LLVM 23.0.0git
SPIRVInstructionSelector.cpp
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1//===- SPIRVInstructionSelector.cpp ------------------------------*- C++ -*-==//
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// This file implements the targeting of the InstructionSelector class for
10// SPIRV.
11// TODO: This should be generated by TableGen.
12//
13//===----------------------------------------------------------------------===//
14
15#include "MCTargetDesc/SPIRVBaseInfo.h"
16#include "MCTargetDesc/SPIRVMCTargetDesc.h"
17#include "SPIRV.h"
18#include "SPIRVGlobalRegistry.h"
19#include "SPIRVInstrInfo.h"
20#include "SPIRVRegisterInfo.h"
21#include "SPIRVTargetMachine.h"
22#include "SPIRVTypeInst.h"
23#include "SPIRVUtils.h"
24#include "llvm/ADT/APFloat.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/CodeGen/GlobalISel/GIMatchTableExecutorImpl.h"
27#include "llvm/CodeGen/GlobalISel/GenericMachineInstrs.h"
28#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
29#include "llvm/CodeGen/MachineInstrBuilder.h"
30#include "llvm/CodeGen/MachineRegisterInfo.h"
31#include "llvm/CodeGen/Register.h"
32#include "llvm/CodeGen/TargetOpcodes.h"
33#include "llvm/IR/DiagnosticInfo.h"
34#include "llvm/IR/IntrinsicsSPIRV.h"
35#include "llvm/Support/Debug.h"
36#include "llvm/Support/ErrorHandling.h"
37#include <functional>
38#include <optional>
39
40#define DEBUG_TYPE "spirv-isel"
41
42using namespace llvm;
43namespace CL = SPIRV::OpenCLExtInst;
44namespace GL = SPIRV::GLSLExtInst;
45
46using ExtInstList =
47 std::vector<std::pair<SPIRV::InstructionSet::InstructionSet, uint32_t>>;
48
49namespace {
50
51struct ImageOperands {
52 std::optional<Register> Bias;
53 std::optional<Register> Offset;
54 std::optional<Register> MinLod;
55 std::optional<Register> GradX;
56 std::optional<Register> GradY;
57 std::optional<Register> Lod;
58 std::optional<Register> Compare;
59};
60
61struct SplitParts {
62 SPIRVTypeInst Type = nullptr;
63 Register High;
64 Register Low;
65 bool IsScalar = false;
66};
67
68llvm::SPIRV::SelectionControl::SelectionControl
69getSelectionOperandForImm(int Imm) {
70 if (Imm == 2)
71 return SPIRV::SelectionControl::Flatten;
72 if (Imm == 1)
73 return SPIRV::SelectionControl::DontFlatten;
74 if (Imm == 0)
75 return SPIRV::SelectionControl::None;
76 llvm_unreachable("Invalid immediate");
77}
78
79#define GET_GLOBALISEL_PREDICATE_BITSET
80#include "SPIRVGenGlobalISel.inc"
81#undef GET_GLOBALISEL_PREDICATE_BITSET
82
83class SPIRVInstructionSelector : public InstructionSelector {
84 const SPIRVSubtarget &STI;
85 const SPIRVInstrInfo &TII;
86 const SPIRVRegisterInfo &TRI;
87 const RegisterBankInfo &RBI;
88 SPIRVGlobalRegistry &GR;
89 MachineRegisterInfo *MRI;
90 MachineFunction *HasVRegsReset = nullptr;
91
92 /// We need to keep track of the number we give to anonymous global values to
93 /// generate the same name every time when this is needed.
94 mutable DenseMap<const GlobalValue *, unsigned> UnnamedGlobalIDs;
95 SmallPtrSet<MachineInstr *, 8> DeadMIs;
96
97public:
98 SPIRVInstructionSelector(const SPIRVTargetMachine &TM,
99 const SPIRVSubtarget &ST,
100 const RegisterBankInfo &RBI);
101 void setupMF(MachineFunction &MF, GISelValueTracking *VT,
102 CodeGenCoverage *CoverageInfo, ProfileSummaryInfo *PSI,
103 BlockFrequencyInfo *BFI) override;
104 // Common selection code. Instruction-specific selection occurs in spvSelect.
105 bool select(MachineInstr &I) override;
106 static const char *getName() { return DEBUG_TYPE; }
107
108#define GET_GLOBALISEL_PREDICATES_DECL
109#include "SPIRVGenGlobalISel.inc"
110#undef GET_GLOBALISEL_PREDICATES_DECL
111
112#define GET_GLOBALISEL_TEMPORARIES_DECL
113#include "SPIRVGenGlobalISel.inc"
114#undef GET_GLOBALISEL_TEMPORARIES_DECL
115
116private:
117 void resetVRegsType(MachineFunction &MF);
118 void removeDeadInstruction(MachineInstr &MI) const;
119 void removeOpNamesForDeadMI(MachineInstr &MI) const;
120
121 // tblgen-erated 'select' implementation, used as the initial selector for
122 // the patterns that don't require complex C++.
123 bool selectImpl(MachineInstr &I, CodeGenCoverage &CoverageInfo) const;
124
125 // All instruction-specific selection that didn't happen in "select()".
126 // Is basically a large Switch/Case delegating to all other select method.
127 bool spvSelect(Register ResVReg, SPIRVTypeInst ResType,
128 MachineInstr &I) const;
129
130 bool selectFirstBitHigh(Register ResVReg, SPIRVTypeInst ResType,
131 MachineInstr &I, bool IsSigned) const;
132
133 bool selectFirstBitLow(Register ResVReg, SPIRVTypeInst ResType,
134 MachineInstr &I) const;
135
136 bool selectFirstBitSet16(Register ResVReg, SPIRVTypeInst ResType,
137 MachineInstr &I, unsigned ExtendOpcode,
138 unsigned BitSetOpcode) const;
139
140 bool selectFirstBitSet32(Register ResVReg, SPIRVTypeInst ResType,
141 MachineInstr &I, Register SrcReg,
142 unsigned BitSetOpcode) const;
143
144 bool selectFirstBitSet64(Register ResVReg, SPIRVTypeInst ResType,
145 MachineInstr &I, Register SrcReg,
146 unsigned BitSetOpcode, bool SwapPrimarySide) const;
147
148 bool selectGlobalValue(Register ResVReg, MachineInstr &I,
149 const MachineInstr *Init = nullptr) const;
150
151 bool selectOpWithSrcs(Register ResVReg, SPIRVTypeInst ResType,
152 MachineInstr &I, ArrayRef<Register> SrcRegs,
153 unsigned Opcode) const;
154
155 bool selectUnOp(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
156 unsigned Opcode) const;
157
158 bool selectBitcast(Register ResVReg, SPIRVTypeInst ResType,
159 MachineInstr &I) const;
160
161 bool selectLoad(Register ResVReg, SPIRVTypeInst ResType,
162 MachineInstr &I) const;
163 bool selectAtomicLoad(Register ResVReg, SPIRVTypeInst ResType,
164 MachineInstr &I) const;
165 bool selectStore(MachineInstr &I) const;
166 bool selectAtomicStore(MachineInstr &I) const;
167
168 bool selectStackSave(Register ResVReg, SPIRVTypeInst ResType,
169 MachineInstr &I) const;
170 bool selectStackRestore(MachineInstr &I) const;
171
172 bool selectMemOperation(Register ResVReg, MachineInstr &I) const;
173 Register getOrCreateMemSetGlobal(MachineInstr &I) const;
174 bool selectCopyMemory(MachineInstr &I, Register SrcReg) const;
175 bool selectCopyMemorySized(MachineInstr &I, Register SrcReg) const;
176
177 bool selectAtomicRMW(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
178 unsigned NewOpcode, unsigned NegateOpcode = 0) const;
179
180 bool selectInterlockedAdd(Register ResVReg, SPIRVTypeInst ResType,
181 MachineInstr &I) const;
182
183 bool selectAtomicCmpXchg(Register ResVReg, SPIRVTypeInst ResType,
184 MachineInstr &I) const;
185
186 bool selectFence(MachineInstr &I) const;
187
188 bool selectAddrSpaceCast(Register ResVReg, SPIRVTypeInst ResType,
189 MachineInstr &I) const;
190
191 bool selectPtrMask(Register ResVReg, SPIRVTypeInst ResType,
192 MachineInstr &I) const;
193
194 bool selectAnyOrAll(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
195 unsigned OpType) const;
196
197 bool selectAll(Register ResVReg, SPIRVTypeInst ResType,
198 MachineInstr &I) const;
199
200 bool selectAny(Register ResVReg, SPIRVTypeInst ResType,
201 MachineInstr &I) const;
202
203 bool selectBitreverse(Register ResVReg, SPIRVTypeInst ResType,
204 MachineInstr &I) const;
205
206 bool selectBitreverse16(Register ResVReg, SPIRVTypeInst ResType,
207 MachineInstr &I, Register Op) const;
208
209 bool selectBitreverse64(Register ResVReg, SPIRVTypeInst ResType,
210 MachineInstr &I, Register SrcReg) const;
211
212 bool selectBitreverseNative(Register ResVReg, SPIRVTypeInst ResType,
213 MachineInstr &I, Register Op) const;
214
215 bool selectBuildVector(Register ResVReg, SPIRVTypeInst ResType,
216 MachineInstr &I) const;
217 bool selectSplatVector(Register ResVReg, SPIRVTypeInst ResType,
218 MachineInstr &I) const;
219 bool selectConcatVectors(Register ResVReg, SPIRVTypeInst ResType,
220 MachineInstr &I) const;
221
222 bool selectCmp(Register ResVReg, SPIRVTypeInst ResType,
223 unsigned comparisonOpcode, MachineInstr &I) const;
224 bool selectDiscard(Register ResVReg, SPIRVTypeInst ResType,
225 MachineInstr &I) const;
226
227 bool selectICmp(Register ResVReg, SPIRVTypeInst ResType,
228 MachineInstr &I) const;
229 bool selectFCmp(Register ResVReg, SPIRVTypeInst ResType,
230 MachineInstr &I) const;
231
232 bool selectSign(Register ResVReg, SPIRVTypeInst ResType,
233 MachineInstr &I) const;
234
235 bool selectFloatDot(Register ResVReg, SPIRVTypeInst ResType,
236 MachineInstr &I) const;
237
238 bool selectOverflowArith(Register ResVReg, SPIRVTypeInst ResType,
239 MachineInstr &I, unsigned Opcode) const;
240 bool selectDebugTrap(Register ResVReg, SPIRVTypeInst ResType,
241 MachineInstr &I) const;
242
243 bool selectIntegerDot(Register ResVReg, SPIRVTypeInst ResType,
244 MachineInstr &I, bool Signed) const;
245
246 bool selectIntegerDotExpansion(Register ResVReg, SPIRVTypeInst ResType,
247 MachineInstr &I) const;
248
249 bool selectOpIsInf(Register ResVReg, SPIRVTypeInst ResType,
250 MachineInstr &I) const;
251
252 bool selectOpIsNan(Register ResVReg, SPIRVTypeInst ResType,
253 MachineInstr &I) const;
254
255 bool selectOpIsFinite(Register ResVReg, SPIRVTypeInst ResType,
256 MachineInstr &I) const;
257
258 bool selectOpIsNormal(Register ResVReg, SPIRVTypeInst ResType,
259 MachineInstr &I) const;
260
261 bool selectPopCount(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
262 unsigned Opcode) const;
263
264 bool selectPopCount16(Register ResVReg, SPIRVTypeInst ResType,
265 MachineInstr &I, unsigned ExtOpcode,
266 unsigned Opcode) const;
267
268 bool selectPopCount32(Register ResVReg, SPIRVTypeInst ResType,
269 MachineInstr &I, Register SrcReg,
270 unsigned Opcode) const;
271
272 bool selectPopCount64(Register ResVReg, SPIRVTypeInst ResType,
273 MachineInstr &I, Register SrcReg,
274 unsigned Opcode) const;
275
276 template <bool Signed>
277 bool selectDot4AddPacked(Register ResVReg, SPIRVTypeInst ResType,
278 MachineInstr &I) const;
279 template <bool Signed>
280 bool selectDot4AddPackedExpansion(Register ResVReg, SPIRVTypeInst ResType,
281 MachineInstr &I) const;
282
283 bool selectWavePrefixBitCount(Register ResVReg, SPIRVTypeInst ResType,
284 MachineInstr &I) const;
285
286 template <typename PickOpcodeFn>
287 bool selectWaveReduce(Register ResVReg, SPIRVTypeInst ResType,
288 MachineInstr &I, bool IsUnsigned,
289 PickOpcodeFn &&PickOpcode) const;
290
291 bool selectWaveReduceOp(Register ResVReg, SPIRVTypeInst ResType,
292 MachineInstr &I, unsigned Opcode) const;
293
294 bool selectWaveReduceMax(Register ResVReg, SPIRVTypeInst ResType,
295 MachineInstr &I, bool IsUnsigned) const;
296
297 bool selectWaveReduceMin(Register ResVReg, SPIRVTypeInst ResType,
298 MachineInstr &I, bool IsUnsigned) const;
299
300 bool selectWaveReduceSum(Register ResVReg, SPIRVTypeInst ResType,
301 MachineInstr &I) const;
302
303 bool selectWaveReduceProduct(Register ResVReg, const SPIRVTypeInst ResType,
304 MachineInstr &I) const;
305
306 template <typename PickOpcodeFn>
307 bool selectWaveExclusiveScan(Register ResVReg, SPIRVTypeInst ResType,
308 MachineInstr &I, bool IsUnsigned,
309 PickOpcodeFn &&PickOpcode) const;
310
311 bool selectWaveExclusiveScanSum(Register ResVReg, SPIRVTypeInst ResType,
312 MachineInstr &I) const;
313
314 bool selectWaveExclusiveScanProduct(Register ResVReg, SPIRVTypeInst ResType,
315 MachineInstr &I) const;
316
317 bool selectQuadSwap(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
318 unsigned Direction) const;
319
320 bool selectConst(Register ResVReg, SPIRVTypeInst ResType,
321 MachineInstr &I) const;
322
323 bool selectSelect(Register ResVReg, SPIRVTypeInst ResType,
324 MachineInstr &I) const;
325 bool selectBoolToInt(Register ResVReg, SPIRVTypeInst ResType,
326 Register BooleanVReg, MachineInstr &InsertAt,
327 bool IsSigned) const;
328 bool selectIToF(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
329 bool IsSigned, unsigned Opcode) const;
330 bool selectExt(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
331 bool IsSigned) const;
332
333 bool selectTrunc(Register ResVReg, SPIRVTypeInst ResType,
334 MachineInstr &I) const;
335
336 bool selectSUCmp(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
337 bool IsSigned) const;
338
339 bool selectIntToBool(Register IntReg, Register ResVReg, MachineInstr &I,
340 SPIRVTypeInst intTy, SPIRVTypeInst boolTy) const;
341
342 bool selectOpUndef(Register ResVReg, SPIRVTypeInst ResType,
343 MachineInstr &I) const;
344 bool selectFreeze(Register ResVReg, SPIRVTypeInst ResType,
345 MachineInstr &I) const;
346 bool selectIntrinsic(Register ResVReg, SPIRVTypeInst ResType,
347 MachineInstr &I) const;
348 bool selectExtractVal(Register ResVReg, SPIRVTypeInst ResType,
349 MachineInstr &I) const;
350 bool selectInsertVal(Register ResVReg, SPIRVTypeInst ResType,
351 MachineInstr &I) const;
352 bool selectExtractElt(Register ResVReg, SPIRVTypeInst ResType,
353 MachineInstr &I) const;
354 bool selectInsertElt(Register ResVReg, SPIRVTypeInst ResType,
355 MachineInstr &I) const;
356 bool selectGEP(Register ResVReg, SPIRVTypeInst ResType,
357 MachineInstr &I) const;
358
359 bool selectMaskedGather(Register ResVReg, SPIRVTypeInst ResType,
360 MachineInstr &I) const;
361 bool selectMaskedScatter(MachineInstr &I) const;
362
363 bool diagnoseUnsupported(const MachineInstr &I, const Twine &Msg) const;
364
365 bool selectAbort(MachineInstr &I) const;
366 bool selectTrap(MachineInstr &I) const;
367 bool selectFrameIndex(Register ResVReg, SPIRVTypeInst ResType,
368 MachineInstr &I) const;
369 bool selectAllocaArray(Register ResVReg, SPIRVTypeInst ResType,
370 MachineInstr &I) const;
371
372 bool selectBranch(MachineInstr &I) const;
373 bool selectBranchCond(MachineInstr &I) const;
374
375 bool selectPhi(Register ResVReg, MachineInstr &I) const;
376
377 bool selectExtInst(Register ResVReg, SPIRVTypeInst RestType, MachineInstr &I,
378 GL::GLSLExtInst GLInst, bool setMIFlags = true,
379 bool useMISrc = true,
380 ArrayRef<Register> SrcRegs = {}) const;
381 bool selectExtInst(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
382 CL::OpenCLExtInst CLInst, bool setMIFlags = true,
383 bool useMISrc = true,
384 ArrayRef<Register> SrcRegs = {}) const;
385 bool selectExtInst(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
386 CL::OpenCLExtInst CLInst, GL::GLSLExtInst GLInst,
387 bool setMIFlags = true, bool useMISrc = true,
388 ArrayRef<Register> SrcRegs = {}) const;
389 bool selectExtInst(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
390 const ExtInstList &ExtInsts, bool setMIFlags = true,
391 bool useMISrc = true,
392 ArrayRef<Register> SrcRegs = {}) const;
393
394 bool selectLog10(Register ResVReg, SPIRVTypeInst ResType,
395 MachineInstr &I) const;
396
397 bool selectFpowi(Register ResVReg, SPIRVTypeInst ResType,
398 MachineInstr &I) const;
399
400 bool selectSaturate(Register ResVReg, SPIRVTypeInst ResType,
401 MachineInstr &I) const;
402
403 bool selectWaveOpInst(Register ResVReg, SPIRVTypeInst ResType,
404 MachineInstr &I, unsigned Opcode) const;
405
406 bool selectBarrierInst(MachineInstr &I, unsigned Scope, unsigned MemSem,
407 bool WithGroupSync) const;
408
409 bool selectWaveActiveCountBits(Register ResVReg, SPIRVTypeInst ResType,
410 MachineInstr &I) const;
411
412 bool selectWaveActiveAllEqual(Register ResVReg, SPIRVTypeInst ResType,
413 MachineInstr &I) const;
414
415 bool selectUnmergeValues(MachineInstr &I) const;
416
417 bool selectHandleFromBinding(Register &ResVReg, SPIRVTypeInst ResType,
418 MachineInstr &I) const;
419
420 bool selectCounterHandleFromBinding(Register &ResVReg, SPIRVTypeInst ResType,
421 MachineInstr &I) const;
422
423 bool selectReadImageIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
424 MachineInstr &I) const;
425 bool selectGetDimensionsIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
426 MachineInstr &I) const;
427 bool selectGetDimensionsLevelsIntrinsic(Register &ResVReg,
428 SPIRVTypeInst ResType,
429 MachineInstr &I) const;
430 bool selectGetDimensionsMSIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
431 MachineInstr &I) const;
432 bool
433 selectImageQuerySize(Register ImageReg, Register &ResVReg, MachineInstr &I,
434 std::optional<Register> LodReg = std::nullopt) const;
435 bool selectSampleBasicIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
436 MachineInstr &I) const;
437 bool selectCalculateLodIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
438 MachineInstr &I) const;
439 bool selectSampleBiasIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
440 MachineInstr &I) const;
441 bool selectSampleGradIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
442 MachineInstr &I) const;
443 bool selectSampleLevelIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
444 MachineInstr &I) const;
445 bool selectLoadLevelIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
446 MachineInstr &I) const;
447 bool selectSampleCmpIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
448 MachineInstr &I) const;
449 bool selectSampleCmpLevelZeroIntrinsic(Register &ResVReg,
450 SPIRVTypeInst ResType,
451 MachineInstr &I) const;
452 bool selectGatherIntrinsic(Register &ResVReg, SPIRVTypeInst ResType,
453 MachineInstr &I) const;
454 bool selectImageWriteIntrinsic(MachineInstr &I) const;
455 bool selectResourceGetPointer(Register &ResVReg, SPIRVTypeInst ResType,
456 MachineInstr &I) const;
457 bool selectPushConstantGetPointer(Register &ResVReg, SPIRVTypeInst ResType,
458 MachineInstr &I) const;
459 bool selectResourceNonUniformIndex(Register &ResVReg, SPIRVTypeInst ResType,
460 MachineInstr &I) const;
461 bool selectModf(Register ResVReg, SPIRVTypeInst ResType,
462 MachineInstr &I) const;
463 bool selectUpdateCounter(Register &ResVReg, SPIRVTypeInst ResType,
464 MachineInstr &I) const;
465 bool selectFrexp(Register ResVReg, SPIRVTypeInst ResType,
466 MachineInstr &I) const;
467 bool selectSincos(Register ResVReg, SPIRVTypeInst ResType,
468 MachineInstr &I) const;
469 bool selectExp10(Register ResVReg, SPIRVTypeInst ResType,
470 MachineInstr &I) const;
471 bool selectDerivativeInst(Register ResVReg, SPIRVTypeInst ResType,
472 MachineInstr &I, const unsigned DPdOpCode) const;
473 // Utilities
474 Register buildI32Constant(uint32_t Val, MachineInstr &I,
475 SPIRVTypeInst ResType = nullptr) const;
476 Register buildI32ConstantInEntryBlock(uint32_t Val, MachineInstr &I,
477 SPIRVTypeInst ResType = nullptr) const;
478
479 Register buildZerosVal(SPIRVTypeInst ResType, MachineInstr &I) const;
480 bool isScalarOrVectorIntConstantZero(Register Reg) const;
481 Register buildZerosValF(SPIRVTypeInst ResType, MachineInstr &I) const;
482 Register buildOnesVal(bool AllOnes, SPIRVTypeInst ResType,
483 MachineInstr &I) const;
484 Register buildOnesValF(SPIRVTypeInst ResType, MachineInstr &I) const;
485
486 bool wrapIntoSpecConstantOp(MachineInstr &I,
487 SmallVector<Register> &CompositeArgs) const;
488
489 Register getUcharPtrTypeReg(MachineInstr &I,
490 SPIRV::StorageClass::StorageClass SC) const;
491 MachineInstrBuilder buildSpecConstantOp(MachineInstr &I, Register Dest,
492 Register Src, Register DestType,
493 uint32_t Opcode) const;
494 MachineInstrBuilder buildConstGenericPtr(MachineInstr &I, Register SrcPtr,
495 SPIRVTypeInst SrcPtrTy) const;
496 Register buildPointerToResource(SPIRVTypeInst ResType,
497 SPIRV::StorageClass::StorageClass SC,
498 uint32_t Set, uint32_t Binding,
499 uint32_t ArraySize, Register IndexReg,
500 StringRef Name,
501 MachineIRBuilder MIRBuilder) const;
502 SPIRVTypeInst widenTypeToVec4(SPIRVTypeInst Type, MachineInstr &I) const;
503 bool extractSubvector(Register &ResVReg, SPIRVTypeInst ResType,
504 Register &ReadReg, MachineInstr &InsertionPoint) const;
505 bool generateImageReadOrFetch(Register &ResVReg, SPIRVTypeInst ResType,
506 Register ImageReg, Register IdxReg,
507 DebugLoc Loc, MachineInstr &Pos,
508 const ImageOperands *ImOps = nullptr) const;
509 bool generateSampleImage(Register ResVReg, SPIRVTypeInst ResType,
510 Register ImageReg, Register SamplerReg,
511 Register CoordinateReg, const ImageOperands &ImOps,
512 DebugLoc Loc, MachineInstr &I) const;
513 bool BuildCOPY(Register DestReg, Register SrcReg, MachineInstr &I) const;
514 bool loadVec3BuiltinInputID(SPIRV::BuiltIn::BuiltIn BuiltInValue,
515 Register ResVReg, SPIRVTypeInst ResType,
516 MachineInstr &I) const;
517 bool loadBuiltinInputID(SPIRV::BuiltIn::BuiltIn BuiltInValue,
518 Register ResVReg, SPIRVTypeInst ResType,
519 MachineInstr &I) const;
520 bool loadHandleBeforePosition(Register &HandleReg, SPIRVTypeInst ResType,
521 GIntrinsic &HandleDef, MachineInstr &Pos) const;
522 void decorateUsesAsNonUniform(Register &NonUniformReg) const;
523 bool errorIfInstrOutsideShader(MachineInstr &I) const;
524
525 std::optional<SplitParts> splitEvenOddLanes(Register PopCountReg,
526 unsigned ComponentCount,
527 MachineInstr &I,
528 SPIRVTypeInst I32Type) const;
529
530 bool
531 handle64BitOverflow(Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
532 Register SrcReg, unsigned int Opcode,
533 std::function<bool(Register, SPIRVTypeInst,
534 MachineInstr &, Register, unsigned)>
535 CallbackFunction) const;
536};
537
538bool sampledTypeIsSignedInteger(const llvm::Type *HandleType) {
539 const TargetExtType *TET = cast<TargetExtType>(HandleType);
540 if (TET->getTargetExtName() == "spirv.Image") {
541 return false;
542 }
543 assert(TET->getTargetExtName() == "spirv.SignedImage");
544 return TET->getTypeParameter(0)->isIntegerTy();
545}
546} // end anonymous namespace
547
548#define GET_GLOBALISEL_IMPL
549#include "SPIRVGenGlobalISel.inc"
550#undef GET_GLOBALISEL_IMPL
551
552SPIRVInstructionSelector::SPIRVInstructionSelector(const SPIRVTargetMachine &TM,
553 const SPIRVSubtarget &ST,
554 const RegisterBankInfo &RBI)
555 : InstructionSelector(), STI(ST), TII(*ST.getInstrInfo()),
556 TRI(*ST.getRegisterInfo()), RBI(RBI), GR(*ST.getSPIRVGlobalRegistry()),
557 MRI(nullptr),
558#define GET_GLOBALISEL_PREDICATES_INIT
559#include "SPIRVGenGlobalISel.inc"
560#undef GET_GLOBALISEL_PREDICATES_INIT
561#define GET_GLOBALISEL_TEMPORARIES_INIT
562#include "SPIRVGenGlobalISel.inc"
563#undef GET_GLOBALISEL_TEMPORARIES_INIT
564{
565}
566
567void SPIRVInstructionSelector::setupMF(MachineFunction &MF,
568 GISelValueTracking *VT,
569 CodeGenCoverage *CoverageInfo,
570 ProfileSummaryInfo *PSI,
571 BlockFrequencyInfo *BFI) {
572 MRI = &MF.getRegInfo();
573 GR.setCurrentFunc(MF);
574 InstructionSelector::setupMF(MF, VT, CoverageInfo, PSI, BFI);
575}
576
577// Ensure that register classes correspond to pattern matching rules.
578void SPIRVInstructionSelector::resetVRegsType(MachineFunction &MF) {
579 if (HasVRegsReset == &MF)
580 return;
581 HasVRegsReset = &MF;
582
583 MachineRegisterInfo &MRI = MF.getRegInfo();
584 for (unsigned I = 0, E = MRI.getNumVirtRegs(); I != E; ++I) {
585 Register Reg = Register::index2VirtReg(I);
586 LLT RegType = MRI.getType(Reg);
587 if (RegType.isScalar())
588 MRI.setType(Reg, LLT::scalar(64));
589 else if (RegType.isPointer())
590 MRI.setType(Reg, LLT::pointer(0, 64));
591 else if (RegType.isVector())
592 MRI.setType(Reg, LLT::fixed_vector(2, LLT::scalar(64)));
593 }
594 for (const auto &MBB : MF) {
595 for (const auto &MI : MBB) {
596 if (isPreISelGenericOpcode(MI.getOpcode()))
597 GR.erase(&MI);
598 if (MI.getOpcode() != SPIRV::ASSIGN_TYPE)
599 continue;
600
601 Register DstReg = MI.getOperand(0).getReg();
602 LLT DstType = MRI.getType(DstReg);
603 Register SrcReg = MI.getOperand(1).getReg();
604 LLT SrcType = MRI.getType(SrcReg);
605 if (DstType != SrcType)
606 MRI.setType(DstReg, MRI.getType(SrcReg));
607
608 const TargetRegisterClass *DstRC = MRI.getRegClassOrNull(DstReg);
609 const TargetRegisterClass *SrcRC = MRI.getRegClassOrNull(SrcReg);
610 if (DstRC != SrcRC && SrcRC)
611 MRI.setRegClass(DstReg, SrcRC);
612 }
613 }
614}
615
616// Return true if the MachineInstr represents a constant register
617static bool isConstReg(MachineRegisterInfo *MRI, MachineInstr *OpDef) {
618
619 SmallVector<MachineInstr *> Stack = {OpDef};
620 SmallPtrSet<MachineInstr *, 4> Visited;
621
622 while (!Stack.empty()) {
623 MachineInstr *MI = Stack.pop_back_val();
624 MI = passCopy(MI, MRI);
625 if (!Visited.insert(MI).second)
626 continue;
627 switch (MI->getOpcode()) {
628 case TargetOpcode::G_INTRINSIC:
629 case TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS:
630 case TargetOpcode::G_INTRINSIC_CONVERGENT_W_SIDE_EFFECTS: {
631 GIntrinsic *GIntr = cast<GIntrinsic>(MI);
632 unsigned IntrID = GIntr->getIntrinsicID();
633 if (IntrID != Intrinsic::spv_const_composite &&
634 IntrID != Intrinsic::spv_undef && IntrID != Intrinsic::spv_poison)
635 return false;
636 continue;
637 }
638 case TargetOpcode::G_BUILD_VECTOR:
639 case TargetOpcode::G_SPLAT_VECTOR:
640 for (unsigned i = OpDef->getNumExplicitDefs();
641 i < OpDef->getNumOperands(); i++) {
642 if (!OpDef->getOperand(i).isReg())
643 continue;
644 MachineInstr *OpNestedDef =
645 MRI->getVRegDef(OpDef->getOperand(i).getReg());
646 Stack.push_back(OpNestedDef);
647 }
648 continue;
649 case TargetOpcode::G_CONSTANT:
650 case TargetOpcode::G_FCONSTANT:
651 case TargetOpcode::G_IMPLICIT_DEF:
652 case SPIRV::OpConstantTrue:
653 case SPIRV::OpConstantFalse:
654 case SPIRV::OpConstantI:
655 case SPIRV::OpConstantF:
656 case SPIRV::OpConstantComposite:
657 case SPIRV::OpConstantCompositeContinuedINTEL:
658 case SPIRV::OpConstantSampler:
659 case SPIRV::OpConstantNull:
660 case SPIRV::OpUndef:
661 case SPIRV::OpPoisonKHR:
662 case SPIRV::OpConstantFunctionPointerINTEL:
663 continue;
664 default:
665 return false;
666 }
667 }
668 return true;
669}
670
671// Return true if the virtual register represents a constant
672static bool isConstReg(MachineRegisterInfo *MRI, Register OpReg) {
673 if (MachineInstr *OpDef = MRI->getVRegDef(OpReg))
674 return isConstReg(MRI, OpDef);
675 return false;
676}
677
678// TODO(168736): We should make this either a flag in tabelgen
679// or reduce our dependence on the global registry, so we can remove this
680// function. It can easily be missed when new intrinsics are added.
681
682// Most SPIR-V intrinsics are considered to have side-effects in their tablegen
683// definition because they are referenced in the global registry. This is a list
684// of intrinsics that have no side effects other than their references in the
685// global registry.
686static bool intrinsicHasSideEffects(Intrinsic::ID ID) {
687 switch (ID) {
688 // This is not an exhaustive list and may need to be updated.
689 case Intrinsic::spv_all:
690 case Intrinsic::spv_alloca:
691 case Intrinsic::spv_any:
692 case Intrinsic::spv_bitcast:
693 case Intrinsic::spv_const_composite:
694 case Intrinsic::spv_cross:
695 case Intrinsic::spv_degrees:
696 case Intrinsic::spv_distance:
697 case Intrinsic::spv_extractelt:
698 case Intrinsic::spv_extractv:
699 case Intrinsic::spv_faceforward:
700 case Intrinsic::spv_fdot:
701 case Intrinsic::spv_firstbitlow:
702 case Intrinsic::spv_firstbitshigh:
703 case Intrinsic::spv_firstbituhigh:
704 case Intrinsic::spv_frac:
705 case Intrinsic::spv_gep:
706 case Intrinsic::spv_global_offset:
707 case Intrinsic::spv_global_size:
708 case Intrinsic::spv_group_id:
709 case Intrinsic::spv_insertelt:
710 case Intrinsic::spv_insertv:
711 case Intrinsic::spv_isinf:
712 case Intrinsic::spv_isnan:
713 case Intrinsic::spv_isfinite:
714 case Intrinsic::spv_isnormal:
715 case Intrinsic::spv_lerp:
716 case Intrinsic::spv_length:
717 case Intrinsic::spv_normalize:
718 case Intrinsic::spv_num_subgroups:
719 case Intrinsic::spv_num_workgroups:
720 case Intrinsic::spv_ptrcast:
721 case Intrinsic::spv_radians:
722 case Intrinsic::spv_reflect:
723 case Intrinsic::spv_refract:
724 case Intrinsic::spv_resource_getbasepointer:
725 case Intrinsic::spv_resource_getpointer:
726 case Intrinsic::spv_resource_handlefrombinding:
727 case Intrinsic::spv_resource_handlefromimplicitbinding:
728 case Intrinsic::spv_resource_nonuniformindex:
729 case Intrinsic::spv_resource_sample:
730 case Intrinsic::spv_rsqrt:
731 case Intrinsic::spv_saturate:
732 case Intrinsic::spv_sdot:
733 case Intrinsic::spv_sign:
734 case Intrinsic::spv_smoothstep:
735 case Intrinsic::spv_step:
736 case Intrinsic::spv_subgroup_id:
737 case Intrinsic::spv_subgroup_local_invocation_id:
738 case Intrinsic::spv_subgroup_max_size:
739 case Intrinsic::spv_subgroup_size:
740 case Intrinsic::spv_thread_id:
741 case Intrinsic::spv_thread_id_in_group:
742 case Intrinsic::spv_udot:
743 case Intrinsic::spv_undef:
744 case Intrinsic::spv_value_md:
745 case Intrinsic::spv_workgroup_size:
746 return false;
747 default:
748 return true;
749 }
750}
751
752// TODO(168736): We should make this either a flag in tabelgen
753// or reduce our dependence on the global registry, so we can remove this
754// function. It can easily be missed when new intrinsics are added.
755static bool isOpcodeWithNoSideEffects(unsigned Opcode) {
756 switch (Opcode) {
757 case SPIRV::OpTypeVoid:
758 case SPIRV::OpTypeBool:
759 case SPIRV::OpTypeInt:
760 case SPIRV::OpTypeFloat:
761 case SPIRV::OpTypeVector:
762 case SPIRV::OpTypeMatrix:
763 case SPIRV::OpTypeImage:
764 case SPIRV::OpTypeSampler:
765 case SPIRV::OpTypeSampledImage:
766 case SPIRV::OpTypeArray:
767 case SPIRV::OpTypeRuntimeArray:
768 case SPIRV::OpTypeStruct:
769 case SPIRV::OpTypeOpaque:
770 case SPIRV::OpTypePointer:
771 case SPIRV::OpTypeFunction:
772 case SPIRV::OpTypeEvent:
773 case SPIRV::OpTypeDeviceEvent:
774 case SPIRV::OpTypeReserveId:
775 case SPIRV::OpTypeQueue:
776 case SPIRV::OpTypePipe:
777 case SPIRV::OpTypeForwardPointer:
778 case SPIRV::OpTypePipeStorage:
779 case SPIRV::OpTypeNamedBarrier:
780 case SPIRV::OpTypeAccelerationStructureNV:
781 case SPIRV::OpTypeCooperativeMatrixNV:
782 case SPIRV::OpTypeCooperativeMatrixKHR:
783 return true;
784 default:
785 return false;
786 }
787}
788
789bool isDead(const MachineInstr &MI, const MachineRegisterInfo &MRI) {
790 // If there are no definitions, then assume there is some other
791 // side-effect that makes this instruction live.
792 if (MI.getNumDefs() == 0)
793 return false;
794
795 for (const auto &MO : MI.all_defs()) {
796 Register Reg = MO.getReg();
797 if (Reg.isPhysical()) {
798 LLVM_DEBUG(dbgs() << "Not dead: def of physical register " << Reg);
799 return false;
800 }
801 for (const auto &UseMI : MRI.use_nodbg_instructions(Reg)) {
802 if (UseMI.getOpcode() != SPIRV::OpName) {
803 LLVM_DEBUG(dbgs() << "Not dead: def " << MO << " has use in " << UseMI);
804 return false;
805 }
806 }
807 }
808
809 if (MI.getOpcode() == TargetOpcode::LOCAL_ESCAPE || MI.isFakeUse() ||
810 MI.isLifetimeMarker()) {
811 LLVM_DEBUG(
812 dbgs()
813 << "Not dead: Opcode is LOCAL_ESCAPE, fake use, or lifetime marker.\n");
814 return false;
815 }
816 if (MI.isPHI()) {
817 LLVM_DEBUG(dbgs() << "Dead: Phi instruction with no uses.\n");
818 return true;
819 }
820
821 // It is possible that the only side effect is that the instruction is
822 // referenced in the global registry. If that is the only side effect, the
823 // intrinsic is dead.
824 if (MI.getOpcode() == TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS ||
825 MI.getOpcode() == TargetOpcode::G_INTRINSIC_CONVERGENT_W_SIDE_EFFECTS) {
826 const auto &Intr = cast<GIntrinsic>(MI);
827 if (!intrinsicHasSideEffects(Intr.getIntrinsicID())) {
828 LLVM_DEBUG(dbgs() << "Dead: Intrinsic with no real side effects.\n");
829 return true;
830 }
831 }
832
833 if (MI.mayStore() || MI.isCall() ||
834 (MI.mayLoad() && MI.hasOrderedMemoryRef()) || MI.isPosition() ||
835 MI.isDebugInstr() || MI.isTerminator() || MI.isJumpTableDebugInfo()) {
836 LLVM_DEBUG(dbgs() << "Not dead: instruction has side effects.\n");
837 return false;
838 }
839
840 if (isPreISelGenericOpcode(MI.getOpcode())) {
841 // TODO: Is there a generic way to check if the opcode has side effects?
842 LLVM_DEBUG(dbgs() << "Dead: Generic opcode with no uses.\n");
843 return true;
844 }
845
846 if (isOpcodeWithNoSideEffects(MI.getOpcode())) {
847 LLVM_DEBUG(dbgs() << "Dead: known opcode with no side effects\n");
848 return true;
849 }
850
851 return false;
852}
853
854void SPIRVInstructionSelector::removeOpNamesForDeadMI(MachineInstr &MI) const {
855 // Delete the OpName that uses the result if there is one.
856 for (const auto &MO : MI.all_defs()) {
857 Register Reg = MO.getReg();
858 if (Reg.isPhysical())
859 continue;
860 SmallVector<MachineInstr *, 4> UselessOpNames;
861 for (MachineInstr &UseMI : MRI->use_nodbg_instructions(Reg)) {
862 assert(UseMI.getOpcode() == SPIRV::OpName &&
863 "There is still a use of the dead function.");
864 UselessOpNames.push_back(&UseMI);
865 }
866 for (MachineInstr *OpNameMI : UselessOpNames) {
867 GR.invalidateMachineInstr(OpNameMI);
868 OpNameMI->eraseFromParent();
869 }
870 }
871}
872
873void SPIRVInstructionSelector::removeDeadInstruction(MachineInstr &MI) const {
874 salvageDebugInfo(*MRI, MI);
875 GR.invalidateMachineInstr(&MI);
876 removeOpNamesForDeadMI(MI);
877 MI.eraseFromParent();
878}
879
880bool SPIRVInstructionSelector::select(MachineInstr &I) {
881 resetVRegsType(*I.getParent()->getParent());
882
883 assert(I.getParent() && "Instruction should be in a basic block!");
884 assert(I.getParent()->getParent() && "Instruction should be in a function!");
885
886 LLVM_DEBUG(dbgs() << "Checking if instruction is dead: " << I;);
887 if (isDead(I, *MRI)) {
888 LLVM_DEBUG(dbgs() << "Instruction is dead.\n");
889 removeDeadInstruction(I);
890 return true;
891 }
892
893 Register Opcode = I.getOpcode();
894 // If it's not a GMIR instruction, we've selected it already.
895 if (!isPreISelGenericOpcode(Opcode)) {
896 if (Opcode == SPIRV::ASSIGN_TYPE) { // These pseudos aren't needed any more.
897 Register DstReg = I.getOperand(0).getReg();
898 Register SrcReg = I.getOperand(1).getReg();
899 auto *Def = MRI->getVRegDef(SrcReg);
900 if (isTypeFoldingSupported(Def->getOpcode()) &&
901 Def->getOpcode() != TargetOpcode::G_CONSTANT &&
902 Def->getOpcode() != TargetOpcode::G_FCONSTANT) {
903 if (Def->getOpcode() == TargetOpcode::G_SELECT) {
904 Register SelectDstReg = Def->getOperand(0).getReg();
905 bool SuccessToSelectSelect [[maybe_unused]] = selectSelect(
906 SelectDstReg, GR.getSPIRVTypeForVReg(SelectDstReg), *Def);
907 assert(SuccessToSelectSelect);
908 GR.invalidateMachineInstr(Def);
909 Def->eraseFromParent();
910 MRI->replaceRegWith(DstReg, SelectDstReg);
911 GR.invalidateMachineInstr(&I);
912 I.eraseFromParent();
913 return true;
914 }
915
916 bool Res = selectImpl(I, *CoverageInfo);
917 LLVM_DEBUG({
918 if (!Res && Def->getOpcode() != TargetOpcode::G_CONSTANT) {
919 dbgs() << "Unexpected pattern in ASSIGN_TYPE.\nInstruction: ";
920 I.print(dbgs());
921 }
922 });
923 assert(Res || Def->getOpcode() == TargetOpcode::G_CONSTANT);
924 if (Res) {
925 if (!isTriviallyDead(*Def, *MRI) && isDead(*Def, *MRI))
926 DeadMIs.insert(Def);
927 return Res;
928 }
929 }
930 MRI->setRegClass(SrcReg, MRI->getRegClass(DstReg));
931 MRI->replaceRegWith(SrcReg, DstReg);
932 GR.invalidateMachineInstr(&I);
933 I.eraseFromParent();
934 return true;
935 } else if (I.getNumDefs() == 1) {
936 // Make all vregs 64 bits (for SPIR-V IDs).
937 MRI->setType(I.getOperand(0).getReg(), LLT::scalar(64));
938 }
939 constrainSelectedInstRegOperands(I, TII, TRI, RBI);
940 return true;
941 }
942
943 if (DeadMIs.contains(&I)) {
944 // if the instruction has been already made dead by folding it away
945 // erase it
946 LLVM_DEBUG(dbgs() << "Instruction is folded and dead.\n");
947 removeDeadInstruction(I);
948 DeadMIs.erase(&I);
949 return true;
950 }
951
952 if (I.getNumOperands() != I.getNumExplicitOperands()) {
953 LLVM_DEBUG(errs() << "Generic instr has unexpected implicit operands\n");
954 return false;
955 }
956
957 // Common code for getting return reg+type, and removing selected instr
958 // from parent occurs here. Instr-specific selection happens in spvSelect().
959 bool HasDefs = I.getNumDefs() > 0;
960 Register ResVReg = HasDefs ? I.getOperand(0).getReg() : Register(0);
961 SPIRVTypeInst ResType = HasDefs ? GR.getSPIRVTypeForVReg(ResVReg) : nullptr;
962 assert(!HasDefs || ResType || I.getOpcode() == TargetOpcode::G_GLOBAL_VALUE ||
963 I.getOpcode() == TargetOpcode::G_IMPLICIT_DEF);
964 if (spvSelect(ResVReg, ResType, I)) {
965 if (HasDefs) // Make all vregs 64 bits (for SPIR-V IDs).
