstr::const_mop_iterator I = MBBI->operands_begin(),
76 E = MBBI->operands_end(); I != E; ++I) {
77 if (I->isReg() && !I->getReg().isVirtual() && I->isUse() &&
78 RI.isPhysRegLiveAcrossClauses(I->getReg()))
79 return false;
80 }
81 return true;
82}
83
84bool R600InstrInfo::isMov(unsigned Opcode) const {
85 switch(Opcode) {
86 default:
87 return false;
88 case R600::MOV:
89 case R600::MOV_IMM_F32:
90 case R600::MOV_IMM_I32:
91 return true;
92 }
93}
94
95bool R600InstrInfo::isReductionOp(unsigned Opcode) const {
96 return false;
97}
98
99bool R600InstrInfo::isCubeOp(unsigned Opcode) const {
100 switch(Opcode) {
101 default: return false;
102 case R600::CUBE_r600_pseudo:
103 case R600::CUBE_r600_real:
104 case R600::CUBE_eg_pseudo:
105 case R600::CUBE_eg_real:
106 return true;
107 }
108}
109
110bool R600InstrInfo::isALUInstr(unsigned Opcode) const {
111 unsigned TargetFlags = get(Opcode).TSFlags;
112
113 return (TargetFlags & R600_InstFlag::ALU_INST);
114}
115
116bool R600InstrInfo::hasInstrModifiers(unsigned Opcode) const {
117 unsigned TargetFlags = get(Opcode).TSFlags;
118
119 return ((TargetFlags & R600_InstFlag::OP1) |
120 (TargetFlags & R600_InstFlag::OP2) |
121 (TargetFlags & R600_InstFlag::OP3));
122}
123
124bool R600InstrInfo::isLDSInstr(unsigned Opcode) const {
125 unsigned TargetFlags = get(Opcode).TSFlags;
126
127 return ((TargetFlags & R600_InstFlag::LDS_1A) |
128 (TargetFlags & R600_InstFlag::LDS_1A1D) |
129 (TargetFlags & R600_InstFlag::LDS_1A2D));
130}
131
132bool R600InstrInfo::isLDSRetInstr(unsigned Opcode) const {
133 return isLDSInstr(Opcode) && getOperandIdx(Opcode, R600::OpName::dst) != -1;
134}
135
136bool R600InstrInfo::canBeConsideredALU(const MachineInstr &MI) const {
137 if (isALUInstr(MI.getOpcode()))
138 return true;
139 if (isVector(MI) || isCubeOp(MI.getOpcode()))
140 return true;
141 switch (MI.getOpcode()) {
142 case R600::PRED_X:
143 case R600::INTERP_PAIR_XY:
144 case R600::INTERP_PAIR_ZW:
145 case R600::INTERP_VEC_LOAD:
146 case R600::COPY:
147 case R600::DOT_4:
148 return true;
149 default:
150 return false;
151 }
152}
153
154bool R600InstrInfo::isTransOnly(unsigned Opcode) const {
155 if (ST.hasCaymanISA())
156 return false;
157 return (get(Opcode).getSchedClass() == R600::Sched::TransALU);
158}
159
160bool R600InstrInfo::isTransOnly(const MachineInstr &MI) const {
161 return isTransOnly(MI.getOpcode());
162}
163
164bool R600InstrInfo::isVectorOnly(unsigned Opcode) const {
165 return (get(Opcode).getSchedClass() == R600::Sched::VecALU);
166}
167
168bool R600InstrInfo::isVectorOnly(const MachineInstr &MI) const {
169 return isVectorOnly(MI.getOpcode());
170}
171
172bool R600InstrInfo::isExport(unsigned Opcode) const {
173 return (get(Opcode).TSFlags & R600_InstFlag::IS_EXPORT);
174}
175
176bool R600InstrInfo::usesVertexCache(unsigned Opcode) const {
177 return ST.hasVertexCache() && IS_VTX(get(Opcode))((get(Opcode)).TSFlags & R600_InstFlag::VTX_INST);
178}
179
180bool R600InstrInfo::usesVertexCache(const MachineInstr &MI) const {
181 const MachineFunction *MF = MI.getParent()->getParent();
182 return !AMDGPU::isCompute(MF->getFunction().getCallingConv()) &&
183 usesVertexCache(MI.getOpcode());
184}
185
186bool R600InstrInfo::usesTextureCache(unsigned Opcode) const {
187 return (!ST.hasVertexCache() && IS_VTX(get(Opcode))((get(Opcode)).TSFlags & R600_InstFlag::VTX_INST)) || IS_TEX(get(Opcode))((get(Opcode)).TSFlags & R600_InstFlag::TEX_INST);
188}
189
190bool R600InstrInfo::usesTextureCache(const MachineInstr &MI) const {
191 const MachineFunction *MF = MI.getParent()->getParent();
192 return (AMDGPU::isCompute(MF->getFunction().getCallingConv()) &&
193 usesVertexCache(MI.getOpcode())) ||
194 usesTextureCache(MI.getOpcode());
195}
196
197bool R600InstrInfo::mustBeLastInClause(unsigned Opcode) const {
198 switch (Opcode) {
199 case R600::KILLGT:
200 case R600::GROUP_BARRIER:
201 return true;
202 default:
203 return false;
204 }
205}
206
207bool R600InstrInfo::usesAddressRegister(MachineInstr &MI) const {
208 return MI.findRegisterUseOperandIdx(R600::AR_X, false, &RI) != -1;
209}
210
211bool R600InstrInfo::definesAddressRegister(MachineInstr &MI) const {
212 return MI.findRegisterDefOperandIdx(R600::AR_X, false, false, &RI) != -1;
213}
214
215bool R600InstrInfo::readsLDSSrcReg(const MachineInstr &MI) const {
216 if (!isALUInstr(MI.getOpcode())) {
217 return false;
218 }
219 for (MachineInstr::const_mop_iterator I = MI.operands_begin(),
220 E = MI.operands_end();
221 I != E; ++I) {
222 if (!I->isReg() || !I->isUse() || I->getReg().isVirtual())
223 continue;
224
225 if (R600::R600_LDS_SRC_REGRegClass.contains(I->getReg()))
226 return true;
227 }
228 return false;
229}
230
231int R600InstrInfo::getSelIdx(unsigned Opcode, unsigned SrcIdx) const {
232 static const unsigned SrcSelTable[][2] = {
233 {R600::OpName::src0, R600::OpName::src0_sel},
234 {R600::OpName::src1, R600::OpName::src1_sel},
235 {R600::OpName::src2, R600::OpName::src2_sel},
236 {R600::OpName::src0_X, R600::OpName::src0_sel_X},
237 {R600::OpName::src0_Y, R600::OpName::src0_sel_Y},
238 {R600::OpName::src0_Z, R600::OpName::src0_sel_Z},
239 {R600::OpName::src0_W, R600::OpName::src0_sel_W},
240 {R600::OpName::src1_X, R600::OpName::src1_sel_X},
241 {R600::OpName::src1_Y, R600::OpName::src1_sel_Y},
242 {R600::OpName::src1_Z, R600::OpName::src1_sel_Z},
243 {R600::OpName::src1_W, R600::OpName::src1_sel_W}
244 };
245
246 for (const auto &Row : SrcSelTable) {
247 if (getOperandIdx(Opcode, Row[0]) == (int)SrcIdx) {
248 return getOperandIdx(Opcode, Row[1]);
249 }
250 }
251 return -1;
252}
253
254SmallVector<std::pair<MachineOperand *, int64_t>, 3>
255R600InstrInfo::getSrcs(MachineInstr &MI) const {