966 for (unsigned i = 0; i < I.getNumDefs(); ++i)
967 MRI->setType(I.getOperand(i).getReg(), LLT::scalar(64));
968 GR.invalidateMachineInstr(&I);
969 I.eraseFromParent();
970 return true;
971 }
972 return false;
973}
974
975static bool mayApplyGenericSelection(unsigned Opcode) {
976 switch (Opcode) {
977 case TargetOpcode::G_CONSTANT:
978 case TargetOpcode::G_FCONSTANT:
979 return false;
980 }
981 return isTypeFoldingSupported(Opcode);
982}
983
984bool SPIRVInstructionSelector::BuildCOPY(Register DestReg, Register SrcReg,
985 MachineInstr &I) const {
986 const TargetRegisterClass *DstRC = MRI->getRegClassOrNull(DestReg);
987 const TargetRegisterClass *SrcRC = MRI->getRegClassOrNull(SrcReg);
988 if (DstRC != SrcRC && SrcRC)
989 MRI->setRegClass(DestReg, SrcRC);
990 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(TargetOpcode::COPY))
991 .addDef(DestReg)
992 .addUse(SrcReg)
993 .constrainAllUses(TII, TRI, RBI);
994 return true;
995}
996
997bool SPIRVInstructionSelector::spvSelect(Register ResVReg,
998 SPIRVTypeInst ResType,
999 MachineInstr &I) const {
1000 const unsigned Opcode = I.getOpcode();
1001 if (mayApplyGenericSelection(Opcode))
1002 return selectImpl(I, *CoverageInfo);
1003 switch (Opcode) {
1004 case TargetOpcode::G_CONSTANT:
1005 case TargetOpcode::G_FCONSTANT:
1006 return selectConst(ResVReg, ResType, I);
1007 case TargetOpcode::G_GLOBAL_VALUE:
1008 return selectGlobalValue(ResVReg, I);
1009 case TargetOpcode::G_IMPLICIT_DEF:
1010 return selectOpUndef(ResVReg, ResType, I);
1011 case TargetOpcode::G_FREEZE:
1012 return selectFreeze(ResVReg, ResType, I);
1013
1014 case TargetOpcode::G_INTRINSIC:
1015 case TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS:
1016 case TargetOpcode::G_INTRINSIC_CONVERGENT:
1017 case TargetOpcode::G_INTRINSIC_CONVERGENT_W_SIDE_EFFECTS:
1018 return selectIntrinsic(ResVReg, ResType, I);
1019 case TargetOpcode::G_BITREVERSE:
1020 return selectBitreverse(ResVReg, ResType, I);
1021
1022 case TargetOpcode::G_BUILD_VECTOR:
1023 return selectBuildVector(ResVReg, ResType, I);
1024 case TargetOpcode::G_SPLAT_VECTOR:
1025 return selectSplatVector(ResVReg, ResType, I);
1026 case TargetOpcode::G_CONCAT_VECTORS:
1027 return selectConcatVectors(ResVReg, ResType, I);
1028
1029 case TargetOpcode::G_SHUFFLE_VECTOR: {
1030 MachineBasicBlock &BB = *I.getParent();
1031 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorShuffle))
1032 .addDef(ResVReg)
1033 .addUse(GR.getSPIRVTypeID(ResType))
1034 .addUse(I.getOperand(1).getReg())
1035 .addUse(I.getOperand(2).getReg());
1036 for (auto V : I.getOperand(3).getShuffleMask())
1037 MIB.addImm(V);
1038 MIB.constrainAllUses(TII, TRI, RBI);
1039 return true;
1040 }
1041 case TargetOpcode::G_MEMMOVE:
1042 case TargetOpcode::G_MEMCPY:
1043 case TargetOpcode::G_MEMCPY_INLINE:
1044 case TargetOpcode::G_MEMSET:
1045 case TargetOpcode::G_MEMSET_INLINE:
1046 return selectMemOperation(ResVReg, I);
1047
1048 case TargetOpcode::G_ICMP:
1049 return selectICmp(ResVReg, ResType, I);
1050 case TargetOpcode::G_FCMP:
1051 return selectFCmp(ResVReg, ResType, I);
1052
1053 case TargetOpcode::G_FRAME_INDEX:
1054 return selectFrameIndex(ResVReg, ResType, I);
1055
1056 case TargetOpcode::G_LOAD:
1057 return selectLoad(ResVReg, ResType, I);
1058 case TargetOpcode::G_STORE:
1059 return selectStore(I);
1060
1061 case TargetOpcode::G_BR:
1062 return selectBranch(I);
1063 case TargetOpcode::G_BRCOND:
1064 return selectBranchCond(I);
1065
1066 case TargetOpcode::G_PHI:
1067 return selectPhi(ResVReg, I);
1068
1069 case TargetOpcode::G_FPTOSI:
1070 return selectUnOp(ResVReg, ResType, I, SPIRV::OpConvertFToS);
1071 case TargetOpcode::G_FPTOUI:
1072 return selectUnOp(ResVReg, ResType, I, SPIRV::OpConvertFToU);
1073
1074 case TargetOpcode::G_FPTOSI_SAT:
1075 return selectUnOp(ResVReg, ResType, I, SPIRV::OpConvertFToS);
1076 case TargetOpcode::G_FPTOUI_SAT:
1077 return selectUnOp(ResVReg, ResType, I, SPIRV::OpConvertFToU);
1078
1079 case TargetOpcode::G_SITOFP:
1080 return selectIToF(ResVReg, ResType, I, true, SPIRV::OpConvertSToF);
1081 case TargetOpcode::G_UITOFP:
1082 return selectIToF(ResVReg, ResType, I, false, SPIRV::OpConvertUToF);
1083
1084 case TargetOpcode::G_CTPOP:
1085 return selectPopCount(ResVReg, ResType, I, SPIRV::OpBitCount);
1086 case TargetOpcode::G_SMIN:
1087 return selectExtInst(ResVReg, ResType, I, CL::s_min, GL::SMin);
1088 case TargetOpcode::G_UMIN:
1089 return selectExtInst(ResVReg, ResType, I, CL::u_min, GL::UMin);
1090
1091 case TargetOpcode::G_SMAX:
1092 return selectExtInst(ResVReg, ResType, I, CL::s_max, GL::SMax);
1093 case TargetOpcode::G_UMAX:
1094 return selectExtInst(ResVReg, ResType, I, CL::u_max, GL::UMax);
1095
1096 case TargetOpcode::G_SCMP:
1097 return selectSUCmp(ResVReg, ResType, I, true);
1098 case TargetOpcode::G_UCMP:
1099 return selectSUCmp(ResVReg, ResType, I, false);
1100 case TargetOpcode::G_LROUND:
1101 case TargetOpcode::G_LLROUND: {
1102 Register regForLround =
1103 MRI->createVirtualRegister(MRI->getRegClass(ResVReg), "lround");
1104 MRI->setRegClass(regForLround, &SPIRV::iIDRegClass);
1105 GR.assignSPIRVTypeToVReg(GR.getSPIRVTypeForVReg(I.getOperand(1).getReg()),
1106 regForLround, *(I.getParent()->getParent()));
1107 selectExtInst(regForLround, GR.getSPIRVTypeForVReg(regForLround), I,
1108 CL::round, GL::Round, /* setMIFlags */ false);
1109 MachineBasicBlock &BB = *I.getParent();
1110 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConvertFToS))
1111 .addDef(ResVReg)
1112 .addUse(GR.getSPIRVTypeID(ResType))
1113 .addUse(regForLround);
1114 MIB.constrainAllUses(TII, TRI, RBI);
1115 return true;
1116 }
1117 case TargetOpcode::G_STRICT_FMA:
1118 case TargetOpcode::G_FMA: {
1119 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_fma)) {
1120 MachineBasicBlock &BB = *I.getParent();
1121 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpFmaKHR))
1122 .addDef(ResVReg)
1123 .addUse(GR.getSPIRVTypeID(ResType))
1124 .addUse(I.getOperand(1).getReg())
1125 .addUse(I.getOperand(2).getReg())
1126 .addUse(I.getOperand(3).getReg())
1127 .setMIFlags(I.getFlags());
1128 MIB.constrainAllUses(TII, TRI, RBI);
1129 return true;
1130 }
1131 return selectExtInst(ResVReg, ResType, I, CL::fma, GL::Fma);
1132 }
1133
1134 case TargetOpcode::G_STRICT_FLDEXP:
1135 return selectExtInst(ResVReg, ResType, I, CL::ldexp);
1136
1137 case TargetOpcode::G_FPOW:
1138 return selectExtInst(ResVReg, ResType, I, CL::pow, GL::Pow);
1139 case TargetOpcode::G_FPOWI:
1140 return selectFpowi(ResVReg, ResType, I);
1141
1142 case TargetOpcode::G_FEXP:
1143 return selectExtInst(ResVReg, ResType, I, CL::exp, GL::Exp);
1144 case TargetOpcode::G_FEXP2:
1145 return selectExtInst(ResVReg, ResType, I, CL::exp2, GL::Exp2);
1146 case TargetOpcode::G_FEXP10:
1147 return selectExp10(ResVReg, ResType, I);
1148
1149 case TargetOpcode::G_FMODF:
1150 return selectModf(ResVReg, ResType, I);
1151 case TargetOpcode::G_FSINCOS:
1152 return selectSincos(ResVReg, ResType, I);
1153
1154 case TargetOpcode::G_FLOG:
1155 return selectExtInst(ResVReg, ResType, I, CL::log, GL::Log);
1156 case TargetOpcode::G_FLOG2:
1157 return selectExtInst(ResVReg, ResType, I, CL::log2, GL::Log2);
1158 case TargetOpcode::G_FLOG10:
1159 return selectLog10(ResVReg, ResType, I);
1160
1161 case TargetOpcode::G_FABS:
1162 return selectExtInst(ResVReg, ResType, I, CL::fabs, GL::FAbs);
1163 case TargetOpcode::G_ABS:
1164 return selectExtInst(ResVReg, ResType, I, CL::s_abs, GL::SAbs);
1165
1166 case TargetOpcode::G_FMINNUM:
1167 case TargetOpcode::G_FMINIMUM:
1168 return selectExtInst(ResVReg, ResType, I, CL::fmin, GL::NMin);
1169 case TargetOpcode::G_FMAXNUM:
1170 case TargetOpcode::G_FMAXIMUM:
1171 return selectExtInst(ResVReg, ResType, I, CL::fmax, GL::NMax);
1172
1173 case TargetOpcode::G_FCOPYSIGN:
1174 return selectExtInst(ResVReg, ResType, I, CL::copysign);
1175
1176 case TargetOpcode::G_FCEIL:
1177 return selectExtInst(ResVReg, ResType, I, CL::ceil, GL::Ceil);
1178 case TargetOpcode::G_FFLOOR:
1179 return selectExtInst(ResVReg, ResType, I, CL::floor, GL::Floor);
1180
1181 case TargetOpcode::G_FCOS:
1182 return selectExtInst(ResVReg, ResType, I, CL::cos, GL::Cos);
1183 case TargetOpcode::G_FSIN:
1184 return selectExtInst(ResVReg, ResType, I, CL::sin, GL::Sin);
1185 case TargetOpcode::G_FTAN:
1186 return selectExtInst(ResVReg, ResType, I, CL::tan, GL::Tan);
1187 case TargetOpcode::G_FACOS:
1188 return selectExtInst(ResVReg, ResType, I, CL::acos, GL::Acos);
1189 case TargetOpcode::G_FASIN:
1190 return selectExtInst(ResVReg, ResType, I, CL::asin, GL::Asin);
1191 case TargetOpcode::G_FATAN:
1192 return selectExtInst(ResVReg, ResType, I, CL::atan, GL::Atan);
1193 case TargetOpcode::G_FATAN2:
1194 return selectExtInst(ResVReg, ResType, I, CL::atan2, GL::Atan2);
1195 case TargetOpcode::G_FCOSH:
1196 return selectExtInst(ResVReg, ResType, I, CL::cosh, GL::Cosh);
1197 case TargetOpcode::G_FSINH:
1198 return selectExtInst(ResVReg, ResType, I, CL::sinh, GL::Sinh);
1199 case TargetOpcode::G_FTANH:
1200 return selectExtInst(ResVReg, ResType, I, CL::tanh, GL::Tanh);
1201
1202 case TargetOpcode::G_STRICT_FSQRT:
1203 case TargetOpcode::G_FSQRT:
1204 return selectExtInst(ResVReg, ResType, I, CL::sqrt, GL::Sqrt);
1205
1206 case TargetOpcode::G_CTTZ:
1207 case TargetOpcode::G_CTTZ_ZERO_POISON:
1208 return selectExtInst(ResVReg, ResType, I, CL::ctz);
1209 case TargetOpcode::G_CTLZ:
1210 case TargetOpcode::G_CTLZ_ZERO_POISON:
1211 return selectExtInst(ResVReg, ResType, I, CL::clz);
1212
1213 case TargetOpcode::G_INTRINSIC_ROUND:
1214 return selectExtInst(ResVReg, ResType, I, CL::round, GL::Round);
1215 case TargetOpcode::G_INTRINSIC_ROUNDEVEN:
1216 return selectExtInst(ResVReg, ResType, I, CL::rint, GL::RoundEven);
1217 case TargetOpcode::G_INTRINSIC_TRUNC:
1218 return selectExtInst(ResVReg, ResType, I, CL::trunc, GL::Trunc);
1219 case TargetOpcode::G_FRINT:
1220 case TargetOpcode::G_FNEARBYINT:
1221 return selectExtInst(ResVReg, ResType, I, CL::rint, GL::RoundEven);
1222
1223 case TargetOpcode::G_SMULH:
1224 return selectExtInst(ResVReg, ResType, I, CL::s_mul_hi);
1225 case TargetOpcode::G_UMULH:
1226 return selectExtInst(ResVReg, ResType, I, CL::u_mul_hi);
1227
1228 case TargetOpcode::G_SADDSAT:
1229 return selectExtInst(ResVReg, ResType, I, CL::s_add_sat);
1230 case TargetOpcode::G_UADDSAT:
1231 return selectExtInst(ResVReg, ResType, I, CL::u_add_sat);
1232 case TargetOpcode::G_SSUBSAT:
1233 return selectExtInst(ResVReg, ResType, I, CL::s_sub_sat);
1234 case TargetOpcode::G_USUBSAT:
1235 return selectExtInst(ResVReg, ResType, I, CL::u_sub_sat);
1236
1237 case TargetOpcode::G_FFREXP:
1238 return selectFrexp(ResVReg, ResType, I);
1239
1240 case TargetOpcode::G_UADDO:
1241 return selectOverflowArith(ResVReg, ResType, I,
1242 ResType->getOpcode() == SPIRV::OpTypeVector
1243 ? SPIRV::OpIAddCarryV
1244 : SPIRV::OpIAddCarryS);
1245 case TargetOpcode::G_USUBO:
1246 return selectOverflowArith(ResVReg, ResType, I,
1247 ResType->getOpcode() == SPIRV::OpTypeVector
1248 ? SPIRV::OpISubBorrowV
1249 : SPIRV::OpISubBorrowS);
1250 case TargetOpcode::G_UMULO:
1251 return selectOverflowArith(ResVReg, ResType, I, SPIRV::OpUMulExtended);
1252 case TargetOpcode::G_SMULO:
1253 return selectOverflowArith(ResVReg, ResType, I, SPIRV::OpSMulExtended);
1254
1255 case TargetOpcode::G_SEXT:
1256 return selectExt(ResVReg, ResType, I, true);
1257 case TargetOpcode::G_ANYEXT:
1258 case TargetOpcode::G_ZEXT:
1259 return selectExt(ResVReg, ResType, I, false);
1260 case TargetOpcode::G_TRUNC:
1261 return selectTrunc(ResVReg, ResType, I);
1262 case TargetOpcode::G_FPTRUNC:
1263 case TargetOpcode::G_FPEXT:
1264 return selectUnOp(ResVReg, ResType, I, SPIRV::OpFConvert);
1265
1266 case TargetOpcode::G_PTRTOINT:
1267 return selectUnOp(ResVReg, ResType, I, SPIRV::OpConvertPtrToU);
1268 case TargetOpcode::G_INTTOPTR:
1269 return selectUnOp(ResVReg, ResType, I, SPIRV::OpConvertUToPtr);
1270 case TargetOpcode::G_BITCAST:
1271 return selectBitcast(ResVReg, ResType, I);
1272 case TargetOpcode::G_ADDRSPACE_CAST:
1273 return selectAddrSpaceCast(ResVReg, ResType, I);
1274 case TargetOpcode::G_PTRMASK:
1275 return selectPtrMask(ResVReg, ResType, I);
1276 case TargetOpcode::G_PTR_ADD: {
1277 // Currently, we get G_PTR_ADD only applied to global variables.
1278 assert(I.getOperand(1).isReg() && I.getOperand(2).isReg());
1279 Register GV = I.getOperand(1).getReg();
1280 MachineRegisterInfo::def_instr_iterator II = MRI->def_instr_begin(GV);
1281 (void)II;
1282 assert(((*II).getOpcode() == TargetOpcode::G_GLOBAL_VALUE ||
1283 (*II).getOpcode() == TargetOpcode::COPY ||
1284 (*II).getOpcode() == SPIRV::OpVariable) &&
1285 getImm(I.getOperand(2), MRI));
1286 // It may be the initialization of a global variable.
1287 bool IsGVInit = false;
1288 for (MachineRegisterInfo::use_instr_iterator
1289 UseIt = MRI->use_instr_begin(I.getOperand(0).getReg()),
1290 UseEnd = MRI->use_instr_end();
1291 UseIt != UseEnd; UseIt = std::next(UseIt)) {
1292 if ((*UseIt).getOpcode() == TargetOpcode::G_GLOBAL_VALUE ||
1293 (*UseIt).getOpcode() == SPIRV::OpSpecConstantOp ||
1294 (*UseIt).getOpcode() == SPIRV::OpVariable) {
1295 IsGVInit = true;
1296 break;
1297 }
1298 }
1299 MachineBasicBlock &BB = *I.getParent();
1300 if (!IsGVInit) {
1301 SPIRVTypeInst GVType = GR.getSPIRVTypeForVReg(GV);
1302 SPIRVTypeInst GVPointeeType = GR.getPointeeType(GVType);
1303 SPIRVTypeInst ResPointeeType = GR.getPointeeType(ResType);
1304 if (GVPointeeType && ResPointeeType && GVPointeeType != ResPointeeType) {
1305 // Build a new virtual register that is associated with the required
1306 // data type.
1307 Register NewVReg = MRI->createGenericVirtualRegister(MRI->getType(GV));
1308 MRI->setRegClass(NewVReg, MRI->getRegClass(GV));
1309 // Having a correctly typed base we are ready to build the actually
1310 // required GEP. It may not be a constant though, because all Operands
1311 // of OpSpecConstantOp is to originate from other const instructions,
1312 // and only the AccessChain named opcodes accept a global OpVariable
1313 // instruction. We can't use an AccessChain opcode because of the type
1314 // mismatch between result and base types.
1315 if (!GR.isBitcastCompatible(ResType, GVType))
1316 return diagnoseUnsupported(
1317 I, "incompatible result and operand types in a bitcast");
1318 Register ResTypeReg = GR.getSPIRVTypeID(ResType);
1319 MachineInstrBuilder MIB =
1320 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpBitcast))
1321 .addDef(NewVReg)
1322 .addUse(ResTypeReg)
1323 .addUse(GV);
1324 MIB.constrainAllUses(TII, TRI, RBI);
1325 BuildMI(BB, I, I.getDebugLoc(),
1326 TII.get(STI.isLogicalSPIRV() ? SPIRV::OpInBoundsAccessChain
1327 : SPIRV::OpInBoundsPtrAccessChain))
1328 .addDef(ResVReg)
1329 .addUse(ResTypeReg)
1330 .addUse(NewVReg)
1331 .addUse(I.getOperand(2).getReg())
1332 .constrainAllUses(TII, TRI, RBI);
1333 } else {
1334 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSpecConstantOp))
1335 .addDef(ResVReg)
1336 .addUse(GR.getSPIRVTypeID(ResType))
1337 .addImm(
1338 static_cast<uint32_t>(SPIRV::Opcode::InBoundsPtrAccessChain))
1339 .addUse(GV)
1340 .addUse(I.getOperand(2).getReg())
1341 .constrainAllUses(TII, TRI, RBI);
1342 }
1343 return true;
1344 }
1345 // It's possible to translate G_PTR_ADD to OpSpecConstantOp: either to
1346 // initialize a global variable with a constant expression (e.g., the test
1347 // case opencl/basic/progvar_prog_scope_init.ll), or for another use case
1348 Register Idx = buildZerosVal(GR.getOrCreateSPIRVIntegerType(32, I, TII), I);
1349 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSpecConstantOp))
1350 .addDef(ResVReg)
1351 .addUse(GR.getSPIRVTypeID(ResType))
1352 .addImm(static_cast<uint32_t>(
1353 SPIRV::Opcode::InBoundsPtrAccessChain))
1354 .addUse(GV)
1355 .addUse(Idx)
1356 .addUse(I.getOperand(2).getReg());
1357 MIB.constrainAllUses(TII, TRI, RBI);
1358 return true;
1359 }
1360
1361 case TargetOpcode::G_ATOMICRMW_OR:
1362 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicOr);
1363 case TargetOpcode::G_ATOMICRMW_ADD:
1364 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicIAdd);
1365 case TargetOpcode::G_ATOMICRMW_AND:
1366 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicAnd);
1367 case TargetOpcode::G_ATOMICRMW_MAX:
1368 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicSMax);
1369 case TargetOpcode::G_ATOMICRMW_MIN:
1370 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicSMin);
1371 case TargetOpcode::G_ATOMICRMW_SUB:
1372 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicISub);
1373 case TargetOpcode::G_ATOMICRMW_XOR:
1374 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicXor);
1375 case TargetOpcode::G_ATOMICRMW_UMAX:
1376 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicUMax);
1377 case TargetOpcode::G_ATOMICRMW_UMIN:
1378 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicUMin);
1379 case TargetOpcode::G_ATOMICRMW_XCHG:
1380 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicExchange);
1381
1382 case TargetOpcode::G_ATOMICRMW_FADD:
1383 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicFAddEXT);
1384 case TargetOpcode::G_ATOMICRMW_FSUB:
1385 // Translate G_ATOMICRMW_FSUB to OpAtomicFAddEXT with negative value operand
1386 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicFAddEXT,
1387 ResType->getOpcode() == SPIRV::OpTypeVector
1388 ? SPIRV::OpFNegateV
1389 : SPIRV::OpFNegate);
1390 case TargetOpcode::G_ATOMICRMW_FMIN:
1391 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicFMinEXT);
1392 case TargetOpcode::G_ATOMICRMW_FMAX:
1393 return selectAtomicRMW(ResVReg, ResType, I, SPIRV::OpAtomicFMaxEXT);
1394
1395 case TargetOpcode::G_FENCE:
1396 return selectFence(I);
1397
1398 case TargetOpcode::G_STACKSAVE:
1399 return selectStackSave(ResVReg, ResType, I);
1400 case TargetOpcode::G_STACKRESTORE:
1401 return selectStackRestore(I);
1402
1403 case TargetOpcode::G_UNMERGE_VALUES:
1404 return selectUnmergeValues(I);
1405
1406 case TargetOpcode::G_TRAP:
1407 case TargetOpcode::G_UBSANTRAP:
1408 return selectTrap(I);
1409
1410 // Discard gen opcodes for intrinsics which we do not expect to actually
1411 // represent code after lowering or intrinsics which are not implemented but
1412 // should not crash when found in a customer's LLVM IR input.
1413 case TargetOpcode::DBG_LABEL:
1414 return true;
1415 case TargetOpcode::G_DEBUGTRAP:
1416 return selectDebugTrap(ResVReg, ResType, I);
1417
1418 default:
1419 return false;
1420 }
1421}
1422
1423bool SPIRVInstructionSelector::selectDebugTrap(Register ResVReg,
1424 SPIRVTypeInst ResType,
1425 MachineInstr &I) const {
1426 unsigned Opcode = SPIRV::OpNop;
1427 MachineBasicBlock &BB = *I.getParent();
1428 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
1429 .constrainAllUses(TII, TRI, RBI);
1430 return true;
1431}
1432
1433bool SPIRVInstructionSelector::selectExtInst(Register ResVReg,
1434 SPIRVTypeInst ResType,
1435 MachineInstr &I,
1436 GL::GLSLExtInst GLInst,
1437 bool setMIFlags, bool useMISrc,
1438 ArrayRef<Register> SrcRegs) const {
1439 if (!STI.canUseExtInstSet(
1440 SPIRV::InstructionSet::InstructionSet::GLSL_std_450))
1441 return diagnoseUnsupported(
1442 I,
1443 "this instruction is only supported with the GLSL extended instruction "
1444 "set.");
1445 return selectExtInst(ResVReg, ResType, I,
1446 {{SPIRV::InstructionSet::GLSL_std_450, GLInst}},
1447 setMIFlags, useMISrc, SrcRegs);
1448}
1449
1450bool SPIRVInstructionSelector::selectExtInst(Register ResVReg,
1451 SPIRVTypeInst ResType,
1452 MachineInstr &I,
1453 CL::OpenCLExtInst CLInst,
1454 bool setMIFlags, bool useMISrc,
1455 ArrayRef<Register> SrcRegs) const {
1456 return selectExtInst(ResVReg, ResType, I,
1457 {{SPIRV::InstructionSet::OpenCL_std, CLInst}},
1458 setMIFlags, useMISrc, SrcRegs);
1459}
1460
1461bool SPIRVInstructionSelector::selectExtInst(
1462 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
1463 CL::OpenCLExtInst CLInst, GL::GLSLExtInst GLInst, bool setMIFlags,
1464 bool useMISrc, ArrayRef<Register> SrcRegs) const {
1465 ExtInstList ExtInsts = {{SPIRV::InstructionSet::OpenCL_std, CLInst},
1466 {SPIRV::InstructionSet::GLSL_std_450, GLInst}};
1467 return selectExtInst(ResVReg, ResType, I, ExtInsts, setMIFlags, useMISrc,
1468 SrcRegs);
1469}
1470
1471bool SPIRVInstructionSelector::selectExtInst(Register ResVReg,
1472 SPIRVTypeInst ResType,
1473 MachineInstr &I,
1474 const ExtInstList &Insts,
1475 bool setMIFlags, bool useMISrc,
1476 ArrayRef<Register> SrcRegs) const {
1477
1478 for (const auto &[InstructionSet, Opcode] : Insts) {
1479 if (!STI.canUseExtInstSet(InstructionSet))
1480 continue;
1481 MachineBasicBlock &BB = *I.getParent();
1482 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
1483 .addDef(ResVReg)
1484 .addUse(GR.getSPIRVTypeID(ResType))
1485 .addImm(static_cast<uint32_t>(InstructionSet))
1486 .addImm(Opcode);
1487 if (setMIFlags)
1488 MIB.setMIFlags(I.getFlags());
1489 if (useMISrc) {
1490 const unsigned NumOps = I.getNumOperands();
1491 unsigned Index = 1;
1492 if (Index < NumOps &&
1493 I.getOperand(Index).getType() ==
1494 MachineOperand::MachineOperandType::MO_IntrinsicID)
1495 Index = 2;
1496 for (; Index < NumOps; ++Index)
1497 MIB.add(I.getOperand(Index));
1498 } else {
1499 for (Register SReg : SrcRegs) {
1500 MIB.addUse(SReg);
1501 }
1502 }
1503 MIB.constrainAllUses(TII, TRI, RBI);
1504 return true;
1505 }
1506 return false;
1507}
1508
1509bool SPIRVInstructionSelector::selectFrexp(Register ResVReg,
1510 SPIRVTypeInst ResType,
1511 MachineInstr &I) const {
1512 ExtInstList ExtInsts = {{SPIRV::InstructionSet::OpenCL_std, CL::frexp},
1513 {SPIRV::InstructionSet::GLSL_std_450, GL::Frexp}};
1514 for (const auto &Ex : ExtInsts) {
1515 SPIRV::InstructionSet::InstructionSet Set = Ex.first;
1516 uint32_t Opcode = Ex.second;
1517 if (!STI.canUseExtInstSet(Set))
1518 continue;
1519
1520 MachineIRBuilder MIRBuilder(I);
1521 SPIRVTypeInst PointeeTy = GR.getSPIRVTypeForVReg(I.getOperand(1).getReg());
1522 const SPIRVTypeInst PointerType = GR.getOrCreateSPIRVPointerType(
1523 PointeeTy, MIRBuilder, SPIRV::StorageClass::Function);
1524 Register PointerVReg =
1525 createVirtualRegister(PointerType, &GR, MRI, MRI->getMF());
1526
1527 auto It = getOpVariableMBBIt(*I.getMF());
1528 BuildMI(*It->getParent(), It, It->getDebugLoc(), TII.get(SPIRV::OpVariable))
1529 .addDef(PointerVReg)
1530 .addUse(GR.getSPIRVTypeID(PointerType))
1531 .addImm(static_cast<uint32_t>(SPIRV::StorageClass::Function))
1532 .constrainAllUses(TII, TRI, RBI);
1533
1534 SPIRVTypeInst MantissaTy = GR.getSPIRVTypeForVReg(I.getOperand(2).getReg());
1535 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
1536 .addDef(ResVReg)
1537 .addUse(GR.getSPIRVTypeID(MantissaTy))
1538 .addImm(static_cast<uint32_t>(Ex.first))
1539 .addImm(Opcode)
1540 .add(I.getOperand(2))
1541 .addUse(PointerVReg)
1542 .constrainAllUses(TII, TRI, RBI);
1543
1544 Register ExpResReg = I.getOperand(1).getReg();
1545 if (!MRI->use_nodbg_empty(ExpResReg))
1546 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
1547 .addDef(ExpResReg)
1548 .addUse(GR.getSPIRVTypeID(PointeeTy))
1549 .addUse(PointerVReg)
1550 .constrainAllUses(TII, TRI, RBI);
1551 return true;
1552 }
1553 return false;
1554}
1555
1556bool SPIRVInstructionSelector::selectSincos(Register ResVReg,
1557 SPIRVTypeInst ResType,
1558 MachineInstr &I) const {
1559 Register CosResVReg = I.getOperand(1).getReg();
1560 unsigned SrcIdx = I.getNumExplicitDefs();
1561 Register ResTypeReg = GR.getSPIRVTypeID(ResType);
1562
1563 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
1564 // OpenCL.std sincos(x, cosval*) -> returns sin(x), writes cos(x) to ptr.
1565 MachineIRBuilder MIRBuilder(I);
1566 const SPIRVTypeInst PointerType = GR.getOrCreateSPIRVPointerType(
1567 ResType, MIRBuilder, SPIRV::StorageClass::Function);
1568 Register PointerVReg =
1569 createVirtualRegister(PointerType, &GR, MRI, MRI->getMF());
1570
1571 auto It = getOpVariableMBBIt(*I.getMF());
1572 BuildMI(*It->getParent(), It, It->getDebugLoc(), TII.get(SPIRV::OpVariable))
1573 .addDef(PointerVReg)
1574 .addUse(GR.getSPIRVTypeID(PointerType))
1575 .addImm(static_cast<uint32_t>(SPIRV::StorageClass::Function))
1576 .constrainAllUses(TII, TRI, RBI);
1577 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
1578 .addDef(ResVReg)
1579 .addUse(ResTypeReg)
1580 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::OpenCL_std))
1581 .addImm(CL::sincos)
1582 .add(I.getOperand(SrcIdx))
1583 .addUse(PointerVReg)
1584 .constrainAllUses(TII, TRI, RBI);
1585 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
1586 .addDef(CosResVReg)
1587 .addUse(ResTypeReg)
1588 .addUse(PointerVReg)
1589 .constrainAllUses(TII, TRI, RBI);
1590 return true;
1591 } else if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
1592 // GLSL.std.450 has no combined sincos; emit separate Sin and Cos.
1593 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
1594 .addDef(ResVReg)
1595 .addUse(ResTypeReg)
1596 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
1597 .addImm(GL::Sin)
1598 .add(I.getOperand(SrcIdx))
1599 .constrainAllUses(TII, TRI, RBI);
1600 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
1601 .addDef(CosResVReg)
1602 .addUse(ResTypeReg)
1603 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
1604 .addImm(GL::Cos)
1605 .add(I.getOperand(SrcIdx))
1606 .constrainAllUses(TII, TRI, RBI);
1607 return true;
1608 }
1609 return false;
1610}
1611
1612bool SPIRVInstructionSelector::selectOpWithSrcs(Register ResVReg,
1613 SPIRVTypeInst ResType,
1614 MachineInstr &I,
1615 ArrayRef<Register> Srcs,
1616 unsigned Opcode) const {
1617 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
1618 .addDef(ResVReg)
1619 .addUse(GR.getSPIRVTypeID(ResType));
1620 for (Register SReg : Srcs) {
1621 MIB.addUse(SReg);
1622 }
1623 MIB.constrainAllUses(TII, TRI, RBI);
1624 return true;
1625}
1626
1627std::optional<SplitParts> SPIRVInstructionSelector::splitEvenOddLanes(
1628 Register PopCountReg, unsigned ComponentCount, MachineInstr &I,
1629 SPIRVTypeInst I32Type) const {
1630 SplitParts Parts;
1631
1632 if (ComponentCount == 1) {
1633 // ---- Scalar path: extract element 1 (high word) and element 0 (low word)
1634 // ----
1635 Parts.IsScalar = true;
1636 Parts.Type = I32Type;
1637 Parts.High = MRI->createVirtualRegister(GR.getRegClass(I32Type));
1638 Parts.Low = MRI->createVirtualRegister(GR.getRegClass(I32Type));
1639
1640 bool ZeroAsNull = !STI.isShader();
1641 Register IdxZero = GR.getOrCreateConstInt(0, I, I32Type, TII, ZeroAsNull);
1642 Register IdxOne = GR.getOrCreateConstInt(1, I, I32Type, TII, ZeroAsNull);
1643
1644 if (!selectOpWithSrcs(Parts.High, I32Type, I, {PopCountReg, IdxOne},
1645 SPIRV::OpVectorExtractDynamic))
1646 return std::nullopt;
1647
1648 if (!selectOpWithSrcs(Parts.Low, I32Type, I, {PopCountReg, IdxZero},
1649 SPIRV::OpVectorExtractDynamic))
1650 return std::nullopt;
1651
1652 } else {
1653 // ---- Vector path: shuffle odd lanes → High, even lanes → Low ----
1654 MachineIRBuilder MIRBuilder(I);
1655 Parts.IsScalar = false;
1656 Parts.Type = GR.getOrCreateSPIRVVectorType(I32Type, ComponentCount,
1657 MIRBuilder, /*IsSigned=*/false);
1658 Parts.High = MRI->createVirtualRegister(GR.getRegClass(Parts.Type));
1659 Parts.Low = MRI->createVirtualRegister(GR.getRegClass(Parts.Type));
1660
1661 // High = odd-indexed elements (1, 3, 5, …) — the upper 32-bit halves.
1662 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
1663 TII.get(SPIRV::OpVectorShuffle))
1664 .addDef(Parts.High)
1665 .addUse(GR.getSPIRVTypeID(Parts.Type))
1666 .addUse(PopCountReg)
1667 .addUse(PopCountReg);
1668 for (unsigned J = 1; J < ComponentCount * 2; J += 2)
1669 MIB.addImm(J);
1670 MIB.constrainAllUses(TII, TRI, RBI);
1671
1672 // Low = even-indexed elements (0, 2, 4, …) — the lower 32-bit halves.
1673 MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
1674 TII.get(SPIRV::OpVectorShuffle))
1675 .addDef(Parts.Low)
1676 .addUse(GR.getSPIRVTypeID(Parts.Type))
1677 .addUse(PopCountReg)
1678 .addUse(PopCountReg);
1679 for (unsigned J = 0; J < ComponentCount * 2; J += 2)
1680 MIB.addImm(J);
1681 MIB.constrainAllUses(TII, TRI, RBI);
1682 }
1683
1684 return Parts;
1685}
1686
1687bool SPIRVInstructionSelector::selectPopCount16(Register ResVReg,
1688 SPIRVTypeInst ResType,
1689 MachineInstr &I,
1690 unsigned ExtOpcode,
1691 unsigned Opcode) const {
1692 Register OpReg = I.getOperand(1).getReg();
1693 unsigned NumElems = GR.getScalarOrVectorComponentCount(OpReg);
1694
1695 MachineIRBuilder MIRBuilder(I);
1696 SPIRVTypeInst I32Type = GR.getOrCreateSPIRVIntegerType(32, MIRBuilder);
1697 SPIRVTypeInst I32VectorType =
1698 GR.getOrCreateSPIRVVectorType(I32Type, NumElems, MIRBuilder, false);
1699
1700 bool IsVector = NumElems > 1;
1701 SPIRVTypeInst ExtType = IsVector ? I32VectorType : I32Type;
1702 Register ExtReg = MRI->createVirtualRegister(GR.getRegClass(ExtType));
1703 // Always use OpUConvert to always use a 0 extend
1704 if (!selectOpWithSrcs(ExtReg, ExtType, I, {OpReg}, SPIRV::OpUConvert))
1705 return false;
1706
1707 Register PopCountReg = MRI->createVirtualRegister(GR.getRegClass(ExtType));
1708 if (!selectPopCount32(PopCountReg, ExtType, I, ExtReg, Opcode))
1709 return false;
1710
1711 return selectOpWithSrcs(ResVReg, ResType, I, {PopCountReg}, ExtOpcode);
1712}
1713
1714bool SPIRVInstructionSelector::selectPopCount32(Register ResVReg,
1715 SPIRVTypeInst ResType,
1716 MachineInstr &I,
1717 Register SrcReg,
1718 unsigned Opcode) const {
1719 return selectOpWithSrcs(ResVReg, ResType, I, {SrcReg}, Opcode);
1720}
1721
1722bool SPIRVInstructionSelector::selectPopCount64(Register ResVReg,
1723 SPIRVTypeInst ResType,
1724 MachineInstr &I,
1725 Register SrcReg,
1726 unsigned Opcode) const {
1727 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
1728 if (ComponentCount > 2)
1729 return handle64BitOverflow(
1730 ResVReg, ResType, I, SrcReg, Opcode,
1731 [this](Register R, SPIRVTypeInst T, MachineInstr &I, Register S,
1732 unsigned O) { return this->selectPopCount64(R, T, I, S, O); });
1733
1734 MachineIRBuilder MIRBuilder(I);
1735
1736 // ---- Types ----
1737 SPIRVTypeInst I32Type = GR.getOrCreateSPIRVIntegerType(32, MIRBuilder);
1738 SPIRVTypeInst VecI32Type = GR.getOrCreateSPIRVVectorType(
1739 I32Type, 2 * ComponentCount, MIRBuilder, /*IsSigned=*/false);
1740
1741 // Converts 64 bit into and array of 32 bit, containing 2 elements.
1742 Register Vec32 = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
1743 if (!selectOpWithSrcs(Vec32, VecI32Type, I, {SrcReg}, SPIRV::OpBitcast))
1744 return false;
1745
1746 // Apply popcount on each 32 bit lane
1747 Register Pop32 = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
1748 if (!selectPopCount32(Pop32, VecI32Type, I, Vec32, Opcode))
1749 return false;
1750
1751 // Splits result into highbit lane and lowbit lane
1752 auto MaybeParts = splitEvenOddLanes(Pop32, ComponentCount, I, I32Type);
1753 if (!MaybeParts)
1754 return false;
1755 SplitParts &Parts = *MaybeParts;
1756
1757 // Sum high part and low part
1758 unsigned OpAdd = Parts.IsScalar ? SPIRV::OpIAddS : SPIRV::OpIAddV;
1759 Register Sum = MRI->createVirtualRegister(GR.getRegClass(Parts.Type));
1760 if (!selectOpWithSrcs(Sum, Parts.Type, I, {Parts.High, Parts.Low}, OpAdd))
1761 return false;
1762
1763 // Convert 32 bit sum into 64 bit scalar
1764 bool IsSigned = GR.isScalarOrVectorSigned(ResType);
1765 unsigned ConvOp = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
1766 return selectOpWithSrcs(ResVReg, ResType, I, {Sum}, ConvOp);
1767}
1768
1769bool SPIRVInstructionSelector::selectPopCount(Register ResVReg,
1770 SPIRVTypeInst ResType,
1771 MachineInstr &I,
1772 unsigned Opcode) const {
1773 // Vulkan restricts OpBitCount to 32-bit integers or vectors of 32-bit
1774 // integers unless VK_KHR_maintenance9 is enabled. Until VK_KHR_maintenance9
1775 // is core we will not generate OpBitCount with any other types when
1776 // targeting Vulkan.
1777 if (!STI.getTargetTriple().isVulkanOS())
1778 return selectUnOp(ResVReg, ResType, I, Opcode);
1779
1780 Register OpReg = I.getOperand(1).getReg();
1781 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
1782 unsigned ExtOpcode = GR.isScalarOrVectorSigned(ResType) ? SPIRV::OpSConvert
1783 : SPIRV::OpUConvert;
1784 switch (GR.getScalarOrVectorBitWidth(OpType)) {
1785 case 8:
1786 case 16:
1787 return selectPopCount16(ResVReg, ResType, I, ExtOpcode, Opcode);
1788 case 32:
1789 return selectPopCount32(ResVReg, ResType, I, OpReg, Opcode);
1790 case 64:
1791 return selectPopCount64(ResVReg, ResType, I, OpReg, Opcode);
1792 default:
1793 return diagnoseUnsupported(I, "unsupported operand bit width for popcount");
1794 }
1795}
1796
1797bool SPIRVInstructionSelector::selectUnOp(Register ResVReg,
1798 SPIRVTypeInst ResType,
1799 MachineInstr &I,
1800 unsigned Opcode) const {
1801 if (STI.isPhysicalSPIRV() && I.getOperand(1).isReg()) {
1802 Register SrcReg = I.getOperand(1).getReg();
1803 bool IsGV = false;
1804 for (MachineRegisterInfo::def_instr_iterator DefIt =
1805 MRI->def_instr_begin(SrcReg);
1806 DefIt != MRI->def_instr_end(); DefIt = std::next(DefIt)) {
1807 unsigned DefOpCode = DefIt->getOpcode();
1808 if (DefOpCode == SPIRV::ASSIGN_TYPE || DefOpCode == TargetOpcode::COPY) {
1809 // We need special handling to look through the type assignment or the
1810 // COPY pseudo-op and see if this is a constant or a global.
1811 if (auto *VRD = getVRegDef(*MRI, DefIt->getOperand(1).getReg()))
1812 DefOpCode = VRD->getOpcode();
1813 }
1814 if (DefOpCode == TargetOpcode::G_GLOBAL_VALUE ||
1815 DefOpCode == TargetOpcode::G_CONSTANT ||
1816 DefOpCode == SPIRV::OpVariable || DefOpCode == SPIRV::OpConstantI) {
1817 IsGV = true;
1818 break;
1819 }
1820 }
1821 if (IsGV) {
1822 uint32_t SpecOpcode = 0;
1823 switch (Opcode) {
1824 case SPIRV::OpConvertPtrToU:
1825 SpecOpcode = static_cast<uint32_t>(SPIRV::Opcode::ConvertPtrToU);
1826 break;
1827 case SPIRV::OpConvertUToPtr:
1828 SpecOpcode = static_cast<uint32_t>(SPIRV::Opcode::ConvertUToPtr);
1829 break;
1830 }
1831 if (SpecOpcode) {
1832 BuildMI(*I.getParent(), I, I.getDebugLoc(),
1833 TII.get(SPIRV::OpSpecConstantOp))
1834 .addDef(ResVReg)
1835 .addUse(GR.getSPIRVTypeID(ResType))
1836 .addImm(SpecOpcode)
1837 .addUse(SrcReg)
1838 .constrainAllUses(TII, TRI, RBI);
1839 return true;
1840 }
1841 }
1842 }
1843 return selectOpWithSrcs(ResVReg, ResType, I, {I.getOperand(1).getReg()},
1844 Opcode);
1845}
1846
1847bool SPIRVInstructionSelector::selectBitcast(Register ResVReg,
1848 SPIRVTypeInst ResType,
1849 MachineInstr &I) const {
1850 Register OpReg = I.getOperand(1).getReg();
1851 SPIRVTypeInst OpType =
1852 OpReg.isValid() ? GR.getSPIRVTypeForVReg(OpReg) : nullptr;
1853 if (!GR.isBitcastCompatible(ResType, OpType))
1854 return diagnoseUnsupported(
1855 I, "incompatible result and operand types in a bitcast");
1856 return selectUnOp(ResVReg, ResType, I, SPIRV::OpBitcast);
1857}
1858
1859static void addMemoryOperands(MachineMemOperand *MemOp,
1860 MachineInstrBuilder &MIB,
1861 MachineIRBuilder &MIRBuilder,
1862 SPIRVGlobalRegistry &GR) {
1863 const SPIRVSubtarget *ST =
1864 static_cast<const SPIRVSubtarget *>(&MIRBuilder.getMF().getSubtarget());
1865 uint32_t SpvMemOp = static_cast<uint32_t>(SPIRV::MemoryOperand::None);
1866 if (MemOp->isVolatile())
1867 SpvMemOp |= static_cast<uint32_t>(SPIRV::MemoryOperand::Volatile);
1868 if (MemOp->isNonTemporal())
1869 SpvMemOp |= static_cast<uint32_t>(SPIRV::MemoryOperand::Nontemporal);
1870 // Aligned memory operand requires the Kernel capability.
1871 if (!ST->isShader() && MemOp->getAlign().value())
1872 SpvMemOp |= static_cast<uint32_t>(SPIRV::MemoryOperand::Aligned);
1873
1874 [[maybe_unused]] MachineInstr *AliasList = nullptr;
1875 [[maybe_unused]] MachineInstr *NoAliasList = nullptr;
1876 if (ST->canUseExtension(SPIRV::Extension::SPV_INTEL_memory_access_aliasing)) {
1877 if (auto *MD = MemOp->getAAInfo().Scope) {
1878 AliasList = GR.getOrAddMemAliasingINTELInst(MIRBuilder, MD);
1879 if (AliasList)
1880 SpvMemOp |=
1881 static_cast<uint32_t>(SPIRV::MemoryOperand::AliasScopeINTELMask);
1882 }
1883 if (auto *MD = MemOp->getAAInfo().NoAlias) {
1884 NoAliasList = GR.getOrAddMemAliasingINTELInst(MIRBuilder, MD);
1885 if (NoAliasList)
1886 SpvMemOp |=
1887 static_cast<uint32_t>(SPIRV::MemoryOperand::NoAliasINTELMask);
1888 }
1889 }
1890
1891 if (SpvMemOp != static_cast<uint32_t>(SPIRV::MemoryOperand::None)) {
1892 MIB.addImm(SpvMemOp);
1893 if (SpvMemOp & static_cast<uint32_t>(SPIRV::MemoryOperand::Aligned))
1894 MIB.addImm(MemOp->getAlign().value());
1895 if (AliasList)
1896 MIB.addUse(AliasList->getOperand(0).getReg());
1897 if (NoAliasList)
1898 MIB.addUse(NoAliasList->getOperand(0).getReg());
1899 }
1900}
1901
1902static void addMemoryOperands(uint64_t Flags, MachineInstrBuilder &MIB) {
1903 uint32_t SpvMemOp = static_cast<uint32_t>(SPIRV::MemoryOperand::None);
1904 if (Flags & MachineMemOperand::Flags::MOVolatile)
1905 SpvMemOp |= static_cast<uint32_t>(SPIRV::MemoryOperand::Volatile);
1906 if (Flags & MachineMemOperand::Flags::MONonTemporal)
1907 SpvMemOp |= static_cast<uint32_t>(SPIRV::MemoryOperand::Nontemporal);
1908
1909 if (SpvMemOp != static_cast<uint32_t>(SPIRV::MemoryOperand::None))
1910 MIB.addImm(SpvMemOp);
1911}
1912
1913bool SPIRVInstructionSelector::selectLoad(Register ResVReg,
1914 SPIRVTypeInst ResType,
1915 MachineInstr &I) const {
1916 unsigned OpOffset = isa<GIntrinsic>(I) ? 1 : 0;
1917 Register Ptr = I.getOperand(1 + OpOffset).getReg();
1918
1919 auto *PtrDef = getVRegDef(*MRI, Ptr);
1920 auto *IntPtrDef = dyn_cast<GIntrinsic>(PtrDef);
1921 if (IntPtrDef &&
1922 (IntPtrDef->getIntrinsicID() == Intrinsic::spv_resource_getbasepointer ||
1923 IntPtrDef->getIntrinsicID() == Intrinsic::spv_resource_getpointer)) {
1924
1925 Register HandleReg = IntPtrDef->getOperand(2).getReg();
1926 SPIRVTypeInst HandleType = GR.getSPIRVTypeForVReg(HandleReg);
1927 if (HandleType->getOpcode() == SPIRV::OpTypeImage) {
1928 Register NewHandleReg =
1929 MRI->createVirtualRegister(MRI->getRegClass(HandleReg));
1930 auto *HandleDef = cast<GIntrinsic>(getVRegDef(*MRI, HandleReg));
1931 if (!loadHandleBeforePosition(NewHandleReg, HandleType, *HandleDef, I)) {
1932 return false;
1933 }
1934
1935 Register IdxReg = IntPtrDef->getOperand(3).getReg();
1936 return generateImageReadOrFetch(ResVReg, ResType, NewHandleReg, IdxReg,
1937 I.getDebugLoc(), I);
1938 }
1939 }
1940
1941 MachineIRBuilder MIRBuilder(I);
1942
1943 if (I.getNumMemOperands()) {
1944 const MachineMemOperand *MemOp = *I.memoperands_begin();
1945 if (MemOp->isAtomic())
1946 return selectAtomicLoad(ResVReg, ResType, I);
1947 }
1948
1949 auto MIB = MIRBuilder.buildInstr(SPIRV::OpLoad)
1950 .addDef(ResVReg)
1951 .addUse(GR.getSPIRVTypeID(ResType))
1952 .addUse(Ptr);
1953 if (!I.getNumMemOperands()) {
1954 assert(I.getOpcode() == TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS ||
1955 I.getOpcode() ==
1956 TargetOpcode::G_INTRINSIC_CONVERGENT_W_SIDE_EFFECTS);
1957 addMemoryOperands(I.getOperand(2 + OpOffset).getImm(), MIB);
1958 } else {
1959 addMemoryOperands(*I.memoperands_begin(), MIB, MIRBuilder, GR);
1960 }
1961 MIB.constrainAllUses(TII, TRI, RBI);
1962 return true;
1963}
1964
1965bool SPIRVInstructionSelector::selectAtomicLoad(Register ResVReg,
1966 SPIRVTypeInst ResType,
1967 MachineInstr &I) const {
1968 LLVMContext &Context = I.getMF()->getFunction().getContext();
1969
1970 unsigned OpOffset = isa<GIntrinsic>(I) ? 1 : 0;
1971 Register Ptr = I.getOperand(1 + OpOffset).getReg();
1972
1973 if (!ResType.isTypeIntOrFloat() && !ResType.isTypePtr())
1974 return diagnoseUnsupported(
1975 I, "Lowering to SPIR-V of atomic load is only "
1976 "allowed for integer, floating point or pointer types");
1977
1978 assert(I.getNumMemOperands());
1979 const MachineMemOperand &MemOp = **I.memoperands_begin();
1980 assert(MemOp.isAtomic());
1981
1982 uint32_t Scope =
1983 static_cast<uint32_t>(getMemScope(Context, MemOp.getSyncScopeID()));
1984 Register ScopeReg = buildI32Constant(Scope, I);
1985
1986 AtomicOrdering AO = MemOp.getSuccessOrdering();
1987 uint32_t StorageClass = static_cast<uint32_t>(getMemSemanticsForStorageClass(
1988 addressSpaceToStorageClass(MemOp.getAddrSpace(), STI)));
1989 uint32_t MemSem = static_cast<uint32_t>(getMemSemantics(AO));
1990 if (MemOp.isVolatile() && STI.getTargetTriple().isVulkanOS())
1991 MemSem |= static_cast<uint32_t>(SPIRV::MemorySemantics::Volatile);
1992 Register MemSemReg = buildI32Constant(MemSem | StorageClass, I);
1993
1994 MachineIRBuilder MIRBuilder(I);
1995
1996 if (ResType.isTypePtr()) {
1997 if (!STI.isPhysicalSPIRV())
1998 return diagnoseUnsupported(
1999 I, "Lowering to SPIR-V of atomic load is only "
2000 "allowed for pointer types for physical addressing model");
2001 // If data to load is a pointer type we bitcast the Ptr parameter to pointer
2002 // to an integer type of the same size as the pointer size and then generate
2003 // OpAtomicLoad the return value of that OpAtomicLoad is an integet that is
2004 // converted back to a pointer type using OpConvertUToPtr.
2005
2006 unsigned PtrSize = GR.getPointerSize();
2007 SPIRVTypeInst PtrAsIntSpirvType =
2008 GR.getOrCreateSPIRVIntegerType(PtrSize, MIRBuilder);
2009 Register PtrToUVal =
2010 MRI->createGenericVirtualRegister(LLT::scalar(PtrSize));
2011 MRI->setRegClass(PtrToUVal, GR.getRegClass(PtrAsIntSpirvType));
2012 GR.assignSPIRVTypeToVReg(PtrAsIntSpirvType, PtrToUVal, MIRBuilder.getMF());
2013
2014 Register PtrCastedToMatchValReg =
2015 MRI->createGenericVirtualRegister(LLT::scalar(PtrSize));
2016 MRI->setRegClass(PtrCastedToMatchValReg, MRI->getRegClassOrNull(Ptr));
2017 SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
2018 PtrAsIntSpirvType, MIRBuilder,
2019 addressSpaceToStorageClass(MemOp.getAddrSpace(), STI));
2020 GR.assignSPIRVTypeToVReg(PtrType, PtrCastedToMatchValReg,
2021 MIRBuilder.getMF());
2022
2023 MIRBuilder.buildInstr(SPIRV::OpBitcast)
2024 .addDef(PtrCastedToMatchValReg)
2025 .addUse(GR.getSPIRVTypeID(PtrType))
2026 .addUse(Ptr)
2027 .constrainAllUses(TII, TRI, RBI);
2028
2029 MIRBuilder.buildInstr(SPIRV::OpAtomicLoad)
2030 .addDef(PtrToUVal)
2031 .addUse(GR.getSPIRVTypeID(PtrAsIntSpirvType))
2032 .addUse(PtrCastedToMatchValReg)
2033 .addUse(ScopeReg)
2034 .addUse(MemSemReg)
2035 .constrainAllUses(TII, TRI, RBI);
2036 MIRBuilder.buildInstr(SPIRV::OpConvertUToPtr)
2037 .addDef(ResVReg)
2038 .addUse(GR.getSPIRVTypeID(ResType))
2039 .addUse(PtrToUVal)
2040 .constrainAllUses(TII, TRI, RBI);
2041 return true;
2042 }
2043 auto AtomicLoad = MIRBuilder.buildInstr(SPIRV::OpAtomicLoad)
2044 .addDef(ResVReg)
2045 .addUse(GR.getSPIRVTypeID(ResType))
2046 .addUse(Ptr)
2047 .addUse(ScopeReg)
2048 .addUse(MemSemReg);
2049 AtomicLoad.constrainAllUses(TII, TRI, RBI);
2050
2051 return true;
2052}
2053
2054bool SPIRVInstructionSelector::selectStore(MachineInstr &I) const {
2055 unsigned OpOffset = isa<GIntrinsic>(I) ? 1 : 0;
2056 Register StoreVal = I.getOperand(0 + OpOffset).getReg();
2057 Register Ptr = I.getOperand(1 + OpOffset).getReg();
2058
2059 auto *PtrDef = getVRegDef(*MRI, Ptr);
2060 auto *IntPtrDef = dyn_cast<GIntrinsic>(PtrDef);
2061 if (IntPtrDef &&
2062 (IntPtrDef->getIntrinsicID() == Intrinsic::spv_resource_getbasepointer ||
2063 IntPtrDef->getIntrinsicID() == Intrinsic::spv_resource_getpointer)) {
2064
2065 Register HandleReg = IntPtrDef->getOperand(2).getReg();
2066 Register NewHandleReg =
2067 MRI->createVirtualRegister(MRI->getRegClass(HandleReg));
2068 auto *HandleDef = cast<GIntrinsic>(getVRegDef(*MRI, HandleReg));
2069 SPIRVTypeInst HandleType = GR.getSPIRVTypeForVReg(HandleReg);
2070 if (!loadHandleBeforePosition(NewHandleReg, HandleType, *HandleDef, I)) {
2071 return false;
2072 }
2073
2074 Register IdxReg = IntPtrDef->getOperand(3).getReg();
2075 if (HandleType->getOpcode() == SPIRV::OpTypeImage) {
2076 auto BMI = BuildMI(*I.getParent(), I, I.getDebugLoc(),
2077 TII.get(SPIRV::OpImageWrite))
2078 .addUse(NewHandleReg)
2079 .addUse(IdxReg)
2080 .addUse(StoreVal);
2081
2082 const llvm::Type *LLVMHandleType = GR.getTypeForSPIRVType(HandleType);
2083 if (sampledTypeIsSignedInteger(LLVMHandleType))
2084 BMI.addImm(0x1000); // SignExtend
2085
2086 BMI.constrainAllUses(TII, TRI, RBI);
2087 return true;
2088 }
2089 }
2090
2091 if (I.getNumMemOperands()) {
2092 const MachineMemOperand *MemOp = *I.memoperands_begin();
2093 if (MemOp->isAtomic())
2094 return selectAtomicStore(I);
2095 }
2096
2097 MachineIRBuilder MIRBuilder(I);
2098 auto MIB = MIRBuilder.buildInstr(SPIRV::OpStore).addUse(Ptr).addUse(StoreVal);
2099 if (!I.getNumMemOperands()) {
2100 assert(I.getOpcode() == TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS ||
2101 I.getOpcode() ==
2102 TargetOpcode::G_INTRINSIC_CONVERGENT_W_SIDE_EFFECTS);
2103 addMemoryOperands(I.getOperand(2 + OpOffset).getImm(), MIB);
2104 } else {
2105 addMemoryOperands(*I.memoperands_begin(), MIB, MIRBuilder, GR);
2106 }
2107 MIB.constrainAllUses(TII, TRI, RBI);
2108 return true;
2109}
2110
2111bool SPIRVInstructionSelector::selectAtomicStore(MachineInstr &I) const {
2112 LLVMContext &Context = I.getMF()->getFunction().getContext();
2113
2114 unsigned OpOffset = isa<GIntrinsic>(I) ? 1 : 0;
2115 Register StoreVal = I.getOperand(0 + OpOffset).getReg();
2116 Register Ptr = I.getOperand(1 + OpOffset).getReg();
2117
2118 SPIRVTypeInst PtrType = GR.getSPIRVTypeForVReg(Ptr);
2119 SPIRVTypeInst PointeeType = GR.getPointeeType(PtrType);
2120
2121 assert(I.getNumMemOperands());
2122 const MachineMemOperand &MemOp = **I.memoperands_begin();
2123 assert(MemOp.isAtomic());
2124
2125 uint32_t Scope =
2126 static_cast<uint32_t>(getMemScope(Context, MemOp.getSyncScopeID()));
2127 Register ScopeReg = buildI32Constant(Scope, I);
2128
2129 AtomicOrdering AO = MemOp.getSuccessOrdering();
2130 uint32_t StorageClass = static_cast<uint32_t>(getMemSemanticsForStorageClass(
2131 addressSpaceToStorageClass(MemOp.getAddrSpace(), STI)));
2132 uint32_t MemSem = static_cast<uint32_t>(getMemSemantics(AO));
2133 if (MemOp.isVolatile() && STI.getTargetTriple().isVulkanOS())
2134 MemSem |= static_cast<uint32_t>(SPIRV::MemorySemantics::Volatile);
2135 Register MemSemReg = buildI32Constant(MemSem | StorageClass, I);
2136 MachineIRBuilder MIRBuilder(I);
2137
2138 if (PointeeType.isTypePtr()) {
2139 if (!STI.isPhysicalSPIRV())
2140 return diagnoseUnsupported(
2141 I, "Lowering to SPIR-V of atomic store is only "
2142 "allowed for pointer types for physical addressing model");
2143 // If data to store is a pointer type we cast it to an integer type of the
2144 // same size as the pointer size using OpConvertPtrToU, bitcast Ptr
2145 // parameter to pointer to integer type and then generate OpAtomicStore
2146 // with casted values as required by spec.
2147 unsigned PtrSize = GR.getPointerSize();
2148 SPIRVTypeInst PtrAsIntSpirvType =
2149 GR.getOrCreateSPIRVIntegerType(PtrSize, MIRBuilder);
2150
2151 Register PtrToUVal =
2152 MRI->createGenericVirtualRegister(LLT::scalar(PtrSize));
2153 MRI->setRegClass(PtrToUVal, GR.getRegClass(PtrAsIntSpirvType));
2154 GR.assignSPIRVTypeToVReg(PtrAsIntSpirvType, PtrToUVal, MIRBuilder.getMF());
2155 MIRBuilder.buildInstr(SPIRV::OpConvertPtrToU)
2156 .addDef(PtrToUVal)
2157 .addUse(GR.getSPIRVTypeID(PtrAsIntSpirvType)) // Result type
2158 .addUse(StoreVal) // Pointer operand
2159 .constrainAllUses(TII, TRI, RBI);
2160
2161 Register PtrCastedToMatchValReg =
2162 MRI->createGenericVirtualRegister(LLT::scalar(PtrSize));
2163 MRI->setRegClass(PtrCastedToMatchValReg, MRI->getRegClassOrNull(Ptr));
2164 SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
2165 PtrAsIntSpirvType, MIRBuilder,
2166 addressSpaceToStorageClass(MemOp.getAddrSpace(), STI));
2167 GR.assignSPIRVTypeToVReg(PtrType, PtrCastedToMatchValReg,
2168 MIRBuilder.getMF());
2169
2170 MIRBuilder.buildInstr(SPIRV::OpBitcast)
2171 .addDef(PtrCastedToMatchValReg)
2172 .addUse(GR.getSPIRVTypeID(PtrType))
2173 .addUse(Ptr)
2174 .constrainAllUses(TII, TRI, RBI);
2175
2176 StoreVal = PtrToUVal;
2177 Ptr = PtrCastedToMatchValReg;
2178 PointeeType = PtrAsIntSpirvType;
2179 }
2180
2181 if (!PointeeType.isTypeIntOrFloat())
2182 return diagnoseUnsupported(I,
2183 "Lowering to SPIR-V of atomic store is only "
2184 "allowed for integer or floating point types");
2185
2186 auto AtomicStore = MIRBuilder.buildInstr(SPIRV::OpAtomicStore)
2187 .addUse(Ptr)
2188 .addUse(ScopeReg)
2189 .addUse(MemSemReg)
2190 .addUse(StoreVal);
2191 AtomicStore.constrainAllUses(TII, TRI, RBI);
2192
2193 return true;
2194}
2195
2196bool SPIRVInstructionSelector::selectMaskedGather(Register ResVReg,
2197 SPIRVTypeInst ResType,
2198 MachineInstr &I) const {
2199 assert(I.getNumExplicitDefs() == 1 && "Expected single def for gather");
2200 // Operand indices:
2201 // 0: result (def)
2202 // 1: intrinsic ID
2203 // 2: vector of pointers
2204 // 3: alignment (i32 immediate)
2205 // 4: mask (vector of i1)
2206 // 5: passthru/fill value
2207 const Register PtrsReg = I.getOperand(2).getReg();
2208 const uint32_t Alignment = I.getOperand(3).getImm();
2209 const Register MaskReg = I.getOperand(4).getReg();
2210 const Register PassthruReg = I.getOperand(5).getReg();
2211 const Register AlignmentReg = buildI32Constant(Alignment, I);
2212
2213 MachineBasicBlock &BB = *I.getParent();
2214 auto MIB =
2215 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpMaskedGatherINTEL))
2216 .addDef(ResVReg)
2217 .addUse(GR.getSPIRVTypeID(ResType))
2218 .addUse(PtrsReg)
2219 .addUse(AlignmentReg)
2220 .addUse(MaskReg)
2221 .addUse(PassthruReg);
2222 MIB.constrainAllUses(TII, TRI, RBI);
2223 return true;
2224}
2225
2226bool SPIRVInstructionSelector::selectMaskedScatter(MachineInstr &I) const {
2227 assert(I.getNumExplicitDefs() == 0 && "Expected no defs for scatter");
2228 // Operand indices (no explicit defs):
2229 // 0: intrinsic ID
2230 // 1: value vector
2231 // 2: vector of pointers
2232 // 3: alignment (i32 immediate)
2233 // 4: mask (vector of i1)
2234 const Register ValuesReg = I.getOperand(1).getReg();
2235 const Register PtrsReg = I.getOperand(2).getReg();
2236 const uint32_t Alignment = I.getOperand(3).getImm();
2237 const Register MaskReg = I.getOperand(4).getReg();
2238 const Register AlignmentReg = buildI32Constant(Alignment, I);
2239 MachineBasicBlock &BB = *I.getParent();
2240
2241 auto MIB =
2242 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpMaskedScatterINTEL))
2243 .addUse(PtrsReg)
2244 .addUse(AlignmentReg)
2245 .addUse(MaskReg)
2246 .addUse(ValuesReg);
2247 MIB.constrainAllUses(TII, TRI, RBI);
2248 return true;
2249}
2250
2251bool SPIRVInstructionSelector::diagnoseUnsupported(const MachineInstr &I,
2252 const Twine &Msg) const {
2253 const Function &F = I.getMF()->getFunction();
2254 F.getContext().diagnose(
2255 DiagnosticInfoUnsupported(F, Msg, I.getDebugLoc(), DS_Error));
2256 return false;
2257}
2258
2259bool SPIRVInstructionSelector::selectStackSave(Register ResVReg,
2260 SPIRVTypeInst ResType,
2261 MachineInstr &I) const {
2262 if (!STI.canUseExtension(SPIRV::Extension::SPV_INTEL_variable_length_array))
2263 return diagnoseUnsupported(
2264 I, "llvm.stacksave intrinsic: this instruction requires the following "
2265 "SPIR-V extension: SPV_INTEL_variable_length_array");
2266 MachineBasicBlock &BB = *I.getParent();
2267 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSaveMemoryINTEL))
2268 .addDef(ResVReg)
2269 .addUse(GR.getSPIRVTypeID(ResType))
2270 .constrainAllUses(TII, TRI, RBI);
2271 return true;
2272}
2273
2274bool SPIRVInstructionSelector::selectStackRestore(MachineInstr &I) const {
2275 if (!STI.canUseExtension(SPIRV::Extension::SPV_INTEL_variable_length_array))
2276 return diagnoseUnsupported(
2277 I,
2278 "llvm.stackrestore intrinsic: this instruction requires the following "
2279 "SPIR-V extension: SPV_INTEL_variable_length_array");
2280 if (!I.getOperand(0).isReg())
2281 return false;
2282 MachineBasicBlock &BB = *I.getParent();
2283 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpRestoreMemoryINTEL))
2284 .addUse(I.getOperand(0).getReg())
2285 .constrainAllUses(TII, TRI, RBI);
2286 return true;
2287}
2288
2289Register
2290SPIRVInstructionSelector::getOrCreateMemSetGlobal(MachineInstr &I) const {
2291 MachineIRBuilder MIRBuilder(I);
2292 assert(I.getOperand(1).isReg() && I.getOperand(2).isReg());
2293
2294 // TODO: check if we have such GV, add init, use buildGlobalVariable.
2295 unsigned Num = getIConstVal(I.getOperand(2).getReg(), MRI);
2296 Function &CurFunction = GR.CurMF->getFunction();
2297 Type *LLVMArrTy =
2298 ArrayType::get(IntegerType::get(CurFunction.getContext(), 8), Num);
2299 GlobalVariable *GV = new GlobalVariable(*CurFunction.getParent(), LLVMArrTy,
2300 true, GlobalValue::InternalLinkage,
2301 Constant::getNullValue(LLVMArrTy));
2302
2303 Type *ValTy = Type::getInt8Ty(I.getMF()->getFunction().getContext());
2304 Type *ArrTy = ArrayType::get(ValTy, Num);
2305 SPIRVTypeInst VarTy = GR.getOrCreateSPIRVPointerType(
2306 ArrTy, MIRBuilder, SPIRV::StorageClass::UniformConstant);
2307
2308 SPIRVTypeInst SpvArrTy = GR.getOrCreateSPIRVType(
2309 ArrTy, MIRBuilder, SPIRV::AccessQualifier::None, false);
2310
2311 unsigned Val = getIConstVal(I.getOperand(1).getReg(), MRI);
2312 Register Const = GR.getOrCreateConstIntArray(Val, Num, I, SpvArrTy, TII);
2313
2314 Register VarReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
2315 auto MIBVar =
2316 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpVariable))
2317 .addDef(VarReg)
2318 .addUse(GR.getSPIRVTypeID(VarTy))
2319 .addImm(SPIRV::StorageClass::UniformConstant)
2320 .addUse(Const);
2321 MIBVar.constrainAllUses(TII, TRI, RBI);
2322
2323 GR.add(GV, MIBVar);
2324 GR.addGlobalObject(GV, GR.CurMF, VarReg);
2325
2326 buildOpDecorate(VarReg, I, TII, SPIRV::Decoration::Constant, {});
2327 return VarReg;
2328}
2329
2330bool SPIRVInstructionSelector::selectCopyMemory(MachineInstr &I,
2331 Register SrcReg) const {
2332 MachineBasicBlock &BB = *I.getParent();
2333 Register DstReg = I.getOperand(0).getReg();
2334 SPIRVTypeInst DstTy = GR.getSPIRVTypeForVReg(DstReg);
2335 SPIRVTypeInst SrcTy = GR.getSPIRVTypeForVReg(SrcReg);
2336 if (GR.getPointeeType(DstTy) != GR.getPointeeType(SrcTy))
2337 return diagnoseUnsupported(
2338 I, "OpCopyMemory requires operands to have the same type");
2339 uint64_t CopySize = getIConstVal(I.getOperand(2).getReg(), MRI);
2340 SPIRVTypeInst PointeeTy = GR.getPointeeType(DstTy);
2341 const Type *LLVMPointeeTy = GR.getTypeForSPIRVType(PointeeTy);
2342 if (!LLVMPointeeTy)
2343 return diagnoseUnsupported(
2344 I, "Unable to determine pointee type size for OpCopyMemory");
2345 const DataLayout &DL = I.getMF()->getFunction().getDataLayout();
2346 if (CopySize != DL.getTypeStoreSize(const_cast<Type *>(LLVMPointeeTy)))
2347 return diagnoseUnsupported(
2348 I, "OpCopyMemory requires the size to match the pointee type size");
2349 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCopyMemory))
2350 .addUse(DstReg)
2351 .addUse(SrcReg);
2352 if (I.getNumMemOperands()) {
2353 MachineIRBuilder MIRBuilder(I);
2354 addMemoryOperands(*I.memoperands_begin(), MIB, MIRBuilder, GR);
2355 }
2356 MIB.constrainAllUses(TII, TRI, RBI);
2357 return true;
2358}
2359
2360bool SPIRVInstructionSelector::selectCopyMemorySized(MachineInstr &I,
2361 Register SrcReg) const {
2362 MachineBasicBlock &BB = *I.getParent();
2363 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCopyMemorySized))
2364 .addUse(I.getOperand(0).getReg())
2365 .addUse(SrcReg)
2366 .addUse(I.getOperand(2).getReg());
2367 if (I.getNumMemOperands()) {
2368 MachineIRBuilder MIRBuilder(I);
2369 addMemoryOperands(*I.memoperands_begin(), MIB, MIRBuilder, GR);
2370 }
2371 MIB.constrainAllUses(TII, TRI, RBI);
2372 return true;
2373}
2374
2375bool SPIRVInstructionSelector::selectMemOperation(Register ResVReg,
2376 MachineInstr &I) const {
2377 // Zero-sized memcpy/memmove/memset are no-ops.
2378 Register SizeReg = I.getOperand(2).getReg();
2379 if (MachineInstr *SizeDef = getDefInstrMaybeConstant(SizeReg, MRI);
2380 SizeDef && SizeDef->getOpcode() == TargetOpcode::G_CONSTANT &&
2381 getIConstVal(SizeReg, MRI) == 0)
2382 return true;
2383
2384 Register SrcReg = I.getOperand(1).getReg();
2385 if (I.getOpcode() == TargetOpcode::G_MEMSET ||
2386 I.getOpcode() == TargetOpcode::G_MEMSET_INLINE) {
2387 Register VarReg = getOrCreateMemSetGlobal(I);
2388 if (!VarReg.isValid())
2389 return false;
2390 Type *ValTy = Type::getInt8Ty(I.getMF()->getFunction().getContext());
2391 SPIRVTypeInst SourceTy = GR.getOrCreateSPIRVPointerType(
2392 ValTy, I, SPIRV::StorageClass::UniformConstant);
2393 SrcReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
2394 if (!selectOpWithSrcs(SrcReg, SourceTy, I, {VarReg}, SPIRV::OpBitcast))
2395 return false;
2396 }
2397 if (STI.isLogicalSPIRV()) {
2398 if (!selectCopyMemory(I, SrcReg))
2399 return false;
2400 } else {
2401 if (!selectCopyMemorySized(I, SrcReg))
2402 return false;
2403 }
2404 if (ResVReg.isValid() && ResVReg != I.getOperand(0).getReg())
2405 if (!BuildCOPY(ResVReg, I.getOperand(0).getReg(), I))
2406 return false;
2407 return true;
2408}
2409
2410bool SPIRVInstructionSelector::selectAtomicRMW(Register ResVReg,
2411 SPIRVTypeInst ResType,
2412 MachineInstr &I,
2413 unsigned NewOpcode,
2414 unsigned NegateOpcode) const {
2415 assert(I.hasOneMemOperand());
2416 const MachineMemOperand *MemOp = *I.memoperands_begin();
2417 uint32_t Scope = static_cast<uint32_t>(getMemScope(
2418 GR.CurMF->getFunction().getContext(), MemOp->getSyncScopeID()));
2419 Register ScopeReg = buildI32Constant(Scope, I);
2420
2421 Register Ptr = I.getOperand(1).getReg();
2422 uint32_t ScSem = static_cast<uint32_t>(
2423 getMemSemanticsForStorageClass(GR.getPointerStorageClass(Ptr)));
2424 AtomicOrdering AO = MemOp->getSuccessOrdering();
2425 uint32_t MemSem = static_cast<uint32_t>(getMemSemantics(AO)) | ScSem;
2426 Register MemSemReg = buildI32Constant(MemSem, I);
2427
2428 Register ValueReg = I.getOperand(2).getReg();
2429 if (NegateOpcode != 0) {
2430 // Translation with negative value operand is requested
2431 Register TmpReg = createVirtualRegister(ResType, &GR, MRI, MRI->getMF());
2432 if (!selectOpWithSrcs(TmpReg, ResType, I, {ValueReg}, NegateOpcode))
2433 return false;
2434 ValueReg = TmpReg;
2435 }
2436
2437 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(NewOpcode))
2438 .addDef(ResVReg)
2439 .addUse(GR.getSPIRVTypeID(ResType))
2440 .addUse(Ptr)
2441 .addUse(ScopeReg)
2442 .addUse(MemSemReg)
2443 .addUse(ValueReg)
2444 .constrainAllUses(TII, TRI, RBI);
2445 return true;
2446}
2447
2448bool SPIRVInstructionSelector::selectInterlockedAdd(Register ResVReg,
2449 SPIRVTypeInst ResType,
2450 MachineInstr &I) const {
2451 Register Ptr = I.getOperand(2).getReg();
2452 Register Value = I.getOperand(3).getReg();
2453
2454 SPIRV::StorageClass::StorageClass SC = GR.getPointerStorageClass(Ptr);
2455 assert((SC == SPIRV::StorageClass::Workgroup ||
2456 SC == SPIRV::StorageClass::StorageBuffer) &&
2457 "InterlockedAdd requires Workgroup or StorageBuffer storage class");
2458 uint32_t Scope = static_cast<uint32_t>(SC == SPIRV::StorageClass::Workgroup
2459 ? SPIRV::Scope::Workgroup
2460 : SPIRV::Scope::Device);
2461 Register ScopeReg = buildI32Constant(Scope, I);
2462
2463 uint32_t MemSem = static_cast<uint32_t>(getMemSemanticsForStorageClass(SC));
2464 Register MemSemReg = buildI32Constant(MemSem, I);
2465
2466 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAtomicIAdd))
2467 .addDef(ResVReg)
2468 .addUse(GR.getSPIRVTypeID(ResType))
2469 .addUse(Ptr)
2470 .addUse(ScopeReg)
2471 .addUse(MemSemReg)
2472 .addUse(Value)
2473 .constrainAllUses(TII, TRI, RBI);
2474 return true;
2475}
2476
2477bool SPIRVInstructionSelector::selectUnmergeValues(MachineInstr &I) const {
2478 unsigned ArgI = I.getNumOperands() - 1;
2479 Register SrcReg =
2480 I.getOperand(ArgI).isReg() ? I.getOperand(ArgI).getReg() : Register(0);
2481 SPIRVTypeInst SrcType =
2482 SrcReg.isValid() ? GR.getSPIRVTypeForVReg(SrcReg) : nullptr;
2483 if (!SrcType || SrcType->getOpcode() != SPIRV::OpTypeVector)
2484 report_fatal_error(
2485 "cannot select G_UNMERGE_VALUES with a non-vector argument");
2486
2487 SPIRVTypeInst ScalarType = GR.getScalarOrVectorComponentType(SrcType);
2488 MachineBasicBlock &BB = *I.getParent();
2489 unsigned CurrentIndex = 0;
2490 for (unsigned i = 0; i < I.getNumDefs(); ++i) {
2491 Register ResVReg = I.getOperand(i).getReg();
2492 SPIRVTypeInst ResType = GR.getSPIRVTypeForVReg(ResVReg);
2493 if (!ResType) {
2494 LLT ResLLT = MRI->getType(ResVReg);
2495 assert(ResLLT.isValid());
2496 if (ResLLT.isVector()) {
2497 ResType = GR.getOrCreateSPIRVVectorType(
2498 ScalarType, ResLLT.getNumElements(), I, TII);
2499 } else {
2500 ResType = ScalarType;
2501 }
2502 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
2503 GR.assignSPIRVTypeToVReg(ResType, ResVReg, *GR.CurMF);
2504 }
2505
2506 if (ResType->getOpcode() == SPIRV::OpTypeVector) {
2507 Register UndefReg = GR.getOrCreateUndef(I, SrcType, TII);
2508 auto MIB =
2509 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorShuffle))
2510 .addDef(ResVReg)
2511 .addUse(GR.getSPIRVTypeID(ResType))
2512 .addUse(SrcReg)
2513 .addUse(UndefReg);
2514 unsigned NumElements = GR.getScalarOrVectorComponentCount(ResType);
2515 for (unsigned j = 0; j < NumElements; ++j) {
2516 MIB.addImm(CurrentIndex + j);
2517 }
2518 CurrentIndex += NumElements;
2519 MIB.constrainAllUses(TII, TRI, RBI);
2520 } else {
2521 auto MIB =
2522 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
2523 .addDef(ResVReg)
2524 .addUse(GR.getSPIRVTypeID(ResType))
2525 .addUse(SrcReg)
2526 .addImm(CurrentIndex);
2527 CurrentIndex++;
2528 MIB.constrainAllUses(TII, TRI, RBI);
2529 }
2530 }
2531 return true;
2532}
2533
2534bool SPIRVInstructionSelector::selectFence(MachineInstr &I) const {
2535 AtomicOrdering AO = AtomicOrdering(I.getOperand(0).getImm());
2536 uint32_t MemSem = static_cast<uint32_t>(getMemSemantics(AO));
2537 Register MemSemReg = buildI32Constant(MemSem, I);
2538 SyncScope::ID Ord = SyncScope::ID(I.getOperand(1).getImm());
2539 uint32_t Scope = static_cast<uint32_t>(
2540 getMemScope(GR.CurMF->getFunction().getContext(), Ord));
2541 Register ScopeReg = buildI32Constant(Scope, I);
2542 MachineBasicBlock &BB = *I.getParent();
2543 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpMemoryBarrier))
2544 .addUse(ScopeReg)
2545 .addUse(MemSemReg)
2546 .constrainAllUses(TII, TRI, RBI);
2547 return true;
2548}
2549
2550bool SPIRVInstructionSelector::selectOverflowArith(Register ResVReg,
2551 SPIRVTypeInst ResType,
2552 MachineInstr &I,
2553 unsigned Opcode) const {
2554 Type *ResTy = nullptr;
2555 StringRef ResName;
2556 if (!GR.findValueAttrs(&I, ResTy, ResName))
2557 return diagnoseUnsupported(
2558 I,
2559 "Not enough info to select the arithmetic with overflow instruction");
2560 if (!ResTy || !ResTy->isStructTy())
2561 return diagnoseUnsupported(I,
2562 "Expect struct type result for the arithmetic "
2563 "with overflow instruction");
2564 // "Result Type must be from OpTypeStruct. The struct must have two members,
2565 // and the two members must be the same type."
2566 Type *ResElemTy = cast<StructType>(ResTy)->getElementType(0);
2567 ResTy = StructType::get(ResElemTy, ResElemTy);
2568 // Build SPIR-V types and constant(s) if needed.
2569 MachineIRBuilder MIRBuilder(I);
2570 SPIRVTypeInst StructType = GR.getOrCreateSPIRVType(
2571 ResTy, MIRBuilder, SPIRV::AccessQualifier::ReadWrite, false);
2572 assert(I.getNumDefs() > 1 && "Not enought operands");
2573 SPIRVTypeInst BoolType = GR.getOrCreateSPIRVBoolType(I, TII);
2574 unsigned N = GR.getScalarOrVectorComponentCount(ResType);
2575 if (N > 1)
2576 BoolType = GR.getOrCreateSPIRVVectorType(BoolType, N, I, TII);
2577 Register BoolTypeReg = GR.getSPIRVTypeID(BoolType);
2578 Register ZeroReg = buildZerosVal(ResType, I);
2579 // A new virtual register to store the result struct.
2580 Register StructVReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
2581 MRI->setRegClass(StructVReg, &SPIRV::IDRegClass);
2582 // Build the result name if needed.
2583 if (ResName.size() > 0)
2584 buildOpName(StructVReg, ResName, MIRBuilder);
2585 // Build the arithmetic with overflow instruction.
2586 MachineBasicBlock &BB = *I.getParent();
2587 auto MIB =
2588 BuildMI(BB, MIRBuilder.getInsertPt(), I.getDebugLoc(), TII.get(Opcode))
2589 .addDef(StructVReg)
2590 .addUse(GR.getSPIRVTypeID(StructType));
2591 for (unsigned i = I.getNumDefs(); i < I.getNumOperands(); ++i)
2592 MIB.addUse(I.getOperand(i).getReg());
2593 MIB.constrainAllUses(TII, TRI, RBI);
2594 // Build instructions to extract fields of the instruction's result.
2595 // A new virtual register to store the higher part of the result struct.
2596 Register HigherVReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
2597 MRI->setRegClass(HigherVReg, &SPIRV::iIDRegClass);
2598 for (unsigned i = 0; i < I.getNumDefs(); ++i) {
2599 auto MIB =
2600 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
2601 .addDef(i == 1 ? HigherVReg : I.getOperand(i).getReg())
2602 .addUse(GR.getSPIRVTypeID(ResType))
2603 .addUse(StructVReg)
2604 .addImm(i);
2605 MIB.constrainAllUses(TII, TRI, RBI);
2606 }
2607 // Build boolean value from the higher part.
2608 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpINotEqual))
2609 .addDef(I.getOperand(1).getReg())
2610 .addUse(BoolTypeReg)
2611 .addUse(HigherVReg)
2612 .addUse(ZeroReg)
2613 .constrainAllUses(TII, TRI, RBI);
2614 return true;
2615}
2616
2617bool SPIRVInstructionSelector::selectAtomicCmpXchg(Register ResVReg,
2618 SPIRVTypeInst ResType,
2619 MachineInstr &I) const {
2620 assert(isa<GIntrinsic>(I) &&
2621 "selectAtomicCmpXchg only handles the spv_cmpxchg intrinsic");
2622 Register Ptr = I.getOperand(2).getReg();
2623 Register ScopeReg = I.getOperand(5).getReg();
2624 Register MemSemEqReg = I.getOperand(6).getReg();
2625 Register MemSemNeqReg = I.getOperand(7).getReg();
2626 Register Cmp = I.getOperand(3).getReg();
2627 Register Val = I.getOperand(4).getReg();
2628 SPIRVTypeInst SpvValTy = GR.getSPIRVTypeForVReg(Val);
2629 Register ACmpRes = createVirtualRegister(SpvValTy, &GR, MRI, *I.getMF());
2630 const DebugLoc &DL = I.getDebugLoc();
2631 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpAtomicCompareExchange))
2632 .addDef(ACmpRes)
2633 .addUse(GR.getSPIRVTypeID(SpvValTy))
2634 .addUse(Ptr)
2635 .addUse(ScopeReg)
2636 .addUse(MemSemEqReg)
2637 .addUse(MemSemNeqReg)
2638 .addUse(Val)
2639 .addUse(Cmp)
2640 .constrainAllUses(TII, TRI, RBI);
2641 SPIRVTypeInst BoolTy = GR.getOrCreateSPIRVBoolType(I, TII);
2642 Register CmpSuccReg = createVirtualRegister(BoolTy, &GR, MRI, *I.getMF());
2643 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpIEqual))
2644 .addDef(CmpSuccReg)
2645 .addUse(GR.getSPIRVTypeID(BoolTy))
2646 .addUse(ACmpRes)
2647 .addUse(Cmp)
2648 .constrainAllUses(TII, TRI, RBI);
2649 Register TmpReg = createVirtualRegister(ResType, &GR, MRI, *I.getMF());
2650 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpCompositeInsert))
2651 .addDef(TmpReg)
2652 .addUse(GR.getSPIRVTypeID(ResType))
2653 .addUse(ACmpRes)
2654 .addUse(GR.getOrCreateUndef(I, ResType, TII))
2655 .addImm(0)
2656 .constrainAllUses(TII, TRI, RBI);
2657 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpCompositeInsert))
2658 .addDef(ResVReg)
2659 .addUse(GR.getSPIRVTypeID(ResType))
2660 .addUse(CmpSuccReg)
2661 .addUse(TmpReg)
2662 .addImm(1)
2663 .constrainAllUses(TII, TRI, RBI);
2664 return true;
2665}
2666
2667static bool isUSMStorageClass(SPIRV::StorageClass::StorageClass SC) {
2668 switch (SC) {
2669 case SPIRV::StorageClass::DeviceOnlyINTEL:
2670 case SPIRV::StorageClass::HostOnlyINTEL:
2671 return true;
2672 default:
2673 return false;
2674 }
2675}
2676
2677// Returns true ResVReg is referred only from global vars and OpName's.
2678static bool isASCastInGVar(MachineRegisterInfo *MRI, Register ResVReg) {
2679 bool IsGRef = false;
2680 bool IsAllowedRefs =
2681 llvm::all_of(MRI->use_instructions(ResVReg), [&IsGRef](auto const &It) {
2682 unsigned Opcode = It.getOpcode();
2683 if (Opcode == SPIRV::OpConstantComposite ||
2684 Opcode == SPIRV::OpSpecConstantComposite ||
2685 Opcode == SPIRV::OpVariable ||
2686 isSpvIntrinsic(It, Intrinsic::spv_init_global))
2687 return IsGRef = true;
2688 return Opcode == SPIRV::OpName;
2689 });
2690 return IsAllowedRefs && IsGRef;
2691}
2692
2693Register SPIRVInstructionSelector::getUcharPtrTypeReg(
2694 MachineInstr &I, SPIRV::StorageClass::StorageClass SC) const {
2695 return GR.getSPIRVTypeID(GR.getOrCreateSPIRVPointerType(
2696 Type::getInt8Ty(I.getMF()->getFunction().getContext()), I, SC));
2697}
2698
2699MachineInstrBuilder
2700SPIRVInstructionSelector::buildSpecConstantOp(MachineInstr &I, Register Dest,
2701 Register Src, Register DestType,
2702 uint32_t Opcode) const {
2703 return BuildMI(*I.getParent(), I, I.getDebugLoc(),
2704 TII.get(SPIRV::OpSpecConstantOp))
2705 .addDef(Dest)
2706 .addUse(DestType)
2707 .addImm(Opcode)
2708 .addUse(Src);
2709}
2710
2711MachineInstrBuilder
2712SPIRVInstructionSelector::buildConstGenericPtr(MachineInstr &I, Register SrcPtr,
2713 SPIRVTypeInst SrcPtrTy) const {
2714 SPIRVTypeInst GenericPtrTy =
2715 GR.changePointerStorageClass(SrcPtrTy, SPIRV::StorageClass::Generic, I);
2716 Register Tmp = MRI->createVirtualRegister(&SPIRV::pIDRegClass);
2717 MRI->setType(Tmp, LLT::pointer(storageClassToAddressSpace(
2718 SPIRV::StorageClass::Generic),
2719 GR.getPointerSize()));
2720 MachineFunction *MF = I.getParent()->getParent();
2721 GR.assignSPIRVTypeToVReg(GenericPtrTy, Tmp, *MF);
2722 MachineInstrBuilder MIB = buildSpecConstantOp(
2723 I, Tmp, SrcPtr, GR.getSPIRVTypeID(GenericPtrTy),
2724 static_cast<uint32_t>(SPIRV::Opcode::PtrCastToGeneric));
2725 GR.add(MIB.getInstr(), MIB);
2726 return MIB;
2727}
2728
2729// In SPIR-V address space casting can only happen to and from the Generic
2730// storage class. We can also only cast Workgroup, CrossWorkgroup, or Function
2731// pointers to and from Generic pointers. As such, we can convert e.g. from
2732// Workgroup to Function by going via a Generic pointer as an intermediary. All
2733// other combinations can only be done by a bitcast, and are probably not safe.
2734bool SPIRVInstructionSelector::selectAddrSpaceCast(Register ResVReg,
2735 SPIRVTypeInst ResType,
2736 MachineInstr &I) const {
2737 MachineBasicBlock &BB = *I.getParent();
2738 const DebugLoc &DL = I.getDebugLoc();
2739
2740 Register SrcPtr = I.getOperand(1).getReg();
2741 SPIRVTypeInst SrcPtrTy = GR.getSPIRVTypeForVReg(SrcPtr);
2742
2743 // don't generate a cast for a null that may be represented by OpTypeInt
2744 if (SrcPtrTy->getOpcode() != SPIRV::OpTypePointer ||
2745 ResType->getOpcode() != SPIRV::OpTypePointer)
2746 return BuildCOPY(ResVReg, SrcPtr, I);
2747
2748 SPIRV::StorageClass::StorageClass SrcSC = GR.getPointerStorageClass(SrcPtrTy);
2749 SPIRV::StorageClass::StorageClass DstSC = GR.getPointerStorageClass(ResType);
2750
2751 if (isASCastInGVar(MRI, ResVReg)) {
2752 // AddrSpaceCast uses within OpVariable and OpConstantComposite instructions
2753 // are expressed by OpSpecConstantOp with an Opcode.
2754 // TODO: maybe insert a check whether the Kernel capability was declared and
2755 // so PtrCastToGeneric/GenericCastToPtr are available.
2756 unsigned SpecOpcode =
2757 DstSC == SPIRV::StorageClass::Generic && isGenericCastablePtr(SrcSC)
2758 ? static_cast<uint32_t>(SPIRV::Opcode::PtrCastToGeneric)
2759 : (SrcSC == SPIRV::StorageClass::Generic &&
2760 isGenericCastablePtr(DstSC)
2761 ? static_cast<uint32_t>(SPIRV::Opcode::GenericCastToPtr)
2762 : 0);
2763 // TODO: OpConstantComposite expects i8*, so we are forced to forget a
2764 // correct value of ResType and use general i8* instead. Maybe this should
2765 // be addressed in the emit-intrinsic step to infer a correct
2766 // OpConstantComposite type.
2767 if (SpecOpcode) {
2768 buildSpecConstantOp(I, ResVReg, SrcPtr, getUcharPtrTypeReg(I, DstSC),
2769 SpecOpcode)
2770 .constrainAllUses(TII, TRI, RBI);
2771 } else if (isGenericCastablePtr(SrcSC) && isGenericCastablePtr(DstSC)) {
2772 MachineInstrBuilder MIB = buildConstGenericPtr(I, SrcPtr, SrcPtrTy);
2773 MIB.constrainAllUses(TII, TRI, RBI);
2774 buildSpecConstantOp(
2775 I, ResVReg, MIB->getOperand(0).getReg(), getUcharPtrTypeReg(I, DstSC),
2776 static_cast<uint32_t>(SPIRV::Opcode::GenericCastToPtr))
2777 .constrainAllUses(TII, TRI, RBI);
2778 }
2779 return true;
2780 }
2781
2782 // don't generate a cast between identical storage classes
2783 if (SrcSC == DstSC)
2784 return BuildCOPY(ResVReg, SrcPtr, I);
2785
2786 if ((SrcSC == SPIRV::StorageClass::Function &&
2787 DstSC == SPIRV::StorageClass::Private) ||
2788 (DstSC == SPIRV::StorageClass::Function &&
2789 SrcSC == SPIRV::StorageClass::Private))
2790 return BuildCOPY(ResVReg, SrcPtr, I);
2791
2792 // Casting from an eligible pointer to Generic.
2793 if (DstSC == SPIRV::StorageClass::Generic && isGenericCastablePtr(SrcSC))
2794 return selectUnOp(ResVReg, ResType, I, SPIRV::OpPtrCastToGeneric);
2795 // Casting from Generic to an eligible pointer.
2796 if (SrcSC == SPIRV::StorageClass::Generic && isGenericCastablePtr(DstSC))
2797 return selectUnOp(ResVReg, ResType, I, SPIRV::OpGenericCastToPtr);
2798 // Casting between 2 eligible pointers using Generic as an intermediary.
2799 if (isGenericCastablePtr(SrcSC) && isGenericCastablePtr(DstSC)) {
2800 SPIRVTypeInst GenericPtrTy =
2801 GR.changePointerStorageClass(SrcPtrTy, SPIRV::StorageClass::Generic, I);
2802 Register Tmp = createVirtualRegister(GenericPtrTy, &GR, MRI, MRI->getMF());
2803 BuildMI(BB, I, DL, TII.get(SPIRV::OpPtrCastToGeneric))
2804 .addDef(Tmp)
2805 .addUse(GR.getSPIRVTypeID(GenericPtrTy))
2806 .addUse(SrcPtr)
2807 .constrainAllUses(TII, TRI, RBI);
2808 BuildMI(BB, I, DL, TII.get(SPIRV::OpGenericCastToPtr))
2809 .addDef(ResVReg)
2810 .addUse(GR.getSPIRVTypeID(ResType))
2811 .addUse(Tmp)
2812 .constrainAllUses(TII, TRI, RBI);
2813 return true;
2814 }
2815
2816 // Check if instructions from the SPV_INTEL_usm_storage_classes extension may
2817 // be applied
2818 if (isUSMStorageClass(SrcSC) && DstSC == SPIRV::StorageClass::CrossWorkgroup)
2819 return selectUnOp(ResVReg, ResType, I,
2820 SPIRV::OpPtrCastToCrossWorkgroupINTEL);
2821 if (SrcSC == SPIRV::StorageClass::CrossWorkgroup && isUSMStorageClass(DstSC))
2822 return selectUnOp(ResVReg, ResType, I,
2823 SPIRV::OpCrossWorkgroupCastToPtrINTEL);
2824 if (isUSMStorageClass(SrcSC) && DstSC == SPIRV::StorageClass::Generic)
2825 return selectUnOp(ResVReg, ResType, I, SPIRV::OpPtrCastToGeneric);
2826 if (SrcSC == SPIRV::StorageClass::Generic && isUSMStorageClass(DstSC))
2827 return selectUnOp(ResVReg, ResType, I, SPIRV::OpGenericCastToPtr);
2828
2829 // Bitcast for pointers requires that the address spaces must match
2830 return false;
2831}
2832
2833// G_PTRMASK - Apply a bitmask to a pointer value.
2834// Result = Ptr & Mask
2835// We need to convert the pointer to an integer, perform the AND operation,
2836// and convert back to a pointer.
2837bool SPIRVInstructionSelector::selectPtrMask(Register ResVReg,
2838 SPIRVTypeInst ResType,
2839 MachineInstr &I) const {
2840 if (STI.isLogicalSPIRV())
2841 return diagnoseUnsupported(
2842 I, "G_PTRMASK is not supported with logical SPIR-V");
2843 MachineBasicBlock &BB = *I.getParent();
2844 MachineFunction &MF = *BB.getParent();
2845 const DebugLoc &DL = I.getDebugLoc();
2846
2847 Register PtrReg = I.getOperand(1).getReg();
2848 Register MaskReg = I.getOperand(2).getReg();
2849
2850 SPIRVTypeInst MaskType = GR.getSPIRVTypeForVReg(MaskReg);
2851
2852 // Convert pointer to integer.
2853 Register PtrAsInt = MRI->createVirtualRegister(GR.getRegClass(MaskType));
2854 GR.assignSPIRVTypeToVReg(MaskType, PtrAsInt, MF);
2855
2856 BuildMI(BB, I, DL, TII.get(SPIRV::OpConvertPtrToU))
2857 .addDef(PtrAsInt)
2858 .addUse(GR.getSPIRVTypeID(MaskType))
2859 .addUse(PtrReg)
2860 .constrainAllUses(TII, TRI, RBI);
2861
2862 // Perform bitwise AND.
2863 Register MaskedInt = MRI->createVirtualRegister(GR.getRegClass(MaskType));
2864 GR.assignSPIRVTypeToVReg(MaskType, MaskedInt, MF);
2865
2866 unsigned AndOpcode = GR.getScalarOrVectorComponentCount(MaskType) > 1
2867 ? SPIRV::OpBitwiseAndV
2868 : SPIRV::OpBitwiseAndS;
2869
2870 BuildMI(BB, I, DL, TII.get(AndOpcode))
2871 .addDef(MaskedInt)
2872 .addUse(GR.getSPIRVTypeID(MaskType))
2873 .addUse(PtrAsInt)
2874 .addUse(MaskReg)
2875 .constrainAllUses(TII, TRI, RBI);
2876
2877 // Convert integer back to pointer.