256 SmallVector<std::pair<MachineOperand *, int64_t>, 3> Result;
257
258 if (MI.getOpcode() == R600::DOT_4) {
259 static const unsigned OpTable[8][2] = {
260 {R600::OpName::src0_X, R600::OpName::src0_sel_X},
261 {R600::OpName::src0_Y, R600::OpName::src0_sel_Y},
262 {R600::OpName::src0_Z, R600::OpName::src0_sel_Z},
263 {R600::OpName::src0_W, R600::OpName::src0_sel_W},
264 {R600::OpName::src1_X, R600::OpName::src1_sel_X},
265 {R600::OpName::src1_Y, R600::OpName::src1_sel_Y},
266 {R600::OpName::src1_Z, R600::OpName::src1_sel_Z},
267 {R600::OpName::src1_W, R600::OpName::src1_sel_W},
268 };
269
270 for (unsigned j = 0; j < 8; j++) {
271 MachineOperand &MO =
272 MI.getOperand(getOperandIdx(MI.getOpcode(), OpTable[j][0]));
273 Register Reg = MO.getReg();
274 if (Reg == R600::ALU_CONST) {
275 MachineOperand &Sel =
276 MI.getOperand(getOperandIdx(MI.getOpcode(), OpTable[j][1]));
277 Result.push_back(std::make_pair(&MO, Sel.getImm()));
278 continue;
279 }
280
281 }
282 return Result;
283 }
284
285 static const unsigned OpTable[3][2] = {
286 {R600::OpName::src0, R600::OpName::src0_sel},
287 {R600::OpName::src1, R600::OpName::src1_sel},
288 {R600::OpName::src2, R600::OpName::src2_sel},
289 };
290
291 for (unsigned j = 0; j < 3; j++) {
292 int SrcIdx = getOperandIdx(MI.getOpcode(), OpTable[j][0]);
293 if (SrcIdx < 0)
294 break;
295 MachineOperand &MO = MI.getOperand(SrcIdx);
296 Register Reg = MO.getReg();
297 if (Reg == R600::ALU_CONST) {
298 MachineOperand &Sel =
299 MI.getOperand(getOperandIdx(MI.getOpcode(), OpTable[j][1]));
300 Result.push_back(std::make_pair(&MO, Sel.getImm()));
301 continue;
302 }
303 if (Reg == R600::ALU_LITERAL_X) {
304 MachineOperand &Operand =
305 MI.getOperand(getOperandIdx(MI.getOpcode(), R600::OpName::literal));
306 if (Operand.isImm()) {
307 Result.push_back(std::make_pair(&MO, Operand.getImm()));
308 continue;
309 }
310 assert(Operand.isGlobal())((void)0);
311 }
312 Result.push_back(std::make_pair(&MO, 0));
313 }
314 return Result;
315}
316
317std::vector<std::pair<int, unsigned>>
318R600InstrInfo::ExtractSrcs(MachineInstr &MI,
319 const DenseMap<unsigned, unsigned> &PV,
320 unsigned &ConstCount) const {
321 ConstCount = 0;
322 const std::pair<int, unsigned> DummyPair(-1, 0);
323 std::vector<std::pair<int, unsigned>> Result;
324 unsigned i = 0;
325 for (const auto &Src : getSrcs(MI)) {
326 ++i;
327 Register Reg = Src.first->getReg();
328 int Index = RI.getEncodingValue(Reg) & 0xff;
329 if (Reg == R600::OQAP) {
330 Result.push_back(std::make_pair(Index, 0U));
331 }
332 if (PV.find(Reg) != PV.end()) {
333 // 255 is used to tells its a PS/PV reg
334 Result.push_back(std::make_pair(255, 0U));
335 continue;
336 }
337 if (Index > 127) {
338 ConstCount++;
339 Result.push_back(DummyPair);
340 continue;
341 }
342 unsigned Chan = RI.getHWRegChan(Reg);
343 Result.push_back(std::make_pair(Index, Chan));
344 }
345 for (; i < 3; ++i)
346 Result.push_back(DummyPair);
347 return Result;
348}
349
350static std::vector<std::pair<int, unsigned>>
351Swizzle(std::vector<std::pair<int, unsigned>> Src,
352 R600InstrInfo::BankSwizzle Swz) {
353 if (Src[0] == Src[1])
354 Src[1].first = -1;
355 switch (Swz) {
356 case R600InstrInfo::ALU_VEC_012_SCL_210:
357 break;
358 case R600InstrInfo::ALU_VEC_021_SCL_122:
359 std::swap(Src[1], Src[2]);
360 break;
361 case R600InstrInfo::ALU_VEC_102_SCL_221:
362 std::swap(Src[0], Src[1]);
363 break;
364 case R600InstrInfo::ALU_VEC_120_SCL_212:
365 std::swap(Src[0], Src[1]);
366 std::swap(Src[0], Src[2]);
367 break;
368 case R600InstrInfo::ALU_VEC_201:
369 std::swap(Src[0], Src[2]);
370 std::swap(Src[0], Src[1]);
371 break;
372 case R600InstrInfo::ALU_VEC_210:
373 std::swap(Src[0], Src[2]);
374 break;
375 }
376 return Src;
377}
378
379static unsigned getTransSwizzle(R600InstrInfo::BankSwizzle Swz, unsigned Op) {
380 assert(Op < 3 && "Out of range swizzle index")((void)0);
381 switch (Swz) {
45
←
Control jumps to 'case ALU_VEC_021_SCL_122:' at line 386
→
382 case R600InstrInfo::ALU_VEC_012_SCL_210: {
383 unsigned Cycles[3] = { 2, 1, 0};
384 return Cycles[Op];
385 }
386 case R600InstrInfo::ALU_VEC_021_SCL_122: {
387 unsigned Cycles[3] = { 1, 2, 2};
388 return Cycles[Op];
46
←
Undefined or garbage value returned to caller
389 }
390 case R600InstrInfo::ALU_VEC_120_SCL_212: {
391 unsigned Cycles[3] = { 2, 1, 2};
392 return Cycles[Op];
393 }
394 case R600InstrInfo::ALU_VEC_102_SCL_221: {
395 unsigned Cycles[3] = { 2, 2, 1};
396 return Cycles[Op];
397 }
398 default:
399 llvm_unreachable("Wrong Swizzle for Trans Slot")__builtin_unreachable();
400 }
401}
402
403/// returns how many MIs (whose inputs are represented by IGSrcs) can be packed
404/// in the same Instruction Group while meeting read port limitations given a
405/// Swz swizzle sequence.
406unsigned R600InstrInfo::isLegalUpTo(
407 const std::vector<std::vector<std::pair<int, unsigned>>> &IGSrcs,
408 const std::vector<R600InstrInfo::BankSwizzle> &Swz,
409 const std::vector<std::pair<int, unsigned>> &TransSrcs,
410 R600InstrInfo::BankSwizzle TransSwz) const {
411 int Vector[4][3];
412 memset(Vector, -1, sizeof(Vector));
413 for (unsigned i = 0, e = IGSrcs.size(); i < e; i++) {
414 const std::vector<std::pair<int, unsigned>> &Srcs =
415 Swizzle(IGSrcs[i], Swz[i]);
416 for (unsigned j = 0; j < 3; j++) {
417 const std::pair<int, unsigned> &Src = Srcs[j];
418 if (Src.first < 0 || Src.first == 255)
419 continue;
420 if (Src.first == GET_REG_INDEX(RI.getEncodingValue(R600::OQAP))((RI.getEncodingValue(R600::OQAP)) & 0x1ff)) {
421 if (Swz[i] != R600InstrInfo::ALU_VEC_012_SCL_210 &&
422 Swz[i] != R600InstrInfo::ALU_VEC_021_SCL_122) {
423 // The value from output queue A (denoted by register OQAP) can
424 // only be fetched during the first cycle.
425 return false;
426 }
427 // OQAP does not count towards the normal read port restrictions
428 continue;
429 }
430 if (Vector[Src.second][j] < 0)
431 Vector[Src.second][j] = Src.first;
432 if (Vector[Src.second][j] != Src.first)
433 return i;
434 }
435 }
436 // Now check Trans Alu
437 for (unsigned i = 0, e = TransSrcs.size(); i < e; ++i) {
438 const std::pair<int, unsigned> &Src = TransSrcs[i];
439 unsigned Cycle = getTransSwizzle(TransSwz, i);
440 if (Src.first < 0)
441 continue;
442 if (Src.first == 255)
443 continue;
444 if (Vector[Src.second][Cycle] < 0)
445 Vector[Src.second][Cycle] = Src.first;
446 if (Vector[Src.second][Cycle] != Src.first)
447 return IGSrcs.size() - 1;
448 }
449 return IGSrcs.size();
450}
451
452/// Given a swizzle sequence SwzCandidate and an index Idx, returns the next
453/// (in lexicographic term) swizzle sequence assuming that all swizzles after
454/// Idx can be skipped
455static bool
456NextPossibleSolution(
457 std::vector<R600InstrInfo::BankSwizzle> &SwzCandidate,
458 unsigned Idx) {
459 assert(Idx < SwzCandidate.size())((void)0);
460 int ResetIdx = Idx;
461 while (ResetIdx > -1 && SwzCandidate[ResetIdx] == R600InstrInfo::ALU_VEC_210)
462 ResetIdx --;
463 for (unsigned i = ResetIdx + 1, e = SwzCandidate.size(); i < e; i++) {
464 SwzCandidate[i] = R600InstrInfo::ALU_VEC_012_SCL_210;
465 }
466 if (ResetIdx == -1)
467 return false;
468 int NextSwizzle = SwzCandidate[ResetIdx] + 1;
469 SwzCandidate[ResetIdx] = (R600InstrInfo::BankSwizzle)NextSwizzle;
470 return true;
471}
472
473/// Enumerate all possible Swizzle sequence to find one that can meet all
474/// read port requirements.
475bool R600InstrInfo::FindSwizzleForVectorSlot(
476 const std::vector<std::vector<std::pair<int, unsigned>>> &IGSrcs,
477 std::vector<R600InstrInfo::BankSwizzle> &SwzCandidate,
478 const std::vector<std::pair<int, unsigned>> &TransSrcs,
479 R600InstrInfo::BankSwizzle TransSwz) const {
480 unsigned ValidUpTo = 0;
481 do {
18
←
Loop condition is false. Exiting loop
→
482 ValidUpTo = isLegalUpTo(IGSrcs, SwzCandidate, TransSrcs, TransSwz);
483 if (ValidUpTo == IGSrcs.size())
16
←
Assuming the condition is false
→
17
←
Taking false branch
→
484 return true;
485 } while (NextPossibleSolution(SwzCandidate, ValidUpTo));
486 return false;
19
←
Returning zero, which participates in a condition later
→
487}
488
489/// Instructions in Trans slot can't read gpr at cycle 0 if they also read
490/// a const, and can't read a gpr at cycle 1 if they read 2 const.
491static bool
492isConstCompatible(R600InstrInfo::BankSwizzle TransSwz,
493 const std::vector<std::pair<int, unsigned>> &TransOps,
494 unsigned ConstCount) {
495 // TransALU can't read 3 constants
496 if (ConstCount
8.1
'ConstCount' is <= 2
23.1
'ConstCount' is <= 2
 > 2)
9
←
Taking false branch
→
24
←
Taking false branch
→
497 return false;
498 for (unsigned i = 0, e = TransOps.size(); i < e; ++i) {
10
←
Assuming 'i' is >= 'e'
→
11
←
Loop condition is false. Execution continues on line 508
→
25
←
Assuming 'i' is < 'e'
→
26
←
Loop condition is true. Entering loop body
→
30
←
Assuming 'i' is < 'e'
→
31
←
Loop condition is true. Entering loop body
→
35
←
Assuming 'i' is < 'e'
→
36
←
Loop condition is true. Entering loop body
→
40
←
The value 3 is assigned to 'i'
→
41
←
Assuming 'i' is < 'e'
→
42
←
Loop condition is true. Entering loop body
→
499 const std::pair<int, unsigned> &Src = TransOps[i];
500 unsigned Cycle = getTransSwizzle(TransSwz, i);
43
←
Passing the value 3 via 2nd parameter 'Op'
→
44
←
Calling 'getTransSwizzle'
→
501 if (Src.first < 0)
27
←
Assuming field 'first' is < 0
→
28
←
Taking true branch
→
32
←
Assuming field 'first' is < 0
→
33
←
Taking true branch
→
37
←
Assuming field 'first' is < 0
→
38
←
Taking true branch
→
502 continue;
29
←
 Execution continues on line 498
→
34
←
 Execution continues on line 498
→
39
←
 Execution continues on line 498
→
503 if (ConstCount > 0 && Cycle == 0)
504 return false;
505 if (ConstCount > 1 && Cycle == 1)
506 return false;
507 }
508 return true;
12
←
Returning the value 1, which participates in a condition later
→
509}
510
511bool
512R600InstrInfo::fitsReadPortLimitations(const std::vector<MachineInstr *> &IG,
513 const DenseMap<unsigned, unsigned> &PV,
514 std::vector<BankSwizzle> &ValidSwizzle,
515 bool isLastAluTrans)
516 const {
517 //Todo : support shared src0 - src1 operand
518
519 std::vector<std::vector<std::pair<int, unsigned>>> IGSrcs;
520 ValidSwizzle.clear();
521 unsigned ConstCount;
522 BankSwizzle TransBS = ALU_VEC_012_SCL_210;
523 for (unsigned i = 0, e = IG.size(); i < e; ++i) {
1
Assuming 'i' is < 'e'
→
2
←
Loop condition is true. Entering loop body
→
3
←
Assuming 'i' is >= 'e'
→
4
←
Loop condition is false. Execution continues on line 530
→
524 IGSrcs.push_back(ExtractSrcs(*IG[i], PV, ConstCount));
525 unsigned Op = getOperandIdx(IG[i]->getOpcode(),
526 R600::OpName::bank_swizzle);
527 ValidSwizzle.push_back( (R600InstrInfo::BankSwizzle)
528 IG[i]->getOperand(Op).getImm());
529 }
530 std::vector<std::pair<int, unsigned>> TransOps;
531 if (!isLastAluTrans)
5
←
Assuming 'isLastAluTrans' is true
→
6
←
Taking false branch
→
532 return FindSwizzleForVectorSlot(IGSrcs, ValidSwizzle, TransOps, TransBS);
533
534 TransOps = std::move(IGSrcs.back());
535 IGSrcs.pop_back();
536 ValidSwizzle.pop_back();
537
538 static const R600InstrInfo::BankSwizzle TransSwz[] = {
539 ALU_VEC_012_SCL_210,
540 ALU_VEC_021_SCL_122,
541 ALU_VEC_120_SCL_212,
542 ALU_VEC_102_SCL_221
543 };
544 for (unsigned i = 0; i < 4; i++) {
7
←
Loop condition is true. Entering loop body
→
22
←
Loop condition is true. Entering loop body
→
545 TransBS = TransSwz[i];
546 if (!isConstCompatible(TransBS, TransOps, ConstCount))
8
←
Calling 'isConstCompatible'
→
13
←
Returning from 'isConstCompatible'
→
14
←
Taking false branch
→
23
←
Calling 'isConstCompatible'
→
547 continue;
548 bool Result = FindSwizzleForVectorSlot(IGSrcs, ValidSwizzle, TransOps,
15
←
Calling 'R600InstrInfo::FindSwizzleForVectorSlot'
→
20
←
Returning from 'R600InstrInfo::FindSwizzleForVectorSlot'
→
549 TransBS);
550 if (Result
20.1
'Result' is false
) {
21
←
Taking false branch
→
551 ValidSwizzle.push_back(TransBS);
552 return true;
553 }
554 }
555
556 return false;
557}
558
559bool
560R600InstrInfo::fitsConstReadLimitations(const std::vector<unsigned> &Consts)
561 const {
562 assert (Consts.size() <= 12 && "Too many operands in instructions group")((void)0);
563 unsigned Pair1 = 0, Pair2 = 0;
564 for (unsigned i = 0, n = Consts.size(); i < n; ++i) {
565 unsigned ReadConstHalf = Consts[i] & 2;
566 unsigned ReadConstIndex = Consts[i] & (~3);
567 unsigned ReadHalfConst = ReadConstIndex | ReadConstHalf;
568 if (!Pair1) {
569 Pair1 = ReadHalfConst;
570 continue;
571 }