2878 BuildMI(BB, I, DL, TII.get(SPIRV::OpConvertUToPtr))
2879 .addDef(ResVReg)
2880 .addUse(GR.getSPIRVTypeID(ResType))
2881 .addUse(MaskedInt)
2882 .constrainAllUses(TII, TRI, RBI);
2883
2884 return true;
2885}
2886
2887static unsigned getFCmpOpcode(unsigned PredNum) {
2888 auto Pred = static_cast<CmpInst::Predicate>(PredNum);
2889 switch (Pred) {
2890 case CmpInst::FCMP_OEQ:
2891 return SPIRV::OpFOrdEqual;
2892 case CmpInst::FCMP_OGE:
2893 return SPIRV::OpFOrdGreaterThanEqual;
2894 case CmpInst::FCMP_OGT:
2895 return SPIRV::OpFOrdGreaterThan;
2896 case CmpInst::FCMP_OLE:
2897 return SPIRV::OpFOrdLessThanEqual;
2898 case CmpInst::FCMP_OLT:
2899 return SPIRV::OpFOrdLessThan;
2900 case CmpInst::FCMP_ONE:
2901 return SPIRV::OpFOrdNotEqual;
2902 case CmpInst::FCMP_ORD:
2903 return SPIRV::OpOrdered;
2904 case CmpInst::FCMP_UEQ:
2905 return SPIRV::OpFUnordEqual;
2906 case CmpInst::FCMP_UGE:
2907 return SPIRV::OpFUnordGreaterThanEqual;
2908 case CmpInst::FCMP_UGT:
2909 return SPIRV::OpFUnordGreaterThan;
2910 case CmpInst::FCMP_ULE:
2911 return SPIRV::OpFUnordLessThanEqual;
2912 case CmpInst::FCMP_ULT:
2913 return SPIRV::OpFUnordLessThan;
2914 case CmpInst::FCMP_UNE:
2915 return SPIRV::OpFUnordNotEqual;
2916 case CmpInst::FCMP_UNO:
2917 return SPIRV::OpUnordered;
2918 default:
2919 llvm_unreachable("Unknown predicate type for FCmp");
2920 }
2921}
2922
2923static unsigned getICmpOpcode(unsigned PredNum) {
2924 auto Pred = static_cast<CmpInst::Predicate>(PredNum);
2925 switch (Pred) {
2926 case CmpInst::ICMP_EQ:
2927 return SPIRV::OpIEqual;
2928 case CmpInst::ICMP_NE:
2929 return SPIRV::OpINotEqual;
2930 case CmpInst::ICMP_SGE:
2931 return SPIRV::OpSGreaterThanEqual;
2932 case CmpInst::ICMP_SGT:
2933 return SPIRV::OpSGreaterThan;
2934 case CmpInst::ICMP_SLE:
2935 return SPIRV::OpSLessThanEqual;
2936 case CmpInst::ICMP_SLT:
2937 return SPIRV::OpSLessThan;
2938 case CmpInst::ICMP_UGE:
2939 return SPIRV::OpUGreaterThanEqual;
2940 case CmpInst::ICMP_UGT:
2941 return SPIRV::OpUGreaterThan;
2942 case CmpInst::ICMP_ULE:
2943 return SPIRV::OpULessThanEqual;
2944 case CmpInst::ICMP_ULT:
2945 return SPIRV::OpULessThan;
2946 default:
2947 llvm_unreachable("Unknown predicate type for ICmp");
2948 }
2949}
2950
2951static unsigned getPtrCmpOpcode(unsigned Pred) {
2952 switch (static_cast<CmpInst::Predicate>(Pred)) {
2953 case CmpInst::ICMP_EQ:
2954 return SPIRV::OpPtrEqual;
2955 case CmpInst::ICMP_NE:
2956 return SPIRV::OpPtrNotEqual;
2957 default:
2958 llvm_unreachable("Unknown predicate type for pointer comparison");
2959 }
2960}
2961
2962// Return the logical operation, or abort if none exists.
2963static unsigned getBoolCmpOpcode(unsigned PredNum) {
2964 auto Pred = static_cast<CmpInst::Predicate>(PredNum);
2965 switch (Pred) {
2966 case CmpInst::ICMP_EQ:
2967 return SPIRV::OpLogicalEqual;
2968 case CmpInst::ICMP_NE:
2969 return SPIRV::OpLogicalNotEqual;
2970 default:
2971 llvm_unreachable("Unknown predicate type for Bool comparison");
2972 }
2973}
2974
2975static APFloat getZeroFP(const Type *LLVMFloatTy) {
2976 if (!LLVMFloatTy)
2977 return APFloat::getZero(APFloat::IEEEsingle());
2978 switch (LLVMFloatTy->getScalarType()->getTypeID()) {
2979 case Type::HalfTyID:
2980 return APFloat::getZero(APFloat::IEEEhalf());
2981 default:
2982 case Type::FloatTyID:
2983 return APFloat::getZero(APFloat::IEEEsingle());
2984 case Type::DoubleTyID:
2985 return APFloat::getZero(APFloat::IEEEdouble());
2986 }
2987}
2988
2989static APFloat getOneFP(const Type *LLVMFloatTy) {
2990 if (!LLVMFloatTy)
2991 return APFloat::getOne(APFloat::IEEEsingle());
2992 switch (LLVMFloatTy->getScalarType()->getTypeID()) {
2993 case Type::HalfTyID:
2994 return APFloat::getOne(APFloat::IEEEhalf());
2995 default:
2996 case Type::FloatTyID:
2997 return APFloat::getOne(APFloat::IEEEsingle());
2998 case Type::DoubleTyID:
2999 return APFloat::getOne(APFloat::IEEEdouble());
3000 }
3001}
3002
3003bool SPIRVInstructionSelector::selectAnyOrAll(Register ResVReg,
3004 SPIRVTypeInst ResType,
3005 MachineInstr &I,
3006 unsigned OpAnyOrAll) const {
3007 assert(I.getNumOperands() == 3);
3008 assert(I.getOperand(2).isReg());
3009 MachineBasicBlock &BB = *I.getParent();
3010 Register InputRegister = I.getOperand(2).getReg();
3011 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3012
3013 assert(InputType && "VReg has no type assigned");
3014
3015 bool IsBoolTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeBool);
3016 bool IsVectorTy = InputType->getOpcode() == SPIRV::OpTypeVector;
3017 if (IsBoolTy && !IsVectorTy) {
3018 assert(ResVReg == I.getOperand(0).getReg());
3019 return BuildCOPY(ResVReg, InputRegister, I);
3020 }
3021
3022 bool IsFloatTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3023 unsigned SpirvNotEqualId =
3024 IsFloatTy ? SPIRV::OpFOrdNotEqual : SPIRV::OpINotEqual;
3025 SPIRVTypeInst SpvBoolScalarTy = GR.getOrCreateSPIRVBoolType(I, TII);
3026 SPIRVTypeInst SpvBoolTy = SpvBoolScalarTy;
3027 Register NotEqualReg = ResVReg;
3028
3029 if (IsVectorTy) {
3030 NotEqualReg =
3031 IsBoolTy ? InputRegister
3032 : createVirtualRegister(SpvBoolTy, &GR, MRI, MRI->getMF());
3033 const unsigned NumElts = GR.getScalarOrVectorComponentCount(InputType);
3034 SpvBoolTy = GR.getOrCreateSPIRVVectorType(SpvBoolTy, NumElts, I, TII);
3035 }
3036
3037 if (!IsBoolTy) {
3038 Register ConstZeroReg =
3039 IsFloatTy ? buildZerosValF(InputType, I) : buildZerosVal(InputType, I);
3040
3041 BuildMI(BB, I, I.getDebugLoc(), TII.get(SpirvNotEqualId))
3042 .addDef(NotEqualReg)
3043 .addUse(GR.getSPIRVTypeID(SpvBoolTy))
3044 .addUse(InputRegister)
3045 .addUse(ConstZeroReg)
3046 .constrainAllUses(TII, TRI, RBI);
3047 }
3048
3049 if (IsVectorTy)
3050 BuildMI(BB, I, I.getDebugLoc(), TII.get(OpAnyOrAll))
3051 .addDef(ResVReg)
3052 .addUse(GR.getSPIRVTypeID(SpvBoolScalarTy))
3053 .addUse(NotEqualReg)
3054 .constrainAllUses(TII, TRI, RBI);
3055 return true;
3056}
3057
3058bool SPIRVInstructionSelector::selectAll(Register ResVReg,
3059 SPIRVTypeInst ResType,
3060 MachineInstr &I) const {
3061 return selectAnyOrAll(ResVReg, ResType, I, SPIRV::OpAll);
3062}
3063
3064bool SPIRVInstructionSelector::selectAny(Register ResVReg,
3065 SPIRVTypeInst ResType,
3066 MachineInstr &I) const {
3067 return selectAnyOrAll(ResVReg, ResType, I, SPIRV::OpAny);
3068}
3069
3070// Select the OpDot instruction for the given float dot
3071bool SPIRVInstructionSelector::selectFloatDot(Register ResVReg,
3072 SPIRVTypeInst ResType,
3073 MachineInstr &I) const {
3074 assert(I.getNumOperands() == 4);
3075 assert(I.getOperand(2).isReg());
3076 assert(I.getOperand(3).isReg());
3077
3078 [[maybe_unused]] SPIRVTypeInst VecType =
3079 GR.getSPIRVTypeForVReg(I.getOperand(2).getReg());
3080
3081 assert(VecType->getOpcode() == SPIRV::OpTypeVector &&
3082 GR.getScalarOrVectorComponentCount(VecType) > 1 &&
3083 "dot product requires a vector of at least 2 components");
3084
3085 [[maybe_unused]] SPIRVTypeInst EltType =
3086 GR.getScalarOrVectorComponentType(VecType);
3087
3088 assert(EltType->getOpcode() == SPIRV::OpTypeFloat);
3089
3090 MachineBasicBlock &BB = *I.getParent();
3091 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpDot))
3092 .addDef(ResVReg)
3093 .addUse(GR.getSPIRVTypeID(ResType))
3094 .addUse(I.getOperand(2).getReg())
3095 .addUse(I.getOperand(3).getReg())
3096 .constrainAllUses(TII, TRI, RBI);
3097 return true;
3098}
3099
3100bool SPIRVInstructionSelector::selectIntegerDot(Register ResVReg,
3101 SPIRVTypeInst ResType,
3102 MachineInstr &I,
3103 bool Signed) const {
3104 assert(I.getNumOperands() == 4);
3105 assert(I.getOperand(2).isReg());
3106 assert(I.getOperand(3).isReg());
3107 MachineBasicBlock &BB = *I.getParent();
3108
3109 auto DotOp = Signed ? SPIRV::OpSDot : SPIRV::OpUDot;
3110 BuildMI(BB, I, I.getDebugLoc(), TII.get(DotOp))
3111 .addDef(ResVReg)
3112 .addUse(GR.getSPIRVTypeID(ResType))
3113 .addUse(I.getOperand(2).getReg())
3114 .addUse(I.getOperand(3).getReg())
3115 .constrainAllUses(TII, TRI, RBI);
3116 return true;
3117}
3118
3119// Since pre-1.6 SPIRV has no integer dot implementation,
3120// expand by piecewise multiplying and adding the results
3121bool SPIRVInstructionSelector::selectIntegerDotExpansion(
3122 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3123 assert(I.getNumOperands() == 4);
3124 assert(I.getOperand(2).isReg());
3125 assert(I.getOperand(3).isReg());
3126 MachineBasicBlock &BB = *I.getParent();
3127
3128 // Multiply the vectors, then sum the results
3129 Register Vec0 = I.getOperand(2).getReg();
3130 Register Vec1 = I.getOperand(3).getReg();
3131 Register TmpVec = MRI->createVirtualRegister(GR.getRegClass(ResType));
3132 SPIRVTypeInst VecType = GR.getSPIRVTypeForVReg(Vec0);
3133
3134 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIMulV))
3135 .addDef(TmpVec)
3136 .addUse(GR.getSPIRVTypeID(VecType))
3137 .addUse(Vec0)
3138 .addUse(Vec1)
3139 .constrainAllUses(TII, TRI, RBI);
3140
3141 assert(VecType->getOpcode() == SPIRV::OpTypeVector &&
3142 GR.getScalarOrVectorComponentCount(VecType) > 1 &&
3143 "dot product requires a vector of at least 2 components");
3144
3145 Register Res = MRI->createVirtualRegister(GR.getRegClass(ResType));
3146 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
3147 .addDef(Res)
3148 .addUse(GR.getSPIRVTypeID(ResType))
3149 .addUse(TmpVec)
3150 .addImm(0)
3151 .constrainAllUses(TII, TRI, RBI);
3152
3153 for (unsigned i = 1; i < GR.getScalarOrVectorComponentCount(VecType); i++) {
3154 Register Elt = MRI->createVirtualRegister(GR.getRegClass(ResType));
3155
3156 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
3157 .addDef(Elt)
3158 .addUse(GR.getSPIRVTypeID(ResType))
3159 .addUse(TmpVec)
3160 .addImm(i)
3161 .constrainAllUses(TII, TRI, RBI);
3162
3163 Register Sum = i < GR.getScalarOrVectorComponentCount(VecType) - 1
3164 ? MRI->createVirtualRegister(GR.getRegClass(ResType))
3165 : ResVReg;
3166
3167 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
3168 .addDef(Sum)
3169 .addUse(GR.getSPIRVTypeID(ResType))
3170 .addUse(Res)
3171 .addUse(Elt)
3172 .constrainAllUses(TII, TRI, RBI);
3173 Res = Sum;
3174 }
3175
3176 return true;
3177}
3178
3179bool SPIRVInstructionSelector::selectOpIsInf(Register ResVReg,
3180 SPIRVTypeInst ResType,
3181 MachineInstr &I) const {
3182 MachineBasicBlock &BB = *I.getParent();
3183 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsInf))
3184 .addDef(ResVReg)
3185 .addUse(GR.getSPIRVTypeID(ResType))
3186 .addUse(I.getOperand(2).getReg())
3187 .constrainAllUses(TII, TRI, RBI);
3188 return true;
3189}
3190
3191bool SPIRVInstructionSelector::selectOpIsNan(Register ResVReg,
3192 SPIRVTypeInst ResType,
3193 MachineInstr &I) const {
3194 MachineBasicBlock &BB = *I.getParent();
3195 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsNan))
3196 .addDef(ResVReg)
3197 .addUse(GR.getSPIRVTypeID(ResType))
3198 .addUse(I.getOperand(2).getReg())
3199 .constrainAllUses(TII, TRI, RBI);
3200 return true;
3201}
3202
3203bool SPIRVInstructionSelector::selectOpIsFinite(Register ResVReg,
3204 SPIRVTypeInst ResType,
3205 MachineInstr &I) const {
3206 MachineBasicBlock &BB = *I.getParent();
3207 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsFinite))
3208 .addDef(ResVReg)
3209 .addUse(GR.getSPIRVTypeID(ResType))
3210 .addUse(I.getOperand(2).getReg())
3211 .constrainAllUses(TII, TRI, RBI);
3212 return true;
3213}
3214
3215bool SPIRVInstructionSelector::selectOpIsNormal(Register ResVReg,
3216 SPIRVTypeInst ResType,
3217 MachineInstr &I) const {
3218 MachineBasicBlock &BB = *I.getParent();
3219 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsNormal))
3220 .addDef(ResVReg)
3221 .addUse(GR.getSPIRVTypeID(ResType))
3222 .addUse(I.getOperand(2).getReg())
3223 .constrainAllUses(TII, TRI, RBI);
3224 return true;
3225}
3226
3227template <bool Signed>
3228bool SPIRVInstructionSelector::selectDot4AddPacked(Register ResVReg,
3229 SPIRVTypeInst ResType,
3230 MachineInstr &I) const {
3231 assert(I.getNumOperands() == 5);
3232 assert(I.getOperand(2).isReg());
3233 assert(I.getOperand(3).isReg());
3234 assert(I.getOperand(4).isReg());
3235 MachineBasicBlock &BB = *I.getParent();
3236
3237 Register Acc = I.getOperand(2).getReg();
3238 Register X = I.getOperand(3).getReg();
3239 Register Y = I.getOperand(4).getReg();
3240
3241 auto DotOp = Signed ? SPIRV::OpSDot : SPIRV::OpUDot;
3242 Register Dot = MRI->createVirtualRegister(GR.getRegClass(ResType));
3243 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(DotOp))
3244 .addDef(Dot)
3245 .addUse(GR.getSPIRVTypeID(ResType))
3246 .addUse(X)
3247 .addUse(Y);
3248 MIB.addImm(SPIRV::BuiltIn::PackedVectorFormat4x8Bit);
3249 MIB.constrainAllUses(TII, TRI, RBI);
3250
3251 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
3252 .addDef(ResVReg)
3253 .addUse(GR.getSPIRVTypeID(ResType))
3254 .addUse(Dot)
3255 .addUse(Acc)
3256 .constrainAllUses(TII, TRI, RBI);
3257 return true;
3258}
3259
3260// Since pre-1.6 SPIRV has no DotProductInput4x8BitPacked implementation,
3261// extract the elements of the packed inputs, multiply them and add the result
3262// to the accumulator.
3263template <bool Signed>
3264bool SPIRVInstructionSelector::selectDot4AddPackedExpansion(
3265 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3266 assert(I.getNumOperands() == 5);
3267 assert(I.getOperand(2).isReg());
3268 assert(I.getOperand(3).isReg());
3269 assert(I.getOperand(4).isReg());
3270 MachineBasicBlock &BB = *I.getParent();
3271
3272 Register Acc = I.getOperand(2).getReg();
3273 Register X = I.getOperand(3).getReg();
3274 Register Y = I.getOperand(4).getReg();
3275
3276 SPIRVTypeInst EltType = GR.getOrCreateSPIRVIntegerType(8, I, TII);
3277 auto ExtractOp =
3278 Signed ? SPIRV::OpBitFieldSExtract : SPIRV::OpBitFieldUExtract;
3279
3280 bool ZeroAsNull = !STI.isShader();
3281 // Extract the i8 element, multiply and add it to the accumulator
3282 for (unsigned i = 0; i < 4; i++) {
3283 // A[i]
3284 Register AElt = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3285 BuildMI(BB, I, I.getDebugLoc(), TII.get(ExtractOp))
3286 .addDef(AElt)
3287 .addUse(GR.getSPIRVTypeID(ResType))
3288 .addUse(X)
3289 .addUse(GR.getOrCreateConstInt(i * 8, I, EltType, TII, ZeroAsNull))
3290 .addUse(GR.getOrCreateConstInt(8, I, EltType, TII, ZeroAsNull))
3291 .constrainAllUses(TII, TRI, RBI);
3292
3293 // B[i]
3294 Register BElt = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3295 BuildMI(BB, I, I.getDebugLoc(), TII.get(ExtractOp))
3296 .addDef(BElt)
3297 .addUse(GR.getSPIRVTypeID(ResType))
3298 .addUse(Y)
3299 .addUse(GR.getOrCreateConstInt(i * 8, I, EltType, TII, ZeroAsNull))
3300 .addUse(GR.getOrCreateConstInt(8, I, EltType, TII, ZeroAsNull))
3301 .constrainAllUses(TII, TRI, RBI);
3302
3303 // A[i] * B[i]
3304 Register Mul = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3305 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIMulS))
3306 .addDef(Mul)
3307 .addUse(GR.getSPIRVTypeID(ResType))
3308 .addUse(AElt)
3309 .addUse(BElt)
3310 .constrainAllUses(TII, TRI, RBI);
3311
3312 // Discard 24 highest-bits so that stored i32 register is i8 equivalent
3313 Register MaskMul = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3314 BuildMI(BB, I, I.getDebugLoc(), TII.get(ExtractOp))
3315 .addDef(MaskMul)
3316 .addUse(GR.getSPIRVTypeID(ResType))
3317 .addUse(Mul)
3318 .addUse(GR.getOrCreateConstInt(0, I, EltType, TII, ZeroAsNull))
3319 .addUse(GR.getOrCreateConstInt(8, I, EltType, TII, ZeroAsNull))
3320 .constrainAllUses(TII, TRI, RBI);
3321
3322 // Acc = Acc + A[i] * B[i]
3323 Register Sum =
3324 i < 3 ? MRI->createVirtualRegister(&SPIRV::IDRegClass) : ResVReg;
3325 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
3326 .addDef(Sum)
3327 .addUse(GR.getSPIRVTypeID(ResType))
3328 .addUse(Acc)
3329 .addUse(MaskMul)
3330 .constrainAllUses(TII, TRI, RBI);
3331
3332 Acc = Sum;
3333 }
3334
3335 return true;
3336}
3337
3338/// Transform saturate(x) to clamp(x, 0.0f, 1.0f) as SPIRV
3339/// does not have a saturate builtin.
3340bool SPIRVInstructionSelector::selectSaturate(Register ResVReg,
3341 SPIRVTypeInst ResType,
3342 MachineInstr &I) const {
3343 assert(I.getNumOperands() == 3);
3344 assert(I.getOperand(2).isReg());
3345 MachineBasicBlock &BB = *I.getParent();
3346 Register VZero = buildZerosValF(ResType, I);
3347 Register VOne = buildOnesValF(ResType, I);
3348
3349 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
3350 .addDef(ResVReg)
3351 .addUse(GR.getSPIRVTypeID(ResType))
3352 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
3353 .addImm(GL::FClamp)
3354 .addUse(I.getOperand(2).getReg())
3355 .addUse(VZero)
3356 .addUse(VOne)
3357 .constrainAllUses(TII, TRI, RBI);
3358 return true;
3359}
3360
3361bool SPIRVInstructionSelector::selectSign(Register ResVReg,
3362 SPIRVTypeInst ResType,
3363 MachineInstr &I) const {
3364 assert(I.getNumOperands() == 3);
3365 assert(I.getOperand(2).isReg());
3366 MachineBasicBlock &BB = *I.getParent();
3367 Register InputRegister = I.getOperand(2).getReg();
3368 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3369 auto &DL = I.getDebugLoc();
3370
3371 if (!InputType)
3372 return diagnoseUnsupported(I, "Input Type could not be determined.");
3373
3374 bool IsFloatTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3375
3376 unsigned SignBitWidth = GR.getScalarOrVectorBitWidth(InputType);
3377 unsigned ResBitWidth = GR.getScalarOrVectorBitWidth(ResType);
3378
3379 bool NeedsConversion = IsFloatTy || SignBitWidth != ResBitWidth;
3380
3381 auto SignOpcode = IsFloatTy ? GL::FSign : GL::SSign;
3382 Register SignReg = NeedsConversion
3383 ? MRI->createVirtualRegister(&SPIRV::IDRegClass)
3384 : ResVReg;
3385
3386 BuildMI(BB, I, DL, TII.get(SPIRV::OpExtInst))
3387 .addDef(SignReg)
3388 .addUse(GR.getSPIRVTypeID(InputType))
3389 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
3390 .addImm(SignOpcode)
3391 .addUse(InputRegister)
3392 .constrainAllUses(TII, TRI, RBI);
3393
3394 if (NeedsConversion) {
3395 auto ConvertOpcode = IsFloatTy ? SPIRV::OpConvertFToS : SPIRV::OpSConvert;
3396 BuildMI(*I.getParent(), I, DL, TII.get(ConvertOpcode))
3397 .addDef(ResVReg)
3398 .addUse(GR.getSPIRVTypeID(ResType))
3399 .addUse(SignReg)
3400 .constrainAllUses(TII, TRI, RBI);
3401 }
3402
3403 return true;
3404}
3405
3406bool SPIRVInstructionSelector::selectWaveOpInst(Register ResVReg,
3407 SPIRVTypeInst ResType,
3408 MachineInstr &I,
3409 unsigned Opcode) const {
3410 MachineBasicBlock &BB = *I.getParent();
3411 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3412
3413 auto BMI = BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
3414 .addDef(ResVReg)
3415 .addUse(GR.getSPIRVTypeID(ResType))
3416 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I,
3417 IntTy, TII, !STI.isShader()));
3418
3419 for (unsigned J = 2; J < I.getNumOperands(); J++) {
3420 BMI.addUse(I.getOperand(J).getReg());
3421 }
3422
3423 BMI.constrainAllUses(TII, TRI, RBI);
3424 return true;
3425}
3426
3427bool SPIRVInstructionSelector::selectBarrierInst(MachineInstr &I,
3428 unsigned Scope,
3429 unsigned MemSem,
3430 bool WithGroupSync) const {
3431 auto BarrierType =
3432 WithGroupSync ? SPIRV::OpControlBarrier : SPIRV::OpMemoryBarrier;
3433
3434 MemSem |= SPIRV::MemorySemantics::AcquireRelease;
3435
3436 assert(((Scope != SPIRV::Scope::Workgroup) ||
3437 ((MemSem & SPIRV::MemorySemantics::WorkgroupMemory) > 0)) &&
3438 "Workgroup Scope must set WorkGroupMemory semantic "
3439 "in Barrier instruction");
3440
3441 assert(((Scope != SPIRV::Scope::Device) ||
3442 ((MemSem & SPIRV::MemorySemantics::UniformMemory) > 0 &&
3443 (MemSem & SPIRV::MemorySemantics::ImageMemory) > 0)) &&
3444 "Device Scope must set UniformMemory and ImageMemory semantic "
3445 "in Barrier instruction");
3446
3447 MachineBasicBlock &BB = *I.getParent();
3448 auto MI = BuildMI(BB, I, I.getDebugLoc(), TII.get(BarrierType));
3449
3450 // OpControlBarrier needs to also set Execution Scope
3451 if (WithGroupSync) {
3452 Register ExecReg = buildI32Constant(SPIRV::Scope::Workgroup, I);
3453 MI.addUse(ExecReg);
3454 }
3455
3456 Register ScopeReg = buildI32Constant(Scope, I);
3457 Register MemSemReg = buildI32Constant(MemSem, I);
3458
3459 MI.addUse(ScopeReg).addUse(MemSemReg).constrainAllUses(TII, TRI, RBI);
3460 return true;
3461}
3462
3463bool SPIRVInstructionSelector::selectWaveActiveCountBits(
3464 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3465
3466 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3467 SPIRVTypeInst BallotType = GR.getOrCreateSPIRVVectorType(IntTy, 4, I, TII);
3468 Register BallotReg = MRI->createVirtualRegister(GR.getRegClass(BallotType));
3469 if (!selectWaveOpInst(BallotReg, BallotType, I,
3470 SPIRV::OpGroupNonUniformBallot))
3471 return false;
3472
3473 MachineBasicBlock &BB = *I.getParent();
3474 BuildMI(BB, I, I.getDebugLoc(),
3475 TII.get(SPIRV::OpGroupNonUniformBallotBitCount))
3476 .addDef(ResVReg)
3477 .addUse(GR.getSPIRVTypeID(ResType))
3478 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3479 !STI.isShader()))
3480 .addImm(SPIRV::GroupOperation::Reduce)
3481 .addUse(BallotReg)
3482 .constrainAllUses(TII, TRI, RBI);
3483
3484 return true;
3485}
3486
3487bool SPIRVInstructionSelector::selectWaveActiveAllEqual(Register ResVReg,
3488 SPIRVTypeInst ResType,
3489 MachineInstr &I) const {
3490 MachineBasicBlock &BB = *I.getParent();
3491 const DebugLoc &DL = I.getDebugLoc();
3492
3493 // Input to the intrinsic
3494 Register InputReg = I.getOperand(2).getReg();
3495 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputReg);
3496
3497 // Determine if input is vector
3498 unsigned NumElems = GR.getScalarOrVectorComponentCount(InputType);
3499 bool IsVector = NumElems > 1;
3500
3501 // Determine element types
3502 SPIRVTypeInst ElemInputType = GR.getScalarOrVectorComponentType(InputType);
3503 SPIRVTypeInst ElemBoolType = GR.getScalarOrVectorComponentType(ResType);
3504
3505 // Subgroup scope constant
3506 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3507 Register ScopeConst = GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy,
3508 TII, !STI.isShader());
3509
3510 // Scalar case
3511 if (!IsVector) {
3512 return selectWaveOpInst(ResVReg, ElemBoolType, I,
3513 SPIRV::OpGroupNonUniformAllEqual);
3514 }
3515
3516 // Vector case
3517 SmallVector<Register, 4> ElementResults;
3518 ElementResults.reserve(NumElems);
3519
3520 for (unsigned Idx = 0; Idx < NumElems; ++Idx) {
3521 // Extract element
3522 Register ElemInput = InputReg;
3523 Register Extracted =
3524 MRI->createVirtualRegister(GR.getRegClass(ElemInputType));
3525
3526 BuildMI(BB, I, DL, TII.get(SPIRV::OpCompositeExtract))
3527 .addDef(Extracted)
3528 .addUse(GR.getSPIRVTypeID(ElemInputType))
3529 .addUse(InputReg)
3530 .addImm(Idx)
3531 .constrainAllUses(TII, TRI, RBI);
3532
3533 ElemInput = Extracted;
3534
3535 // Emit per-element AllEqual
3536 Register ElemResult =
3537 MRI->createVirtualRegister(GR.getRegClass(ElemBoolType));
3538
3539 BuildMI(BB, I, DL, TII.get(SPIRV::OpGroupNonUniformAllEqual))
3540 .addDef(ElemResult)
3541 .addUse(GR.getSPIRVTypeID(ElemBoolType))
3542 .addUse(ScopeConst)
3543 .addUse(ElemInput)
3544 .constrainAllUses(TII, TRI, RBI);
3545
3546 ElementResults.push_back(ElemResult);
3547 }
3548
3549 // Reconstruct vector<bool>
3550 auto MIB = BuildMI(BB, I, DL, TII.get(SPIRV::OpCompositeConstruct))
3551 .addDef(ResVReg)
3552 .addUse(GR.getSPIRVTypeID(ResType));
3553 for (Register R : ElementResults)
3554 MIB.addUse(R);
3555
3556 MIB.constrainAllUses(TII, TRI, RBI);
3557
3558 return true;
3559}
3560
3561bool SPIRVInstructionSelector::selectWavePrefixBitCount(Register ResVReg,
3562 SPIRVTypeInst ResType,
3563 MachineInstr &I) const {
3564
3565 assert(I.getNumOperands() == 3);
3566
3567 auto Op = I.getOperand(2);
3568 assert(Op.isReg());
3569
3570 MachineBasicBlock &BB = *I.getParent();
3571 DebugLoc DL = I.getDebugLoc();
3572
3573 Register InputRegister = Op.getReg();
3574 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3575
3576 if (!InputType)
3577 return diagnoseUnsupported(I, "Input Type could not be determined.");
3578
3579 if (InputType->getOpcode() != SPIRV::OpTypeBool)
3580 return diagnoseUnsupported(I, "WavePrefixBitCount requires boolean input");
3581
3582 // Types
3583 SPIRVTypeInst Int32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3584
3585 // Ballot result type: vector<uint32>
3586 // Match DXC: %v4uint for Subgroup size
3587 SPIRVTypeInst BallotTy = GR.getOrCreateSPIRVVectorType(Int32Ty, 4, I, TII);
3588
3589 // Create a vreg for the ballot result
3590 Register BallotVReg = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3591
3592 // 1. OpGroupNonUniformBallot
3593 BuildMI(BB, I, DL, TII.get(SPIRV::OpGroupNonUniformBallot))
3594 .addDef(BallotVReg)
3595 .addUse(GR.getSPIRVTypeID(BallotTy))
3596 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, Int32Ty, TII))
3597 .addUse(InputRegister)
3598 .constrainAllUses(TII, TRI, RBI);
3599
3600 // 2. OpGroupNonUniformBallotBitCount
3601 BuildMI(BB, I, DL, TII.get(SPIRV::OpGroupNonUniformBallotBitCount))
3602 .addDef(ResVReg)
3603 .addUse(GR.getSPIRVTypeID(ResType))
3604 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, Int32Ty, TII))
3605 .addImm(SPIRV::GroupOperation::ExclusiveScan)
3606 .addUse(BallotVReg)
3607 .constrainAllUses(TII, TRI, RBI);
3608
3609 return true;
3610}
3611
3612bool SPIRVInstructionSelector::selectWaveReduceMax(Register ResVReg,
3613 SPIRVTypeInst ResType,
3614 MachineInstr &I,
3615 bool IsUnsigned) const {
3616 return selectWaveReduce(
3617 ResVReg, ResType, I, IsUnsigned,
3618 [&](Register InputRegister, bool IsUnsigned) {
3619 const bool IsFloatTy =
3620 GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3621 const auto IntOp = IsUnsigned ? SPIRV::OpGroupNonUniformUMax
3622 : SPIRV::OpGroupNonUniformSMax;
3623 return IsFloatTy ? SPIRV::OpGroupNonUniformFMax : IntOp;
3624 });
3625}
3626
3627bool SPIRVInstructionSelector::selectWaveReduceMin(Register ResVReg,
3628 SPIRVTypeInst ResType,
3629 MachineInstr &I,
3630 bool IsUnsigned) const {
3631 return selectWaveReduce(
3632 ResVReg, ResType, I, IsUnsigned,
3633 [&](Register InputRegister, bool IsUnsigned) {
3634 const bool IsFloatTy =
3635 GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3636 const auto IntOp = IsUnsigned ? SPIRV::OpGroupNonUniformUMin
3637 : SPIRV::OpGroupNonUniformSMin;
3638 return IsFloatTy ? SPIRV::OpGroupNonUniformFMin : IntOp;
3639 });
3640}
3641
3642bool SPIRVInstructionSelector::selectWaveReduceSum(Register ResVReg,
3643 SPIRVTypeInst ResType,
3644 MachineInstr &I) const {
3645 return selectWaveReduce(ResVReg, ResType, I, /*IsUnsigned*/ false,
3646 [&](Register InputRegister, bool IsUnsigned) {
3647 bool IsFloatTy = GR.isScalarOrVectorOfType(
3648 InputRegister, SPIRV::OpTypeFloat);
3649 return IsFloatTy ? SPIRV::OpGroupNonUniformFAdd
3650 : SPIRV::OpGroupNonUniformIAdd;
3651 });
3652}
3653
3654bool SPIRVInstructionSelector::selectWaveReduceProduct(Register ResVReg,
3655 SPIRVTypeInst ResType,
3656 MachineInstr &I) const {
3657 return selectWaveReduce(ResVReg, ResType, I, /*IsUnsigned*/ false,
3658 [&](Register InputRegister, bool IsUnsigned) {
3659 bool IsFloatTy = GR.isScalarOrVectorOfType(
3660 InputRegister, SPIRV::OpTypeFloat);
3661 return IsFloatTy ? SPIRV::OpGroupNonUniformFMul
3662 : SPIRV::OpGroupNonUniformIMul;
3663 });
3664}
3665
3666template <typename PickOpcodeFn>
3667bool SPIRVInstructionSelector::selectWaveReduce(
3668 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, bool IsUnsigned,
3669 PickOpcodeFn &&PickOpcode) const {
3670 assert(I.getNumOperands() == 3);
3671 assert(I.getOperand(2).isReg());
3672 MachineBasicBlock &BB = *I.getParent();
3673 Register InputRegister = I.getOperand(2).getReg();
3674 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3675
3676 if (!InputType)
3677 return diagnoseUnsupported(I, "Input Type could not be determined.");
3678
3679 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3680 const unsigned Opcode = PickOpcode(InputRegister, IsUnsigned);
3681 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
3682 .addDef(ResVReg)
3683 .addUse(GR.getSPIRVTypeID(ResType))
3684 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3685 !STI.isShader()))
3686 .addImm(SPIRV::GroupOperation::Reduce)
3687 .addUse(I.getOperand(2).getReg())
3688 .constrainAllUses(TII, TRI, RBI);
3689 return true;
3690}
3691
3692bool SPIRVInstructionSelector::selectWaveReduceOp(Register ResVReg,
3693 SPIRVTypeInst ResType,
3694 MachineInstr &I,
3695 unsigned Opcode) const {
3696 return selectWaveReduce(
3697 ResVReg, ResType, I, false,
3698 [&](Register InputRegister, bool IsUnsigned) { return Opcode; });
3699}
3700
3701bool SPIRVInstructionSelector::selectWaveExclusiveScanSum(
3702 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3703 return selectWaveExclusiveScan(ResVReg, ResType, I, /*IsUnsigned*/ false,
3704 [&](Register InputRegister, bool IsUnsigned) {
3705 bool IsFloatTy = GR.isScalarOrVectorOfType(
3706 InputRegister, SPIRV::OpTypeFloat);
3707 return IsFloatTy
3708 ? SPIRV::OpGroupNonUniformFAdd
3709 : SPIRV::OpGroupNonUniformIAdd;
3710 });
3711}
3712
3713bool SPIRVInstructionSelector::selectWaveExclusiveScanProduct(
3714 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3715 return selectWaveExclusiveScan(ResVReg, ResType, I, /*IsUnsigned*/ false,
3716 [&](Register InputRegister, bool IsUnsigned) {
3717 bool IsFloatTy = GR.isScalarOrVectorOfType(
3718 InputRegister, SPIRV::OpTypeFloat);
3719 return IsFloatTy
3720 ? SPIRV::OpGroupNonUniformFMul
3721 : SPIRV::OpGroupNonUniformIMul;
3722 });
3723}
3724
3725template <typename PickOpcodeFn>
3726bool SPIRVInstructionSelector::selectWaveExclusiveScan(
3727 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, bool IsUnsigned,
3728 PickOpcodeFn &&PickOpcode) const {
3729 assert(I.getNumOperands() == 3);
3730 assert(I.getOperand(2).isReg());
3731 MachineBasicBlock &BB = *I.getParent();
3732 Register InputRegister = I.getOperand(2).getReg();
3733 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3734
3735 if (!InputType)
3736 return diagnoseUnsupported(I, "Input Type could not be determined.");
3737
3738 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3739 const unsigned Opcode = PickOpcode(InputRegister, IsUnsigned);
3740 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
3741 .addDef(ResVReg)
3742 .addUse(GR.getSPIRVTypeID(ResType))
3743 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3744 !STI.isShader()))
3745 .addImm(SPIRV::GroupOperation::ExclusiveScan)
3746 .addUse(I.getOperand(2).getReg())
3747 .constrainAllUses(TII, TRI, RBI);
3748 return true;
3749}
3750
3751bool SPIRVInstructionSelector::selectQuadSwap(Register ResVReg,
3752 SPIRVTypeInst ResType,
3753 MachineInstr &I,
3754 unsigned Direction) const {
3755 assert(I.getNumOperands() == 3);
3756 assert(I.getOperand(2).isReg());
3757 MachineBasicBlock &BB = *I.getParent();
3758 Register InputRegister = I.getOperand(2).getReg();
3759
3760 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3761 bool ZeroAsNull = !STI.isShader();
3762 Register DirectionReg =
3763 GR.getOrCreateConstInt(Direction, I, IntTy, TII, ZeroAsNull);
3764 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpGroupNonUniformQuadSwap))
3765 .addDef(ResVReg)
3766 .addUse(GR.getSPIRVTypeID(ResType))
3767 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3768 ZeroAsNull))
3769 .addUse(InputRegister)
3770 .addUse(DirectionReg)
3771 .constrainAllUses(TII, TRI, RBI);
3772 return true;
3773}
3774
3775bool SPIRVInstructionSelector::selectBitreverse16(Register ResVReg,
3776 SPIRVTypeInst ResType,
3777 MachineInstr &I,
3778 Register Op) const {
3779 SPIRVTypeInst Int32Type = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3780 Register ShiftConst = GR.getOrCreateConstInt(16, I, Int32Type, TII);
3781 unsigned ShiftOp = SPIRV::OpShiftRightLogicalS;
3782
3783 const unsigned N = GR.getScalarOrVectorComponentCount(ResType);
3784 const unsigned ExtendOpcode = GR.isScalarOrVectorSigned(ResType)
3785 ? SPIRV::OpSConvert
3786 : SPIRV::OpUConvert;
3787
3788 if (N > 1) {
3789 Int32Type = GR.getOrCreateSPIRVVectorType(Int32Type, N, I, TII);
3790 ShiftOp = SPIRV::OpShiftRightLogicalV;
3791
3792 // Vector shifts require a composite constant
3793 const Register CompositeReg =
3794 MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3795 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
3796 TII.get(SPIRV::OpConstantComposite))
3797 .addDef(CompositeReg)
3798 .addUse(GR.getSPIRVTypeID(Int32Type));
3799 for (unsigned It = 0; It < N; ++It)
3800 MIB.addUse(ShiftConst);
3801 MIB.constrainAllUses(TII, TRI, RBI);
3802
3803 ShiftConst = CompositeReg;
3804 }
3805
3806 // Converts the i16 input to i32 (or vector of i32)
3807 Register ExtReg = MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3808 if (!selectOpWithSrcs(ExtReg, Int32Type, I, {Op}, ExtendOpcode))
3809 return false;
3810
3811 // Perform bitreverse on the i32 value
3812 Register BitrevReg = MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3813 if (!selectBitreverseNative(BitrevReg, Int32Type, I, ExtReg))
3814 return false;
3815
3816 // Shift the bit-reversed value to get the final result.
3817 Register ShiftReg = MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3818 if (!selectOpWithSrcs(ShiftReg, Int32Type, I, {BitrevReg, ShiftConst},
3819 ShiftOp))
3820 return false;
3821
3822 // Finally, convert the result back to i16 (or vector of i16).
3823 return selectOpWithSrcs(ResVReg, ResType, I, {ShiftReg}, ExtendOpcode);
3824}
3825
3826bool SPIRVInstructionSelector::handle64BitOverflow(
3827 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, Register SrcReg,
3828 unsigned int Opcode,
3829 std::function<bool(Register, SPIRVTypeInst, MachineInstr &, Register,
3830 unsigned)>
3831 CallbackFunction) const {
3832
3833 SPIRVTypeInst BaseType = GR.retrieveScalarOrVectorIntType(ResType);
3834 assert(BaseType->getOpcode() == SPIRV::OpTypeInt &&
3835 "handle64BitOverflow should only be used for integer types");
3836 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
3837 assert(ComponentCount < 5 && "Vec 5+ will generate invalid SPIR-V ops");
3838
3839 MachineIRBuilder MIRBuilder(I);
3840 SPIRVTypeInst I64Type = GR.getOrCreateSPIRVIntegerType(64, MIRBuilder);
3841 SPIRVTypeInst I64x2Type =
3842 GR.getOrCreateSPIRVVectorType(I64Type, 2, MIRBuilder, false);
3843 SPIRVTypeInst Vec2ResType =
3844 GR.getOrCreateSPIRVVectorType(BaseType, 2, MIRBuilder, false);
3845
3846 std::vector<Register> PartialRegs;
3847
3848 unsigned CurrentComponent = 0;
3849 for (; CurrentComponent + 1 < ComponentCount; CurrentComponent += 2) {
3850 Register PopCountResult =
3851 MRI->createVirtualRegister(GR.getRegClass(I64x2Type));
3852
3853 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
3854 TII.get(SPIRV::OpVectorShuffle))
3855 .addDef(PopCountResult)
3856 .addUse(GR.getSPIRVTypeID(I64x2Type))
3857 .addUse(SrcReg)
3858 .addUse(SrcReg)
3859 .addImm(CurrentComponent)
3860 .addImm(CurrentComponent + 1);
3861
3862 MIB.constrainAllUses(TII, TRI, RBI);
3863
3864 Register SubVecReg =
3865 MRI->createVirtualRegister(GR.getRegClass(Vec2ResType));
3866
3867 if (!CallbackFunction(SubVecReg, Vec2ResType, I, PopCountResult, Opcode))
3868 return false;
3869
3870 PartialRegs.push_back(SubVecReg);
3871 }
3872 // On odd component counts we need to handle one more component
3873 if (CurrentComponent != ComponentCount) {
3874 bool ZeroAsNull = !STI.isShader();
3875 Register FinalElemReg = MRI->createVirtualRegister(GR.getRegClass(I64Type));
3876 Register ConstIntLastIdx = GR.getOrCreateConstInt(
3877 ComponentCount - 1, I, BaseType, TII, ZeroAsNull);
3878
3879 if (!selectOpWithSrcs(FinalElemReg, I64Type, I, {SrcReg, ConstIntLastIdx},
3880 SPIRV::OpVectorExtractDynamic))
3881 return false;
3882
3883 Register FinalElemResReg =
3884 MRI->createVirtualRegister(GR.getRegClass(BaseType));
3885
3886 if (!CallbackFunction(FinalElemResReg, BaseType, I, FinalElemReg, Opcode))
3887 return false;
3888
3889 PartialRegs.push_back(FinalElemResReg);
3890 }
3891 // Join all the resulting registers back into the return type in order
3892 // (ie i32x2, i32x2, i32x1 -> i32x5)
3893 return selectOpWithSrcs(ResVReg, ResType, I, PartialRegs,
3894 SPIRV::OpCompositeConstruct);
3895}
3896
3897bool SPIRVInstructionSelector::selectBitreverse64(Register ResVReg,
3898 SPIRVTypeInst ResType,
3899 MachineInstr &I,
3900 Register SrcReg) const {
3901 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
3902 if (ComponentCount > 2)
3903 return handle64BitOverflow(
3904 ResVReg, ResType, I, SrcReg, SPIRV::OpBitReverse,
3905 [this](Register R, SPIRVTypeInst T, MachineInstr &I, Register S,
3906 unsigned O) { return this->selectBitreverse64(R, T, I, S); });
3907
3908 MachineIRBuilder MIRBuilder(I);
3909
3910 SPIRVTypeInst I32Type = GR.getOrCreateSPIRVIntegerType(32, MIRBuilder);
3911 SPIRVTypeInst VecI32Type = GR.getOrCreateSPIRVVectorType(
3912 I32Type, 2 * ComponentCount, MIRBuilder, /*IsSigned=*/false);
3913
3914 // Converts 64 bit into and array of 32 bit, containing 2 elements.
3915 Register Vec32 = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
3916 if (!selectOpWithSrcs(Vec32, VecI32Type, I, {SrcReg}, SPIRV::OpBitcast))
3917 return false;
3918
3919 // Apply bitreverse on each 32 bit lane
3920 Register Reverse32 = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
3921 if (!selectBitreverseNative(Reverse32, VecI32Type, I, Vec32))
3922 return false;
3923
3924 // Reversing a 64-bit value = reverse each 32-bit half AND swap them,
3925 // so the old High word becomes lane 0 (low) and old Low becomes lane 1
3926 // (high).
3927 Register SwappedVec = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
3928 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
3929 TII.get(SPIRV::OpVectorShuffle))
3930 .addDef(SwappedVec)
3931 .addUse(GR.getSPIRVTypeID(VecI32Type))
3932 .addUse(Reverse32)
3933 .addUse(Reverse32);
3934 for (unsigned J = 0; J < ComponentCount; ++J) {
3935 MIB.addImm(2 * J + 1);
3936 MIB.addImm(2 * J);
3937 }
3938 MIB.constrainAllUses(TII, TRI, RBI);
3939
3940 // Groups 32 bit vector back to 64 bit scalar.
3941 return selectOpWithSrcs(ResVReg, ResType, I, {SwappedVec}, SPIRV::OpBitcast);
3942}
3943
3944bool SPIRVInstructionSelector::selectBitreverseNative(Register ResVReg,
3945 SPIRVTypeInst ResType,
3946 MachineInstr &I,
3947 Register Op) const {
3948 MachineBasicBlock &BB = *I.getParent();
3949 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpBitReverse))
3950 .addDef(ResVReg)
3951 .addUse(GR.getSPIRVTypeID(ResType))
3952 .addUse(Op)
3953 .constrainAllUses(TII, TRI, RBI);
3954 return true;
3955}
3956
3957bool SPIRVInstructionSelector::selectBitreverse(Register ResVReg,
3958 SPIRVTypeInst ResType,
3959 MachineInstr &I) const {
3960 Register OpReg = I.getOperand(1).getReg();
3961
3962 // TODO: Fix shader behavior in case of VK_KHR_maintenance9 extension is set
3963 if (STI.isShader()) {
3964 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
3965 switch (GR.getScalarOrVectorBitWidth(OpType)) {
3966 case 8:
3967 case 16:
3968 return selectBitreverse16(ResVReg, ResType, I, OpReg);
3969 case 32:
3970 return selectBitreverseNative(ResVReg, ResType, I, OpReg);
3971 case 64:
3972 return selectBitreverse64(ResVReg, ResType, I, OpReg);
3973 }
3974 return SPIRVInstructionSelector::diagnoseUnsupported(
3975 I, "G_BITREVERSE only support 16,32,64 bits.");
3976 }
3977
3978 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_bit_instructions))
3979 return selectBitreverseNative(ResVReg, ResType, I, OpReg);
3980
3981 // Expansion bitreverse using bit manipulation operations
3982 // Algo: https://graphics.stanford.edu/~seander/bithacks.html#ReverseParallel
3983 const unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
3984 // TODO: add support for any bit width and bitwidth more than 64.