572 if (Pair1 == ReadHalfConst)
573 continue;
574 if (!Pair2) {
575 Pair2 = ReadHalfConst;
576 continue;
577 }
578 if (Pair2 != ReadHalfConst)
579 return false;
580 }
581 return true;
582}
583
584bool
585R600InstrInfo::fitsConstReadLimitations(const std::vector<MachineInstr *> &MIs)
586 const {
587 std::vector<unsigned> Consts;
588 SmallSet<int64_t, 4> Literals;
589 for (unsigned i = 0, n = MIs.size(); i < n; i++) {
590 MachineInstr &MI = *MIs[i];
591 if (!isALUInstr(MI.getOpcode()))
592 continue;
593
594 for (const auto &Src : getSrcs(MI)) {
595 if (Src.first->getReg() == R600::ALU_LITERAL_X)
596 Literals.insert(Src.second);
597 if (Literals.size() > 4)
598 return false;
599 if (Src.first->getReg() == R600::ALU_CONST)
600 Consts.push_back(Src.second);
601 if (R600::R600_KC0RegClass.contains(Src.first->getReg()) ||
602 R600::R600_KC1RegClass.contains(Src.first->getReg())) {
603 unsigned Index = RI.getEncodingValue(Src.first->getReg()) & 0xff;
604 unsigned Chan = RI.getHWRegChan(Src.first->getReg());
605 Consts.push_back((Index << 2) | Chan);
606 }
607 }
608 }
609 return fitsConstReadLimitations(Consts);
610}
611
612DFAPacketizer *
613R600InstrInfo::CreateTargetScheduleState(const TargetSubtargetInfo &STI) const {
614 const InstrItineraryData *II = STI.getInstrItineraryData();
615 return static_cast<const R600Subtarget &>(STI).createDFAPacketizer(II);
616}
617
618static bool
619isPredicateSetter(unsigned Opcode) {
620 switch (Opcode) {
621 case R600::PRED_X:
622 return true;
623 default:
624 return false;
625 }
626}
627
628static MachineInstr *
629findFirstPredicateSetterFrom(MachineBasicBlock &MBB,
630 MachineBasicBlock::iterator I) {
631 while (I != MBB.begin()) {
632 --I;
633 MachineInstr &MI = *I;
634 if (isPredicateSetter(MI.getOpcode()))
635 return &MI;
636 }
637
638 return nullptr;
639}
640
641static
642bool isJump(unsigned Opcode) {
643 return Opcode == R600::JUMP || Opcode == R600::JUMP_COND;
644}
645
646static bool isBranch(unsigned Opcode) {
647 return Opcode == R600::BRANCH || Opcode == R600::BRANCH_COND_i32 ||
648 Opcode == R600::BRANCH_COND_f32;
649}
650
651bool R600InstrInfo::analyzeBranch(MachineBasicBlock &MBB,
652 MachineBasicBlock *&TBB,
653 MachineBasicBlock *&FBB,
654 SmallVectorImpl<MachineOperand> &Cond,
655 bool AllowModify) const {
656 // Most of the following comes from the ARM implementation of analyzeBranch
657
658 // If the block has no terminators, it just falls into the block after it.
659 MachineBasicBlock::iterator I = MBB.getLastNonDebugInstr();
660 if (I == MBB.end())
661 return false;
662
663 // R600::BRANCH* instructions are only available after isel and are not
664 // handled
665 if (isBranch(I->getOpcode()))
666 return true;
667 if (!isJump(I->getOpcode())) {
668 return false;
669 }
670
671 // Remove successive JUMP
672 while (I != MBB.begin() && std::prev(I)->getOpcode() == R600::JUMP) {
673 MachineBasicBlock::iterator PriorI = std::prev(I);
674 if (AllowModify)
675 I->removeFromParent();
676 I = PriorI;
677 }
678 MachineInstr &LastInst = *I;
679
680 // If there is only one terminator instruction, process it.
681 unsigned LastOpc = LastInst.getOpcode();
682 if (I == MBB.begin() || !isJump((--I)->getOpcode())) {
683 if (LastOpc == R600::JUMP) {
684 TBB = LastInst.getOperand(0).getMBB();
685 return false;
686 } else if (LastOpc == R600::JUMP_COND) {
687 auto predSet = I;
688 while (!isPredicateSetter(predSet->getOpcode())) {
689 predSet = --I;
690 }
691 TBB = LastInst.getOperand(0).getMBB();
692 Cond.push_back(predSet->getOperand(1));
693 Cond.push_back(predSet->getOperand(2));
694 Cond.push_back(MachineOperand::CreateReg(R600::PRED_SEL_ONE, false));
695 return false;
696 }
697 return true; // Can't handle indirect branch.
698 }
699
700 // Get the instruction before it if it is a terminator.
701 MachineInstr &SecondLastInst = *I;
702 unsigned SecondLastOpc = SecondLastInst.getOpcode();
703
704 // If the block ends with a B and a Bcc, handle it.
705 if (SecondLastOpc == R600::JUMP_COND && LastOpc == R600::JUMP) {
706 auto predSet = --I;
707 while (!isPredicateSetter(predSet->getOpcode())) {
708 predSet = --I;
709 }
710 TBB = SecondLastInst.getOperand(0).getMBB();
711 FBB = LastInst.getOperand(0).getMBB();
712 Cond.push_back(predSet->getOperand(1));
713 Cond.push_back(predSet->getOperand(2));
714 Cond.push_back(MachineOperand::CreateReg(R600::PRED_SEL_ONE, false));
715 return false;
716 }
717
718 // Otherwise, can't handle this.
719 return true;
720}
721
722static
723MachineBasicBlock::iterator FindLastAluClause(MachineBasicBlock &MBB) {
724 for (MachineBasicBlock::reverse_iterator It = MBB.rbegin(), E = MBB.rend();
725 It != E; ++It) {
726 if (It->getOpcode() == R600::CF_ALU ||
727 It->getOpcode() == R600::CF_ALU_PUSH_BEFORE)
728 return It.getReverse();
729 }
730 return MBB.end();
731}
732
733unsigned R600InstrInfo::insertBranch(MachineBasicBlock &MBB,
734 MachineBasicBlock *TBB,
735 MachineBasicBlock *FBB,
736 ArrayRef<MachineOperand> Cond,
737 const DebugLoc &DL,
738 int *BytesAdded) const {
739 assert(TBB && "insertBranch must not be told to insert a fallthrough")((void)0);
740 assert(!BytesAdded && "code size not handled")((void)0);
741
742 if (!FBB) {
743 if (Cond.empty()) {
744 BuildMI(&MBB, DL, get(R600::JUMP)).addMBB(TBB);
745 return 1;
746 } else {
747 MachineInstr *PredSet = findFirstPredicateSetterFrom(MBB, MBB.end());
748 assert(PredSet && "No previous predicate !")((void)0);
749 addFlag(*PredSet, 0, MO_FLAG_PUSH(1 << 4));
750 PredSet->getOperand(2).setImm(Cond[1].getImm());
751
752 BuildMI(&MBB, DL, get(R600::JUMP_COND))
753 .addMBB(TBB)
754 .addReg(R600::PREDICATE_BIT, RegState::Kill);
755 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
756 if (CfAlu == MBB.end())
757 return 1;
758 assert (CfAlu->getOpcode() == R600::CF_ALU)((void)0);
759 CfAlu->setDesc(get(R600::CF_ALU_PUSH_BEFORE));
760 return 1;
761 }
762 } else {
763 MachineInstr *PredSet = findFirstPredicateSetterFrom(MBB, MBB.end());
764 assert(PredSet && "No previous predicate !")((void)0);
765 addFlag(*PredSet, 0, MO_FLAG_PUSH(1 << 4));
766 PredSet->getOperand(2).setImm(Cond[1].getImm());
767 BuildMI(&MBB, DL, get(R600::JUMP_COND))
768 .addMBB(TBB)
769 .addReg(R600::PREDICATE_BIT, RegState::Kill);
770 BuildMI(&MBB, DL, get(R600::JUMP)).addMBB(FBB);
771 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
772 if (CfAlu == MBB.end())
773 return 2;
774 assert (CfAlu->getOpcode() == R600::CF_ALU)((void)0);
775 CfAlu->setDesc(get(R600::CF_ALU_PUSH_BEFORE));
776 return 2;
777 }
778}
779
780unsigned R600InstrInfo::removeBranch(MachineBasicBlock &MBB,
781 int *BytesRemoved) const {
782 assert(!BytesRemoved && "code size not handled")((void)0);
783
784 // Note : we leave PRED* instructions there.