3985 if (BitWidth > 64 || !isPowerOf2_32(BitWidth))
3986 return false;
3987
3988 const unsigned N = GR.getScalarOrVectorComponentCount(ResType);
3989
3990 unsigned AndOp = SPIRV::OpBitwiseAndS;
3991 unsigned OrOp = SPIRV::OpBitwiseOrS;
3992 unsigned ShlOp = SPIRV::OpShiftLeftLogicalS;
3993 unsigned ShrOp = SPIRV::OpShiftRightLogicalS;
3994 if (N > 1) {
3995 AndOp = SPIRV::OpBitwiseAndV;
3996 OrOp = SPIRV::OpBitwiseOrV;
3997 ShlOp = SPIRV::OpShiftLeftLogicalV;
3998 ShrOp = SPIRV::OpShiftRightLogicalV;
3999 }
4000
4001 // Helper, one swap per step: ((input>>shift)&mask)|((input&mask)<<shift),
4002 // RPN: input shift >> mask & input mask & shift << |
4003 auto SwapBits = [&](const Register Input, const uint64_t Mask,
4004 const unsigned Shift) -> Register {
4005 auto CreateConst = [&](const uint64_t Value) -> Register {
4006 if (N == 1)
4007 return GR.getOrCreateConstInt(
4008 Value, I, GR.retrieveScalarOrVectorIntType(ResType), TII);
4009 return GR.getOrCreateConstVector(Value, I, ResType, TII);
4010 };
4011
4012 Register MaskReg = CreateConst(Mask);
4013 Register ShiftReg = CreateConst(Shift);
4014 Register T1 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4015 Register T2 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4016 Register T3 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4017 Register T4 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4018 Register Result = MRI->createVirtualRegister(GR.getRegClass(ResType));
4019
4020 if (!selectOpWithSrcs(T1, ResType, I, {Input, ShiftReg}, ShrOp) ||
4021 !selectOpWithSrcs(T2, ResType, I, {T1, MaskReg}, AndOp) ||
4022 !selectOpWithSrcs(T3, ResType, I, {Input, MaskReg}, AndOp) ||
4023 !selectOpWithSrcs(T4, ResType, I, {T3, ShiftReg}, ShlOp) ||
4024 !selectOpWithSrcs(Result, ResType, I, {T2, T4}, OrOp))
4025 return Register();
4026
4027 return Result;
4028 };
4029
4030 unsigned Shift = BitWidth;
4031 Register Result = OpReg;
4032 uint64_t Mask = ~0ull;
4033 while ((Shift >>= 1) > 0) {
4034 Mask ^= (Mask << Shift);
4035 Result = SwapBits(Result, Mask, Shift);
4036 if (!Result.isValid())
4037 return false;
4038 }
4039
4040 return BuildCOPY(ResVReg, Result, I);
4041}
4042
4043bool SPIRVInstructionSelector::selectFreeze(Register ResVReg,
4044 SPIRVTypeInst ResType,
4045 MachineInstr &I) const {
4046 assert(I.getOperand(0).isReg() && I.getOperand(1).isReg() &&
4047 "G_FREEZE must define and use a register");
4048 Register OpReg = I.getOperand(1).getReg();
4049
4050 // With SPV_KHR_poison_freeze, lower `freeze` to OpFreezeKHR.
4051 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_poison_freeze)) {
4052 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpFreezeKHR))
4053 .addDef(ResVReg)
4054 .addUse(GR.getSPIRVTypeID(ResType))
4055 .addUse(OpReg)
4056 .constrainAllUses(TII, TRI, RBI);
4057 return true;
4058 }
4059
4060 // There is no way to implement `freeze` correctly without support on SPIR-V
4061 // standard side, but we may at least address a simple (static) case when
4062 // undef/poison value presence is obvious. The main benefit of even
4063 // incomplete `freeze` support is preventing of translation from crashing due
4064 // to lack of support on legalization and instruction selection steps.
4065 if (MachineInstr *Def = MRI->getVRegDef(OpReg)) {
4066 if (Def->getOpcode() == TargetOpcode::COPY)
4067 Def = MRI->getVRegDef(Def->getOperand(1).getReg());
4068 Register Reg;
4069 switch (Def->getOpcode()) {
4070 case SPIRV::ASSIGN_TYPE:
4071 if (MachineInstr *AssignToDef =
4072 MRI->getVRegDef(Def->getOperand(1).getReg())) {
4073 if (AssignToDef->getOpcode() == TargetOpcode::G_IMPLICIT_DEF)
4074 Reg = Def->getOperand(2).getReg();
4075 }
4076 break;
4077 case SPIRV::OpUndef:
4078 Reg = Def->getOperand(1).getReg();
4079 break;
4080 }
4081 unsigned DestOpCode;
4082 if (Reg.isValid()) {
4083 DestOpCode = SPIRV::OpConstantNull;
4084 LLVM_DEBUG(dbgs() << "SPV_KHR_poison_freeze is not enabled. freeze of a "
4085 "static undef/poison lowered to OpConstantNull\n");
4086 } else {
4087 DestOpCode = TargetOpcode::COPY;
4088 Reg = OpReg;
4089 LLVM_DEBUG(dbgs() << "SPV_KHR_poison_freeze is not enabled. freeze "
4090 "skipped, lowered as a copy of the operand\n");
4091 }
4092 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(DestOpCode))
4093 .addDef(I.getOperand(0).getReg())
4094 .addUse(Reg)
4095 .constrainAllUses(TII, TRI, RBI);
4096 return true;
4097 }
4098 return false;
4099}
4100
4101bool SPIRVInstructionSelector::selectBuildVector(Register ResVReg,
4102 SPIRVTypeInst ResType,
4103 MachineInstr &I) const {
4104 unsigned N = 0;
4105 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4106 N = GR.getScalarOrVectorComponentCount(ResType);
4107 else if (ResType->getOpcode() == SPIRV::OpTypeArray)
4108 N = getArrayComponentCount(MRI, ResType);
4109 else
4110 report_fatal_error("Cannot select G_BUILD_VECTOR with a non-vector result");
4111 if (I.getNumExplicitOperands() - I.getNumExplicitDefs() != N)
4112 report_fatal_error("G_BUILD_VECTOR and the result type are inconsistent");
4113
4114 // check if we may construct a constant vector
4115 bool IsConst = true;
4116 for (unsigned i = I.getNumExplicitDefs();
4117 i < I.getNumExplicitOperands() && IsConst; ++i)
4118 if (!isConstReg(MRI, I.getOperand(i).getReg()))
4119 IsConst = false;
4120
4121 if (!IsConst && N < 2)
4122 return diagnoseUnsupported(
4123 I, "There must be at least two constituent operands in a vector");
4124
4125 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
4126
4127 bool IsNullVector = IsConst && !STI.isShader();
4128 for (unsigned i = I.getNumExplicitDefs();
4129 i < I.getNumExplicitOperands() && IsNullVector; ++i) {
4130 MachineInstr *Def = getDef(I.getOperand(i), MRI);
4131 IsNullVector = Def && isNullOrNullSplat(*Def, *MRI);
4132 }
4133
4134 if (IsNullVector) {
4135 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
4136 .addDef(ResVReg)
4137 .addUse(GR.getSPIRVTypeID(ResType))
4138 .constrainAllUses(TII, TRI, RBI);
4139 return true;
4140 }
4141
4142 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4143 TII.get(IsConst ? SPIRV::OpConstantComposite
4144 : SPIRV::OpCompositeConstruct))
4145 .addDef(ResVReg)
4146 .addUse(GR.getSPIRVTypeID(ResType));
4147 for (unsigned i = I.getNumExplicitDefs(); i < I.getNumExplicitOperands(); ++i)
4148 MIB.addUse(I.getOperand(i).getReg());
4149 MIB.constrainAllUses(TII, TRI, RBI);
4150 return true;
4151}
4152
4153bool SPIRVInstructionSelector::selectSplatVector(Register ResVReg,
4154 SPIRVTypeInst ResType,
4155 MachineInstr &I) const {
4156 unsigned N = 0;
4157 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4158 N = GR.getScalarOrVectorComponentCount(ResType);
4159 else if (ResType->getOpcode() == SPIRV::OpTypeArray)
4160 N = getArrayComponentCount(MRI, ResType);
4161 else
4162 report_fatal_error("Cannot select G_SPLAT_VECTOR with a non-vector result");
4163
4164 unsigned OpIdx = I.getNumExplicitDefs();
4165 if (!I.getOperand(OpIdx).isReg())
4166 report_fatal_error("Unexpected argument in G_SPLAT_VECTOR");
4167
4168 // check if we may construct a constant vector
4169 Register OpReg = I.getOperand(OpIdx).getReg();
4170 bool IsConst = isConstReg(MRI, OpReg);
4171
4172 if (!IsConst && N < 2)
4173 return diagnoseUnsupported(
4174 I, "There must be at least two constituent operands in a vector");
4175
4176 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
4177 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4178 TII.get(IsConst ? SPIRV::OpConstantComposite
4179 : SPIRV::OpCompositeConstruct))
4180 .addDef(ResVReg)
4181 .addUse(GR.getSPIRVTypeID(ResType));
4182 for (unsigned i = 0; i < N; ++i)
4183 MIB.addUse(OpReg);
4184 MIB.constrainAllUses(TII, TRI, RBI);
4185 return true;
4186}
4187
4188bool SPIRVInstructionSelector::selectConcatVectors(Register ResVReg,
4189 SPIRVTypeInst ResType,
4190 MachineInstr &I) const {
4191 // Implement G_CONCAT_VECTORS using OpCompositeConstruct, which allows vector
4192 // constituents that share the result's component type to be
4193 // concatenated in operand order.
4194 if (ResType->getOpcode() != SPIRV::OpTypeVector)
4195 report_fatal_error(
4196 "Cannot select G_CONCAT_VECTORS with a non-vector result");
4197
4198 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4199 TII.get(SPIRV::OpCompositeConstruct))
4200 .addDef(ResVReg)
4201 .addUse(GR.getSPIRVTypeID(ResType));
4202 for (unsigned OpIdx = I.getNumExplicitDefs();
4203 OpIdx < I.getNumExplicitOperands(); ++OpIdx)
4204 MIB.addUse(I.getOperand(OpIdx).getReg());
4205 MIB.constrainAllUses(TII, TRI, RBI);
4206 return true;
4207}
4208
4209bool SPIRVInstructionSelector::selectDiscard(Register ResVReg,
4210 SPIRVTypeInst ResType,
4211 MachineInstr &I) const {
4212
4213 unsigned Opcode;
4214
4215 if (STI.canUseExtension(
4216 SPIRV::Extension::SPV_EXT_demote_to_helper_invocation) ||
4217 STI.isAtLeastSPIRVVer(llvm::VersionTuple(1, 6))) {
4218 Opcode = SPIRV::OpDemoteToHelperInvocation;
4219 } else {
4220 Opcode = SPIRV::OpKill;
4221 // OpKill must be the last operation of any basic block.
4222 if (MachineInstr *NextI = I.getNextNode()) {
4223 GR.invalidateMachineInstr(NextI);
4224 NextI->eraseFromParent();
4225 }
4226 }
4227
4228 MachineBasicBlock &BB = *I.getParent();
4229 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
4230 .constrainAllUses(TII, TRI, RBI);
4231 return true;
4232}
4233
4234bool SPIRVInstructionSelector::selectCmp(Register ResVReg,
4235 SPIRVTypeInst ResType, unsigned CmpOpc,
4236 MachineInstr &I) const {
4237 Register Cmp0 = I.getOperand(2).getReg();
4238 Register Cmp1 = I.getOperand(3).getReg();
4239 assert(GR.getSPIRVTypeForVReg(Cmp0)->getOpcode() ==
4240 GR.getSPIRVTypeForVReg(Cmp1)->getOpcode() &&
4241 "CMP operands should have the same type");
4242 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(CmpOpc))
4243 .addDef(ResVReg)
4244 .addUse(GR.getSPIRVTypeID(ResType))
4245 .addUse(Cmp0)
4246 .addUse(Cmp1)
4247 .setMIFlags(I.getFlags())
4248 .constrainAllUses(TII, TRI, RBI);
4249 return true;
4250}
4251
4252bool SPIRVInstructionSelector::selectICmp(Register ResVReg,
4253 SPIRVTypeInst ResType,
4254 MachineInstr &I) const {
4255 auto Pred = I.getOperand(1).getPredicate();
4256 unsigned CmpOpc;
4257
4258 Register CmpOperand = I.getOperand(2).getReg();
4259 if (GR.isScalarOfType(CmpOperand, SPIRV::OpTypePointer)) {
4260 CmpOpc = getPtrCmpOpcode(Pred);
4261 // OpPtrEqual/OpPtrNotEqual require both operands to share an identical
4262 // pointer type. If they are not OpBitcast is inserted.
4263 Register Op1 = I.getOperand(3).getReg();
4264 SPIRVTypeInst Ty0 = GR.getSPIRVTypeForVReg(CmpOperand);
4265 if (Ty0 != GR.getSPIRVTypeForVReg(Op1)) {
4266 Register NewOp1 = createVirtualRegister(Ty0, &GR, MRI, MRI->getMF());
4267 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpBitcast))
4268 .addDef(NewOp1)
4269 .addUse(GR.getSPIRVTypeID(Ty0))
4270 .addUse(Op1)
4271 .constrainAllUses(TII, TRI, RBI);
4272 I.getOperand(3).setReg(NewOp1);
4273 }
4274 } else if (GR.isScalarOrVectorOfType(CmpOperand, SPIRV::OpTypeBool))
4275 CmpOpc = getBoolCmpOpcode(Pred);
4276 else
4277 CmpOpc = getICmpOpcode(Pred);
4278 return selectCmp(ResVReg, ResType, CmpOpc, I);
4279}
4280
4281Register
4282SPIRVInstructionSelector::buildI32Constant(uint32_t Val, MachineInstr &I,
4283 SPIRVTypeInst ResType) const {
4284 Type *LLVMTy = IntegerType::get(GR.CurMF->getFunction().getContext(), 32);
4285 SPIRVTypeInst SpvI32Ty =
4286 ResType ? ResType : GR.getOrCreateSPIRVIntegerType(32, I, TII);
4287 // Find a constant in DT or build a new one.
4288 auto ConstInt = ConstantInt::get(LLVMTy, Val);
4289 Register NewReg = GR.find(ConstInt, GR.CurMF);
4290 if (!NewReg.isValid()) {
4291 NewReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
4292 MachineBasicBlock &BB = *I.getParent();
4293 MachineInstr *MI =
4294 Val == 0
4295 ? BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
4296 .addDef(NewReg)
4297 .addUse(GR.getSPIRVTypeID(SpvI32Ty))
4298 : BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantI))
4299 .addDef(NewReg)
4300 .addUse(GR.getSPIRVTypeID(SpvI32Ty))
4301 .addImm(APInt(32, Val).getZExtValue());
4302 constrainSelectedInstRegOperands(*MI, TII, TRI, RBI);
4303 GR.add(ConstInt, MI);
4304 }
4305 return NewReg;
4306}
4307
4308// Like buildI32Constant, but always inserts the constant definition in the
4309// entry block so it dominates all uses regardless of block ordering.
4310Register SPIRVInstructionSelector::buildI32ConstantInEntryBlock(
4311 uint32_t Val, MachineInstr &I, SPIRVTypeInst ResType) const {
4312 Type *LLVMTy = IntegerType::get(GR.CurMF->getFunction().getContext(), 32);
4313 SPIRVTypeInst SpvI32Ty =
4314 ResType ? ResType : GR.getOrCreateSPIRVIntegerType(32, I, TII);
4315 auto *ConstInt = ConstantInt::get(LLVMTy, Val);
4316 Register NewReg = GR.find(ConstInt, GR.CurMF);
4317 if (!NewReg.isValid()) {
4318 NewReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
4319 auto InsertIt = getOpVariableMBBIt(*I.getMF());
4320 MachineBasicBlock &EntryBB = *InsertIt->getParent();
4321 MachineInstr *MI = nullptr;
4322 Register TypeReg = GR.getSPIRVTypeID(SpvI32Ty);
4323 DebugLoc DbgLoc = I.getDebugLoc();
4324 if (Val == 0) {
4325 MI = BuildMI(EntryBB, InsertIt, DbgLoc, TII.get(SPIRV::OpConstantNull))
4326 .addDef(NewReg)
4327 .addUse(TypeReg);
4328 } else {
4329 uint64_t ImmVal = APInt(32, Val).getZExtValue();
4330 MI = BuildMI(EntryBB, InsertIt, DbgLoc, TII.get(SPIRV::OpConstantI))
4331 .addDef(NewReg)
4332 .addUse(TypeReg)
4333 .addImm(ImmVal);
4334 }
4335 constrainSelectedInstRegOperands(*MI, TII, TRI, RBI);
4336 GR.add(ConstInt, MI);
4337 }
4338 return NewReg;
4339}
4340
4341bool SPIRVInstructionSelector::selectFCmp(Register ResVReg,
4342 SPIRVTypeInst ResType,
4343 MachineInstr &I) const {
4344 unsigned CmpOp = getFCmpOpcode(I.getOperand(1).getPredicate());
4345 return selectCmp(ResVReg, ResType, CmpOp, I);
4346}
4347
4348bool SPIRVInstructionSelector::selectExp10(Register ResVReg,
4349 SPIRVTypeInst ResType,
4350 MachineInstr &I) const {
4351 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
4352 return selectExtInst(ResVReg, ResType, I, CL::exp10);
4353 }
4354
4355 if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
4356 /// There is no exp10 in GLSL. Use exp10(x) = exp2(x * log2(10)) instead
4357 /// log2(10) ~= 3.3219280948874l
4358
4359 if (ResType->getOpcode() != SPIRV::OpTypeVector &&
4360 ResType->getOpcode() != SPIRV::OpTypeFloat)
4361 return false;
4362
4363 MachineIRBuilder MIRBuilder(I);
4364
4365 SPIRVTypeInst SpirvScalarType = GR.getScalarOrVectorComponentType(ResType);
4366
4367 // Match the literal precision to the scalar type so the OpConstant
4368 // literal does not contain non-zero high-order bits that would fail
4369 // SPIR-V validation when the type is narrower than 32 bits (e.g. half).
4370 APFloat ConstVal(3.3219280948873623);
4371 bool LosesInfo;
4372 ConstVal.convert(
4373 getZeroFP(GR.getTypeForSPIRVType(SpirvScalarType)).getSemantics(),
4374 APFloat::rmNearestTiesToEven, &LosesInfo);
4375 Register ConstReg =
4376 GR.buildConstantFP(ConstVal, MIRBuilder, SpirvScalarType);
4377 Register ArgReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
4378 auto Opcode = ResType->getOpcode() == SPIRV::OpTypeVector
4379 ? SPIRV::OpVectorTimesScalar
4380 : SPIRV::OpFMulS;
4381
4382 if (!selectOpWithSrcs(ArgReg, ResType, I,
4383 {I.getOperand(1).getReg(), ConstReg}, Opcode))
4384 return false;
4385 if (!selectExtInst(ResVReg, ResType, I,
4386 {{SPIRV::InstructionSet::GLSL_std_450, GL::Exp2}}, false,
4387 false, {ArgReg}))
4388 return false;
4389
4390 return true;
4391 }
4392
4393 return false;
4394}
4395
4396Register SPIRVInstructionSelector::buildZerosVal(SPIRVTypeInst ResType,
4397 MachineInstr &I) const {
4398 // OpenCL uses nulls for Zero. In HLSL we don't use null constants.
4399 bool ZeroAsNull = !STI.isShader();
4400 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4401 return GR.getOrCreateConstVector(0UL, I, ResType, TII, ZeroAsNull);
4402 return GR.getOrCreateConstInt(0, I, ResType, TII, ZeroAsNull);
4403}
4404
4405bool SPIRVInstructionSelector::isScalarOrVectorIntConstantZero(
4406 Register Reg) const {
4407 SPIRVTypeInst Type = GR.getSPIRVTypeForVReg(Reg);
4408 if (!Type)
4409 return false;
4410 SPIRVTypeInst CompType = GR.getScalarOrVectorComponentType(Type);
4411 if (!CompType || CompType->getOpcode() != SPIRV::OpTypeInt)
4412 return false;
4413
4414 auto IsZero = [this](Register Reg) {
4415 MachineInstr *Def = getDefInstrMaybeConstant(Reg, MRI);
4416 if (!Def)
4417 return false;
4418
4419 if (Def->getOpcode() == SPIRV::OpConstantNull)
4420 return true;
4421
4422 if (Def->getOpcode() == TargetOpcode::G_CONSTANT ||
4423 Def->getOpcode() == SPIRV::OpConstantI)
4424 return getIConstVal(Reg, MRI) == 0;
4425
4426 return false;
4427 };
4428
4429 if (IsZero(Reg))
4430 return true;
4431
4432 MachineInstr *Def = MRI->getVRegDef(Reg);
4433 if (!Def)
4434 return false;
4435
4436 if (Def->getOpcode() == TargetOpcode::G_BUILD_VECTOR ||
4437 (Def->getOpcode() == TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS &&
4438 cast<GIntrinsic>(Def)->getIntrinsicID() ==
4439 Intrinsic::spv_const_composite)) {
4440 unsigned StartOp = Def->getOpcode() == TargetOpcode::G_BUILD_VECTOR ? 1 : 2;
4441 for (unsigned i = StartOp; i < Def->getNumOperands(); ++i) {
4442 if (!IsZero(Def->getOperand(i).getReg()))
4443 return false;
4444 }
4445 return true;
4446 }
4447
4448 return false;
4449}
4450
4451Register SPIRVInstructionSelector::buildZerosValF(SPIRVTypeInst ResType,
4452 MachineInstr &I) const {
4453 // OpenCL uses nulls for Zero. In HLSL we don't use null constants.
4454 bool ZeroAsNull = !STI.isShader();
4455 APFloat VZero = getZeroFP(GR.getTypeForSPIRVType(ResType));
4456 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4457 return GR.getOrCreateConstVector(VZero, I, ResType, TII, ZeroAsNull);
4458 return GR.getOrCreateConstFP(VZero, I, ResType, TII, ZeroAsNull);
4459}
4460
4461Register SPIRVInstructionSelector::buildOnesValF(SPIRVTypeInst ResType,
4462 MachineInstr &I) const {
4463 // OpenCL uses nulls for Zero. In HLSL we don't use null constants.
4464 bool ZeroAsNull = !STI.isShader();
4465 APFloat VOne = getOneFP(GR.getTypeForSPIRVType(ResType));
4466 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4467 return GR.getOrCreateConstVector(VOne, I, ResType, TII, ZeroAsNull);
4468 return GR.getOrCreateConstFP(VOne, I, ResType, TII, ZeroAsNull);
4469}
4470
4471Register SPIRVInstructionSelector::buildOnesVal(bool AllOnes,
4472 SPIRVTypeInst ResType,
4473 MachineInstr &I) const {
4474 unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
4475 APInt One =
4476 AllOnes ? APInt::getAllOnes(BitWidth) : APInt::getOneBitSet(BitWidth, 0);
4477 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4478 return GR.getOrCreateConstVector(One, I, ResType, TII);
4479 return GR.getOrCreateConstInt(One, I, ResType, TII);
4480}
4481
4482bool SPIRVInstructionSelector::selectSelect(Register ResVReg,
4483 SPIRVTypeInst ResType,
4484 MachineInstr &I) const {
4485 Register SelectFirstArg = I.getOperand(2).getReg();
4486 Register SelectSecondArg = I.getOperand(3).getReg();
4487 assert(ResType == GR.getSPIRVTypeForVReg(SelectFirstArg) &&
4488 ResType == GR.getSPIRVTypeForVReg(SelectSecondArg));
4489
4490 bool IsFloatTy =
4491 GR.isScalarOrVectorOfType(SelectFirstArg, SPIRV::OpTypeFloat);
4492 bool IsPtrTy =
4493 GR.isScalarOrVectorOfType(SelectFirstArg, SPIRV::OpTypePointer);
4494 bool IsVectorTy = GR.getSPIRVTypeForVReg(SelectFirstArg)->getOpcode() ==
4495 SPIRV::OpTypeVector;
4496
4497 bool IsScalarBool =
4498 GR.isScalarOfType(I.getOperand(1).getReg(), SPIRV::OpTypeBool);
4499 unsigned Opcode;
4500 if (IsVectorTy) {
4501 if (IsFloatTy) {
4502 Opcode = IsScalarBool ? SPIRV::OpSelectVFSCond : SPIRV::OpSelectVFVCond;
4503 } else if (IsPtrTy) {
4504 Opcode = IsScalarBool ? SPIRV::OpSelectVPSCond : SPIRV::OpSelectVPVCond;
4505 } else {
4506 Opcode = IsScalarBool ? SPIRV::OpSelectVISCond : SPIRV::OpSelectVIVCond;
4507 }
4508 } else {
4509 assert(IsScalarBool && "OpSelect with a scalar result requires a scalar "
4510 "boolean condition");
4511 if (IsFloatTy) {
4512 Opcode = SPIRV::OpSelectSFSCond;
4513 } else if (IsPtrTy) {
4514 Opcode = SPIRV::OpSelectSPSCond;
4515 } else {
4516 Opcode = SPIRV::OpSelectSISCond;
4517 }
4518 }
4519 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
4520 .addDef(ResVReg)
4521 .addUse(GR.getSPIRVTypeID(ResType))
4522 .addUse(I.getOperand(1).getReg())
4523 .addUse(SelectFirstArg)
4524 .addUse(SelectSecondArg)
4525 .constrainAllUses(TII, TRI, RBI);
4526 return true;
4527}
4528
4529// This function is used to extend a bool or a vector of bools into an integer
4530// or vector of integers.
4531bool SPIRVInstructionSelector::selectBoolToInt(Register ResVReg,
4532 SPIRVTypeInst ResType,
4533 Register BooleanVReg,
4534 MachineInstr &InsertAt,
4535 bool IsSigned) const {
4536 // To extend a bool, we need to use OpSelect between constants.
4537 Register ZeroReg = buildZerosVal(ResType, InsertAt);
4538 Register OneReg = buildOnesVal(IsSigned, ResType, InsertAt);
4539 bool IsScalarBool = GR.isScalarOfType(BooleanVReg, SPIRV::OpTypeBool);
4540 unsigned Opcode =
4541 IsScalarBool ? SPIRV::OpSelectSISCond : SPIRV::OpSelectVIVCond;
4542 BuildMI(*InsertAt.getParent(), InsertAt, InsertAt.getDebugLoc(),
4543 TII.get(Opcode))
4544 .addDef(ResVReg)
4545 .addUse(GR.getSPIRVTypeID(ResType))
4546 .addUse(BooleanVReg)
4547 .addUse(OneReg)
4548 .addUse(ZeroReg)
4549 .constrainAllUses(TII, TRI, RBI);
4550 return true;
4551}
4552
4553bool SPIRVInstructionSelector::selectIToF(Register ResVReg,
4554 SPIRVTypeInst ResType,
4555 MachineInstr &I, bool IsSigned,
4556 unsigned Opcode) const {
4557 Register SrcReg = I.getOperand(1).getReg();
4558 // We can convert bool value directly to float type without OpConvert*ToF,
4559 // however the translator generates OpSelect+OpConvert*ToF, so we do the same.
4560 if (GR.isScalarOrVectorOfType(I.getOperand(1).getReg(), SPIRV::OpTypeBool)) {
4561 unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
4562 SPIRVTypeInst TmpType = GR.getOrCreateSPIRVIntegerType(BitWidth, I, TII);
4563 if (ResType->getOpcode() == SPIRV::OpTypeVector) {
4564 const unsigned NumElts = GR.getScalarOrVectorComponentCount(ResType);
4565 TmpType = GR.getOrCreateSPIRVVectorType(TmpType, NumElts, I, TII);
4566 }
4567 SrcReg = createVirtualRegister(TmpType, &GR, MRI, MRI->getMF());
4568 selectBoolToInt(SrcReg, TmpType, I.getOperand(1).getReg(), I, false);
4569 }
4570 return selectOpWithSrcs(ResVReg, ResType, I, {SrcReg}, Opcode);
4571}
4572
4573bool SPIRVInstructionSelector::selectExt(Register ResVReg,
4574 SPIRVTypeInst ResType, MachineInstr &I,
4575 bool IsSigned) const {
4576 Register SrcReg = I.getOperand(1).getReg();
4577 if (GR.isScalarOrVectorOfType(SrcReg, SPIRV::OpTypeBool))
4578 return selectBoolToInt(ResVReg, ResType, I.getOperand(1).getReg(), I,
4579 IsSigned);
4580
4581 SPIRVTypeInst SrcType = GR.getSPIRVTypeForVReg(SrcReg);
4582 if (ResType == SrcType)
4583 return BuildCOPY(ResVReg, SrcReg, I);
4584
4585 unsigned Opcode = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
4586 return selectUnOp(ResVReg, ResType, I, Opcode);
4587}
4588
4589bool SPIRVInstructionSelector::selectSUCmp(Register ResVReg,
4590 SPIRVTypeInst ResType,
4591 MachineInstr &I,
4592 bool IsSigned) const {
4593 MachineIRBuilder MIRBuilder(I);
4594 MachineRegisterInfo *MRI = MIRBuilder.getMRI();
4595 MachineBasicBlock &BB = *I.getParent();
4596 // Ensure we have bool.
4597 SPIRVTypeInst BoolType = GR.getOrCreateSPIRVBoolType(I, TII);
4598 unsigned N = GR.getScalarOrVectorComponentCount(ResType);
4599 if (N > 1)
4600 BoolType = GR.getOrCreateSPIRVVectorType(BoolType, N, I, TII);
4601 Register BoolTypeReg = GR.getSPIRVTypeID(BoolType);
4602 // Build less-than-equal and less-than.
4603 Register IsLessEqReg =
4604 createVirtualRegister(BoolType, &GR, MRI, MIRBuilder.getMF());
4605 BuildMI(BB, I, I.getDebugLoc(),
4606 TII.get(IsSigned ? SPIRV::OpSLessThanEqual : SPIRV::OpULessThanEqual))
4607 .addDef(IsLessEqReg)
4608 .addUse(BoolTypeReg)
4609 .addUse(I.getOperand(1).getReg())
4610 .addUse(I.getOperand(2).getReg())
4611 .constrainAllUses(TII, TRI, RBI);
4612 Register IsLessReg =
4613 createVirtualRegister(BoolType, &GR, MRI, MIRBuilder.getMF());
4614 BuildMI(BB, I, I.getDebugLoc(),
4615 TII.get(IsSigned ? SPIRV::OpSLessThan : SPIRV::OpULessThan))
4616 .addDef(IsLessReg)
4617 .addUse(BoolTypeReg)
4618 .addUse(I.getOperand(1).getReg())
4619 .addUse(I.getOperand(2).getReg())
4620 .constrainAllUses(TII, TRI, RBI);
4621 // Build selects.
4622 Register ResTypeReg = GR.getSPIRVTypeID(ResType);
4623 Register NegOneOrZeroReg =
4624 MRI->createVirtualRegister(GR.getRegClass(ResType));
4625 MRI->setType(NegOneOrZeroReg, LLT::scalar(64));
4626 GR.assignSPIRVTypeToVReg(ResType, NegOneOrZeroReg, MIRBuilder.getMF());
4627 unsigned SelectOpcode =
4628 N > 1 ? SPIRV::OpSelectVIVCond : SPIRV::OpSelectSISCond;
4629 BuildMI(BB, I, I.getDebugLoc(), TII.get(SelectOpcode))
4630 .addDef(NegOneOrZeroReg)
4631 .addUse(ResTypeReg)
4632 .addUse(IsLessReg)
4633 .addUse(buildOnesVal(true, ResType, I)) // -1
4634 .addUse(buildZerosVal(ResType, I))
4635 .constrainAllUses(TII, TRI, RBI);
4636 BuildMI(BB, I, I.getDebugLoc(), TII.get(SelectOpcode))
4637 .addDef(ResVReg)
4638 .addUse(ResTypeReg)
4639 .addUse(IsLessEqReg)
4640 .addUse(NegOneOrZeroReg) // -1 or 0
4641 .addUse(buildOnesVal(false, ResType, I))
4642 .constrainAllUses(TII, TRI, RBI);
4643 return true;
4644}
4645
4646bool SPIRVInstructionSelector::selectIntToBool(Register IntReg,
4647 Register ResVReg,
4648 MachineInstr &I,
4649 SPIRVTypeInst IntTy,
4650 SPIRVTypeInst BoolTy) const {
4651 // To truncate to a bool, we use OpBitwiseAnd 1 and OpINotEqual to zero.
4652 Register BitIntReg = createVirtualRegister(IntTy, &GR, MRI, MRI->getMF());
4653 bool IsVectorTy = IntTy->getOpcode() == SPIRV::OpTypeVector;
4654 unsigned Opcode = IsVectorTy ? SPIRV::OpBitwiseAndV : SPIRV::OpBitwiseAndS;
4655 Register Zero = buildZerosVal(IntTy, I);
4656 Register One = buildOnesVal(false, IntTy, I);
4657 MachineBasicBlock &BB = *I.getParent();
4658 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
4659 .addDef(BitIntReg)
4660 .addUse(GR.getSPIRVTypeID(IntTy))
4661 .addUse(IntReg)
4662 .addUse(One)
4663 .constrainAllUses(TII, TRI, RBI);
4664 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpINotEqual))
4665 .addDef(ResVReg)
4666 .addUse(GR.getSPIRVTypeID(BoolTy))
4667 .addUse(BitIntReg)
4668 .addUse(Zero)
4669 .constrainAllUses(TII, TRI, RBI);
4670 return true;
4671}
4672
4673bool SPIRVInstructionSelector::selectTrunc(Register ResVReg,
4674 SPIRVTypeInst ResType,
4675 MachineInstr &I) const {
4676 Register IntReg = I.getOperand(1).getReg();
4677 const SPIRVTypeInst ArgType = GR.getSPIRVTypeForVReg(IntReg);
4678 if (GR.isScalarOrVectorOfType(ResVReg, SPIRV::OpTypeBool))
4679 return selectIntToBool(IntReg, ResVReg, I, ArgType, ResType);
4680 if (ArgType == ResType)
4681 return BuildCOPY(ResVReg, IntReg, I);
4682 bool IsSigned = GR.isScalarOrVectorSigned(ResType);
4683 unsigned Opcode = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
4684 return selectUnOp(ResVReg, ResType, I, Opcode);
4685}
4686
4687bool SPIRVInstructionSelector::selectConst(Register ResVReg,
4688 SPIRVTypeInst ResType,
4689 MachineInstr &I) const {
4690 unsigned Opcode = I.getOpcode();
4691 unsigned TpOpcode = ResType->getOpcode();
4692 Register Reg;
4693 if (TpOpcode == SPIRV::OpTypePointer || TpOpcode == SPIRV::OpTypeEvent) {
4694 assert(Opcode == TargetOpcode::G_CONSTANT &&
4695 I.getOperand(1).getCImm()->isZero());
4696 MachineBasicBlock &DepMBB = I.getMF()->front();
4697 MachineIRBuilder MIRBuilder(DepMBB, DepMBB.getFirstNonPHI());
4698 Reg = GR.getOrCreateConstNullPtr(MIRBuilder, ResType);
4699 } else if (Opcode == TargetOpcode::G_FCONSTANT) {
4700 Reg = GR.getOrCreateConstFP(I.getOperand(1).getFPImm()->getValue(), I,
4701 ResType, TII, !STI.isShader());
4702 } else {
4703 Reg = GR.getOrCreateConstInt(I.getOperand(1).getCImm()->getValue(), I,
4704 ResType, TII, !STI.isShader());
4705 }
4706 return Reg == ResVReg ? true : BuildCOPY(ResVReg, Reg, I);
4707}
4708
4709bool SPIRVInstructionSelector::selectOpUndef(Register ResVReg,
4710 SPIRVTypeInst ResType,
4711 MachineInstr &I) const {
4712 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
4713 .addDef(ResVReg)
4714 .addUse(GR.getSPIRVTypeID(ResType))
4715 .constrainAllUses(TII, TRI, RBI);
4716 return true;
4717}
4718
4719bool SPIRVInstructionSelector::selectInsertVal(Register ResVReg,
4720 SPIRVTypeInst ResType,
4721 MachineInstr &I) const {
4722 MachineBasicBlock &BB = *I.getParent();
4723 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeInsert))
4724 .addDef(ResVReg)
4725 .addUse(GR.getSPIRVTypeID(ResType))
4726 // object to insert
4727 .addUse(I.getOperand(3).getReg())
4728 // composite to insert into
4729 .addUse(I.getOperand(2).getReg());
4730 for (unsigned i = 4; i < I.getNumOperands(); i++)
4731 MIB.addImm(foldImm(I.getOperand(i), MRI));
4732 MIB.constrainAllUses(TII, TRI, RBI);
4733 return true;
4734}
4735
4736bool SPIRVInstructionSelector::selectExtractVal(Register ResVReg,
4737 SPIRVTypeInst ResType,
4738 MachineInstr &I) const {
4739 Type *MaybeResTy = nullptr;
4740 StringRef ResName;
4741 if (GR.findValueAttrs(&I, MaybeResTy, ResName) &&
4742 MaybeResTy != GR.getTypeForSPIRVType(ResType)) {
4743 assert((!MaybeResTy || MaybeResTy->isAggregateType()) &&
4744 "Expected aggregate type for extractv instruction");
4745 ResType = GR.getOrCreateSPIRVType(MaybeResTy, I,
4746 SPIRV::AccessQualifier::ReadWrite, false);
4747 GR.assignSPIRVTypeToVReg(ResType, ResVReg, *I.getMF());
4748 }
4749 MachineBasicBlock &BB = *I.getParent();
4750 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
4751 .addDef(ResVReg)
4752 .addUse(GR.getSPIRVTypeID(ResType))
4753 .addUse(I.getOperand(2).getReg());
4754 for (unsigned i = 3; i < I.getNumOperands(); i++)
4755 MIB.addImm(foldImm(I.getOperand(i), MRI));
4756 MIB.constrainAllUses(TII, TRI, RBI);
4757 return true;
4758}
4759
4760bool SPIRVInstructionSelector::selectInsertElt(Register ResVReg,
4761 SPIRVTypeInst ResType,
4762 MachineInstr &I) const {
4763 if (getImm(I.getOperand(4), MRI))
4764 return selectInsertVal(ResVReg, ResType, I);
4765 MachineBasicBlock &BB = *I.getParent();
4766 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorInsertDynamic))
4767 .addDef(ResVReg)
4768 .addUse(GR.getSPIRVTypeID(ResType))
4769 .addUse(I.getOperand(2).getReg())
4770 .addUse(I.getOperand(3).getReg())
4771 .addUse(I.getOperand(4).getReg())
4772 .constrainAllUses(TII, TRI, RBI);
4773 return true;
4774}
4775
4776bool SPIRVInstructionSelector::selectExtractElt(Register ResVReg,
4777 SPIRVTypeInst ResType,
4778 MachineInstr &I) const {
4779 if (getImm(I.getOperand(3), MRI))
4780 return selectExtractVal(ResVReg, ResType, I);
4781 MachineBasicBlock &BB = *I.getParent();
4782 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorExtractDynamic))
4783 .addDef(ResVReg)
4784 .addUse(GR.getSPIRVTypeID(ResType))
4785 .addUse(I.getOperand(2).getReg())
4786 .addUse(I.getOperand(3).getReg())
4787 .constrainAllUses(TII, TRI, RBI);
4788 return true;
4789}
4790
4791bool SPIRVInstructionSelector::selectGEP(Register ResVReg,
4792 SPIRVTypeInst ResType,
4793 MachineInstr &I) const {
4794 const bool IsGEPInBounds = I.getOperand(2).getImm();
4795
4796 // OpAccessChain could be used for OpenCL, but the SPIRV-LLVM Translator only
4797 // relies on PtrAccessChain, so we'll try not to deviate. For Vulkan however,
4798 // we have to use Op[InBounds]AccessChain.
4799 const unsigned Opcode = STI.isLogicalSPIRV()
4800 ? (IsGEPInBounds ? SPIRV::OpInBoundsAccessChain
4801 : SPIRV::OpAccessChain)
4802 : (IsGEPInBounds ? SPIRV::OpInBoundsPtrAccessChain
4803 : SPIRV::OpPtrAccessChain);
4804
4805 auto Res = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
4806 .addDef(ResVReg)
4807 .addUse(GR.getSPIRVTypeID(ResType))
4808 // Object to get a pointer to.
4809 .addUse(I.getOperand(3).getReg());
4810 assert(
4811 (Opcode == SPIRV::OpPtrAccessChain ||
4812 Opcode == SPIRV::OpInBoundsPtrAccessChain ||
4813 (getImm(I.getOperand(4), MRI) && foldImm(I.getOperand(4), MRI) == 0)) &&
4814 "Cannot translate GEP to OpAccessChain. First index must be 0.");
4815
4816 // Adding indices.
4817 const unsigned StartingIndex =
4818 (Opcode == SPIRV::OpAccessChain || Opcode == SPIRV::OpInBoundsAccessChain)
4819 ? 5
4820 : 4;
4821 for (unsigned i = StartingIndex; i < I.getNumExplicitOperands(); ++i)
4822 Res.addUse(I.getOperand(i).getReg());
4823 Res.constrainAllUses(TII, TRI, RBI);
4824 return true;
4825}
4826
4827// Maybe wrap a value into OpSpecConstantOp
4828bool SPIRVInstructionSelector::wrapIntoSpecConstantOp(
4829 MachineInstr &I, SmallVector<Register> &CompositeArgs) const {
4830 unsigned Lim = I.getNumExplicitOperands();
4831 for (unsigned i = I.getNumExplicitDefs() + 1; i < Lim; ++i) {
4832 Register OpReg = I.getOperand(i).getReg();
4833 MachineInstr *OpDefine = MRI->getVRegDef(OpReg);
4834 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
4835 if (!OpDefine || !OpType || isConstReg(MRI, OpDefine) ||
4836 OpDefine->getOpcode() == TargetOpcode::G_ADDRSPACE_CAST ||
4837 OpDefine->getOpcode() == TargetOpcode::G_INTTOPTR ||
4838 GR.isAggregateType(OpType)) {
4839 // The case of G_ADDRSPACE_CAST inside spv_const_composite() is processed
4840 // by selectAddrSpaceCast(), and G_INTTOPTR is processed by selectUnOp()
4841 CompositeArgs.push_back(OpReg);
4842 continue;
4843 }
4844 MachineFunction *MF = I.getMF();
4845 Register WrapReg = GR.find(OpDefine, MF);
4846 if (WrapReg.isValid()) {
4847 CompositeArgs.push_back(WrapReg);
4848 continue;
4849 }
4850 // Create a new register for the wrapper
4851 WrapReg = MRI->createVirtualRegister(GR.getRegClass(OpType));
4852 CompositeArgs.push_back(WrapReg);
4853 // Decorate the wrapper register and generate a new instruction
4854 MRI->setType(WrapReg, LLT::pointer(0, 64));
4855 GR.assignSPIRVTypeToVReg(OpType, WrapReg, *MF);
4856 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4857 TII.get(SPIRV::OpSpecConstantOp))
4858 .addDef(WrapReg)
4859 .addUse(GR.getSPIRVTypeID(OpType))
4860 .addImm(static_cast<uint32_t>(SPIRV::Opcode::Bitcast))
4861 .addUse(OpReg);
4862 GR.add(OpDefine, MIB);
4863 MIB.constrainAllUses(TII, TRI, RBI);
4864 }
4865 return true;
4866}
4867
4868bool SPIRVInstructionSelector::selectDerivativeInst(
4869 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
4870 const unsigned DPdOpCode) const {
4871 // TODO: This should check specifically for Fragment Execution Model, but STI
4872 // doesn't provide that information yet. See #167562
4873 if (!errorIfInstrOutsideShader(I))
4874 return false;
4875
4876 // If the arg/result types are half then we need to wrap the instr in
4877 // conversions to float
4878 // This case occurs because a half arg/result is legal in HLSL but not spirv.
4879 Register SrcReg = I.getOperand(2).getReg();
4880 SPIRVTypeInst SrcType = GR.getSPIRVTypeForVReg(SrcReg);
4881 unsigned BitWidth = std::min(GR.getScalarOrVectorBitWidth(SrcType),
4882 GR.getScalarOrVectorBitWidth(ResType));
4883 if (BitWidth == 32)
4884 return BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(DPdOpCode))
4885 .addDef(ResVReg)
4886 .addUse(GR.getSPIRVTypeID(ResType))
4887 .addUse(I.getOperand(2).getReg());
4888
4889 MachineIRBuilder MIRBuilder(I);
4890 unsigned componentCount = GR.getScalarOrVectorComponentCount(SrcType);
4891 SPIRVTypeInst F32ConvertTy = GR.getOrCreateSPIRVFloatType(32, I, TII);
4892 if (componentCount != 1)
4893 F32ConvertTy = GR.getOrCreateSPIRVVectorType(F32ConvertTy, componentCount,
4894 MIRBuilder, false);
4895
4896 const TargetRegisterClass *RegClass = GR.getRegClass(SrcType);
4897 Register ConvertToVReg = MRI->createVirtualRegister(RegClass);
4898 Register DpdOpVReg = MRI->createVirtualRegister(RegClass);
4899
4900 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpFConvert))
4901 .addDef(ConvertToVReg)
4902 .addUse(GR.getSPIRVTypeID(F32ConvertTy))
4903 .addUse(SrcReg)
4904 .constrainAllUses(TII, TRI, RBI);
4905 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(DPdOpCode))
4906 .addDef(DpdOpVReg)
4907 .addUse(GR.getSPIRVTypeID(F32ConvertTy))
4908 .addUse(ConvertToVReg)
4909 .constrainAllUses(TII, TRI, RBI);
4910 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpFConvert))
4911 .addDef(ResVReg)
4912 .addUse(GR.getSPIRVTypeID(ResType))
4913 .addUse(DpdOpVReg)
4914 .constrainAllUses(TII, TRI, RBI);
4915 return true;
4916}
4917
4918bool SPIRVInstructionSelector::selectIntrinsic(Register ResVReg,
4919 SPIRVTypeInst ResType,
4920 MachineInstr &I) const {
4921 MachineBasicBlock &BB = *I.getParent();
4922 Intrinsic::ID IID = cast<GIntrinsic>(I).getIntrinsicID();
4923 switch (IID) {
4924 case Intrinsic::spv_load:
4925 return selectLoad(ResVReg, ResType, I);
4926 case Intrinsic::spv_atomic_load:
4927 return selectAtomicLoad(ResVReg, ResType, I);
4928 case Intrinsic::spv_store:
4929 return selectStore(I);
4930 case Intrinsic::spv_atomic_store:
4931 return selectAtomicStore(I);
4932 case Intrinsic::spv_extractv:
4933 return selectExtractVal(ResVReg, ResType, I);
4934 case Intrinsic::spv_insertv:
4935 return selectInsertVal(ResVReg, ResType, I);
4936 case Intrinsic::spv_extractelt:
4937 return selectExtractElt(ResVReg, ResType, I);
4938 case Intrinsic::spv_insertelt:
4939 return selectInsertElt(ResVReg, ResType, I);
4940 case Intrinsic::spv_gep:
4941 return selectGEP(ResVReg, ResType, I);
4942 case Intrinsic::spv_bitcast: {
4943 Register OpReg = I.getOperand(2).getReg();
4944 SPIRVTypeInst OpType =
4945 OpReg.isValid() ? GR.getSPIRVTypeForVReg(OpReg) : nullptr;
4946 if (!GR.isBitcastCompatible(ResType, OpType))
4947 report_fatal_error("incompatible result and operand types in a bitcast");
4948 return selectOpWithSrcs(ResVReg, ResType, I, {OpReg}, SPIRV::OpBitcast);
4949 }
4950 case Intrinsic::spv_unref_global:
4951 case Intrinsic::spv_init_global: {
4952 MachineInstr *MI = MRI->getVRegDef(I.getOperand(1).getReg());
4953 MachineInstr *Init = I.getNumExplicitOperands() > 2
4954 ? MRI->getVRegDef(I.getOperand(2).getReg())
4955 : nullptr;
4956 assert(MI);
4957 Register GVarVReg = MI->getOperand(0).getReg();
4958 if (!selectGlobalValue(GVarVReg, *MI, Init))
4959 return false;
4960 // We violate SSA form by inserting OpVariable and still having a gMIR
4961 // instruction %vreg = G_GLOBAL_VALUE @gvar. We need to fix this by erasing
4962 // the duplicated definition.
4963 if (MI->getOpcode() == TargetOpcode::G_GLOBAL_VALUE) {
4964 GR.invalidateMachineInstr(MI);
4965 MI->eraseFromParent();
4966 }
4967 return true;
4968 }
4969 case Intrinsic::spv_undef: {
4970 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
4971 .addDef(ResVReg)
4972 .addUse(GR.getSPIRVTypeID(ResType));
4973 MIB.constrainAllUses(TII, TRI, RBI);
4974 return true;
4975 }
4976 case Intrinsic::spv_poison:
4977 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpPoisonKHR))
4978 .addDef(ResVReg)
4979 .addUse(GR.getSPIRVTypeID(ResType))
4980 .constrainAllUses(TII, TRI, RBI);
4981 return true;
4982 case Intrinsic::spv_freeze:
4983 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpFreezeKHR))
4984 .addDef(ResVReg)
4985 .addUse(GR.getSPIRVTypeID(ResType))
4986 .addUse(I.getOperand(2).getReg())
4987 .constrainAllUses(TII, TRI, RBI);
4988 return true;
4989 case Intrinsic::spv_named_boolean_spec_constant: {
4990 auto Opcode = I.getOperand(3).getImm() ? SPIRV::OpSpecConstantTrue
4991 : SPIRV::OpSpecConstantFalse;
4992
4993 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
4994 .addDef(I.getOperand(0).getReg())
4995 .addUse(GR.getSPIRVTypeID(ResType));
4996 MIB.constrainAllUses(TII, TRI, RBI);
4997 unsigned SpecId = I.getOperand(2).getImm();
4998 buildOpDecorate(I.getOperand(0).getReg(), *++MIB->getIterator(), TII,
4999 SPIRV::Decoration::SpecId, {SpecId});
5000
5001 return true;
5002 }
5003 case Intrinsic::spv_const_composite: {
5004 // If no values are attached, the composite is null constant.
5005 bool IsNull = I.getNumExplicitDefs() + 1 == I.getNumExplicitOperands();
5006 SmallVector<Register> CompositeArgs;
5007 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
5008
5009 // skip type MD node we already used when generated assign.type for this
5010 if (!IsNull) {
5011 if (!wrapIntoSpecConstantOp(I, CompositeArgs))
5012 return false;
5013 std::function<bool(Register)> HasSpecConstOperand =
5014 [&](Register Reg) -> bool {
5015 MachineInstr *Def = MRI->getVRegDef(Reg);
5016 if (!Def)
5017 return false;
5018 if (!isConstReg(MRI, Def))
5019 return true;
5020 // Recurse into not-yet-selected spv_const_composite intrinsics
5021 // to detect transitive spec constant operands.
5022 if (isSpvIntrinsic(*Def, Intrinsic::spv_const_composite)) {
5023 for (unsigned J = Def->getNumExplicitDefs() + 1;
5024 J < Def->getNumExplicitOperands(); ++J) {
5025 if (Def->getOperand(J).isReg() &&
5026 HasSpecConstOperand(Def->getOperand(J).getReg()))
5027 return true;
5028 }
5029 }
5030 return false;
5031 };
5032 bool HasSpecConst = llvm::any_of(CompositeArgs, HasSpecConstOperand);
5033 unsigned CompositeOpc = HasSpecConst ? SPIRV::OpSpecConstantComposite
5034 : SPIRV::OpConstantComposite;
5035 unsigned ContinuedOpc = HasSpecConst
5036 ? SPIRV::OpSpecConstantCompositeContinuedINTEL
5037 : SPIRV::OpConstantCompositeContinuedINTEL;
5038 MachineIRBuilder MIR(I);
5039 SmallVector<MachineInstr *, 4> Instructions = createContinuedInstructions(
5040 MIR, CompositeOpc, 3, ContinuedOpc, CompositeArgs, ResVReg,
5041 GR.getSPIRVTypeID(ResType));
5042 for (auto *Instr : Instructions) {
5043 Instr->setDebugLoc(I.getDebugLoc());
5044 constrainSelectedInstRegOperands(*Instr, TII, TRI, RBI);
5045 }
5046 return true;
5047 } else {
5048 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
5049 .addDef(ResVReg)
5050 .addUse(GR.getSPIRVTypeID(ResType));
5051 MIB.constrainAllUses(TII, TRI, RBI);
5052 return true;
5053 }
5054 }
5055 case Intrinsic::spv_assign_name: {
5056 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpName));
5057 MIB.addUse(I.getOperand(I.getNumExplicitDefs() + 1).getReg());
5058 for (unsigned i = I.getNumExplicitDefs() + 2;
5059 i < I.getNumExplicitOperands(); ++i) {
5060 MIB.addImm(I.getOperand(i).getImm());
5061 }
5062 MIB.constrainAllUses(TII, TRI, RBI);
5063 return true;
5064 }
5065 case Intrinsic::spv_switch: {
5066 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSwitch));
5067 for (unsigned i = 1; i < I.getNumExplicitOperands(); ++i) {
5068 if (I.getOperand(i).isReg())
5069 MIB.addReg(I.getOperand(i).getReg());
5070 else if (I.getOperand(i).isCImm())
5071 addNumImm(I.getOperand(i).getCImm()->getValue(), MIB);
5072 else if (I.getOperand(i).isMBB())
5073 MIB.addMBB(I.getOperand(i).getMBB());
5074 else
5075 llvm_unreachable("Unexpected OpSwitch operand");
5076 }
5077 MIB.constrainAllUses(TII, TRI, RBI);
5078 return true;
5079 }
5080 case Intrinsic::spv_loop_merge: {
5081 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpLoopMerge));
5082 for (unsigned i = 1; i < I.getNumExplicitOperands(); ++i) {
5083 if (I.getOperand(i).isMBB())
5084 MIB.addMBB(I.getOperand(i).getMBB());
5085 else
5086 MIB.addImm(foldImm(I.getOperand(i), MRI));
5087 }
5088 MIB.constrainAllUses(TII, TRI, RBI);
5089 return true;
5090 }
5091 case Intrinsic::spv_loop_control_intel: {
5092 auto MIB =
5093 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpLoopControlINTEL));
5094 for (unsigned J = 1; J < I.getNumExplicitOperands(); ++J)
5095 MIB.addImm(foldImm(I.getOperand(J), MRI));
5096 MIB.constrainAllUses(TII, TRI, RBI);
5097 return true;
5098 }
5099 case Intrinsic::spv_selection_merge: {
5100 auto MIB =
5101 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSelectionMerge));
5102 assert(I.getOperand(1).isMBB() &&
5103 "operand 1 to spv_selection_merge must be a basic block");
5104 MIB.addMBB(I.getOperand(1).getMBB());
5105 MIB.addImm(getSelectionOperandForImm(I.getOperand(2).getImm()));
5106 MIB.constrainAllUses(TII, TRI, RBI);
5107 return true;
5108 }
5109 case Intrinsic::spv_cmpxchg:
5110 return selectAtomicCmpXchg(ResVReg, ResType, I);
5111 case Intrinsic::spv_unreachable:
5112 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUnreachable))
5113 .constrainAllUses(TII, TRI, RBI);
5114 return true;
5115 case Intrinsic::spv_abort:
5116 return selectAbort(I);
5117 case Intrinsic::spv_alloca:
5118 return selectFrameIndex(ResVReg, ResType, I);
5119 case Intrinsic::spv_alloca_array:
5120 return selectAllocaArray(ResVReg, ResType, I);
5121 case Intrinsic::spv_assume:
5122 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_expect_assume)) {
5123 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpAssumeTrueKHR))
5124 .addUse(I.getOperand(1).getReg())
5125 .constrainAllUses(TII, TRI, RBI);
5126 return true;
5127 }
5128 break;
5129 case Intrinsic::spv_expect:
5130 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_expect_assume)) {
5131 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExpectKHR))
5132 .addDef(ResVReg)
5133 .addUse(GR.getSPIRVTypeID(ResType))
5134 .addUse(I.getOperand(2).getReg())
5135 .addUse(I.getOperand(3).getReg())
5136 .constrainAllUses(TII, TRI, RBI);
5137 return true;
5138 }
5139 break;
5140 case Intrinsic::arithmetic_fence:
5141 if (STI.canUseExtension(SPIRV::Extension::SPV_EXT_arithmetic_fence)) {
5142 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpArithmeticFenceEXT))
5143 .addDef(ResVReg)
5144 .addUse(GR.getSPIRVTypeID(ResType))
5145 .addUse(I.getOperand(2).getReg())
5146 .constrainAllUses(TII, TRI, RBI);
5147 return true;
5148 } else
5149 return BuildCOPY(ResVReg, I.getOperand(2).getReg(), I);
5150 break;
5151 case Intrinsic::spv_thread_id:
5152 // The HLSL SV_DispatchThreadID semantic is lowered to llvm.spv.thread.id
5153 // intrinsic in LLVM IR for SPIR-V backend.
5154 //
5155 // In SPIR-V backend, llvm.spv.thread.id is now correctly translated to a
5156 // `GlobalInvocationId` builtin variable
5157 return loadVec3BuiltinInputID(SPIRV::BuiltIn::GlobalInvocationId, ResVReg,
5158 ResType, I);
5159 case Intrinsic::spv_thread_id_in_group:
5160 // The HLSL SV_GroupThreadId semantic is lowered to
5161 // llvm.spv.thread.id.in.group intrinsic in LLVM IR for SPIR-V backend.
5162 //
5163 // In SPIR-V backend, llvm.spv.thread.id.in.group is now correctly
5164 // translated to a `LocalInvocationId` builtin variable
5165 return loadVec3BuiltinInputID(SPIRV::BuiltIn::LocalInvocationId, ResVReg,
5166 ResType, I);
5167 case Intrinsic::spv_group_id:
5168 // The HLSL SV_GroupId semantic is lowered to
5169 // llvm.spv.group.id intrinsic in LLVM IR for SPIR-V backend.
5170 //
5171 // In SPIR-V backend, llvm.spv.group.id is now translated to a `WorkgroupId`
5172 // builtin variable
5173 return loadVec3BuiltinInputID(SPIRV::BuiltIn::WorkgroupId, ResVReg, ResType,
5174 I);
5175 case Intrinsic::spv_flattened_thread_id_in_group:
5176 // The HLSL SV_GroupIndex semantic is lowered to
5177 // llvm.spv.flattened.thread.id.in.group() intrinsic in LLVM IR for SPIR-V
5178 // backend.
5179 //
5180 // In SPIR-V backend, llvm.spv.flattened.thread.id.in.group is translated to
5181 // a `LocalInvocationIndex` builtin variable
5182 return loadBuiltinInputID(SPIRV::BuiltIn::LocalInvocationIndex, ResVReg,
5183 ResType, I);
5184 case Intrinsic::spv_workgroup_size:
5185 return loadVec3BuiltinInputID(SPIRV::BuiltIn::WorkgroupSize, ResVReg,
5186 ResType, I);
5187 case Intrinsic::spv_global_size:
5188 return loadVec3BuiltinInputID(SPIRV::BuiltIn::GlobalSize, ResVReg, ResType,
5189 I);
5190 case Intrinsic::spv_global_offset:
5191 return loadVec3BuiltinInputID(SPIRV::BuiltIn::GlobalOffset, ResVReg,
5192 ResType, I);
5193 case Intrinsic::spv_num_workgroups:
5194 return loadVec3BuiltinInputID(SPIRV::BuiltIn::NumWorkgroups, ResVReg,
5195 ResType, I);
5196 case Intrinsic::spv_subgroup_size:
5197 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupSize, ResVReg, ResType,
5198 I);
5199 case Intrinsic::spv_num_subgroups:
5200 return loadBuiltinInputID(SPIRV::BuiltIn::NumSubgroups, ResVReg, ResType,
5201 I);
5202 case Intrinsic::spv_subgroup_id:
5203 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupId, ResVReg, ResType, I);
5204 case Intrinsic::spv_subgroup_local_invocation_id:
5205 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupLocalInvocationId,
5206 ResVReg, ResType, I);
5207 case Intrinsic::spv_subgroup_max_size:
5208 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupMaxSize, ResVReg, ResType,
5209 I);
5210 case Intrinsic::spv_fdot:
5211 return selectFloatDot(ResVReg, ResType, I);
5212 case Intrinsic::spv_udot:
5213 case Intrinsic::spv_sdot:
5214 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_integer_dot_product) ||
5215 STI.isAtLeastSPIRVVer(VersionTuple(1, 6)))
5216 return selectIntegerDot(ResVReg, ResType, I,
5217 /*Signed=*/IID == Intrinsic::spv_sdot);
5218 return selectIntegerDotExpansion(ResVReg, ResType, I);
5219 case Intrinsic::spv_dot4add_i8packed:
5220 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_integer_dot_product) ||
5221 STI.isAtLeastSPIRVVer(VersionTuple(1, 6)))
5222 return selectDot4AddPacked<true>(ResVReg, ResType, I);
5223 return selectDot4AddPackedExpansion<true>(ResVReg, ResType, I);
5224 case Intrinsic::spv_dot4add_u8packed:
5225 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_integer_dot_product) ||
5226 STI.isAtLeastSPIRVVer(VersionTuple(1, 6)))
5227 return selectDot4AddPacked<false>(ResVReg, ResType, I);
5228 return selectDot4AddPackedExpansion<false>(ResVReg, ResType, I);
5229 case Intrinsic::spv_all:
5230 return selectAll(ResVReg, ResType, I);
5231 case Intrinsic::spv_any:
5232 return selectAny(ResVReg, ResType, I);
5233 case Intrinsic::spv_cross:
5234 return selectExtInst(ResVReg, ResType, I, CL::cross, GL::Cross);
5235 case Intrinsic::spv_distance:
5236 return selectExtInst(ResVReg, ResType, I, CL::distance, GL::Distance);
5237 case Intrinsic::spv_lerp:
5238 return selectExtInst(ResVReg, ResType, I, CL::mix, GL::FMix);
5239 case Intrinsic::spv_length:
5240 return selectExtInst(ResVReg, ResType, I, CL::length, GL::Length);
5241 case Intrinsic::spv_degrees:
5242 return selectExtInst(ResVReg, ResType, I, CL::degrees, GL::Degrees);
5243 case Intrinsic::spv_faceforward:
5244 return selectExtInst(ResVReg, ResType, I, GL::FaceForward);
5245 case Intrinsic::spv_frac:
5246 return selectExtInst(ResVReg, ResType, I, CL::fract, GL::Fract);
5247 case Intrinsic::spv_isinf:
5248 return selectOpIsInf(ResVReg, ResType, I);
5249 case Intrinsic::spv_isnan:
5250 return selectOpIsNan(ResVReg, ResType, I);
5251 case Intrinsic::spv_isfinite:
5252 return selectOpIsFinite(ResVReg, ResType, I);
5253 case Intrinsic::spv_isnormal:
5254 return selectOpIsNormal(ResVReg, ResType, I);
5255 case Intrinsic::spv_normalize:
5256 return selectExtInst(ResVReg, ResType, I, CL::normalize, GL::Normalize);
5257 case Intrinsic::spv_refract:
5258 return selectExtInst(ResVReg, ResType, I, GL::Refract);
5259 case Intrinsic::spv_reflect:
5260 return selectExtInst(ResVReg, ResType, I, GL::Reflect);
5261 case Intrinsic::spv_rsqrt:
5262 return selectExtInst(ResVReg, ResType, I, CL::rsqrt, GL::InverseSqrt);
5263 case Intrinsic::spv_sign:
5264 return selectSign(ResVReg, ResType, I);
5265 case Intrinsic::spv_smoothstep:
5266 return selectExtInst(ResVReg, ResType, I, CL::smoothstep, GL::SmoothStep);
5267 case Intrinsic::spv_firstbituhigh: // There is no CL equivalent of FindUMsb
5268 return selectFirstBitHigh(ResVReg, ResType, I, /*IsSigned=*/false);
5269 case Intrinsic::spv_firstbitshigh: // There is no CL equivalent of FindSMsb
5270 return selectFirstBitHigh(ResVReg, ResType, I, /*IsSigned=*/true);
5271 case Intrinsic::spv_firstbitlow: // There is no CL equivlent of FindILsb
5272 return selectFirstBitLow(ResVReg, ResType, I);
5273 case Intrinsic::spv_all_memory_barrier:
5274 return selectBarrierInst(I, SPIRV::Scope::Device,
5275 SPIRV::MemorySemantics::UniformMemory |
5276 SPIRV::MemorySemantics::ImageMemory |
5277 SPIRV::MemorySemantics::WorkgroupMemory,
5278 /*WithGroupSync*/ false);
5279 case Intrinsic::spv_all_memory_barrier_with_group_sync:
5280 return selectBarrierInst(I, SPIRV::Scope::Device,
5281 SPIRV::MemorySemantics::UniformMemory |
5282 SPIRV::MemorySemantics::ImageMemory |
5283 SPIRV::MemorySemantics::WorkgroupMemory,
5284 /*WithGroupSync*/ true);
5285 case Intrinsic::spv_device_memory_barrier:
5286 return selectBarrierInst(I, SPIRV::Scope::Device,
5287 SPIRV::MemorySemantics::UniformMemory |
5288 SPIRV::MemorySemantics::ImageMemory,
5289 /*WithGroupSync*/ false);
5290 case Intrinsic::spv_device_memory_barrier_with_group_sync:
5291 return selectBarrierInst(I, SPIRV::Scope::Device,
5292 SPIRV::MemorySemantics::UniformMemory |
5293 SPIRV::MemorySemantics::ImageMemory,
5294 /*WithGroupSync*/ true);
5295 case Intrinsic::spv_group_memory_barrier:
5296 return selectBarrierInst(I, SPIRV::Scope::Workgroup,
5297 SPIRV::MemorySemantics::WorkgroupMemory,
5298 /*WithGroupSync*/ false);
5299 case Intrinsic::spv_group_memory_barrier_with_group_sync:
5300 return selectBarrierInst(I, SPIRV::Scope::Workgroup,
5301 SPIRV::MemorySemantics::WorkgroupMemory,
5302 /*WithGroupSync*/ true);
5303 case Intrinsic::spv_generic_cast_to_ptr_explicit: {
5304 Register PtrReg = I.getOperand(I.getNumExplicitDefs() + 1).getReg();
5305 SPIRV::StorageClass::StorageClass ResSC =
5306 GR.getPointerStorageClass(ResType);
5307 if (!isGenericCastablePtr(ResSC))
5308 return diagnoseUnsupported(I, "The target storage class is not castable "
5309 "from the Generic storage class");
5310 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpGenericCastToPtrExplicit))
5311 .addDef(ResVReg)
5312 .addUse(GR.getSPIRVTypeID(ResType))
5313 .addUse(PtrReg)
5314 .addImm(ResSC)
5315 .constrainAllUses(TII, TRI, RBI);
5316 return true;
5317 }
5318 case Intrinsic::spv_lifetime_start:
5319 case Intrinsic::spv_lifetime_end: {
5320 unsigned Op = IID == Intrinsic::spv_lifetime_start ? SPIRV::OpLifetimeStart
5321 : SPIRV::OpLifetimeStop;
5322 int64_t Size = I.getOperand(I.getNumExplicitDefs() + 1).getImm();
5323 Register PtrReg = I.getOperand(I.getNumExplicitDefs() + 2).getReg();
5324 if (Size == -1)
5325 Size = 0;
5326 BuildMI(BB, I, I.getDebugLoc(), TII.get(Op))
5327 .addUse(PtrReg)
5328 .addImm(Size)
5329 .constrainAllUses(TII, TRI, RBI);
5330 return true;
5331 }
5332 case Intrinsic::spv_saturate:
5333 return selectSaturate(ResVReg, ResType, I);
5334 case Intrinsic::spv_nclamp:
5335 return selectExtInst(ResVReg, ResType, I, CL::fclamp, GL::NClamp);
5336 case Intrinsic::spv_uclamp:
5337 return selectExtInst(ResVReg, ResType, I, CL::u_clamp, GL::UClamp);
5338 case Intrinsic::spv_sclamp:
5339 return selectExtInst(ResVReg, ResType, I, CL::s_clamp, GL::SClamp);
5340 case Intrinsic::spv_subgroup_prefix_bit_count:
5341 return selectWavePrefixBitCount(ResVReg, ResType, I);
5342 case Intrinsic::spv_wave_active_countbits:
5343 return selectWaveActiveCountBits(ResVReg, ResType, I);
5344 case Intrinsic::spv_wave_all_equal:
5345 return selectWaveActiveAllEqual(ResVReg, ResType, I);
5346 case Intrinsic::spv_wave_all:
5347 return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformAll);
5348 case Intrinsic::spv_wave_any:
5349 return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformAny);
5350 case Intrinsic::spv_subgroup_ballot:
5351 return selectWaveOpInst(ResVReg, ResType, I,
5352 SPIRV::OpGroupNonUniformBallot);
5353 case Intrinsic::spv_wave_is_first_lane:
5354 return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformElect);
5355 case Intrinsic::spv_wave_reduce_or:
5356 return selectWaveReduceOp(ResVReg, ResType, I,
5357 SPIRV::OpGroupNonUniformBitwiseOr);
5358 case Intrinsic::spv_wave_reduce_xor:
5359 return selectWaveReduceOp(ResVReg, ResType, I,
5360 SPIRV::OpGroupNonUniformBitwiseXor);
5361 case Intrinsic::spv_wave_reduce_and:
5362 return selectWaveReduceOp(ResVReg, ResType, I,
5363 SPIRV::OpGroupNonUniformBitwiseAnd);
5364 case Intrinsic::spv_interlocked_add:
5365 return selectInterlockedAdd(ResVReg, ResType, I);
5366 case Intrinsic::spv_wave_reduce_umax:
5367 return selectWaveReduceMax(ResVReg, ResType, I, /*IsUnsigned*/ true);
5368 case Intrinsic::spv_wave_reduce_max:
5369 return selectWaveReduceMax(ResVReg, ResType, I, /*IsUnsigned*/ false);
5370 case Intrinsic::spv_wave_reduce_umin:
5371 return selectWaveReduceMin(ResVReg, ResType, I, /*IsUnsigned*/ true);
5372 case Intrinsic::spv_wave_reduce_min:
5373 return selectWaveReduceMin(ResVReg, ResType, I, /*IsUnsigned*/ false);
5374 case Intrinsic::spv_wave_reduce_sum:
5375 return selectWaveReduceSum(ResVReg, ResType, I);
5376 case Intrinsic::spv_wave_product:
5377 return selectWaveReduceProduct(ResVReg, ResType, I);
5378 case Intrinsic::spv_wave_readlane:
5379 return selectWaveOpInst(ResVReg, ResType, I,
5380 SPIRV::OpGroupNonUniformShuffle);
5381 case Intrinsic::spv_wave_prefix_sum:
5382 return selectWaveExclusiveScanSum(ResVReg, ResType, I);
5383 case Intrinsic::spv_wave_prefix_product:
5384 return selectWaveExclusiveScanProduct(ResVReg, ResType, I);
5385 case Intrinsic::spv_quad_read_across_x: {
5386 return selectQuadSwap(ResVReg, ResType, I, /*Direction*/ 0);
5387 }
5388 case Intrinsic::spv_quad_read_across_y: {
5389 return selectQuadSwap(ResVReg, ResType, I, /*Direction*/ 1);
5390 }
5391 case Intrinsic::spv_step:
5392 return selectExtInst(ResVReg, ResType, I, CL::step, GL::Step);
5393 case Intrinsic::spv_radians:
5394 return selectExtInst(ResVReg, ResType, I, CL::radians, GL::Radians);
5395 // Discard intrinsics which we do not expect to actually represent code after
5396 // lowering or intrinsics which are not implemented but should not crash when
5397 // found in a customer's LLVM IR input.
5398 case Intrinsic::instrprof_increment:
5399 case Intrinsic::instrprof_increment_step:
5400 case Intrinsic::instrprof_value_profile:
5401 break;
5402 // Discard internal intrinsics.
5403 case Intrinsic::spv_value_md:
5404 break;
5405 case Intrinsic::spv_resource_handlefrombinding: {
5406 return selectHandleFromBinding(ResVReg, ResType, I);
5407 }
5408 case Intrinsic::spv_resource_counterhandlefrombinding:
5409 return selectCounterHandleFromBinding(ResVReg, ResType, I);
5410 case Intrinsic::spv_resource_updatecounter:
5411 return selectUpdateCounter(ResVReg, ResType, I);
5412 case Intrinsic::spv_resource_store_typedbuffer: {
5413 return selectImageWriteIntrinsic(I);
5414 }
5415 case Intrinsic::spv_resource_load_typedbuffer: {
5416 return selectReadImageIntrinsic(ResVReg, ResType, I);
5417 }
5418 case Intrinsic::spv_resource_load_level: {
5419 return selectLoadLevelIntrinsic(ResVReg, ResType, I);
5420 }
5421 case Intrinsic::spv_resource_getdimensions_x:
5422 case Intrinsic::spv_resource_getdimensions_xy:
5423 case Intrinsic::spv_resource_getdimensions_xyz: {
5424 return selectGetDimensionsIntrinsic(ResVReg, ResType, I);
5425 }
5426 case Intrinsic::spv_resource_getdimensions_levels_x:
5427 case Intrinsic::spv_resource_getdimensions_levels_xy:
5428 case Intrinsic::spv_resource_getdimensions_levels_xyz: {
5429 return selectGetDimensionsLevelsIntrinsic(ResVReg, ResType, I);
5430 }
5431 case Intrinsic::spv_resource_getdimensions_ms_xy:
5432 case Intrinsic::spv_resource_getdimensions_ms_xyz: {
5433 return selectGetDimensionsMSIntrinsic(ResVReg, ResType, I);
5434 }
5435 case Intrinsic::spv_resource_calculate_lod:
5436 case Intrinsic::spv_resource_calculate_lod_unclamped:
5437 return selectCalculateLodIntrinsic(ResVReg, ResType, I);
5438 case Intrinsic::spv_resource_sample:
5439 case Intrinsic::spv_resource_sample_clamp:
5440 return selectSampleBasicIntrinsic(ResVReg, ResType, I);
5441 case Intrinsic::spv_resource_samplebias:
5442 case Intrinsic::spv_resource_samplebias_clamp:
5443 return selectSampleBiasIntrinsic(ResVReg, ResType, I);
5444 case Intrinsic::spv_resource_samplegrad:
5445 case Intrinsic::spv_resource_samplegrad_clamp:
5446 return selectSampleGradIntrinsic(ResVReg, ResType, I);
5447 case Intrinsic::spv_resource_samplelevel:
5448 return selectSampleLevelIntrinsic(ResVReg, ResType, I);
5449 case Intrinsic::spv_resource_samplecmp:
5450 case Intrinsic::spv_resource_samplecmp_clamp:
5451 return selectSampleCmpIntrinsic(ResVReg, ResType, I);
5452 case Intrinsic::spv_resource_samplecmplevelzero:
5453 return selectSampleCmpLevelZeroIntrinsic(ResVReg, ResType, I);
5454 case Intrinsic::spv_resource_gather:
5455 case Intrinsic::spv_resource_gather_cmp:
5456 return selectGatherIntrinsic(ResVReg, ResType, I);
5457 case Intrinsic::spv_resource_getbasepointer:
5458 case Intrinsic::spv_resource_getpointer: {
5459 return selectResourceGetPointer(ResVReg, ResType, I);
5460 }
5461 case Intrinsic::spv_pushconstant_getpointer: {
5462 return selectPushConstantGetPointer(ResVReg, ResType, I);
5463 }
5464 case Intrinsic::spv_discard: {
5465 return selectDiscard(ResVReg, ResType, I);
5466 }
5467 case Intrinsic::spv_resource_nonuniformindex: {
5468 return selectResourceNonUniformIndex(ResVReg, ResType, I);
5469 }
5470 case Intrinsic::spv_unpackhalf2x16: {
5471 return selectExtInst(ResVReg, ResType, I, GL::UnpackHalf2x16);
5472 }
5473 case Intrinsic::spv_packhalf2x16: {
5474 return selectExtInst(ResVReg, ResType, I, GL::PackHalf2x16);
5475 }
5476 case Intrinsic::spv_ddx:
5477 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdx);
5478 case Intrinsic::spv_ddy:
5479 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdy);
5480 case Intrinsic::spv_ddx_coarse:
5481 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdxCoarse);
5482 case Intrinsic::spv_ddy_coarse:
5483 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdyCoarse);
5484 case Intrinsic::spv_ddx_fine:
5485 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdxFine);
5486 case Intrinsic::spv_ddy_fine:
5487 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdyFine);
5488 case Intrinsic::spv_fwidth:
5489 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpFwidth);
5490 case Intrinsic::spv_masked_gather:
5491 if (STI.canUseExtension(SPIRV::Extension::SPV_INTEL_masked_gather_scatter))
5492 return selectMaskedGather(ResVReg, ResType, I);
5493 return diagnoseUnsupported(
5494 I, "llvm.masked.gather requires SPV_INTEL_masked_gather_scatter");
5495 case Intrinsic::spv_masked_scatter:
5496 if (STI.canUseExtension(SPIRV::Extension::SPV_INTEL_masked_gather_scatter))
5497 return selectMaskedScatter(I);
5498 return diagnoseUnsupported(
5499 I, "llvm.masked.scatter requires SPV_INTEL_masked_gather_scatter");
5500 case Intrinsic::returnaddress:
5501 case Intrinsic::frameaddress: {
5502 // SPIR-V does not have a stack or return address. Lower to null.
5503 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
5504 .addDef(ResVReg)
5505 .addUse(GR.getSPIRVTypeID(ResType));
5506 MIB.constrainAllUses(TII, TRI, RBI);
5507 return true;
5508 }
5509 default:
5510 return diagnoseUnsupported(I, "intrinsic selection not implemented.");
5511 }
5512 return true;
5513}
5514
5515bool SPIRVInstructionSelector::selectHandleFromBinding(Register &ResVReg,
5516 SPIRVTypeInst ResType,
5517 MachineInstr &I) const {
5518 // The images need to be loaded in the same basic block as their use. We defer
5519 // loading the image to the intrinsic that uses it.
5520 if (ResType->getOpcode() == SPIRV::OpTypeImage)
5521 return true;
5522
5523 return loadHandleBeforePosition(ResVReg, GR.getSPIRVTypeForVReg(ResVReg),
5524 *cast<GIntrinsic>(&I), I);
5525}
5526
5527bool SPIRVInstructionSelector::selectCounterHandleFromBinding(
5528 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5529 auto &Intr = cast<GIntrinsic>(I);
5530 assert(Intr.getIntrinsicID() ==
5531 Intrinsic::spv_resource_counterhandlefrombinding);
5532
5533 // Extract information from the intrinsic call.
5534 Register MainHandleReg = Intr.getOperand(2).getReg();
5535 auto *MainHandleDef = cast<GIntrinsic>(getVRegDef(*MRI, MainHandleReg));
5536 assert(MainHandleDef->getIntrinsicID() ==
5537 Intrinsic::spv_resource_handlefrombinding);
5538
5539 uint32_t Set = getIConstVal(Intr.getOperand(4).getReg(), MRI);
5540 uint32_t Binding = getIConstVal(Intr.getOperand(3).getReg(), MRI);
5541 uint32_t ArraySize = getIConstVal(MainHandleDef->getOperand(4).getReg(), MRI);
5542 Register IndexReg = MainHandleDef->getOperand(5).getReg();
5543 std::string CounterName =
5544 getStringValueFromReg(MainHandleDef->getOperand(6).getReg(), *MRI) +
5545 ".counter";
5546
5547 // Create the counter variable.
5548 MachineIRBuilder MIRBuilder(I);
5549 Register CounterVarReg =
5550 buildPointerToResource(SPIRVTypeInst(GR.getPointeeType(ResType)),
5551 GR.getPointerStorageClass(ResType), Set, Binding,
5552 ArraySize, IndexReg, CounterName, MIRBuilder);
5553
5554 return BuildCOPY(ResVReg, CounterVarReg, I);
5555}
5556
5557bool SPIRVInstructionSelector::selectUpdateCounter(Register &ResVReg,
5558 SPIRVTypeInst ResType,
5559 MachineInstr &I) const {
5560 auto &Intr = cast<GIntrinsic>(I);
5561 assert(Intr.getIntrinsicID() == Intrinsic::spv_resource_updatecounter);
5562
5563 Register CounterHandleReg = Intr.getOperand(2).getReg();
5564 Register IncrReg = Intr.getOperand(3).getReg();
5565
5566 // The counter handle is a pointer to the counter variable (which is a struct
5567 // containing an i32). We need to get a pointer to that i32 member to do the
5568 // atomic operation.
5569#ifndef NDEBUG
5570 SPIRVTypeInst CounterVarType = GR.getSPIRVTypeForVReg(CounterHandleReg);
5571 SPIRVTypeInst CounterVarPointeeType = GR.getPointeeType(CounterVarType);
5572 assert(CounterVarPointeeType &&
5573 CounterVarPointeeType->getOpcode() == SPIRV::OpTypeStruct &&
5574 "Counter variable must be a struct");
5575 assert(GR.getPointerStorageClass(CounterVarType) ==
5576 SPIRV::StorageClass::StorageBuffer &&
5577 "Counter variable must be in the storage buffer storage class");
5578 assert(CounterVarPointeeType->getNumOperands() == 2 &&
5579 "Counter variable must have exactly 1 member in the struct");
5580 const SPIRVTypeInst MemberType =
5581 GR.getSPIRVTypeForVReg(CounterVarPointeeType->getOperand(1).getReg());
5582 assert(MemberType->getOpcode() == SPIRV::OpTypeInt &&
5583 "Counter variable struct must have a single i32 member");
5584#endif
5585
5586 // The struct has a single i32 member.
5587 MachineIRBuilder MIRBuilder(I);
5588 const Type *LLVMIntType =
5589 Type::getInt32Ty(I.getMF()->getFunction().getContext());
5590
5591 SPIRVTypeInst IntPtrType = GR.getOrCreateSPIRVPointerType(
5592 LLVMIntType, MIRBuilder, SPIRV::StorageClass::StorageBuffer);
5593
5594 Register Zero = buildI32Constant(0, I);
5595
5596 Register PtrToCounter =
5597 MRI->createVirtualRegister(GR.getRegClass(IntPtrType));
5598 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAccessChain))
5599 .addDef(PtrToCounter)
5600 .addUse(GR.getSPIRVTypeID(IntPtrType))
5601 .addUse(CounterHandleReg)
5602 .addUse(Zero)
5603 .constrainAllUses(TII, TRI, RBI);
5604
5605 // For UAV/SSBO counters, the scope is Device. The counter variable is not
5606 // used as a flag. So the memory semantics can be None.
5607 Register Scope = buildI32Constant(SPIRV::Scope::Device, I);
5608 Register Semantics = buildI32Constant(SPIRV::MemorySemantics::None, I);
5609
5610 int64_t IncrVal = getIConstValSext(IncrReg, MRI);
5611 Register Incr = buildI32Constant(static_cast<uint32_t>(IncrVal), I);
5612
5613 Register AtomicRes = MRI->createVirtualRegister(GR.getRegClass(ResType));
5614 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAtomicIAdd))
5615 .addDef(AtomicRes)
5616 .addUse(GR.getSPIRVTypeID(ResType))
5617 .addUse(PtrToCounter)
5618 .addUse(Scope)
5619 .addUse(Semantics)
5620 .addUse(Incr)
5621 .constrainAllUses(TII, TRI, RBI);
5622 if (IncrVal >= 0) {
5623 return BuildCOPY(ResVReg, AtomicRes, I);
5624 }
5625
5626 // In HLSL, IncrementCounter returns the value *before* the increment, while
5627 // DecrementCounter returns the value *after* the decrement. Both are lowered
5628 // to the same atomic intrinsic which returns the value *before* the
5629 // operation. So for decrements (negative IncrVal), we must subtract the
5630 // increment value from the result to get the post-decrement value.
5631 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
5632 .addDef(ResVReg)
5633 .addUse(GR.getSPIRVTypeID(ResType))
5634 .addUse(AtomicRes)
5635 .addUse(Incr)
5636 .constrainAllUses(TII, TRI, RBI);
5637 return true;
5638}
5639bool SPIRVInstructionSelector::selectReadImageIntrinsic(Register &ResVReg,
5640 SPIRVTypeInst ResType,
5641 MachineInstr &I) const {
5642
5643 // If the load of the image is in a different basic block, then
5644 // this will generate invalid code. A proper solution is to move
5645 // the OpLoad from selectHandleFromBinding here. However, to do
5646 // that we will need to change the return type of the intrinsic.
5647 // We will do that when we can, but for now trying to move forward with other
5648 // issues.
5649 Register ImageReg = I.getOperand(2).getReg();
5650 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5651 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5652 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5653 *ImageDef, I)) {
5654 return false;
5655 }
5656
5657 Register IdxReg = I.getOperand(3).getReg();
5658 DebugLoc Loc = I.getDebugLoc();
5659 MachineInstr &Pos = I;
5660
5661 return generateImageReadOrFetch(ResVReg, ResType, NewImageReg, IdxReg, Loc,
5662 Pos);
5663}
5664
5665bool SPIRVInstructionSelector::generateSampleImage(
5666 Register ResVReg, SPIRVTypeInst ResType, Register ImageReg,
5667 Register SamplerReg, Register CoordinateReg, const ImageOperands &ImOps,
5668 DebugLoc Loc, MachineInstr &Pos) const {
5669 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5670 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5671 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5672 *ImageDef, Pos)) {
5673 return false;
5674 }
5675
5676 auto *SamplerDef = cast<GIntrinsic>(getVRegDef(*MRI, SamplerReg));
5677 Register NewSamplerReg =
5678 MRI->createVirtualRegister(MRI->getRegClass(SamplerReg));
5679 if (!loadHandleBeforePosition(NewSamplerReg,
5680 GR.getSPIRVTypeForVReg(SamplerReg), *SamplerDef,
5681 Pos)) {
5682 return false;
5683 }
5684
5685 MachineIRBuilder MIRBuilder(Pos);
5686 SPIRVTypeInst SampledImageType = GR.getOrCreateOpTypeSampledImage(
5687 GR.getSPIRVTypeForVReg(ImageReg), MIRBuilder);
5688 Register SampledImageReg =
5689 MRI->createVirtualRegister(GR.getRegClass(SampledImageType));
5690
5691 BuildMI(*Pos.getParent(), Pos, Loc, TII.get(SPIRV::OpSampledImage))
5692 .addDef(SampledImageReg)
5693 .addUse(GR.getSPIRVTypeID(SampledImageType))
5694 .addUse(NewImageReg)
5695 .addUse(NewSamplerReg)
5696 .constrainAllUses(TII, TRI, RBI);
5697
5698 bool IsExplicitLod = ImOps.GradX.has_value() || ImOps.GradY.has_value() ||
5699 ImOps.Lod.has_value();
5700 unsigned Opcode = IsExplicitLod ? SPIRV::OpImageSampleExplicitLod
5701 : SPIRV::OpImageSampleImplicitLod;
5702 if (ImOps.Compare)
5703 Opcode = IsExplicitLod ? SPIRV::OpImageSampleDrefExplicitLod
5704 : SPIRV::OpImageSampleDrefImplicitLod;
5705
5706 auto MIB = BuildMI(*Pos.getParent(), Pos, Loc, TII.get(Opcode))
5707 .addDef(ResVReg)
5708 .addUse(GR.getSPIRVTypeID(ResType))
5709 .addUse(SampledImageReg)
5710 .addUse(CoordinateReg);
5711
5712 if (ImOps.Compare)
5713 MIB.addUse(*ImOps.Compare);
5714
5715 uint32_t ImageOperands = 0;
5716 if (ImOps.Bias)
5717 ImageOperands |= SPIRV::ImageOperand::Bias;
5718 if (ImOps.Lod)
5719 ImageOperands |= SPIRV::ImageOperand::Lod;
5720 if (ImOps.GradX && ImOps.GradY)
5721 ImageOperands |= SPIRV::ImageOperand::Grad;
5722 if (ImOps.Offset && !isScalarOrVectorIntConstantZero(*ImOps.Offset)) {
5723 if (isConstReg(MRI, *ImOps.Offset))
5724 ImageOperands |= SPIRV::ImageOperand::ConstOffset;
5725 else {
5726 Pos.emitGenericError(
5727 "Non-constant offsets are not supported in sample instructions.");
5728 return false;
5729 }
5730 }
5731 if (ImOps.MinLod)
5732 ImageOperands |= SPIRV::ImageOperand::MinLod;
5733
5734 if (ImageOperands != 0) {
5735 MIB.addImm(ImageOperands);
5736 if (ImageOperands & SPIRV::ImageOperand::Bias)
5737 MIB.addUse(*ImOps.Bias);
5738 if (ImageOperands & SPIRV::ImageOperand::Lod)
5739 MIB.addUse(*ImOps.Lod);
5740 if (ImageOperands & SPIRV::ImageOperand::Grad) {
5741 MIB.addUse(*ImOps.GradX);
5742 MIB.addUse(*ImOps.GradY);
5743 }
5744 if (ImageOperands &
5745 (SPIRV::ImageOperand::ConstOffset | SPIRV::ImageOperand::Offset))
5746 MIB.addUse(*ImOps.Offset);
5747 if (ImageOperands & SPIRV::ImageOperand::MinLod)
5748 MIB.addUse(*ImOps.MinLod);
5749 }
5750
5751 MIB.constrainAllUses(TII, TRI, RBI);
5752 return true;
5753}
5754
5755bool SPIRVInstructionSelector::selectImageQuerySize(
5756 Register ImageReg, Register &ResVReg, MachineInstr &I,
5757 std::optional<Register> LodReg) const {
5758 unsigned Opcode =
5759 LodReg ? SPIRV::OpImageQuerySizeLod : SPIRV::OpImageQuerySize;
5760 SPIRVTypeInst ImageType = GR.getSPIRVTypeForVReg(ImageReg);
5761 assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage &&
5762 "ImageReg is not an image type.");
5763
5764 auto Dim = static_cast<SPIRV::Dim::Dim>(ImageType->getOperand(2).getImm());
5765 bool IsArray = ImageType->getOperand(4).getImm() != 0;
5766 unsigned NumComponents = 0;
5767 switch (Dim) {
5768 case SPIRV::Dim::DIM_1D:
5769 case SPIRV::Dim::DIM_Buffer:
5770 NumComponents = IsArray ? 2 : 1;
5771 break;
5772 case SPIRV::Dim::DIM_2D:
5773 case SPIRV::Dim::DIM_Cube:
5774 case SPIRV::Dim::DIM_Rect:
5775 NumComponents = IsArray ? 3 : 2;
5776 break;
5777 case SPIRV::Dim::DIM_3D:
5778 NumComponents = 3;
5779 break;
5780 default:
5781 I.emitGenericError("Unsupported image dimension for OpImageQuerySize.");
5782 return false;
5783 }
5784
5785 SPIRVTypeInst I32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
5786 SPIRVTypeInst ResType =
5787 NumComponents == 1
5788 ? I32Ty
5789 : GR.getOrCreateSPIRVVectorType(I32Ty, NumComponents, I, TII);
5790
5791 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
5792 .addDef(ResVReg)
5793 .addUse(GR.getSPIRVTypeID(ResType))
5794 .addUse(ImageReg);
5795 if (LodReg)
5796 MIB.addUse(*LodReg);
5797 MIB.constrainAllUses(TII, TRI, RBI);
5798 return true;
5799}
5800
5801bool SPIRVInstructionSelector::selectGetDimensionsIntrinsic(
5802 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5803 Register ImageReg = I.getOperand(2).getReg();
5804 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5805 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5806 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5807 *ImageDef, I)) {
5808 return false;
5809 }
5810 return selectImageQuerySize(NewImageReg, ResVReg, I);
5811}
5812
5813bool SPIRVInstructionSelector::selectGetDimensionsLevelsIntrinsic(
5814 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5815 Register ImageReg = I.getOperand(2).getReg();
5816 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5817 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5818 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5819 *ImageDef, I)) {
5820 return false;
5821 }
5822
5823 Register SizeReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5824 Register LodReg = I.getOperand(3).getReg();
5825
5826 assert(GR.getSPIRVTypeForVReg(NewImageReg)->getOperand(6).getImm() == 1 &&
5827 "OpImageQuerySizeLod and OpImageQueryLevels require a sampled image");
5828
5829 if (!selectImageQuerySize(NewImageReg, SizeReg, I, LodReg)) {
5830 return false;
5831 }
5832
5833 SPIRVTypeInst I32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
5834 Register LevelsReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5835 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5836 TII.get(SPIRV::OpImageQueryLevels))
5837 .addDef(LevelsReg)
5838 .addUse(GR.getSPIRVTypeID(I32Ty))
5839 .addUse(NewImageReg)
5840 .constrainAllUses(TII, TRI, RBI);
5841
5842 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5843 TII.get(SPIRV::OpCompositeConstruct))
5844 .addDef(ResVReg)
5845 .addUse(GR.getSPIRVTypeID(ResType))
5846 .addUse(SizeReg)
5847 .addUse(LevelsReg)
5848 .constrainAllUses(TII, TRI, RBI);
5849
5850 return true;
5851}
5852
5853bool SPIRVInstructionSelector::selectGetDimensionsMSIntrinsic(
5854 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5855 Register ImageReg = I.getOperand(2).getReg();
5856 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5857 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5858 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5859 *ImageDef, I)) {
5860 return false;
5861 }
5862
5863 Register SizeReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5864
5865 assert(GR.getSPIRVTypeForVReg(NewImageReg)->getOperand(5).getImm() == 1 &&
5866 "OpImageQuerySamples requires a multisampled image");
5867
5868 if (!selectImageQuerySize(NewImageReg, SizeReg, I)) {
5869 return false;
5870 }
5871
5872 Register SamplesReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5873
5874 SPIRVTypeInst I32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
5875 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5876 TII.get(SPIRV::OpImageQuerySamples))
5877 .addDef(SamplesReg)
5878 .addUse(GR.getSPIRVTypeID(I32Ty))
5879 .addUse(NewImageReg)
5880 .constrainAllUses(TII, TRI, RBI);
5881
5882 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5883 TII.get(SPIRV::OpCompositeConstruct))
5884 .addDef(ResVReg)
5885 .addUse(GR.getSPIRVTypeID(ResType))
5886 .addUse(SizeReg)
5887 .addUse(SamplesReg)
5888 .constrainAllUses(TII, TRI, RBI);
5889
5890 return true;
5891}
5892
5893bool SPIRVInstructionSelector::selectCalculateLodIntrinsic(
5894 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5895 Register ImageReg = I.getOperand(2).getReg();
5896 Register SamplerReg = I.getOperand(3).getReg();
5897 Register CoordinateReg = I.getOperand(4).getReg();
5898
5899 auto *ImageDef = dyn_cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5900 if (!ImageDef)
5901 return false;
5902 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5903 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5904 *ImageDef, I)) {
5905 return false;
5906 }
5907
5908 auto *SamplerDef = dyn_cast<GIntrinsic>(getVRegDef(*MRI, SamplerReg));
5909 if (!SamplerDef)
5910 return false;
5911 Register NewSamplerReg =
5912 MRI->createVirtualRegister(MRI->getRegClass(SamplerReg));
5913 if (!loadHandleBeforePosition(
5914 NewSamplerReg, GR.getSPIRVTypeForVReg(SamplerReg), *SamplerDef, I)) {
5915 return false;
5916 }
5917
5918 MachineIRBuilder MIRBuilder(I);
5919 SPIRVTypeInst SampledImageType = GR.getOrCreateOpTypeSampledImage(
5920 GR.getSPIRVTypeForVReg(ImageReg), MIRBuilder);
5921 Register SampledImageReg =
5922 MRI->createVirtualRegister(GR.getRegClass(SampledImageType));
5923
5924 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpSampledImage))
5925 .addDef(SampledImageReg)
5926 .addUse(GR.getSPIRVTypeID(SampledImageType))
5927 .addUse(NewImageReg)
5928 .addUse(NewSamplerReg)
5929 .constrainAllUses(TII, TRI, RBI);
5930
5931 SPIRVTypeInst Vec2Ty = GR.getOrCreateSPIRVVectorType(ResType, 2, I, TII);
5932 Register QueryResultReg = MRI->createVirtualRegister(GR.getRegClass(Vec2Ty));
5933
5934 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpImageQueryLod))
5935 .addDef(QueryResultReg)
5936 .addUse(GR.getSPIRVTypeID(Vec2Ty))
5937 .addUse(SampledImageReg)
5938 .addUse(CoordinateReg)
5939 .constrainAllUses(TII, TRI, RBI);
5940
5941 unsigned ExtractedIndex =
5942 cast<GIntrinsic>(I).getIntrinsicID() ==
5943 Intrinsic::spv_resource_calculate_lod_unclamped
5944 ? 1
5945 : 0;
5946
5947 MachineInstrBuilder MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
5948 TII.get(SPIRV::OpCompositeExtract))
5949 .addDef(ResVReg)
5950 .addUse(GR.getSPIRVTypeID(ResType))
5951 .addUse(QueryResultReg)
5952 .addImm(ExtractedIndex);
5953
5954 MIB.constrainAllUses(TII, TRI, RBI);
5955 return true;
5956}
5957
5958bool SPIRVInstructionSelector::selectSampleBasicIntrinsic(
5959 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5960 Register ImageReg = I.getOperand(2).getReg();
5961 Register SamplerReg = I.getOperand(3).getReg();
5962 Register CoordinateReg = I.getOperand(4).getReg();
5963 ImageOperands ImOps;
5964 if (I.getNumOperands() > 5)
5965 ImOps.Offset = I.getOperand(5).getReg();
5966 if (I.getNumOperands() > 6)
5967 ImOps.MinLod = I.getOperand(6).getReg();
5968 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
5969 CoordinateReg, ImOps, I.getDebugLoc(), I);
5970}
5971
5972bool SPIRVInstructionSelector::selectSampleBiasIntrinsic(
5973 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5974 Register ImageReg = I.getOperand(2).getReg();
5975 Register SamplerReg = I.getOperand(3).getReg();
5976 Register CoordinateReg = I.getOperand(4).getReg();
5977 ImageOperands ImOps;
5978 ImOps.Bias = I.getOperand(5).getReg();
5979 if (I.getNumOperands() > 6)
5980 ImOps.Offset = I.getOperand(6).getReg();
5981 if (I.getNumOperands() > 7)
5982 ImOps.MinLod = I.getOperand(7).getReg();
5983 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
5984 CoordinateReg, ImOps, I.getDebugLoc(), I);
5985}
5986
5987bool SPIRVInstructionSelector::selectSampleGradIntrinsic(
5988 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5989 Register ImageReg = I.getOperand(2).getReg();
5990 Register SamplerReg = I.getOperand(3).getReg();
5991 Register CoordinateReg = I.getOperand(4).getReg();
5992 ImageOperands ImOps;
5993 ImOps.GradX = I.getOperand(5).getReg();
5994 ImOps.GradY = I.getOperand(6).getReg();
5995 if (I.getNumOperands() > 7)
5996 ImOps.Offset = I.getOperand(7).getReg();
5997 if (I.getNumOperands() > 8)
5998 ImOps.MinLod = I.getOperand(8).getReg();
5999 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6000 CoordinateReg, ImOps, I.getDebugLoc(), I);
6001}
6002
6003bool SPIRVInstructionSelector::selectSampleLevelIntrinsic(
6004 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6005 Register ImageReg = I.getOperand(2).getReg();
6006 Register SamplerReg = I.getOperand(3).getReg();
6007 Register CoordinateReg = I.getOperand(4).getReg();
6008 ImageOperands ImOps;
6009 ImOps.Lod = I.getOperand(5).getReg();
6010 if (I.getNumOperands() > 6)
6011 ImOps.Offset = I.getOperand(6).getReg();
6012 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6013 CoordinateReg, ImOps, I.getDebugLoc(), I);
6014}
6015
6016bool SPIRVInstructionSelector::selectSampleCmpIntrinsic(Register &ResVReg,
6017 SPIRVTypeInst ResType,
6018 MachineInstr &I) const {
6019 Register ImageReg = I.getOperand(2).getReg();
6020 Register SamplerReg = I.getOperand(3).getReg();
6021 Register CoordinateReg = I.getOperand(4).getReg();
6022 ImageOperands ImOps;
6023 ImOps.Compare = I.getOperand(5).getReg();
6024 if (I.getNumOperands() > 6)
6025 ImOps.Offset = I.getOperand(6).getReg();
6026 if (I.getNumOperands() > 7)
6027 ImOps.MinLod = I.getOperand(7).getReg();
6028 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6029 CoordinateReg, ImOps, I.getDebugLoc(), I);
6030}
6031
6032bool SPIRVInstructionSelector::selectLoadLevelIntrinsic(Register &ResVReg,
6033 SPIRVTypeInst ResType,
6034 MachineInstr &I) const {
6035 Register ImageReg = I.getOperand(2).getReg();
6036 Register CoordinateReg = I.getOperand(3).getReg();
6037 Register LodReg = I.getOperand(4).getReg();
6038
6039 ImageOperands ImOps;
6040 ImOps.Lod = LodReg;
6041 if (I.getNumOperands() > 5)
6042 ImOps.Offset = I.getOperand(5).getReg();
6043
6044 auto *ImageDef = dyn_cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
6045 if (!ImageDef)
6046 return false;
6047
6048 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
6049 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
6050 *ImageDef, I)) {
6051 return false;
6052 }
6053
6054 return generateImageReadOrFetch(ResVReg, ResType, NewImageReg, CoordinateReg,
6055 I.getDebugLoc(), I, &ImOps);
6056}
6057
6058bool SPIRVInstructionSelector::selectSampleCmpLevelZeroIntrinsic(
6059 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6060 Register ImageReg = I.getOperand(2).getReg();
6061 Register SamplerReg = I.getOperand(3).getReg();
6062 Register CoordinateReg = I.getOperand(4).getReg();
6063 ImageOperands ImOps;
6064 ImOps.Compare = I.getOperand(5).getReg();
6065 if (I.getNumOperands() > 6)
6066 ImOps.Offset = I.getOperand(6).getReg();
6067 SPIRVTypeInst FloatTy = GR.getOrCreateSPIRVFloatType(32, I, TII);
6068 ImOps.Lod = GR.getOrCreateConstFP(APFloat(0.0f), I, FloatTy, TII);
6069 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6070 CoordinateReg, ImOps, I.getDebugLoc(), I);
6071}
6072
6073bool SPIRVInstructionSelector::selectGatherIntrinsic(Register &ResVReg,
6074 SPIRVTypeInst ResType,
6075 MachineInstr &I) const {
6076 Register ImageReg = I.getOperand(2).getReg();
6077 Register SamplerReg = I.getOperand(3).getReg();
6078 Register CoordinateReg = I.getOperand(4).getReg();
6079 SPIRVTypeInst ImageType = GR.getSPIRVTypeForVReg(ImageReg);
6080 assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage &&
6081 "ImageReg is not an image type.");
6082
6083 Register ComponentOrCompareReg;
6084 Register OffsetReg;
6085
6086 ComponentOrCompareReg = I.getOperand(5).getReg();
6087 OffsetReg = I.getOperand(6).getReg();
6088 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
6089 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
6090 if (!loadHandleBeforePosition(NewImageReg, ImageType, *ImageDef, I)) {
6091 return false;
6092 }
6093
6094 auto Dim = static_cast<SPIRV::Dim::Dim>(ImageType->getOperand(2).getImm());
6095 if (Dim != SPIRV::Dim::DIM_2D && Dim != SPIRV::Dim::DIM_Cube &&
6096 Dim != SPIRV::Dim::DIM_Rect) {
6097 I.emitGenericError(
6098 "Gather operations are only supported for 2D, Cube, and Rect images.");
6099 return false;
6100 }
6101
6102 auto *SamplerDef = cast<GIntrinsic>(getVRegDef(*MRI, SamplerReg));
6103 Register NewSamplerReg =
6104 MRI->createVirtualRegister(MRI->getRegClass(SamplerReg));
6105 if (!loadHandleBeforePosition(
6106 NewSamplerReg, GR.getSPIRVTypeForVReg(SamplerReg), *SamplerDef, I)) {
6107 return false;
6108 }
6109
6110 MachineIRBuilder MIRBuilder(I);
6111 SPIRVTypeInst SampledImageType =
6112 GR.getOrCreateOpTypeSampledImage(ImageType, MIRBuilder);
6113 Register SampledImageReg =
6114 MRI->createVirtualRegister(GR.getRegClass(SampledImageType));
6115
6116 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpSampledImage))
6117 .addDef(SampledImageReg)
6118 .addUse(GR.getSPIRVTypeID(SampledImageType))
6119 .addUse(NewImageReg)
6120 .addUse(NewSamplerReg)
6121 .constrainAllUses(TII, TRI, RBI);
6122
6123 auto IntrId = cast<GIntrinsic>(I).getIntrinsicID();
6124 bool IsGatherCmp = IntrId == Intrinsic::spv_resource_gather_cmp;
6125 unsigned Opcode =
6126 IsGatherCmp ? SPIRV::OpImageDrefGather : SPIRV::OpImageGather;
6127
6128 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
6129 .addDef(ResVReg)
6130 .addUse(GR.getSPIRVTypeID(ResType))
6131 .addUse(SampledImageReg)
6132 .addUse(CoordinateReg)
6133 .addUse(ComponentOrCompareReg);
6134
6135 uint32_t ImageOperands = 0;
6136 if (OffsetReg && !isScalarOrVectorIntConstantZero(OffsetReg)) {
6137 if (Dim == SPIRV::Dim::DIM_Cube) {
6138 I.emitGenericError(
6139 "Gather operations with offset are not supported for Cube images.");
6140 return false;
6141 }
6142 if (isConstReg(MRI, OffsetReg))
6143 ImageOperands |= SPIRV::ImageOperand::ConstOffset;
6144 else {
6145 ImageOperands |= SPIRV::ImageOperand::Offset;
6146 }
6147 }
6148
6149 if (ImageOperands != 0) {
6150 MIB.addImm(ImageOperands);
6151 if (ImageOperands &
6152 (SPIRV::ImageOperand::ConstOffset | SPIRV::ImageOperand::Offset))
6153 MIB.addUse(OffsetReg);
6154 }
6155
6156 MIB.constrainAllUses(TII, TRI, RBI);
6157 return true;
6158}
6159
6160bool SPIRVInstructionSelector::generateImageReadOrFetch(
6161 Register &ResVReg, SPIRVTypeInst ResType, Register ImageReg,
6162 Register IdxReg, DebugLoc Loc, MachineInstr &Pos,
6163 const ImageOperands *ImOps) const {
6164 SPIRVTypeInst ImageType = GR.getSPIRVTypeForVReg(ImageReg);
6165 assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage &&
6166 "ImageReg is not an image type.");
6167
6168 bool IsSignedInteger =
6169 sampledTypeIsSignedInteger(GR.getTypeForSPIRVType(ImageType));
6170 // Check if the "sampled" operand of the image type is 1.