785 // They may be needed when predicating instructions.
786
787 MachineBasicBlock::iterator I = MBB.end();
788
789 if (I == MBB.begin()) {
790 return 0;
791 }
792 --I;
793 switch (I->getOpcode()) {
794 default:
795 return 0;
796 case R600::JUMP_COND: {
797 MachineInstr *predSet = findFirstPredicateSetterFrom(MBB, I);
798 clearFlag(*predSet, 0, MO_FLAG_PUSH(1 << 4));
799 I->eraseFromParent();
800 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
801 if (CfAlu == MBB.end())
802 break;
803 assert (CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE)((void)0);
804 CfAlu->setDesc(get(R600::CF_ALU));
805 break;
806 }
807 case R600::JUMP:
808 I->eraseFromParent();
809 break;
810 }
811 I = MBB.end();
812
813 if (I == MBB.begin()) {
814 return 1;
815 }
816 --I;
817 switch (I->getOpcode()) {
818 // FIXME: only one case??
819 default:
820 return 1;
821 case R600::JUMP_COND: {
822 MachineInstr *predSet = findFirstPredicateSetterFrom(MBB, I);
823 clearFlag(*predSet, 0, MO_FLAG_PUSH(1 << 4));
824 I->eraseFromParent();
825 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
826 if (CfAlu == MBB.end())
827 break;
828 assert (CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE)((void)0);
829 CfAlu->setDesc(get(R600::CF_ALU));
830 break;
831 }
832 case R600::JUMP:
833 I->eraseFromParent();
834 break;
835 }
836 return 2;
837}
838
839bool R600InstrInfo::isPredicated(const MachineInstr &MI) const {
840 int idx = MI.findFirstPredOperandIdx();
841 if (idx < 0)
842 return false;
843
844 Register Reg = MI.getOperand(idx).getReg();
845 switch (Reg) {
846 default: return false;
847 case R600::PRED_SEL_ONE:
848 case R600::PRED_SEL_ZERO:
849 case R600::PREDICATE_BIT:
850 return true;
851 }
852}
853
854bool R600InstrInfo::isPredicable(const MachineInstr &MI) const {
855 // XXX: KILL* instructions can be predicated, but they must be the last
856 // instruction in a clause, so this means any instructions after them cannot
857 // be predicated. Until we have proper support for instruction clauses in the
858 // backend, we will mark KILL* instructions as unpredicable.
859
860 if (MI.getOpcode() == R600::KILLGT) {
861 return false;
862 } else if (MI.getOpcode() == R600::CF_ALU) {
863 // If the clause start in the middle of MBB then the MBB has more
864 // than a single clause, unable to predicate several clauses.
865 if (MI.getParent()->begin() != MachineBasicBlock::const_iterator(MI))
866 return false;
867 // TODO: We don't support KC merging atm
868 return MI.getOperand(3).getImm() == 0 && MI.getOperand(4).getImm() == 0;
869 } else if (isVector(MI)) {
870 return false;
871 } else {
872 return TargetInstrInfo::isPredicable(MI);
873 }
874}
875
876bool
877R600InstrInfo::isProfitableToIfCvt(MachineBasicBlock &MBB,
878 unsigned NumCycles,
879 unsigned ExtraPredCycles,
880 BranchProbability Probability) const{
881 return true;
882}
883
884bool
885R600InstrInfo::isProfitableToIfCvt(MachineBasicBlock &TMBB,
886 unsigned NumTCycles,
887 unsigned ExtraTCycles,
888 MachineBasicBlock &FMBB,
889 unsigned NumFCycles,
890 unsigned ExtraFCycles,
891 BranchProbability Probability) const {
892 return true;
893}
894
895bool
896R600InstrInfo::isProfitableToDupForIfCvt(MachineBasicBlock &MBB,
897 unsigned NumCycles,
898 BranchProbability Probability)
899 const {
900 return true;
901}
902
903bool
904R600InstrInfo::isProfitableToUnpredicate(MachineBasicBlock &TMBB,
905 MachineBasicBlock &FMBB) const {
906 return false;
907}
908
909bool
910R600InstrInfo::reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
911 MachineOperand &MO = Cond[1];
912 switch (MO.getImm()) {
913 case R600::PRED_SETE_INT:
914 MO.setImm(R600::PRED_SETNE_INT);
915 break;
916 case R600::PRED_SETNE_INT:
917 MO.setImm(R600::PRED_SETE_INT);
918 break;
919 case R600::PRED_SETE:
920 MO.setImm(R600::PRED_SETNE);
921 break;
922 case R600::PRED_SETNE:
923 MO.setImm(R600::PRED_SETE);
924 break;
925 default:
926 return true;
927 }
928
929 MachineOperand &MO2 = Cond[2];
930 switch (MO2.getReg()) {
931 case R600::PRED_SEL_ZERO:
932 MO2.setReg(R600::PRED_SEL_ONE);
933 break;
934 case R600::PRED_SEL_ONE:
935 MO2.setReg(R600::PRED_SEL_ZERO);
936 break;
937 default:
938 return true;
939 }
940 return false;
941}
942
943bool R600InstrInfo::ClobbersPredicate(MachineInstr &MI,
944 std::vector<MachineOperand> &Pred,
945 bool SkipDead) const {
946 return isPredicateSetter(MI.getOpcode());
947}
948
949bool R600InstrInfo::PredicateInstruction(MachineInstr &MI,
950 ArrayRef<MachineOperand> Pred) const {
951 int PIdx = MI.findFirstPredOperandIdx();
952
953 if (MI.getOpcode() == R600::CF_ALU) {
954 MI.getOperand(8).setImm(0);
955 return true;
956 }
957
958 if (MI.getOpcode() == R600::DOT_4) {
959 MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_X))
960 .setReg(Pred[2].getReg());
961 MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_Y))
962 .setReg(Pred[2].getReg());
963 MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_Z))
964 .setReg(Pred[2].getReg());
965 MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_W))
966 .setReg(Pred[2].getReg());
967 MachineInstrBuilder MIB(*MI.getParent()->getParent(), MI);
968 MIB.addReg(R600::PREDICATE_BIT, RegState::Implicit);
969 return true;
970 }
971
972 if (PIdx != -1) {
973 MachineOperand &PMO = MI.getOperand(PIdx);
974 PMO.setReg(Pred[2].getReg());
975 MachineInstrBuilder MIB(*MI.getParent()->getParent(), MI);
976 MIB.addReg(R600::PREDICATE_BIT, RegState::Implicit);
977 return true;
978 }
979
980 return false;
981}
982
983unsigned int R600InstrInfo::getPredicationCost(const MachineInstr &) const {
984 return 2;
985}
986
987unsigned int R600InstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
988 const MachineInstr &,
989 unsigned *PredCost) const {
990 if (PredCost)
991 *PredCost = 2;
992 return 2;
993}
994
995unsigned R600InstrInfo::calculateIndirectAddress(unsigned RegIndex,
996 unsigned Channel) const {
997 assert(Channel == 0)((void)0);
998 return RegIndex;
999}
1000
1001bool R600InstrInfo::expandPostRAPseudo(MachineInstr &MI) const {
1002 switch (MI.getOpcode()) {
1003 default: {
1004 MachineBasicBlock *MBB = MI.getParent();
1005 int OffsetOpIdx =
1006 R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::addr);
1007 // addr is a custom operand with multiple MI operands, and only the
1008 // first MI operand is given a name.