6171 // https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#OpImageFetch
6172 auto SampledOp = ImageType->getOperand(6);
6173 bool IsFetch = (SampledOp.getImm() == 1);
6174
6175 auto AddOperands = [&](MachineInstrBuilder &MIB) {
6176 uint32_t ImageOperandsMask = 0;
6177 if (IsSignedInteger)
6178 ImageOperandsMask |= 0x1000; // SignExtend
6179
6180 if (IsFetch && ImOps) {
6181 if (ImOps->Lod)
6182 ImageOperandsMask |= SPIRV::ImageOperand::Lod;
6183 if (ImOps->Offset && !isScalarOrVectorIntConstantZero(*ImOps->Offset)) {
6184 if (isConstReg(MRI, *ImOps->Offset))
6185 ImageOperandsMask |= SPIRV::ImageOperand::ConstOffset;
6186 else
6187 ImageOperandsMask |= SPIRV::ImageOperand::Offset;
6188 }
6189 }
6190
6191 if (ImageOperandsMask != 0) {
6192 MIB.addImm(ImageOperandsMask);
6193 if (IsFetch && ImOps) {
6194 if (ImOps->Lod)
6195 MIB.addUse(*ImOps->Lod);
6196 if (ImOps->Offset &&
6197 (ImageOperandsMask &
6198 (SPIRV::ImageOperand::Offset | SPIRV::ImageOperand::ConstOffset)))
6199 MIB.addUse(*ImOps->Offset);
6200 }
6201 }
6202 };
6203
6204 uint64_t ResultSize = GR.getScalarOrVectorComponentCount(ResType);
6205 if (ResultSize == 4) {
6206 auto BMI =
6207 BuildMI(*Pos.getParent(), Pos, Loc,
6208 TII.get(IsFetch ? SPIRV::OpImageFetch : SPIRV::OpImageRead))
6209 .addDef(ResVReg)
6210 .addUse(GR.getSPIRVTypeID(ResType))
6211 .addUse(ImageReg)
6212 .addUse(IdxReg);
6213
6214 AddOperands(BMI);
6215 BMI.constrainAllUses(TII, TRI, RBI);
6216 return true;
6217 }
6218
6219 SPIRVTypeInst ReadType = widenTypeToVec4(ResType, Pos);
6220 Register ReadReg = MRI->createVirtualRegister(GR.getRegClass(ReadType));
6221 auto BMI =
6222 BuildMI(*Pos.getParent(), Pos, Loc,
6223 TII.get(IsFetch ? SPIRV::OpImageFetch : SPIRV::OpImageRead))
6224 .addDef(ReadReg)
6225 .addUse(GR.getSPIRVTypeID(ReadType))
6226 .addUse(ImageReg)
6227 .addUse(IdxReg);
6228 AddOperands(BMI);
6229 BMI.constrainAllUses(TII, TRI, RBI);
6230
6231 if (ResultSize == 1) {
6232 BuildMI(*Pos.getParent(), Pos, Loc, TII.get(SPIRV::OpCompositeExtract))
6233 .addDef(ResVReg)
6234 .addUse(GR.getSPIRVTypeID(ResType))
6235 .addUse(ReadReg)
6236 .addImm(0)
6237 .constrainAllUses(TII, TRI, RBI);
6238 return true;
6239 }
6240 return extractSubvector(ResVReg, ResType, ReadReg, Pos);
6241}
6242
6243bool SPIRVInstructionSelector::selectResourceGetPointer(Register &ResVReg,
6244 SPIRVTypeInst ResType,
6245 MachineInstr &I) const {
6246 Register ResourcePtr = I.getOperand(2).getReg();
6247 SPIRVTypeInst RegType = GR.getSPIRVTypeForVReg(ResourcePtr, I.getMF());
6248 if (RegType->getOpcode() == SPIRV::OpTypeImage) {
6249 // For texel buffers, the index into the image is part of the OpImageRead or
6250 // OpImageWrite instructions. So we will do nothing in this case. This
6251 // intrinsic will be combined with the load or store when selecting the load
6252 // or store.
6253 return true;
6254 }
6255
6256 assert(ResType->getOpcode() == SPIRV::OpTypePointer);
6257 MachineIRBuilder MIRBuilder(I);
6258
6259 Register ZeroReg =
6260 buildZerosVal(GR.getOrCreateSPIRVIntegerType(32, I, TII), I);
6261 auto MIB =
6262 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAccessChain))
6263 .addDef(ResVReg)
6264 .addUse(GR.getSPIRVTypeID(ResType))
6265 .addUse(ResourcePtr)
6266 .addUse(ZeroReg);
6267
6268 if (I.getNumExplicitOperands() > 3) {
6269 Register IndexReg = I.getOperand(3).getReg();
6270 MIB.addUse(IndexReg);
6271 }
6272 MIB.constrainAllUses(TII, TRI, RBI);
6273 return true;
6274}
6275
6276bool SPIRVInstructionSelector::selectPushConstantGetPointer(
6277 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6278 MRI->replaceRegWith(ResVReg, I.getOperand(2).getReg());
6279 return true;
6280}
6281
6282bool SPIRVInstructionSelector::selectResourceNonUniformIndex(
6283 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6284 Register ObjReg = I.getOperand(2).getReg();
6285 if (!BuildCOPY(ResVReg, ObjReg, I))
6286 return false;
6287
6288 buildOpDecorate(ResVReg, I, TII, SPIRV::Decoration::NonUniformEXT, {});
6289 // Check for the registers that use the index marked as non-uniform
6290 // and recursively mark them as non-uniform.
6291 // Per the spec, it's necessary that the final argument used for
6292 // load/store/sample/atomic must be decorated, so we need to propagate the
6293 // decoration through access chains and copies.
6294 // https://docs.vulkan.org/samples/latest/samples/extensions/descriptor_indexing/README.html#_when_to_use_non_uniform_indexing_qualifier
6295 decorateUsesAsNonUniform(ResVReg);
6296 return true;
6297}
6298
6299void SPIRVInstructionSelector::decorateUsesAsNonUniform(
6300 Register &NonUniformReg) const {
6301 llvm::SmallVector<Register> WorkList = {NonUniformReg};
6302 while (WorkList.size() > 0) {
6303 Register CurrentReg = WorkList.back();
6304 WorkList.pop_back();
6305
6306 bool IsDecorated = false;
6307 for (MachineInstr &Use : MRI->use_instructions(CurrentReg)) {
6308 if (Use.getOpcode() == SPIRV::OpDecorate &&
6309 Use.getOperand(1).getImm() == SPIRV::Decoration::NonUniformEXT) {
6310 IsDecorated = true;
6311 continue;
6312 }
6313 // Check if the instruction has the result register and add it to the
6314 // worklist.
6315 if (Use.getOperand(0).isReg() && Use.getOperand(0).isDef()) {
6316 Register ResultReg = Use.getOperand(0).getReg();
6317 if (ResultReg == CurrentReg)
6318 continue;
6319 WorkList.push_back(ResultReg);
6320 }
6321 }
6322
6323 if (!IsDecorated) {
6324 buildOpDecorate(CurrentReg, *MRI->getVRegDef(CurrentReg), TII,
6325 SPIRV::Decoration::NonUniformEXT, {});
6326 }
6327 }
6328}
6329
6330bool SPIRVInstructionSelector::extractSubvector(
6331 Register &ResVReg, SPIRVTypeInst ResType, Register &ReadReg,
6332 MachineInstr &InsertionPoint) const {
6333 SPIRVTypeInst InputType = GR.getResultType(ReadReg);
6334 [[maybe_unused]] uint64_t InputSize =
6335 GR.getScalarOrVectorComponentCount(InputType);
6336 uint64_t ResultSize = GR.getScalarOrVectorComponentCount(ResType);
6337 assert(InputSize > 1 && "The input must be a vector.");
6338 assert(ResultSize > 1 && "The result must be a vector.");
6339 assert(ResultSize < InputSize &&
6340 "Cannot extract more element than there are in the input.");
6341 SmallVector<Register> ComponentRegisters;
6342 SPIRVTypeInst ScalarType = GR.getScalarOrVectorComponentType(ResType);
6343 const TargetRegisterClass *ScalarRegClass = GR.getRegClass(ScalarType);
6344 for (uint64_t I = 0; I < ResultSize; I++) {
6345 Register ComponentReg = MRI->createVirtualRegister(ScalarRegClass);
6346 BuildMI(*InsertionPoint.getParent(), InsertionPoint,
6347 InsertionPoint.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
6348 .addDef(ComponentReg)
6349 .addUse(ScalarType->getOperand(0).getReg())
6350 .addUse(ReadReg)
6351 .addImm(I)
6352 .constrainAllUses(TII, TRI, RBI);
6353 ComponentRegisters.emplace_back(ComponentReg);
6354 }
6355
6356 MachineInstrBuilder MIB = BuildMI(*InsertionPoint.getParent(), InsertionPoint,
6357 InsertionPoint.getDebugLoc(),
6358 TII.get(SPIRV::OpCompositeConstruct))
6359 .addDef(ResVReg)
6360 .addUse(GR.getSPIRVTypeID(ResType));
6361
6362 for (Register ComponentReg : ComponentRegisters)
6363 MIB.addUse(ComponentReg);
6364 MIB.constrainAllUses(TII, TRI, RBI);
6365 return true;
6366}
6367
6368bool SPIRVInstructionSelector::selectImageWriteIntrinsic(
6369 MachineInstr &I) const {
6370 // If the load of the image is in a different basic block, then
6371 // this will generate invalid code. A proper solution is to move
6372 // the OpLoad from selectHandleFromBinding here. However, to do
6373 // that we will need to change the return type of the intrinsic.
6374 // We will do that when we can, but for now trying to move forward with other
6375 // issues.
6376 Register ImageReg = I.getOperand(1).getReg();
6377 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
6378 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
6379 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
6380 *ImageDef, I)) {
6381 return false;
6382 }
6383
6384 Register CoordinateReg = I.getOperand(2).getReg();
6385 Register DataReg = I.getOperand(3).getReg();
6386 assert(GR.getResultType(DataReg)->getOpcode() == SPIRV::OpTypeVector);
6387 assert(GR.getScalarOrVectorComponentCount(GR.getResultType(DataReg)) == 4);
6388 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpImageWrite))
6389 .addUse(NewImageReg)
6390 .addUse(CoordinateReg)
6391 .addUse(DataReg)
6392 .constrainAllUses(TII, TRI, RBI);
6393 return true;
6394}
6395
6396Register SPIRVInstructionSelector::buildPointerToResource(
6397 SPIRVTypeInst SpirvResType, SPIRV::StorageClass::StorageClass SC,
6398 uint32_t Set, uint32_t Binding, uint32_t ArraySize, Register IndexReg,
6399 StringRef Name, MachineIRBuilder MIRBuilder) const {
6400 const Type *ResType = GR.getTypeForSPIRVType(SpirvResType);
6401 if (ArraySize == 1) {
6402 SPIRVTypeInst PtrType =
6403 GR.getOrCreateSPIRVPointerType(ResType, MIRBuilder, SC);
6404 assert(GR.getPointeeType(PtrType) == SpirvResType &&
6405 "SpirvResType did not have an explicit layout.");
6406 return GR.getOrCreateGlobalVariableWithBinding(PtrType, Set, Binding, Name,
6407 MIRBuilder);
6408 }
6409
6410 const Type *VarType = ArrayType::get(const_cast<Type *>(ResType), ArraySize);
6411 SPIRVTypeInst VarPointerType =
6412 GR.getOrCreateSPIRVPointerType(VarType, MIRBuilder, SC);
6413 Register VarReg = GR.getOrCreateGlobalVariableWithBinding(
6414 VarPointerType, Set, Binding, Name, MIRBuilder);
6415
6416 SPIRVTypeInst ResPointerType =
6417 GR.getOrCreateSPIRVPointerType(ResType, MIRBuilder, SC);
6418 Register AcReg = MRI->createVirtualRegister(GR.getRegClass(ResPointerType));
6419
6420 MIRBuilder.buildInstr(SPIRV::OpAccessChain)
6421 .addDef(AcReg)
6422 .addUse(GR.getSPIRVTypeID(ResPointerType))
6423 .addUse(VarReg)
6424 .addUse(IndexReg);
6425
6426 return AcReg;
6427}
6428
6429bool SPIRVInstructionSelector::selectFirstBitSet16(
6430 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
6431 unsigned ExtendOpcode, unsigned BitSetOpcode) const {
6432 Register ExtReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6433 if (!selectOpWithSrcs(ExtReg, ResType, I, {I.getOperand(2).getReg()},
6434 ExtendOpcode))
6435 return false;
6436
6437 return selectFirstBitSet32(ResVReg, ResType, I, ExtReg, BitSetOpcode);
6438}
6439
6440bool SPIRVInstructionSelector::selectFirstBitSet32(
6441 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, Register SrcReg,
6442 unsigned BitSetOpcode) const {
6443 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
6444 .addDef(ResVReg)
6445 .addUse(GR.getSPIRVTypeID(ResType))
6446 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
6447 .addImm(BitSetOpcode)
6448 .addUse(SrcReg)
6449 .constrainAllUses(TII, TRI, RBI);
6450 return true;
6451}
6452
6453bool SPIRVInstructionSelector::selectFirstBitSet64(
6454 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, Register SrcReg,
6455 unsigned BitSetOpcode, bool SwapPrimarySide) const {
6456 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
6457 SPIRVTypeInst BaseType = GR.retrieveScalarOrVectorIntType(ResType);
6458 bool ZeroAsNull = !STI.isShader();
6459 Register ConstIntZero =
6460 GR.getOrCreateConstInt(0, I, BaseType, TII, ZeroAsNull);
6461 Register ConstIntOne =
6462 GR.getOrCreateConstInt(1, I, BaseType, TII, ZeroAsNull);
6463
6464 // SPIRV doesn't support vectors with more than 4 components. Since the
6465 // algoritm below converts i64 -> i32x2 and i64x4 -> i32x8 it can only
6466 // operate on vectors with 2 or less components. When largers vectors are
6467 // seen. Split them, recurse, then recombine them.
6468 if (ComponentCount > 2) {
6469 auto Func = [this, SwapPrimarySide](Register ResVReg, SPIRVTypeInst ResType,
6470 MachineInstr &I, Register SrcReg,
6471 unsigned Opcode) -> bool {
6472 return this->selectFirstBitSet64(ResVReg, ResType, I, SrcReg, Opcode,
6473 SwapPrimarySide);
6474 };
6475
6476 return handle64BitOverflow(ResVReg, ResType, I, SrcReg, BitSetOpcode, Func);
6477 }
6478
6479 // 1. Split int64 into 2 pieces using a bitcast
6480 MachineIRBuilder MIRBuilder(I);
6481 SPIRVTypeInst PostCastType = GR.getOrCreateSPIRVVectorType(
6482 BaseType, 2 * ComponentCount, MIRBuilder, false);
6483 Register BitcastReg =
6484 MRI->createVirtualRegister(GR.getRegClass(PostCastType));
6485
6486 if (!selectOpWithSrcs(BitcastReg, PostCastType, I, {SrcReg},
6487 SPIRV::OpBitcast))
6488 return false;
6489
6490 // 2. Find the first set bit from the primary side for all the pieces in #1
6491 Register FBSReg = MRI->createVirtualRegister(GR.getRegClass(PostCastType));
6492 if (!selectFirstBitSet32(FBSReg, PostCastType, I, BitcastReg, BitSetOpcode))
6493 return false;
6494
6495 // 3. Split result vector into high bits and low bits
6496 Register HighReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6497 Register LowReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6498
6499 bool IsScalarRes = ResType->getOpcode() != SPIRV::OpTypeVector;
6500 if (IsScalarRes) {
6501 // if scalar do a vector extract
6502 if (!selectOpWithSrcs(HighReg, ResType, I, {FBSReg, ConstIntOne},
6503 SPIRV::OpVectorExtractDynamic))
6504 return false;
6505 if (!selectOpWithSrcs(LowReg, ResType, I, {FBSReg, ConstIntZero},
6506 SPIRV::OpVectorExtractDynamic))
6507 return false;
6508 } else {
6509 // if vector do a shufflevector
6510 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
6511 TII.get(SPIRV::OpVectorShuffle))
6512 .addDef(HighReg)
6513 .addUse(GR.getSPIRVTypeID(ResType))
6514 .addUse(FBSReg)
6515 // Per the spec, repeat the vector if only one vec is needed
6516 .addUse(FBSReg);
6517
6518 // high bits are stored in even natural indexes. Extract them from FBSReg
6519 for (unsigned J = 1; J < ComponentCount * 2; J += 2) {
6520 MIB.addImm(J);
6521 }
6522
6523 MIB.constrainAllUses(TII, TRI, RBI);
6524
6525 MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
6526 TII.get(SPIRV::OpVectorShuffle))
6527 .addDef(LowReg)
6528 .addUse(GR.getSPIRVTypeID(ResType))
6529 .addUse(FBSReg)
6530 // Per the spec, repeat the vector if only one vec is needed
6531 .addUse(FBSReg);
6532
6533 // low bits are stored in odd natural indices. Extract them from FBSReg
6534 for (unsigned J = 0; J < ComponentCount * 2; J += 2) {
6535 MIB.addImm(J);
6536 }
6537 MIB.constrainAllUses(TII, TRI, RBI);
6538 }
6539
6540 // 4. Check the result. When primary bits == -1 use secondary, otherwise use
6541 // primary
6542 SPIRVTypeInst BoolType = GR.getOrCreateSPIRVBoolType(I, TII);
6543 Register NegOneReg;
6544 Register Reg0;
6545 Register Reg32;
6546 unsigned SelectOp;
6547 unsigned AddOp;
6548
6549 if (IsScalarRes) {
6550 NegOneReg =
6551 GR.getOrCreateConstInt((unsigned)-1, I, ResType, TII, ZeroAsNull);
6552 Reg0 = GR.getOrCreateConstInt(0, I, ResType, TII, ZeroAsNull);
6553 Reg32 = GR.getOrCreateConstInt(32, I, ResType, TII, ZeroAsNull);
6554 SelectOp = SPIRV::OpSelectSISCond;
6555 AddOp = SPIRV::OpIAddS;
6556 } else {
6557 BoolType = GR.getOrCreateSPIRVVectorType(BoolType, ComponentCount,
6558 MIRBuilder, false);
6559 NegOneReg =
6560 GR.getOrCreateConstVector((unsigned)-1, I, ResType, TII, ZeroAsNull);
6561 Reg0 = GR.getOrCreateConstVector(0, I, ResType, TII, ZeroAsNull);
6562 Reg32 = GR.getOrCreateConstVector(32, I, ResType, TII, ZeroAsNull);
6563 SelectOp = SPIRV::OpSelectVIVCond;
6564 AddOp = SPIRV::OpIAddV;
6565 }
6566
6567 Register PrimaryReg = HighReg;
6568 Register SecondaryReg = LowReg;
6569 Register RegPrimaryOffset = Reg32;
6570 Register RegSecondaryOffset = Reg0;
6571
6572 // By default the emitted opcodes check for the set bit from the MSB side.
6573 // Setting SwapPrimarySide checks the set bit from the LSB side
6574 if (SwapPrimarySide) {
6575 PrimaryReg = LowReg;
6576 SecondaryReg = HighReg;
6577 RegPrimaryOffset = Reg0;
6578 RegSecondaryOffset = Reg32;
6579 }
6580
6581 Register RegSecondaryHasVal =
6582 MRI->createVirtualRegister(GR.getRegClass(BoolType));
6583 if (!selectOpWithSrcs(RegSecondaryHasVal, BoolType, I,
6584 {SecondaryReg, NegOneReg}, SPIRV::OpINotEqual))
6585 return false;
6586
6587 Register RegPrimaryHasVal =
6588 MRI->createVirtualRegister(GR.getRegClass(BoolType));
6589 if (!selectOpWithSrcs(RegPrimaryHasVal, BoolType, I, {PrimaryReg, NegOneReg},
6590 SPIRV::OpINotEqual))
6591 return false;
6592
6593 // Pass 1: seed with secondary (lower-priority fallback)
6594 // ReturnBits = secondaryHasVal ? SecondaryBits : -1
6595 // Add = secondaryHasVal ? SecondaryOffset : 0
6596 Register RegReturnBits = MRI->createVirtualRegister(GR.getRegClass(ResType));
6597 if (!selectOpWithSrcs(RegReturnBits, ResType, I,
6598 {RegSecondaryHasVal, SecondaryReg, NegOneReg},
6599 SelectOp))
6600 return false;
6601
6602 Register RegAdd;
6603 if (SwapPrimarySide) {
6604 RegAdd = MRI->createVirtualRegister(GR.getRegClass(ResType));
6605 if (!selectOpWithSrcs(RegAdd, ResType, I,
6606 {RegSecondaryHasVal, RegSecondaryOffset, Reg0},
6607 SelectOp))
6608 return false;
6609 } else {
6610 RegAdd = Reg0;
6611 }
6612
6613 // Pass 2: override with primary (higher priority) if it has a valid result
6614 // ReturnBits2 = primaryHasVal ? PrimaryBits : ReturnBits
6615 // Add2 = primaryHasVal ? PrimaryOffset : Add
6616 Register RegReturnBits2 = MRI->createVirtualRegister(GR.getRegClass(ResType));
6617 if (!selectOpWithSrcs(RegReturnBits2, ResType, I,
6618 {RegPrimaryHasVal, PrimaryReg, RegReturnBits},
6619 SelectOp))
6620 return false;
6621
6622 Register RegAdd2 = MRI->createVirtualRegister(GR.getRegClass(ResType));
6623 if (!selectOpWithSrcs(RegAdd2, ResType, I,
6624 {RegPrimaryHasVal, RegPrimaryOffset, RegAdd}, SelectOp))
6625 return false;
6626
6627 return selectOpWithSrcs(ResVReg, ResType, I, {RegReturnBits2, RegAdd2},
6628 AddOp);
6629}
6630
6631bool SPIRVInstructionSelector::selectFirstBitHigh(Register ResVReg,
6632 SPIRVTypeInst ResType,
6633 MachineInstr &I,
6634 bool IsSigned) const {
6635 // FindUMsb and FindSMsb intrinsics only support 32 bit integers
6636 Register OpReg = I.getOperand(2).getReg();
6637 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
6638 // zero or sign extend
6639 unsigned ExtendOpcode = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
6640 unsigned BitSetOpcode = IsSigned ? GL::FindSMsb : GL::FindUMsb;
6641
6642 switch (GR.getScalarOrVectorBitWidth(OpType)) {
6643 case 16:
6644 return selectFirstBitSet16(ResVReg, ResType, I, ExtendOpcode, BitSetOpcode);
6645 case 32:
6646 return selectFirstBitSet32(ResVReg, ResType, I, OpReg, BitSetOpcode);
6647 case 64:
6648 return selectFirstBitSet64(ResVReg, ResType, I, OpReg, BitSetOpcode,
6649 /*SwapPrimarySide=*/false);
6650 default:
6651 return diagnoseUnsupported(
6652 I,
6653 "spv_firstbituhigh and spv_firstbitshigh only support 16,32,64 bits.");
6654 }
6655}
6656
6657bool SPIRVInstructionSelector::selectFirstBitLow(Register ResVReg,
6658 SPIRVTypeInst ResType,
6659 MachineInstr &I) const {
6660 // FindILsb intrinsic only supports 32 bit integers
6661 Register OpReg = I.getOperand(2).getReg();
6662 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
6663 // OpUConvert treats the operand bits as an unsigned i16 and zero extends it
6664 // to an unsigned i32. As this leaves all the least significant bits unchanged
6665 // so the first set bit from the LSB side doesn't change.
6666 unsigned ExtendOpcode = SPIRV::OpUConvert;
6667 unsigned BitSetOpcode = GL::FindILsb;
6668
6669 switch (GR.getScalarOrVectorBitWidth(OpType)) {
6670 case 16:
6671 return selectFirstBitSet16(ResVReg, ResType, I, ExtendOpcode, BitSetOpcode);
6672 case 32:
6673 return selectFirstBitSet32(ResVReg, ResType, I, OpReg, BitSetOpcode);
6674 case 64:
6675 return selectFirstBitSet64(ResVReg, ResType, I, OpReg, BitSetOpcode,
6676 /*SwapPrimarySide=*/true);
6677 default:
6678 return diagnoseUnsupported(I,
6679 "spv_firstbitlow only supports 16,32,64 bits.");
6680 }
6681}
6682
6683bool SPIRVInstructionSelector::selectAllocaArray(Register ResVReg,
6684 SPIRVTypeInst ResType,
6685 MachineInstr &I) const {
6686 // there was an allocation size parameter to the allocation instruction
6687 // that is not 1
6688 MachineBasicBlock &BB = *I.getParent();
6689 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVariableLengthArrayINTEL))
6690 .addDef(ResVReg)
6691 .addUse(GR.getSPIRVTypeID(ResType))
6692 .addUse(I.getOperand(2).getReg())
6693 .constrainAllUses(TII, TRI, RBI);
6694 if (!STI.isShader()) {
6695 unsigned Alignment = I.getOperand(3).getImm();
6696 buildOpDecorate(ResVReg, I, TII, SPIRV::Decoration::Alignment, {Alignment});
6697 }
6698 return true;
6699}
6700
6701// Returns true iff `Ty` is a concrete SPIR-V type per the SPV_KHR_abort
6702// definition: a numerical scalar (int/float), a (physical) pointer, a vector,
6703// matrix or any aggregate (array/struct) recursively containing only such
6704// types. OpTypeBool, OpTypeVoid, opaque handles and similar abstract
6705// non-concrete types are rejected.
6706static bool isConcreteSPIRVType(SPIRVTypeInst Ty,
6707 const SPIRVGlobalRegistry &GR) {
6708 SmallVector<SPIRVTypeInst, 4> Worklist{Ty};
6709 while (!Worklist.empty()) {
6710 SPIRVTypeInst T = Worklist.pop_back_val();
6711 switch (T->getOpcode()) {
6712 case SPIRV::OpTypeInt:
6713 case SPIRV::OpTypeFloat:
6714 case SPIRV::OpTypePointer:
6715 break;
6716 case SPIRV::OpTypeVector:
6717 case SPIRV::OpTypeMatrix:
6718 case SPIRV::OpTypeArray: {
6719 Register OperandReg = T->getOperand(1).getReg();
6720 SPIRVTypeInst ElementT = GR.getSPIRVTypeForVReg(OperandReg);
6721 Worklist.push_back(ElementT);
6722 } break;
6723 case SPIRV::OpTypeStruct:
6724 for (unsigned Idx = 1, E = T->getNumOperands(); Idx < E; ++Idx) {
6725 Register OperandReg = T->getOperand(Idx).getReg();
6726 SPIRVTypeInst ElementT = GR.getSPIRVTypeForVReg(OperandReg);
6727 Worklist.push_back(ElementT);
6728 }
6729 break;
6730 default:
6731 return false;
6732 }
6733 }
6734 return true;
6735}
6736
6737bool SPIRVInstructionSelector::selectAbort(MachineInstr &I) const {
6738 assert(I.getNumExplicitOperands() == 2);
6739
6740 Register MsgReg = I.getOperand(1).getReg();
6741 SPIRVTypeInst MsgType = GR.getSPIRVTypeForVReg(MsgReg);
6742 assert(MsgType && "Message argument of llvm.spv.abort has no SPIR-V type");
6743
6744 if (!isConcreteSPIRVType(MsgType, GR))
6745 return diagnoseUnsupported(
6746 I,
6747 "llvm.spv.abort message type must be a concrete SPIR-V type (numerical "
6748 "scalar, pointer, vector, matrix, or aggregate of such types)");
6749
6750 MachineBasicBlock &BB = *I.getParent();
6751 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpAbortKHR))
6752 .addUse(GR.getSPIRVTypeID(MsgType))
6753 .addUse(MsgReg)
6754 .constrainAllUses(TII, TRI, RBI);
6755 return true;
6756}
6757
6758bool SPIRVInstructionSelector::selectTrap(MachineInstr &I) const {
6759 // When the SPV_KHR_abort extension is disabled, drop the G_TRAP and
6760 // G_UBSANTRAP silently.
6761 if (!STI.canUseExtension(SPIRV::Extension::SPV_KHR_abort))
6762 return true;
6763
6764 // Use the 32-bit integer constant for the abort "message" argument:
6765 // - G_UBSANTRAP operand is zero-extended to 32 bits.
6766 // - "All ones" constant is used for G_TRAP.
6767 uint32_t MsgVal = ~0u;
6768 if (I.getOpcode() == TargetOpcode::G_UBSANTRAP)
6769 MsgVal = static_cast<uint32_t>(I.getOperand(0).getImm());
6770
6771 SPIRVTypeInst MsgType = GR.getOrCreateSPIRVIntegerType(32, I, TII);
6772 Register MsgReg = buildI32ConstantInEntryBlock(MsgVal, I, MsgType);
6773
6774 MachineBasicBlock &BB = *I.getParent();
6775 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpAbortKHR))
6776 .addUse(GR.getSPIRVTypeID(MsgType))
6777 .addUse(MsgReg)
6778 .constrainAllUses(TII, TRI, RBI);
6779 return true;
6780}
6781
6782bool SPIRVInstructionSelector::selectFrameIndex(Register ResVReg,
6783 SPIRVTypeInst ResType,
6784 MachineInstr &I) const {
6785 // Change order of instructions if needed: all OpVariable instructions in a
6786 // function must be the first instructions in the first block
6787 auto It = getOpVariableMBBIt(*I.getMF());
6788 BuildMI(*It->getParent(), It, It->getDebugLoc(), TII.get(SPIRV::OpVariable))
6789 .addDef(ResVReg)
6790 .addUse(GR.getSPIRVTypeID(ResType))
6791 .addImm(static_cast<uint32_t>(SPIRV::StorageClass::Function))
6792 .constrainAllUses(TII, TRI, RBI);
6793 if (!STI.isShader()) {
6794 unsigned Alignment = I.getOperand(2).getImm();
6795 buildOpDecorate(ResVReg, *It, TII, SPIRV::Decoration::Alignment,
6796 {Alignment});
6797 }
6798 return true;
6799}
6800
6801bool SPIRVInstructionSelector::selectBranch(MachineInstr &I) const {
6802 // InstructionSelector walks backwards through the instructions. We can use
6803 // both a G_BR and a G_BRCOND to create an OpBranchConditional. We hit G_BR
6804 // first, so can generate an OpBranchConditional here. If there is no
6805 // G_BRCOND, we just use OpBranch for a regular unconditional branch.
6806 const MachineInstr *PrevI = I.getPrevNode();
6807 MachineBasicBlock &MBB = *I.getParent();
6808 if (PrevI != nullptr && PrevI->getOpcode() == TargetOpcode::G_BRCOND) {
6809 BuildMI(MBB, I, I.getDebugLoc(), TII.get(SPIRV::OpBranchConditional))
6810 .addUse(PrevI->getOperand(0).getReg())
6811 .addMBB(PrevI->getOperand(1).getMBB())
6812 .addMBB(I.getOperand(0).getMBB())
6813 .constrainAllUses(TII, TRI, RBI);
6814 return true;
6815 }
6816 BuildMI(MBB, I, I.getDebugLoc(), TII.get(SPIRV::OpBranch))
6817 .addMBB(I.getOperand(0).getMBB())
6818 .constrainAllUses(TII, TRI, RBI);
6819 return true;
6820}
6821
6822bool SPIRVInstructionSelector::selectBranchCond(MachineInstr &I) const {
6823 // InstructionSelector walks backwards through the instructions. For an
6824 // explicit conditional branch with no fallthrough, we use both a G_BR and a
6825 // G_BRCOND to create an OpBranchConditional. We should hit G_BR first, and
6826 // generate the OpBranchConditional in selectBranch above.
6827 //
6828 // If an OpBranchConditional has been generated, we simply return, as the work
6829 // is alread done. If there is no OpBranchConditional, LLVM must be relying on
6830 // implicit fallthrough to the next basic block, so we need to create an
6831 // OpBranchConditional with an explicit "false" argument pointing to the next
6832 // basic block that LLVM would fall through to.
6833 const MachineInstr *NextI = I.getNextNode();
6834 // Check if this has already been successfully selected.
6835 if (NextI != nullptr && NextI->getOpcode() == SPIRV::OpBranchConditional)
6836 return true;
6837 // Must be relying on implicit block fallthrough, so generate an
6838 // OpBranchConditional with the "next" basic block as the "false" target.
6839 MachineBasicBlock &MBB = *I.getParent();
6840 unsigned NextMBBNum = MBB.getNextNode()->getNumber();
6841 MachineBasicBlock *NextMBB = I.getMF()->getBlockNumbered(NextMBBNum);
6842 BuildMI(MBB, I, I.getDebugLoc(), TII.get(SPIRV::OpBranchConditional))
6843 .addUse(I.getOperand(0).getReg())
6844 .addMBB(I.getOperand(1).getMBB())
6845 .addMBB(NextMBB)
6846 .constrainAllUses(TII, TRI, RBI);
6847 return true;
6848}
6849
6850bool SPIRVInstructionSelector::selectPhi(Register ResVReg,
6851 MachineInstr &I) const {
6852 auto MIB =
6853 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(TargetOpcode::PHI))
6854 .addDef(ResVReg);
6855 const unsigned NumOps = I.getNumOperands();
6856 for (unsigned i = 1; i < NumOps; i += 2) {
6857 MIB.addUse(I.getOperand(i + 0).getReg());
6858 MIB.addMBB(I.getOperand(i + 1).getMBB());
6859 }
6860 MIB.constrainAllUses(TII, TRI, RBI);
6861 return true;
6862}
6863
6864bool SPIRVInstructionSelector::selectGlobalValue(
6865 Register ResVReg, MachineInstr &I, const MachineInstr *Init) const {
6866 // FIXME: don't use MachineIRBuilder here, replace it with BuildMI.
6867 MachineIRBuilder MIRBuilder(I);
6868 const GlobalValue *GV = I.getOperand(1).getGlobal();
6869 Type *GVType = toTypedPointer(GR.getDeducedGlobalValueType(GV));
6870
6871 std::string GlobalIdent;
6872 if (!GV->hasName()) {
6873 unsigned &ID = UnnamedGlobalIDs[GV];
6874 if (ID == 0)
6875 ID = UnnamedGlobalIDs.size();
6876 GlobalIdent = "__unnamed_" + Twine(ID).str();
6877 } else {
6878 GlobalIdent = GV->getName();
6879 }
6880
6881 // Behaviour of functions as operands depends on availability of the
6882 // corresponding extension (SPV_INTEL_function_pointers):
6883 // - If there is an extension to operate with functions as operands:
6884 // We create a proper constant operand and evaluate a correct type for a
6885 // function pointer.
6886 // - Without the required extension:
6887 // We have functions as operands in tests with blocks of instruction e.g. in
6888 // transcoding/global_block.ll. These operands are not used and should be
6889 // substituted by zero constants. Their type is expected to be always
6890 // OpTypePointer Function %uchar.
6891 if (isa<Function>(GV)) {
6892 const Constant *ConstVal = GV;
6893 MachineBasicBlock &BB = *I.getParent();
6894 Register NewReg = GR.find(ConstVal, GR.CurMF);
6895 if (!NewReg.isValid()) {
6896 const Function *GVFun =
6897 STI.canUseExtension(SPIRV::Extension::SPV_INTEL_function_pointers)
6898 ? dyn_cast<Function>(GV)
6899 : nullptr;
6900 SPIRVTypeInst ResType = GR.getOrCreateSPIRVPointerType(
6901 GVType, I,
6902 GVFun ? SPIRV::StorageClass::CodeSectionINTEL
6903 : addressSpaceToStorageClass(GV->getAddressSpace(), STI));
6904 if (GVFun) {
6905 // References to a function via function pointers generate virtual
6906 // registers without a definition. We will resolve it later, during
6907 // module analysis stage.
6908 Register ResTypeReg = GR.getSPIRVTypeID(ResType);
6909 MachineRegisterInfo *MRI = MIRBuilder.getMRI();
6910 Register FuncVReg =
6911 MRI->createGenericVirtualRegister(GR.getRegType(ResType));
6912 MRI->setRegClass(FuncVReg, &SPIRV::pIDRegClass);
6913 GR.assignSPIRVTypeToVReg(ResType, FuncVReg, *GR.CurMF);
6914 MachineInstrBuilder MIB1 =
6915 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
6916 .addDef(FuncVReg)
6917 .addUse(ResTypeReg);
6918 MachineInstrBuilder MIB2 =
6919 BuildMI(BB, I, I.getDebugLoc(),
6920 TII.get(SPIRV::OpConstantFunctionPointerINTEL))
6921 .addDef(ResVReg)
6922 .addUse(ResTypeReg)
6923 .addUse(FuncVReg);
6924 GR.add(ConstVal, MIB2);
6925 // mapping the function pointer to the used Function
6926 GR.recordFunctionPointer(&MIB2.getInstr()->getOperand(2), GVFun);
6927 GR.assignSPIRVTypeToVReg(ResType, ResVReg, *GR.CurMF);
6928 MIB1.constrainAllUses(TII, TRI, RBI);
6929 MIB2.constrainAllUses(TII, TRI, RBI);
6930 return true;
6931 }
6932 MachineInstrBuilder MIB3 =
6933 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
6934 .addDef(ResVReg)
6935 .addUse(GR.getSPIRVTypeID(ResType));
6936 GR.add(ConstVal, MIB3);
6937 GR.recordFunctionPointer(&MIB3.getInstr()->getOperand(0),
6938 cast<Function>(GV));
6939 MIB3.constrainAllUses(TII, TRI, RBI);
6940 return true;
6941 }
6942 assert(NewReg != ResVReg);
6943 return BuildCOPY(ResVReg, NewReg, I);
6944 }
6945 auto GlobalVar = cast<GlobalVariable>(GV);
6946 assert(GlobalVar->getName() != "llvm.global.annotations");
6947
6948 // Skip empty declaration for GVs with initializers till we get the decl with
6949 // passed initializer.