1009 int RegOpIdx = OffsetOpIdx + 1;
1010 int ChanOpIdx =
1011 R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::chan);
1012 if (isRegisterLoad(MI)) {
1013 int DstOpIdx =
1014 R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::dst);
1015 unsigned RegIndex = MI.getOperand(RegOpIdx).getImm();
1016 unsigned Channel = MI.getOperand(ChanOpIdx).getImm();
1017 unsigned Address = calculateIndirectAddress(RegIndex, Channel);
1018 Register OffsetReg = MI.getOperand(OffsetOpIdx).getReg();
1019 if (OffsetReg == R600::INDIRECT_BASE_ADDR) {
1020 buildMovInstr(MBB, MI, MI.getOperand(DstOpIdx).getReg(),
1021 getIndirectAddrRegClass()->getRegister(Address));
1022 } else {
1023 buildIndirectRead(MBB, MI, MI.getOperand(DstOpIdx).getReg(), Address,
1024 OffsetReg);
1025 }
1026 } else if (isRegisterStore(MI)) {
1027 int ValOpIdx =
1028 R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::val);
1029 unsigned RegIndex = MI.getOperand(RegOpIdx).getImm();
1030 unsigned Channel = MI.getOperand(ChanOpIdx).getImm();
1031 unsigned Address = calculateIndirectAddress(RegIndex, Channel);
1032 Register OffsetReg = MI.getOperand(OffsetOpIdx).getReg();
1033 if (OffsetReg == R600::INDIRECT_BASE_ADDR) {
1034 buildMovInstr(MBB, MI, getIndirectAddrRegClass()->getRegister(Address),
1035 MI.getOperand(ValOpIdx).getReg());
1036 } else {
1037 buildIndirectWrite(MBB, MI, MI.getOperand(ValOpIdx).getReg(),
1038 calculateIndirectAddress(RegIndex, Channel),
1039 OffsetReg);
1040 }
1041 } else {
1042 return false;
1043 }
1044
1045 MBB->erase(MI);
1046 return true;
1047 }
1048 case R600::R600_EXTRACT_ELT_V2:
1049 case R600::R600_EXTRACT_ELT_V4:
1050 buildIndirectRead(MI.getParent(), MI, MI.getOperand(0).getReg(),
1051 RI.getHWRegIndex(MI.getOperand(1).getReg()), // Address
1052 MI.getOperand(2).getReg(),
1053 RI.getHWRegChan(MI.getOperand(1).getReg()));
1054 break;
1055 case R600::R600_INSERT_ELT_V2:
1056 case R600::R600_INSERT_ELT_V4:
1057 buildIndirectWrite(MI.getParent(), MI, MI.getOperand(2).getReg(), // Value
1058 RI.getHWRegIndex(MI.getOperand(1).getReg()), // Address
1059 MI.getOperand(3).getReg(), // Offset
1060 RI.getHWRegChan(MI.getOperand(1).getReg())); // Channel
1061 break;
1062 }
1063 MI.eraseFromParent();
1064 return true;
1065}
1066
1067void R600InstrInfo::reserveIndirectRegisters(BitVector &Reserved,
1068 const MachineFunction &MF,
1069 const R600RegisterInfo &TRI) const {
1070 const R600Subtarget &ST = MF.getSubtarget<R600Subtarget>();
1071 const R600FrameLowering *TFL = ST.getFrameLowering();
1072
1073 unsigned StackWidth = TFL->getStackWidth(MF);
1074 int End = getIndirectIndexEnd(MF);
1075
1076 if (End == -1)
1077 return;
1078
1079 for (int Index = getIndirectIndexBegin(MF); Index <= End; ++Index) {
1080 for (unsigned Chan = 0; Chan < StackWidth; ++Chan) {
1081 unsigned Reg = R600::R600_TReg32RegClass.getRegister((4 * Index) + Chan);
1082 TRI.reserveRegisterTuples(Reserved, Reg);
1083 }
1084 }
1085}
1086
1087const TargetRegisterClass *R600InstrInfo::getIndirectAddrRegClass() const {
1088 return &R600::R600_TReg32_XRegClass;
1089}
1090
1091MachineInstrBuilder R600InstrInfo::buildIndirectWrite(MachineBasicBlock *MBB,
1092 MachineBasicBlock::iterator I,
1093 unsigned ValueReg, unsigned Address,
1094 unsigned OffsetReg) const {
1095 return buildIndirectWrite(MBB, I, ValueReg, Address, OffsetReg, 0);
1096}
1097
1098MachineInstrBuilder R600InstrInfo::buildIndirectWrite(MachineBasicBlock *MBB,
1099 MachineBasicBlock::iterator I,
1100 unsigned ValueReg, unsigned Address,
1101 unsigned OffsetReg,
1102 unsigned AddrChan) const {
1103 unsigned AddrReg;
1104 switch (AddrChan) {
1105 default: llvm_unreachable("Invalid Channel")__builtin_unreachable();
1106 case 0: AddrReg = R600::R600_AddrRegClass.getRegister(Address); break;
1107 case 1: AddrReg = R600::R600_Addr_YRegClass.getRegister(Address); break;
1108 case 2: AddrReg = R600::R600_Addr_ZRegClass.getRegister(Address); break;
1109 case 3: AddrReg = R600::R600_Addr_WRegClass.getRegister(Address); break;
1110 }
1111 MachineInstr *MOVA = buildDefaultInstruction(*MBB, I, R600::MOVA_INT_eg,
1112 R600::AR_X, OffsetReg);
1113 setImmOperand(*MOVA, R600::OpName::write, 0);
1114
1115 MachineInstrBuilder Mov = buildDefaultInstruction(*MBB, I, R600::MOV,
1116 AddrReg, ValueReg)
1117 .addReg(R600::AR_X,
1118 RegState::Implicit | RegState::Kill);
1119 setImmOperand(*Mov, R600::OpName::dst_rel, 1);
1120 return Mov;
1121}
1122
1123MachineInstrBuilder R600InstrInfo::buildIndirectRead(MachineBasicBlock *MBB,
1124 MachineBasicBlock::iterator I,
1125 unsigned ValueReg, unsigned Address,
1126 unsigned OffsetReg) const {
1127 return buildIndirectRead(MBB, I, ValueReg, Address, OffsetReg, 0);
1128}
1129
1130MachineInstrBuilder R600InstrInfo::buildIndirectRead(MachineBasicBlock *MBB,
1131 MachineBasicBlock::iterator I,
1132 unsigned ValueReg, unsigned Address,
1133 unsigned OffsetReg,
1134 unsigned AddrChan) const {
1135 unsigned AddrReg;
1136 switch (AddrChan) {
1137 default: llvm_unreachable("Invalid Channel")__builtin_unreachable();
1138 case 0: AddrReg = R600::R600_AddrRegClass.getRegister(Address); break;
1139 case 1: AddrReg = R600::R600_Addr_YRegClass.getRegister(Address); break;
1140 case 2: AddrReg = R600::R600_Addr_ZRegClass.getRegister(Address); break;
1141 case 3: AddrReg = R600::R600_Addr_WRegClass.getRegister(Address); break;
1142 }
1143 MachineInstr *MOVA = buildDefaultInstruction(*MBB, I, R600::MOVA_INT_eg,
1144 R600::AR_X,
1145 OffsetReg);
1146 setImmOperand(*MOVA, R600::OpName::write, 0);
1147 MachineInstrBuilder Mov = buildDefaultInstruction(*MBB, I, R600::MOV,
1148 ValueReg,
1149 AddrReg)
1150 .addReg(R600::AR_X,
1151 RegState::Implicit | RegState::Kill);
1152 setImmOperand(*Mov, R600::OpName::src0_rel, 1);
1153
1154 return Mov;
1155}
1156
1157int R600InstrInfo::getIndirectIndexBegin(const MachineFunction &MF) const {
1158 const MachineRegisterInfo &MRI = MF.getRegInfo();
1159 const MachineFrameInfo &MFI = MF.getFrameInfo();
1160 int Offset = -1;
1161
1162 if (MFI.getNumObjects() == 0) {
1163 return -1;
1164 }
1165
1166 if (MRI.livein_empty()) {
1167 return 0;
1168 }
1169
1170 const TargetRegisterClass *IndirectRC = getIndirectAddrRegClass();
1171 for (std::pair<unsigned, unsigned> LI : MRI.liveins()) {
1172 Register Reg = LI.first;
1173 if (Reg.isVirtual() || !IndirectRC->contains(Reg))
1174 continue;
1175
1176 unsigned RegIndex;
1177 unsigned RegEnd;
1178 for (RegIndex = 0, RegEnd = IndirectRC->getNumRegs(); RegIndex != RegEnd;
1179 ++RegIndex) {
1180 if (IndirectRC->getRegister(RegIndex) == (unsigned)Reg)
1181 break;
1182 }
1183 Offset = std::max(Offset, (int)RegIndex);
1184 }
1185
1186 return Offset + 1;
1187}
1188
1189int R600InstrInfo::getIndirectIndexEnd(const MachineFunction &MF) const {
1190 int Offset = 0;
1191 const MachineFrameInfo &MFI = MF.getFrameInfo();
1192
1193 // Variable sized objects are not supported
1194 if (MFI.hasVarSizedObjects()) {
1195 return -1;
1196 }
1197
1198 if (MFI.getNumObjects() == 0) {
1199 return -1;
1200 }
1201
1202 const R600Subtarget &ST = MF.getSubtarget<R600Subtarget>();
1203 const R600FrameLowering *TFL = ST.getFrameLowering();
1204
1205 Register IgnoredFrameReg;
1206 Offset = TFL->getFrameIndexReference(MF, -1, IgnoredFrameReg).getFixed();
1207
1208 return getIndirectIndexBegin(MF) + Offset;
1209}
1210
1211unsigned R600InstrInfo::getMaxAlusPerClause() const {
1212 return 115;
1213}
1214
1215MachineInstrBuilder R600InstrInfo::buildDefaultInstruction(MachineBasicBlock &MBB,
1216 MachineBasicBlock::iterator I,
1217 unsigned Opcode,
1218 unsigned DstReg,
1219 unsigned Src0Reg,
1220 unsigned Src1Reg) const {
1221 MachineInstrBuilder MIB = BuildMI(MBB, I, MBB.findDebugLoc(I), get(Opcode),
1222 DstReg); // $dst
1223
1224 if (Src1Reg) {
1225 MIB.addImm(0) // $update_exec_mask
1226 .addImm(0); // $update_predicate
1227 }
1228 MIB.addImm(1) // $write
1229 .addImm(0) // $omod
1230 .addImm(0) // $dst_rel
1231 .addImm(0) // $dst_clamp
1232 .addReg(Src0Reg) // $src0
1233 .addImm(0) // $src0_neg
1234 .addImm(0) // $src0_rel
1235 .addImm(0) // $src0_abs
1236 .addImm(-1); // $src0_sel
1237
1238 if (Src1Reg) {
1239 MIB.addReg(Src1Reg) // $src1
1240 .addImm(0) // $src1_neg
1241 .addImm(0) // $src1_rel
1242 .addImm(0) // $src1_abs
1243 .addImm(-1); // $src1_sel
1244 }
1245
1246 //XXX: The r600g finalizer expects this to be 1, once we've moved the
1247 //scheduling to the backend, we can change the default to 0.
1248 MIB.addImm(1) // $last
1249 .addReg(R600::PRED_SEL_OFF) // $pred_sel
1250 .addImm(0) // $literal
1251 .addImm(0); // $bank_swizzle
1252
1253 return MIB;
1254}
1255
1256#define OPERAND_CASE(Label) \
1257 case Label: { \
1258 static const unsigned Ops[] = \
1259 { \
1260 Label##_X0x40, \
1261 Label##_Y, \
1262 Label##_Z, \
1263 Label##_W \
1264 }; \
1265 return Ops[Slot]; \
1266 }
1267
1268static unsigned getSlotedOps(unsigned Op, unsigned Slot) {
1269 switch (Op) {
1270 OPERAND_CASE(R600::OpName::update_exec_mask)
1271 OPERAND_CASE(R600::OpName::update_pred)
1272 OPERAND_CASE(R600::OpName::write)
1273 OPERAND_CASE(R600::OpName::omod)
1274 OPERAND_CASE(R600::OpName::dst_rel)
1275 OPERAND_CASE(R600::OpName::clamp)
1276 OPERAND_CASE(R600::OpName::src0)
1277 OPERAND_CASE(R600::OpName::src0_neg)
1278 OPERAND_CASE(R600::OpName::src0_rel)
1279 OPERAND_CASE(R600::OpName::src0_abs)
1280 OPERAND_CASE(R600::OpName::src0_sel)
1281 OPERAND_CASE(R600::OpName::src1)
1282 OPERAND_CASE(R600::OpName::src1_neg)
1283 OPERAND_CASE(R600::OpName::src1_rel)
1284 OPERAND_CASE(R600::OpName::src1_abs)
1285 OPERAND_CASE(R600::OpName::src1_sel)
1286 OPERAND_CASE(R600::OpName::pred_sel)
1287 default:
1288 llvm_unreachable("Wrong Operand")__builtin_unreachable();
1289 }
1290}
1291
1292#undef OPERAND_CASE
1293
1294MachineInstr *R600InstrInfo::buildSlotOfVectorInstruction(
1295 MachineBasicBlock &MBB, MachineInstr *MI, unsigned Slot, unsigned DstReg)
1296 const {
1297 assert (MI->getOpcode() == R600::DOT_4 && "Not Implemented")((void)0);
1298 unsigned Opcode;
1299 if (ST.getGeneration() <= AMDGPUSubtarget::R700)
1300 Opcode = R600::DOT4_r600;
1301 else
1302 Opcode = R600::DOT4_eg;
1303 MachineBasicBlock::iterator I = MI;
1304 MachineOperand &Src0 = MI->getOperand(
1305 getOperandIdx(MI->getOpcode(), getSlotedOps(R600::OpName::src0, Slot)));
1306 MachineOperand &Src1 = MI->getOperand(
1307 getOperandIdx(MI->getOpcode(), getSlotedOps(R600::OpName::src1, Slot)));
1308 MachineInstr *MIB = buildDefaultInstruction(
1309 MBB, I, Opcode, DstReg, Src0.getReg(), Src1.getReg());
1310 static const unsigned Operands[14] = {
1311 R600::OpName::update_exec_mask,
1312 R600::OpName::update_pred,
1313 R600::OpName::write,
1314 R600::OpName::omod,
1315 R600::OpName::dst_rel,
1316 R600::OpName::clamp,
1317 R600::OpName::src0_neg,
1318 R600::OpName::src0_rel,
1319 R600::OpName::src0_abs,
1320 R600::OpName::src0_sel,
1321 R600::OpName::src1_neg,
1322 R600::OpName::src1_rel,
1323 R600::OpName::src1_abs,
1324 R600::OpName::src1_sel,
1325 };
1326
1327 MachineOperand &MO = MI->getOperand(getOperandIdx(MI->getOpcode(),
1328 getSlotedOps(R600::OpName::pred_sel, Slot)));
1329 MIB->getOperand(getOperandIdx(Opcode, R600::OpName::pred_sel))
1330 .setReg(MO.getReg());
1331
1332 for (unsigned i = 0; i < 14; i++) {
1333 MachineOperand &MO = MI->getOperand(
1334 getOperandIdx(MI->getOpcode(), getSlotedOps(Operands[i], Slot)));
1335 assert (MO.isImm())((void)0);
1336 setImmOperand(*MIB, Operands[i], MO.getImm());
1337 }
1338 MIB->getOperand(20).setImm(0);
1339 return MIB;
1340}
1341
1342MachineInstr *R600InstrInfo::buildMovImm(MachineBasicBlock &BB,
1343 MachineBasicBlock::iterator I,
1344 unsigned DstReg,
1345 uint64_t Imm) const {
1346 MachineInstr *MovImm = buildDefaultInstruction(BB, I, R600::MOV, DstReg,
1347 R600::ALU_LITERAL_X);
1348 setImmOperand(*MovImm, R600::OpName::literal, Imm);
1349 return MovImm;
1350}
1351
1352MachineInstr *R600InstrInfo::buildMovInstr(MachineBasicBlock *MBB,
1353 MachineBasicBlock::iterator I,
1354 unsigned DstReg, unsigned SrcReg) const {
1355 return buildDefaultInstruction(*MBB, I, R600::MOV, DstReg, SrcReg);
1356}
1357
1358int R600InstrInfo::getOperandIdx(const MachineInstr &MI, unsigned Op) const {
1359 return getOperandIdx(MI.getOpcode(), Op);
1360}
1361
1362int R600InstrInfo::getOperandIdx(unsigned Opcode, unsigned Op) const {
1363 return R600::getNamedOperandIdx(Opcode, Op);
1364}
1365
1366void R600InstrInfo::setImmOperand(MachineInstr &MI, unsigned Op,
1367 int64_t Imm) const {
1368 int Idx = getOperandIdx(MI, Op);
1369 assert(Idx != -1 && "Operand not supported for this instruction.")((void)0);
1370 assert(MI.getOperand(Idx).isImm())((void)0);
1371 MI.getOperand(Idx).setImm(Imm);
1372}
1373
1374//===----------------------------------------------------------------------===//
1375// Instruction flag getters/setters
1376//===----------------------------------------------------------------------===//
1377
1378MachineOperand &R600InstrInfo::getFlagOp(MachineInstr &MI, unsigned SrcIdx,
1379 unsigned Flag) const {
1380 unsigned TargetFlags = get(MI.getOpcode()).TSFlags;
1381 int FlagIndex = 0;
1382 if (Flag != 0) {
1383 // If we pass something other than the default value of Flag to this
1384 // function, it means we are want to set a flag on an instruction
1385 // that uses native encoding.
1386 assert(HAS_NATIVE_OPERANDS(TargetFlags))((void)0);
1387 bool IsOP3 = (TargetFlags & R600_InstFlag::OP3) == R600_InstFlag::OP3;
1388 switch (Flag) {
1389 case MO_FLAG_CLAMP(1 << 0):
1390 FlagIndex = getOperandIdx(MI, R600::OpName::clamp);
1391 break;
1392 case MO_FLAG_MASK(1 << 3):
1393 FlagIndex = getOperandIdx(MI, R600::OpName::write);
1394 break;
1395 case MO_FLAG_NOT_LAST(1 << 5):
1396 case MO_FLAG_LAST(1 << 6):
1397 FlagIndex = getOperandIdx(MI, R600::OpName::last);
1398 break;
1399 case MO_FLAG_NEG(1 << 1):
1400 switch (SrcIdx) {
1401 case 0:
1402 FlagIndex = getOperandIdx(MI, R600::OpName::src0_neg);
1403 break;
1404 case 1:
1405 FlagIndex = getOperandIdx(MI, R600::OpName::src1_neg);
1406 break;
1407 case 2:
1408 FlagIndex = getOperandIdx(MI, R600::OpName::src2_neg);
1409 break;
1410 }
1411 break;
1412
1413 case MO_FLAG_ABS(1 << 2):
1414 assert(!IsOP3 && "Cannot set absolute value modifier for OP3 "((void)0)
1415 "instructions.")((void)0);
1416 (void)IsOP3;
1417 switch (SrcIdx) {
1418 case 0:
1419 FlagIndex = getOperandIdx(MI, R600::OpName::src0_abs);
1420 break;
1421 case 1:
1422 FlagIndex = getOperandIdx(MI, R600::OpName::src1_abs);
1423 break;
1424 }
1425 break;
1426
1427 default:
1428 FlagIndex = -1;
1429 break;
1430 }
1431 assert(FlagIndex != -1 && "Flag not supported for this instruction")((void)0);
1432 } else {
1433 FlagIndex = GET_FLAG_OPERAND_IDX(TargetFlags)(((TargetFlags) >> 7) & 0x3);
1434 assert(FlagIndex != 0 &&((void)0)
1435 "Instruction flags not supported for this instruction")((void)0);
1436 }
1437
1438 MachineOperand &FlagOp = MI.getOperand(FlagIndex);
1439 assert(FlagOp.isImm())((void)0);
1440 return FlagOp;
1441}
1442
1443void R600InstrInfo::addFlag(MachineInstr &MI, unsigned Operand,
1444 unsigned Flag) const {
1445 unsigned TargetFlags = get(MI.getOpcode()).TSFlags;
1446 if (Flag == 0) {
1447 return;
1448 }
1449 if (HAS_NATIVE_OPERANDS(TargetFlags)((TargetFlags) & R600_InstFlag::NATIVE_OPERANDS)) {
1450 MachineOperand &FlagOp = getFlagOp(MI, Operand, Flag);
1451 if (Flag == MO_FLAG_NOT_LAST(1 << 5)) {
1452 clearFlag(MI, Operand, MO_FLAG_LAST(1 << 6));
1453 } else if (Flag == MO_FLAG_MASK(1 << 3)) {
1454 clearFlag(MI, Operand, Flag);
1455 } else {
1456 FlagOp.setImm(1);
1457 }
1458 } else {
1459 MachineOperand &FlagOp = getFlagOp(MI, Operand);
1460 FlagOp.setImm(FlagOp.getImm() | (Flag << (NUM_MO_FLAGS7 * Operand)));
1461 }
1462}
1463
1464void R600InstrInfo::clearFlag(MachineInstr &MI, unsigned Operand,
1465 unsigned Flag) const {
1466 unsigned TargetFlags = get(MI.getOpcode()).TSFlags;
1467 if (HAS_NATIVE_OPERANDS(TargetFlags)((TargetFlags) & R600_InstFlag::NATIVE_OPERANDS)) {
1468 MachineOperand &FlagOp = getFlagOp(MI, Operand, Flag);
1469 FlagOp.setImm(0);
1470 } else {
1471 MachineOperand &FlagOp = getFlagOp(MI);
1472 unsigned InstFlags = FlagOp.getImm();
1473 InstFlags &= ~(Flag << (NUM_MO_FLAGS7 * Operand));
1474 FlagOp.setImm(InstFlags);
1475 }
1476}
1477
1478unsigned R600InstrInfo::getAddressSpaceForPseudoSourceKind(
1479 unsigned Kind) const {
1480 switch (Kind) {
1481 case PseudoSourceValue::Stack:
1482 case PseudoSourceValue::FixedStack:
1483 return AMDGPUAS::PRIVATE_ADDRESS;
1484 case PseudoSourceValue::ConstantPool:
1485 case PseudoSourceValue::GOT:
1486 case PseudoSourceValue::JumpTable:
1487 case PseudoSourceValue::GlobalValueCallEntry:
1488 case PseudoSourceValue::ExternalSymbolCallEntry:
1489 case PseudoSourceValue::TargetCustom:
1490 return AMDGPUAS::CONSTANT_ADDRESS;
1491 }
1492
1493 llvm_unreachable("Invalid pseudo source kind")__builtin_unreachable();
1494}