6950 if (hasInitializer(GlobalVar) && !Init)
6951 return true;
6952
6953 const std::optional<SPIRV::LinkageType::LinkageType> LnkType =
6954 getSpirvLinkageTypeFor(STI, *GV);
6955
6956 if (LnkType && *LnkType == SPIRV::LinkageType::Import)
6957 Init = nullptr;
6958
6959 const unsigned AddrSpace = GV->getAddressSpace();
6960 SPIRV::StorageClass::StorageClass StorageClass =
6961 addressSpaceToStorageClass(AddrSpace, STI);
6962 SPIRVTypeInst ResType =
6963 GR.getOrCreateSPIRVPointerType(GVType, I, StorageClass);
6964 Register Reg = GR.buildGlobalVariable(
6965 ResVReg, ResType, GlobalIdent, GV, StorageClass, Init,
6966 GlobalVar->isConstant(), LnkType, MIRBuilder, true);
6967 // TODO: For AMDGCN, we pipe externally_initialized through via
6968 // HostAccessINTEL, with ReadWrite (3) access, which is we then handle during
6969 // reverse translation. We should remove this once SPIR-V gains the ability to
6970 // express the concept.
6971 if (GlobalVar->isExternallyInitialized() &&
6972 STI.getTargetTriple().getVendor() == Triple::AMD) {
6973 constexpr unsigned ReadWriteINTEL = 3u;
6974 buildOpDecorate(Reg, MIRBuilder, SPIRV::Decoration::HostAccessINTEL,
6975 {ReadWriteINTEL});
6976 MachineInstrBuilder MIB(*MF, --MIRBuilder.getInsertPt());
6977 addStringImm(GV->getName(), MIB);
6978 }
6979 return Reg.isValid();
6980}
6981
6982bool SPIRVInstructionSelector::selectLog10(Register ResVReg,
6983 SPIRVTypeInst ResType,
6984 MachineInstr &I) const {
6985 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
6986 return selectExtInst(ResVReg, ResType, I, CL::log10);
6987 }
6988
6989 // There is no log10 instruction in the GLSL Extended Instruction set, so it
6990 // is implemented as:
6991 // log10(x) = log2(x) * (1 / log2(10))
6992 // = log2(x) * 0.30103
6993
6994 MachineIRBuilder MIRBuilder(I);
6995 MachineBasicBlock &BB = *I.getParent();
6996
6997 // Build log2(x).
6998 Register VarReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6999 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
7000 .addDef(VarReg)
7001 .addUse(GR.getSPIRVTypeID(ResType))
7002 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
7003 .addImm(GL::Log2)
7004 .add(I.getOperand(1))
7005 .constrainAllUses(TII, TRI, RBI);
7006
7007 // Build 0.30103.
7008 assert(ResType->getOpcode() == SPIRV::OpTypeVector ||
7009 ResType->getOpcode() == SPIRV::OpTypeFloat);
7010 // TODO: Add matrix implementation once supported by the HLSL frontend.
7011 SPIRVTypeInst SpirvScalarType = GR.getScalarOrVectorComponentType(ResType);
7012 // The literal must match the precision of the scalar type, otherwise the
7013 // OpConstant will contain non-zero high-order bits and fail SPIR-V
7014 // validation when the type is narrower than 32 bits (e.g. half).
7015 APFloat ScaleVal(0.30103);
7016 bool LosesInfo;
7017 ScaleVal.convert(
7018 getZeroFP(GR.getTypeForSPIRVType(SpirvScalarType)).getSemantics(),
7019 APFloat::rmNearestTiesToEven, &LosesInfo);
7020 Register ScaleReg = GR.buildConstantFP(ScaleVal, MIRBuilder, SpirvScalarType);
7021
7022 // Multiply log2(x) by 0.30103 to get log10(x) result.
7023 auto Opcode = ResType->getOpcode() == SPIRV::OpTypeVector
7024 ? SPIRV::OpVectorTimesScalar
7025 : SPIRV::OpFMulS;
7026 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
7027 .addDef(ResVReg)
7028 .addUse(GR.getSPIRVTypeID(ResType))
7029 .addUse(VarReg)
7030 .addUse(ScaleReg)
7031 .constrainAllUses(TII, TRI, RBI);
7032 return true;
7033}
7034
7035bool SPIRVInstructionSelector::selectFpowi(Register ResVReg,
7036 SPIRVTypeInst ResType,
7037 MachineInstr &I) const {
7038 // On OpenCL targets, pown(gentype x, intn n) maps directly.
7039 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std))
7040 return selectExtInst(ResVReg, ResType, I, CL::pown);
7041
7042 // On GLSL (Vulkan) targets, there is no integer-exponent power instruction.
7043 // Lower as: Pow(base, OpConvertSToF(exp)).
7044 if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
7045 Register BaseReg = I.getOperand(1).getReg();
7046 Register ExpReg = I.getOperand(2).getReg();
7047 Register FloatExpReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
7048 if (!selectOpWithSrcs(FloatExpReg, ResType, I, {ExpReg},
7049 SPIRV::OpConvertSToF))
7050 return false;
7051 return selectExtInst(ResVReg, ResType, I, GL::Pow,
7052 /*setMIFlags=*/true, /*useMISrc=*/false,
7053 {BaseReg, FloatExpReg});
7054 }
7055 return false;
7056}
7057
7058bool SPIRVInstructionSelector::selectModf(Register ResVReg,
7059 SPIRVTypeInst ResType,
7060 MachineInstr &I) const {
7061 // llvm.modf has a single arg --the number to be decomposed-- and returns a
7062 // struct { restype, restype }, while OpenCLLIB::modf has two args --the
7063 // number to be decomposed and a pointer--, returns the fractional part and
7064 // the integral part is stored in the pointer argument. Therefore, we can't
7065 // use directly the OpenCLLIB::modf intrinsic. However, we can do some
7066 // scaffolding to make it work. The idea is to create an alloca instruction
7067 // to get a ptr, pass this ptr to OpenCL::modf, and then load the value
7068 // from this ptr to place it in the struct. llvm.modf returns the fractional
7069 // part as the first element of the result, and the integral part as the
7070 // second element of the result.
7071
7072 // At this point, the return type is not a struct anymore, but rather two
7073 // independent elements of SPIRVResType. We can get each independent element
7074 // from I.getDefs() or I.getOperands().
7075 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
7076 MachineIRBuilder MIRBuilder(I);
7077 SPIRVTypeInst FloatType =
7078 GR.getSPIRVTypeForVReg(I.getOperand(I.getNumExplicitDefs()).getReg());
7079 // Get pointer type for alloca variable.
7080 const SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
7081 FloatType, MIRBuilder, SPIRV::StorageClass::Function);
7082 // Create new register for the pointer type of alloca variable.
7083 Register PtrTyReg =
7084 MIRBuilder.getMRI()->createVirtualRegister(&SPIRV::iIDRegClass);
7085 MIRBuilder.getMRI()->setType(
7086 PtrTyReg,
7087 LLT::pointer(storageClassToAddressSpace(SPIRV::StorageClass::Function),
7088 GR.getPointerSize()));
7089
7090 // Assign SPIR-V type of the pointer type of the alloca variable to the
7091 // new register.
7092 GR.assignSPIRVTypeToVReg(PtrType, PtrTyReg, MIRBuilder.getMF());
7093 MachineBasicBlock::iterator VarPos = getOpVariableMBBIt(*I.getMF());
7094 MachineBasicBlock &EntryBB = I.getMF()->front();
7095 auto AllocaMIB =
7096 BuildMI(EntryBB, VarPos, I.getDebugLoc(), TII.get(SPIRV::OpVariable))
7097 .addDef(PtrTyReg)
7098 .addUse(GR.getSPIRVTypeID(PtrType))
7099 .addImm(static_cast<uint32_t>(SPIRV::StorageClass::Function));
7100 Register Variable = AllocaMIB->getOperand(0).getReg();
7101
7102 MachineBasicBlock &BB = *I.getParent();
7103 // Create the OpenCLLIB::modf instruction.
7104 auto MIB =
7105 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
7106 .addDef(ResVReg)
7107 .addUse(GR.getSPIRVTypeID(FloatType))
7108 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::OpenCL_std))
7109 .addImm(CL::modf)
7110 .setMIFlags(I.getFlags())
7111 .add(I.getOperand(I.getNumExplicitDefs())) // Floating point value.
7112 .addUse(Variable); // Pointer to integral part.
7113 // Assign the integral part stored in the ptr to the second element of the
7114 // result.
7115 Register IntegralPartReg = I.getOperand(1).getReg();
7116 if (IntegralPartReg.isValid() && !MRI->use_nodbg_empty(IntegralPartReg)) {
7117 // Load the value from the pointer to integral part.
7118 auto LoadMIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
7119 .addDef(IntegralPartReg)
7120 .addUse(GR.getSPIRVTypeID(FloatType))
7121 .addUse(Variable);
7122 LoadMIB.constrainAllUses(TII, TRI, RBI);
7123 }
7124
7125 MIB.constrainAllUses(TII, TRI, RBI);
7126 return true;
7127 } else if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
7128 assert(false && "GLSL::Modf is deprecated.");
7129 // FIXME: GL::Modf is deprecated, use Modfstruct instead.
7130 return false;
7131 }
7132 return false;
7133}
7134
7135// Generate the instructions to load 3-element vector builtin input
7136// IDs/Indices.
7137// Like: GlobalInvocationId, LocalInvocationId, etc....
7138
7139bool SPIRVInstructionSelector::loadVec3BuiltinInputID(
7140 SPIRV::BuiltIn::BuiltIn BuiltInValue, Register ResVReg,
7141 SPIRVTypeInst ResType, MachineInstr &I) const {
7142 MachineIRBuilder MIRBuilder(I);
7143 const SPIRVTypeInst Vec3Ty =
7144 GR.getOrCreateSPIRVVectorType(ResType, 3, MIRBuilder, false);
7145 const SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
7146 Vec3Ty, MIRBuilder, SPIRV::StorageClass::Input);
7147
7148 // Create new register for the input ID builtin variable.
7149 Register NewRegister =
7150 MIRBuilder.getMRI()->createVirtualRegister(&SPIRV::iIDRegClass);
7151 MIRBuilder.getMRI()->setType(NewRegister, LLT::pointer(0, 64));
7152 GR.assignSPIRVTypeToVReg(PtrType, NewRegister, MIRBuilder.getMF());
7153
7154 // Build global variable with the necessary decorations for the input ID
7155 // builtin variable.
7156 Register Variable = GR.buildGlobalVariable(
7157 NewRegister, PtrType, getLinkStringForBuiltIn(BuiltInValue), nullptr,
7158 SPIRV::StorageClass::Input, nullptr, true, std::nullopt, MIRBuilder,
7159 false);
7160
7161 // Create new register for loading value.
7162 MachineRegisterInfo *MRI = MIRBuilder.getMRI();
7163 Register LoadedRegister = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
7164 MIRBuilder.getMRI()->setType(LoadedRegister, LLT::pointer(0, 64));
7165 GR.assignSPIRVTypeToVReg(Vec3Ty, LoadedRegister, MIRBuilder.getMF());
7166
7167 // Load v3uint value from the global variable.
7168 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
7169 .addDef(LoadedRegister)
7170 .addUse(GR.getSPIRVTypeID(Vec3Ty))
7171 .addUse(Variable);
7172
7173 // Get the input ID index. Expecting operand is a constant immediate value,
7174 // wrapped in a type assignment.
7175 assert(I.getOperand(2).isReg());
7176 const uint32_t ThreadId = foldImm(I.getOperand(2), MRI);
7177
7178 // Extract the input ID from the loaded vector value.
7179 MachineBasicBlock &BB = *I.getParent();
7180 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
7181 .addDef(ResVReg)
7182 .addUse(GR.getSPIRVTypeID(ResType))
7183 .addUse(LoadedRegister)
7184 .addImm(ThreadId);
7185 MIB.constrainAllUses(TII, TRI, RBI);
7186 return true;
7187}
7188
7189// Generate the instructions to load 32-bit integer builtin input IDs/Indices.
7190// Like LocalInvocationIndex
7191bool SPIRVInstructionSelector::loadBuiltinInputID(
7192 SPIRV::BuiltIn::BuiltIn BuiltInValue, Register ResVReg,
7193 SPIRVTypeInst ResType, MachineInstr &I) const {
7194 MachineIRBuilder MIRBuilder(I);
7195 const SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
7196 ResType, MIRBuilder, SPIRV::StorageClass::Input);
7197
7198 // Create new register for the input ID builtin variable.
7199 Register NewRegister =
7200 MIRBuilder.getMRI()->createVirtualRegister(GR.getRegClass(PtrType));
7201 MIRBuilder.getMRI()->setType(
7202 NewRegister,
7203 LLT::pointer(storageClassToAddressSpace(SPIRV::StorageClass::Input),
7204 GR.getPointerSize()));
7205 GR.assignSPIRVTypeToVReg(PtrType, NewRegister, MIRBuilder.getMF());
7206
7207 // Build global variable with the necessary decorations for the input ID
7208 // builtin variable.
7209 Register Variable = GR.buildGlobalVariable(
7210 NewRegister, PtrType, getLinkStringForBuiltIn(BuiltInValue), nullptr,
7211 SPIRV::StorageClass::Input, nullptr, true, std::nullopt, MIRBuilder,
7212 false);
7213
7214 // Load uint value from the global variable.
7215 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
7216 .addDef(ResVReg)
7217 .addUse(GR.getSPIRVTypeID(ResType))
7218 .addUse(Variable);
7219
7220 MIB.constrainAllUses(TII, TRI, RBI);
7221 return true;
7222}
7223
7224SPIRVTypeInst SPIRVInstructionSelector::widenTypeToVec4(SPIRVTypeInst Type,
7225 MachineInstr &I) const {
7226 MachineIRBuilder MIRBuilder(I);
7227 if (Type->getOpcode() != SPIRV::OpTypeVector)
7228 return GR.getOrCreateSPIRVVectorType(Type, 4, MIRBuilder, false);
7229
7230 if (GR.getScalarOrVectorComponentCount(Type) == 4)
7231 return Type;
7232
7233 SPIRVTypeInst ScalarType = GR.getScalarOrVectorComponentType(Type);
7234 return GR.getOrCreateSPIRVVectorType(ScalarType, 4, MIRBuilder, false);
7235}
7236
7237bool SPIRVInstructionSelector::loadHandleBeforePosition(
7238 Register &HandleReg, SPIRVTypeInst ResType, GIntrinsic &HandleDef,
7239 MachineInstr &Pos) const {
7240
7241 assert(HandleDef.getIntrinsicID() ==
7242 Intrinsic::spv_resource_handlefrombinding);
7243 uint32_t Set = foldImm(HandleDef.getOperand(2), MRI);
7244 uint32_t Binding = foldImm(HandleDef.getOperand(3), MRI);
7245 uint32_t ArraySize = foldImm(HandleDef.getOperand(4), MRI);
7246 Register IndexReg = HandleDef.getOperand(5).getReg();
7247 std::string Name =
7248 getStringValueFromReg(HandleDef.getOperand(6).getReg(), *MRI);
7249
7250 bool IsStructuredBuffer = ResType->getOpcode() == SPIRV::OpTypePointer;
7251 MachineIRBuilder MIRBuilder(HandleDef);
7252 SPIRVTypeInst VarType = ResType;
7253 SPIRV::StorageClass::StorageClass SC = SPIRV::StorageClass::UniformConstant;
7254
7255 if (IsStructuredBuffer) {
7256 VarType = GR.getPointeeType(ResType);
7257 SC = GR.getPointerStorageClass(ResType);
7258 }
7259
7260 if (ResType->getOpcode() == SPIRV::OpTypeImage && ArraySize == 0)
7261 MIRBuilder.buildInstr(SPIRV::OpCapability)
7262 .addImm(SPIRV::Capability::RuntimeDescriptorArrayEXT);
7263
7264 Register VarReg =
7265 buildPointerToResource(SPIRVTypeInst(VarType), SC, Set, Binding,
7266 ArraySize, IndexReg, Name, MIRBuilder);
7267
7268 // The handle for the buffer is the pointer to the resource. For an image, the
7269 // handle is the image object. So images get an extra load.
7270 uint32_t LoadOpcode =
7271 IsStructuredBuffer ? SPIRV::OpCopyObject : SPIRV::OpLoad;
7272 GR.assignSPIRVTypeToVReg(ResType, HandleReg, *Pos.getMF());
7273 BuildMI(*Pos.getParent(), Pos, HandleDef.getDebugLoc(), TII.get(LoadOpcode))
7274 .addDef(HandleReg)
7275 .addUse(GR.getSPIRVTypeID(ResType))
7276 .addUse(VarReg)
7277 .constrainAllUses(TII, TRI, RBI);
7278 return true;
7279}
7280
7281bool SPIRVInstructionSelector::errorIfInstrOutsideShader(
7282 MachineInstr &I) const {
7283 if (!STI.isShader())
7284 return diagnoseUnsupported(
7285 I, "this instruction is only supported in shaders.");
7286 return true;
7287}
7288
7289namespace llvm {
7290InstructionSelector *
7291createSPIRVInstructionSelector(const SPIRVTargetMachine &TM,
7292 const SPIRVSubtarget &Subtarget,
7293 const RegisterBankInfo &RBI) {
7294 return new SPIRVInstructionSelector(TM, Subtarget, RBI);
7295}
7296} // namespace llvm
UseMI
MachineInstrBuilder & UseMI
Definition AArch64ExpandPseudoInsts.cpp:127
GET_GLOBALISEL_PREDICATES_INIT
#define GET_GLOBALISEL_PREDICATES_INIT
GET_GLOBALISEL_TEMPORARIES_INIT
#define GET_GLOBALISEL_TEMPORARIES_INIT
Generic
@ Generic
Definition AArch64MCAsmInfo.cpp:24
assert
assert(UImm &&(UImm !=~static_cast< T >(0)) &&"Invalid immediate!")
APFloat.h
This file declares a class to represent arbitrary precision floating point values and provide a varie...
selectUnmergeValues
static bool selectUnmergeValues(MachineInstrBuilder &MIB, const ARMBaseInstrInfo &TII, MachineRegisterInfo &MRI, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI)
Definition ARMInstructionSelector.cpp:264
MBB
MachineBasicBlock & MBB
Definition ARMSLSHardening.cpp:71
DL
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
Definition ARMSLSHardening.cpp:73
SwapBits
static uint8_t SwapBits(uint8_t Val)
Definition BPFMCCodeEmitter.cpp:122
true
basic Basic Alias true
Definition BasicAliasAnalysis.cpp:2073
X
#define X(NUM, ENUM, NAME)
Definition ELF.h:853
E
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
Binding
DXIL Resource Implicit Binding
Definition DXILResourceImplicitBinding.cpp:185
DEBUG_TYPE
#define DEBUG_TYPE
Definition GenericCycleImpl.h:31
GenericMachineInstrs.h
Declares convenience wrapper classes for interpreting MachineInstr instances as specific generic oper...
TII
const HexagonInstrInfo * TII
Definition HexagonCopyToCombine.cpp:118
MI
IRTranslator LLVM IR MI
Definition IRTranslator.cpp:110
LLVMIntType
LLVMTypeRef LLVMIntType(unsigned NumBits)
Definition Core.cpp:729
NumOps
const size_t AbstractManglingParser< Derived, Alloc >::NumOps
Definition ItaniumDemangle.h:3473
Direction
Loop::LoopBounds::Direction Direction
Definition LoopInfo.cpp:253
F
#define F(x, y, z)
Definition MD5.cpp:54
I
#define I(x, y, z)
Definition MD5.cpp:57
Reg
Register Reg
Definition MachineSink.cpp:2126
TRI
Register const TargetRegisterInfo * TRI
Definition MachineSink.cpp:2127
Register
Promote Memory to Register
Definition Mem2Reg.cpp:110
T
#define T
Definition Mips16ISelLowering.cpp:282
T1
#define T1
Definition Mips16ISelLowering.cpp:281
OpIdx
MachineInstr unsigned OpIdx
Definition NVPTXPrologEpilogPass.cpp:56
High
uint64_t High
Definition NVVMIntrRange.cpp:46
II
uint64_t IntrinsicInst * II
Definition NVVMIntrRange.cpp:46
getName
static StringRef getName(Value *V)
Definition ProvenanceAnalysisEvaluator.cpp:20
getFCmpOpcode
static unsigned getFCmpOpcode(CmpInst::Predicate Pred, unsigned Size)
Definition RISCVInstructionSelector.cpp:1851
isConcreteSPIRVType
static bool isConcreteSPIRVType(SPIRVTypeInst Ty, const SPIRVGlobalRegistry &GR)
Definition SPIRVInstructionSelector.cpp:6706
getOneFP
static APFloat getOneFP(const Type *LLVMFloatTy)
Definition SPIRVInstructionSelector.cpp:2989
isUSMStorageClass
static bool isUSMStorageClass(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVInstructionSelector.cpp:2667
isASCastInGVar
static bool isASCastInGVar(MachineRegisterInfo *MRI, Register ResVReg)
Definition SPIRVInstructionSelector.cpp:2678
mayApplyGenericSelection
static bool mayApplyGenericSelection(unsigned Opcode)
Definition SPIRVInstructionSelector.cpp:975
getZeroFP
static APFloat getZeroFP(const Type *LLVMFloatTy)
Definition SPIRVInstructionSelector.cpp:2975
ExtInstList
std::vector< std::pair< SPIRV::InstructionSet::InstructionSet, uint32_t > > ExtInstList
Definition SPIRVInstructionSelector.cpp:46
intrinsicHasSideEffects
static bool intrinsicHasSideEffects(Intrinsic::ID ID)
Definition SPIRVInstructionSelector.cpp:686
getBoolCmpOpcode
static unsigned getBoolCmpOpcode(unsigned PredNum)
Definition SPIRVInstructionSelector.cpp:2963
getICmpOpcode
static unsigned getICmpOpcode(unsigned PredNum)
Definition SPIRVInstructionSelector.cpp:2923
isOpcodeWithNoSideEffects
static bool isOpcodeWithNoSideEffects(unsigned Opcode)
Definition SPIRVInstructionSelector.cpp:755
addMemoryOperands
static void addMemoryOperands(MachineMemOperand *MemOp, MachineInstrBuilder &MIB, MachineIRBuilder &MIRBuilder, SPIRVGlobalRegistry &GR)
Definition SPIRVInstructionSelector.cpp:1859
isConstReg
static bool isConstReg(MachineRegisterInfo *MRI, MachineInstr *OpDef)
Definition SPIRVInstructionSelector.cpp:617
getPtrCmpOpcode
static unsigned getPtrCmpOpcode(unsigned Pred)
Definition SPIRVInstructionSelector.cpp:2951
isDead
bool isDead(const MachineInstr &MI, const MachineRegisterInfo &MRI)
Definition SPIRVInstructionSelector.cpp:789
SPIRV
spirv structurize SPIRV
Definition SPIRVStructurizer.cpp:1182
BaseType
BaseType
A given derived pointer can have multiple base pointers through phi/selects.
Definition SafepointIRVerifier.cpp:314
StringExtras.h
This file contains some functions that are useful when dealing with strings.
LLVM_DEBUG
#define LLVM_DEBUG(...)
Definition Debug.h:119
Y
static TableGen::Emitter::Opt Y("gen-skeleton-entry", EmitSkeleton, "Generate example skeleton entry")
CallbackFunction
static ManagedStatic< cl::opt< FnT >, OptCreatorT > CallbackFunction
Definition TableGenBackend.cpp:53
Mul
BinaryOperator * Mul
Definition X86PartialReduction.cpp:75
llvm::APFloatBase::IEEEsingle
static const fltSemantics & IEEEsingle()
Definition APFloat.h:297
llvm::APFloatBase::IEEEdouble
static const fltSemantics & IEEEdouble()
Definition APFloat.h:298
llvm::APFloatBase::IEEEhalf
static const fltSemantics & IEEEhalf()
Definition APFloat.h:295
llvm::APFloat::getSemantics
const fltSemantics & getSemantics() const
Definition APFloat.h:1547
llvm::APFloat::getOne
static APFloat getOne(const fltSemantics &Sem, bool Negative=false)
Factory for Positive and Negative One.
Definition APFloat.h:1148
llvm::APFloat::getZero
static APFloat getZero(const fltSemantics &Sem, bool Negative=false)
Factory for Positive and Negative Zero.
Definition APFloat.h:1139
llvm::APInt::getAllOnes
static APInt getAllOnes(unsigned numBits)
Return an APInt of a specified width with all bits set.
Definition APInt.h:235
llvm::ArrayRef
Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition ArrayRef.h:40
llvm::BlockFrequencyInfo
BlockFrequencyInfo pass uses BlockFrequencyInfoImpl implementation to estimate IR basic block frequen...
Definition BlockFrequencyInfo.h:38
llvm::CmpInst::Predicate
Predicate
This enumeration lists the possible predicates for CmpInst subclasses.
Definition InstrTypes.h:740
llvm::CmpInst::FCMP_OEQ
@ FCMP_OEQ
0 0 0 1 True if ordered and equal
Definition InstrTypes.h:743
llvm::CmpInst::ICMP_SLT
@ ICMP_SLT
signed less than
Definition InstrTypes.h:769
llvm::CmpInst::ICMP_SLE
@ ICMP_SLE
signed less or equal
Definition InstrTypes.h:770
llvm::CmpInst::FCMP_OLT
@ FCMP_OLT
0 1 0 0 True if ordered and less than
Definition InstrTypes.h:746
llvm::CmpInst::FCMP_ULE
@ FCMP_ULE
1 1 0 1 True if unordered, less than, or equal
Definition InstrTypes.h:755
llvm::CmpInst::FCMP_OGT
@ FCMP_OGT
0 0 1 0 True if ordered and greater than
Definition InstrTypes.h:744
llvm::CmpInst::FCMP_OGE
@ FCMP_OGE
0 0 1 1 True if ordered and greater than or equal
Definition InstrTypes.h:745
llvm::CmpInst::ICMP_UGE
@ ICMP_UGE
unsigned greater or equal
Definition InstrTypes.h:764
llvm::CmpInst::ICMP_UGT
@ ICMP_UGT
unsigned greater than
Definition InstrTypes.h:763
llvm::CmpInst::ICMP_SGT
@ ICMP_SGT
signed greater than
Definition InstrTypes.h:767
llvm::CmpInst::FCMP_ULT
@ FCMP_ULT
1 1 0 0 True if unordered or less than
Definition InstrTypes.h:754
llvm::CmpInst::FCMP_ONE
@ FCMP_ONE
0 1 1 0 True if ordered and operands are unequal
Definition InstrTypes.h:748
llvm::CmpInst::FCMP_UEQ
@ FCMP_UEQ
1 0 0 1 True if unordered or equal
Definition InstrTypes.h:751
llvm::CmpInst::ICMP_ULT
@ ICMP_ULT
unsigned less than
Definition InstrTypes.h:765
llvm::CmpInst::FCMP_UGT
@ FCMP_UGT
1 0 1 0 True if unordered or greater than
Definition InstrTypes.h:752
llvm::CmpInst::FCMP_OLE
@ FCMP_OLE
0 1 0 1 True if ordered and less than or equal
Definition InstrTypes.h:747
llvm::CmpInst::FCMP_ORD
@ FCMP_ORD
0 1 1 1 True if ordered (no nans)
Definition InstrTypes.h:749
llvm::CmpInst::ICMP_NE
@ ICMP_NE
not equal
Definition InstrTypes.h:762
llvm::CmpInst::ICMP_SGE
@ ICMP_SGE
signed greater or equal
Definition InstrTypes.h:768
llvm::CmpInst::FCMP_UNE
@ FCMP_UNE
1 1 1 0 True if unordered or not equal
Definition InstrTypes.h:756
llvm::CmpInst::ICMP_ULE
@ ICMP_ULE
unsigned less or equal
Definition InstrTypes.h:766
llvm::CmpInst::FCMP_UGE
@ FCMP_UGE
1 0 1 1 True if unordered, greater than, or equal
Definition InstrTypes.h:753
llvm::CmpInst::FCMP_UNO
@ FCMP_UNO
1 0 0 0 True if unordered: isnan(X) | isnan(Y)
Definition InstrTypes.h:750
llvm::Constant::getNullValue
static LLVM_ABI Constant * getNullValue(Type *Ty)
Constructor to create a '0' constant of arbitrary type.
Definition Constants.cpp:363
llvm::DenseMapBase::size
unsigned size() const
Definition DenseMap.h:174
llvm::Function::getContext
LLVMContext & getContext() const
getContext - Return a reference to the LLVMContext associated with this function.
Definition Function.cpp:354
llvm::GIntrinsic
Represents a call to an intrinsic.
Definition GenericMachineInstrs.h:563
llvm::GIntrinsic::getIntrinsicID
Intrinsic::ID getIntrinsicID() const
Definition GenericMachineInstrs.h:565
llvm::GlobalValue::getAddressSpace
unsigned getAddressSpace() const
Definition GlobalValue.h:207
llvm::GlobalValue::getParent
Module * getParent()
Get the module that this global value is contained inside of...
Definition GlobalValue.h:663
llvm::GlobalValue::InternalLinkage
@ InternalLinkage
Rename collisions when linking (static functions).
Definition GlobalValue.h:60
llvm::IntegerType::get
static LLVM_ABI IntegerType * get(LLVMContext &C, unsigned NumBits)
This static method is the primary way of constructing an IntegerType.
Definition Type.cpp:350
llvm::LLT::scalar
static constexpr LLT scalar(unsigned SizeInBits)
Get a low-level scalar or aggregate "bag of bits".
Definition LowLevelType.h:88
llvm::LLT::isValid
constexpr bool isValid() const
Definition LowLevelType.h:262
llvm::LLT::getNumElements
constexpr uint16_t getNumElements() const
Returns the number of elements in a vector LLT.
Definition LowLevelType.h:350
llvm::LLT::isVector
constexpr bool isVector() const
Definition LowLevelType.h:289
llvm::LLT::pointer
static constexpr LLT pointer(unsigned AddressSpace, unsigned SizeInBits)
Get a low-level pointer in the given address space.
Definition LowLevelType.h:115
llvm::LLT::fixed_vector
static constexpr LLT fixed_vector(unsigned NumElements, unsigned ScalarSizeInBits)
Get a low-level fixed-width vector of some number of elements and element width.
Definition LowLevelType.h:203
llvm::MachineBasicBlock::getNumber
int getNumber() const
MachineBasicBlocks are uniquely numbered at the function level, unless they're not in a MachineFuncti...
Definition MachineBasicBlock.h:1268
llvm::MachineBasicBlock::getFirstNonPHI
LLVM_ABI iterator getFirstNonPHI()
Returns a pointer to the first instruction in this block that is not a PHINode instruction.
Definition MachineBasicBlock.cpp:202
llvm::MachineBasicBlock::getParent
const MachineFunction * getParent() const
Return the MachineFunction containing this basic block.
Definition MachineBasicBlock.h:324
llvm::MachineBasicBlock::iterator
MachineInstrBundleIterator< MachineInstr > iterator
Definition MachineBasicBlock.h:342
llvm::MachineFunction::getRegInfo
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
Definition MachineFunction.h:798
llvm::MachineFunction::getFunction
Function & getFunction()
Return the LLVM function that this machine code represents.
Definition MachineFunction.h:749
llvm::MachineIRBuilder
Helper class to build MachineInstr.
Definition MachineIRBuilder.h:237
llvm::MachineIRBuilder::getInsertPt
MachineBasicBlock::iterator getInsertPt()
Current insertion point for new instructions.
Definition MachineIRBuilder.h:335
llvm::MachineIRBuilder::buildInstr
MachineInstrBuilder buildInstr(unsigned Opcode)
Build and insert <empty> = Opcode <empty>.
Definition MachineIRBuilder.h:423
llvm::MachineIRBuilder::getMF
MachineFunction & getMF()
Getter for the function we currently build.
Definition MachineIRBuilder.h:289
llvm::MachineIRBuilder::getMRI
MachineRegisterInfo * getMRI()
Getter for MRI.
Definition MachineIRBuilder.h:311
llvm::MachineInstrBuilder::constrainAllUses
void constrainAllUses(const TargetInstrInfo &TII, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI) const
Definition MachineInstrBuilder.h:441
llvm::MachineInstrBuilder::addUse
const MachineInstrBuilder & addUse(Register RegNo, RegState Flags={}, unsigned SubReg=0) const
Add a virtual register use operand.
Definition MachineInstrBuilder.h:225
llvm::MachineInstrBuilder::addReg
const MachineInstrBuilder & addReg(Register RegNo, RegState Flags={}, unsigned SubReg=0) const
Add a new virtual register operand.
Definition MachineInstrBuilder.h:199
llvm::MachineInstrBuilder::addImm
const MachineInstrBuilder & addImm(int64_t Val) const
Add a new immediate operand.
Definition MachineInstrBuilder.h:233
llvm::MachineInstrBuilder::add
const MachineInstrBuilder & add(const MachineOperand &MO) const
Definition MachineInstrBuilder.h:326
llvm::MachineInstrBuilder::addMBB
const MachineInstrBuilder & addMBB(MachineBasicBlock *MBB, unsigned TargetFlags=0) const
Definition MachineInstrBuilder.h:248
llvm::MachineInstrBuilder::addDef
const MachineInstrBuilder & addDef(Register RegNo, RegState Flags={}, unsigned SubReg=0) const
Add a virtual register definition operand.
Definition MachineInstrBuilder.h:218
llvm::MachineInstrBuilder::setMIFlags
const MachineInstrBuilder & setMIFlags(unsigned Flags) const
Definition MachineInstrBuilder.h:379
llvm::MachineInstrBuilder::getInstr
MachineInstr * getInstr() const
If conversion operators fail, use this method to get the MachineInstr explicitly.
Definition MachineInstrBuilder.h:191
llvm::MachineInstr
Representation of each machine instruction.
Definition MachineInstr.h:73
llvm::MachineInstr::getOpcode
unsigned getOpcode() const
Returns the opcode of this MachineInstr.
Definition MachineInstr.h:601
llvm::MachineInstr::getParent
const MachineBasicBlock * getParent() const
Definition MachineInstr.h:373
llvm::MachineInstr::getNumOperands
unsigned getNumOperands() const
Retuns the total number of operands.
Definition MachineInstr.h:604
llvm::MachineInstr::getNumExplicitOperands
LLVM_ABI unsigned getNumExplicitOperands() const
Returns the number of non-implicit operands.
Definition MachineInstr.cpp:847
llvm::MachineInstr::getNumExplicitDefs
LLVM_ABI unsigned getNumExplicitDefs() const
Returns the number of non-implicit definitions.
Definition MachineInstr.cpp:865
llvm::MachineInstr::emitGenericError
LLVM_ABI void emitGenericError(const Twine &ErrMsg) const
Definition MachineInstr.cpp:2369
llvm::MachineInstr::getMF
LLVM_ABI const MachineFunction * getMF() const
Return the function that contains the basic block that this instruction belongs to.
Definition MachineInstr.cpp:782
llvm::MachineInstr::getDebugLoc
const DebugLoc & getDebugLoc() const
Returns the debug location id of this MachineInstr.
Definition MachineInstr.h:525
llvm::MachineInstr::getOperand
const MachineOperand & getOperand(unsigned i) const
Definition MachineInstr.h:609
llvm::MachineMemOperand
A description of a memory reference used in the backend.
Definition MachineMemOperand.h:130
llvm::MachineMemOperand::MOVolatile
@ MOVolatile
The memory access is volatile.
Definition MachineMemOperand.h:141
llvm::MachineMemOperand::MONonTemporal
@ MONonTemporal
The memory access is non-temporal.
Definition MachineMemOperand.h:143
llvm::MachineOperand::getImm
int64_t getImm() const
Definition MachineOperand.h:560
llvm::MachineOperand::isReg
bool isReg() const
isReg - Tests if this is a MO_Register operand.
Definition MachineOperand.h:331
llvm::MachineOperand::getMBB
MachineBasicBlock * getMBB() const
Definition MachineOperand.h:575
llvm::MachineOperand::getReg
Register getReg() const
getReg - Returns the register number.
Definition MachineOperand.h:372
llvm::MachineRegisterInfo
MachineRegisterInfo - Keep track of information for virtual and physical registers,...
Definition MachineRegisterInfo.h:53
llvm::MachineRegisterInfo::use_instr_iterator
defusechain_instr_iterator< true, false, false, true > use_instr_iterator
use_instr_iterator/use_instr_begin/use_instr_end - Walk all uses of the specified register,...
Definition MachineRegisterInfo.h:490
llvm::MachineRegisterInfo::getRegClass
const TargetRegisterClass * getRegClass(Register Reg) const
Return the register class of the specified virtual register.
Definition MachineRegisterInfo.h:669
llvm::MachineRegisterInfo::getVRegDef
LLVM_ABI MachineInstr * getVRegDef(Register Reg) const
getVRegDef - Return the machine instr that defines the specified virtual register or null if none is ...
Definition MachineRegisterInfo.cpp:404
llvm::MachineRegisterInfo::use_instr_begin
use_instr_iterator use_instr_begin(Register RegNo) const
Definition MachineRegisterInfo.h:492
llvm::MachineRegisterInfo::use_nodbg_empty
bool use_nodbg_empty(Register RegNo) const
use_nodbg_empty - Return true if there are no non-Debug instructions using the specified register.
Definition MachineRegisterInfo.h:590
llvm::MachineRegisterInfo::def_instr_end
static def_instr_iterator def_instr_end()
Definition MachineRegisterInfo.h:416
llvm::MachineRegisterInfo::def_instr_iterator
defusechain_instr_iterator< false, true, false, true > def_instr_iterator
def_instr_iterator/def_instr_begin/def_instr_end - Walk all defs of the specified register,...
Definition MachineRegisterInfo.h:411
llvm::MachineRegisterInfo::createVirtualRegister
LLVM_ABI Register createVirtualRegister(const TargetRegisterClass *RegClass, StringRef Name="")
createVirtualRegister - Create and return a new virtual register in the function with the specified r...
Definition MachineRegisterInfo.cpp:154
llvm::MachineRegisterInfo::def_instr_begin
def_instr_iterator def_instr_begin(Register RegNo) const
Definition MachineRegisterInfo.h:413
llvm::MachineRegisterInfo::getType
LLT getType(Register Reg) const
Get the low-level type of Reg or LLT{} if Reg is not a generic (target independent) virtual register.
Definition MachineRegisterInfo.h:792
llvm::MachineRegisterInfo::use_instr_end
static use_instr_iterator use_instr_end()
Definition MachineRegisterInfo.h:495
llvm::MachineRegisterInfo::use_nodbg_instructions
iterator_range< use_instr_nodbg_iterator > use_nodbg_instructions(Register Reg) const
Definition MachineRegisterInfo.h:567
llvm::MachineRegisterInfo::setType
LLVM_ABI void setType(Register VReg, LLT Ty)
Set the low-level type of VReg to Ty.
Definition MachineRegisterInfo.cpp:185
llvm::MachineRegisterInfo::getMF
const MachineFunction & getMF() const
Definition MachineRegisterInfo.h:201
llvm::MachineRegisterInfo::setRegClass
LLVM_ABI void setRegClass(Register Reg, const TargetRegisterClass *RC)
setRegClass - Set the register class of the specified virtual register.
Definition MachineRegisterInfo.cpp:58
llvm::MachineRegisterInfo::createGenericVirtualRegister
LLVM_ABI Register createGenericVirtualRegister(LLT Ty, StringRef Name="")
Create and return a new generic virtual register with low-level type Ty.
Definition MachineRegisterInfo.cpp:191
llvm::MachineRegisterInfo::getRegClassOrNull
const TargetRegisterClass * getRegClassOrNull(Register Reg) const
Return the register class of Reg, or null if Reg has not been assigned a register class yet.
Definition MachineRegisterInfo.h:686
llvm::MachineRegisterInfo::use_instructions
iterator_range< use_instr_iterator > use_instructions(Register Reg) const
Definition MachineRegisterInfo.h:500
llvm::MachineRegisterInfo::getNumVirtRegs
unsigned getNumVirtRegs() const
getNumVirtRegs - Return the number of virtual registers created.
Definition MachineRegisterInfo.h:817
llvm::MachineRegisterInfo::replaceRegWith
LLVM_ABI void replaceRegWith(Register FromReg, Register ToReg)
replaceRegWith - Replace all instances of FromReg with ToReg in the machine function.
Definition MachineRegisterInfo.cpp:386
llvm::ProfileSummaryInfo
Analysis providing profile information.
Definition ProfileSummaryInfo.h:42
llvm::RegisterBankInfo
Holds all the information related to register banks.
Definition RegisterBankInfo.h:40
llvm::Register
Wrapper class representing virtual and physical registers.
Definition Register.h:20
llvm::Register::isValid
constexpr bool isValid() const
Definition Register.h:112
llvm::Register::isPhysical
constexpr bool isPhysical() const
Return true if the specified register number is in the physical register namespace.
Definition Register.h:83
llvm::SPIRVGlobalRegistry::isScalarOrVectorSigned
bool isScalarOrVectorSigned(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.cpp:1478
llvm::SPIRVGlobalRegistry::getOrCreateOpTypeSampledImage
SPIRVTypeInst getOrCreateOpTypeSampledImage(SPIRVTypeInst ImageType, MachineIRBuilder &MIRBuilder)
Definition SPIRVGlobalRegistry.cpp:1726
llvm::SPIRVGlobalRegistry::assignSPIRVTypeToVReg
void assignSPIRVTypeToVReg(SPIRVTypeInst Type, Register VReg, const MachineFunction &MF)
Definition SPIRVGlobalRegistry.cpp:130
llvm::SPIRVGlobalRegistry::getRegClass
const TargetRegisterClass * getRegClass(SPIRVTypeInst SpvType) const
Definition SPIRVGlobalRegistry.cpp:2088
llvm::SPIRVGlobalRegistry::getOrAddMemAliasingINTELInst
MachineInstr * getOrAddMemAliasingINTELInst(MachineIRBuilder &MIRBuilder, const MDNode *AliasingListMD)
Definition SPIRVGlobalRegistry.cpp:2150
llvm::SPIRVGlobalRegistry::isAggregateType
bool isAggregateType(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.h:371
llvm::SPIRVGlobalRegistry::getScalarOrVectorBitWidth
unsigned getScalarOrVectorBitWidth(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.cpp:1449
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVIntegerType
SPIRVTypeInst getOrCreateSPIRVIntegerType(unsigned BitWidth, MachineIRBuilder &MIRBuilder)
Definition SPIRVGlobalRegistry.cpp:1856
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVVectorType
SPIRVTypeInst getOrCreateSPIRVVectorType(SPIRVTypeInst BaseType, unsigned NumElements, MachineIRBuilder &MIRBuilder, bool EmitIR)
Definition SPIRVGlobalRegistry.cpp:1955
llvm::SPIRVGlobalRegistry::buildGlobalVariable
Register buildGlobalVariable(Register Reg, SPIRVTypeInst BaseType, StringRef Name, const GlobalValue *GV, SPIRV::StorageClass::StorageClass Storage, const MachineInstr *Init, bool IsConst, const std::optional< SPIRV::LinkageType::LinkageType > &LinkageType, MachineIRBuilder &MIRBuilder, bool IsInstSelector)
Definition SPIRVGlobalRegistry.cpp:805
llvm::SPIRVGlobalRegistry::getResultType
SPIRVTypeInst getResultType(Register VReg, MachineFunction *MF=nullptr)
Definition SPIRVGlobalRegistry.cpp:1332
llvm::SPIRVGlobalRegistry::getScalarOrVectorComponentCount
unsigned getScalarOrVectorComponentCount(Register VReg) const
Definition SPIRVGlobalRegistry.cpp:1422
llvm::SPIRVGlobalRegistry::getTypeForSPIRVType
const Type * getTypeForSPIRVType(SPIRVTypeInst Ty) const
Definition SPIRVGlobalRegistry.h:324
llvm::SPIRVGlobalRegistry::isBitcastCompatible
bool isBitcastCompatible(SPIRVTypeInst Type1, SPIRVTypeInst Type2) const
Definition SPIRVGlobalRegistry.cpp:1494
llvm::SPIRVGlobalRegistry::getOrCreateConstFP
Register getOrCreateConstFP(APFloat Val, MachineInstr &I, SPIRVTypeInst SpvType, const SPIRVInstrInfo &TII, bool ZeroAsNull=true)
Definition SPIRVGlobalRegistry.cpp:359
llvm::SPIRVGlobalRegistry::getRegType
LLT getRegType(SPIRVTypeInst SpvType) const
Definition SPIRVGlobalRegistry.cpp:2114
llvm::SPIRVGlobalRegistry::invalidateMachineInstr
void invalidateMachineInstr(MachineInstr *MI)
Definition SPIRVGlobalRegistry.cpp:233
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVBoolType
SPIRVTypeInst getOrCreateSPIRVBoolType(MachineIRBuilder &MIRBuilder, bool EmitIR)
Definition SPIRVGlobalRegistry.cpp:1930
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVPointerType
SPIRVTypeInst getOrCreateSPIRVPointerType(const Type *BaseType, MachineIRBuilder &MIRBuilder, SPIRV::StorageClass::StorageClass SC)
Definition SPIRVGlobalRegistry.cpp:1996
llvm::SPIRVGlobalRegistry::isScalarOfType
bool isScalarOfType(Register VReg, unsigned TypeOpcode) const
Definition SPIRVGlobalRegistry.cpp:1387
llvm::SPIRVGlobalRegistry::getSPIRVTypeID
Register getSPIRVTypeID(SPIRVTypeInst SpirvType) const
Definition SPIRVGlobalRegistry.cpp:1159
llvm::SPIRVGlobalRegistry::getOrCreateConstInt
Register getOrCreateConstInt(uint64_t Val, MachineInstr &I, SPIRVTypeInst SpvType, const SPIRVInstrInfo &TII, bool ZeroAsNull=true)
Definition SPIRVGlobalRegistry.cpp:412
llvm::SPIRVGlobalRegistry::getOrCreateConstIntArray
Register getOrCreateConstIntArray(uint64_t Val, size_t Num, MachineInstr &I, SPIRVTypeInst SpvType, const SPIRVInstrInfo &TII)
Definition SPIRVGlobalRegistry.cpp:671
llvm::SPIRVGlobalRegistry::findValueAttrs
bool findValueAttrs(const MachineInstr *Key, Type *&Ty, StringRef &Name)
Definition SPIRVGlobalRegistry.h:176
llvm::SPIRVGlobalRegistry::retrieveScalarOrVectorIntType
SPIRVTypeInst retrieveScalarOrVectorIntType(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.cpp:1472
llvm::SPIRVGlobalRegistry::getOrCreateGlobalVariableWithBinding
Register getOrCreateGlobalVariableWithBinding(SPIRVTypeInst VarType, uint32_t Set, uint32_t Binding, StringRef Name, MachineIRBuilder &MIRBuilder)
Definition SPIRVGlobalRegistry.cpp:917
llvm::SPIRVGlobalRegistry::changePointerStorageClass
SPIRVTypeInst changePointerStorageClass(SPIRVTypeInst PtrType, SPIRV::StorageClass::StorageClass SC, MachineInstr &I)
Definition SPIRVGlobalRegistry.cpp:2007
llvm::SPIRVGlobalRegistry::getOrCreateConstVector
Register getOrCreateConstVector(uint64_t Val, MachineInstr &I, SPIRVTypeInst SpvType, const SPIRVInstrInfo &TII, bool ZeroAsNull=true)
Definition SPIRVGlobalRegistry.cpp:622
llvm::SPIRVGlobalRegistry::buildConstantFP
Register buildConstantFP(APFloat Val, MachineIRBuilder &MIRBuilder, SPIRVTypeInst SpvType=nullptr)
Definition SPIRVGlobalRegistry.cpp:526
llvm::SPIRVGlobalRegistry::addGlobalObject
void addGlobalObject(const Value *V, const MachineFunction *MF, Register R)
Definition SPIRVGlobalRegistry.h:122
llvm::SPIRVGlobalRegistry::getScalarOrVectorComponentType
SPIRVTypeInst getScalarOrVectorComponentType(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.cpp:1436
llvm::SPIRVGlobalRegistry::recordFunctionPointer
void recordFunctionPointer(const MachineOperand *MO, const Function *F)
Definition SPIRVGlobalRegistry.h:259
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVFloatType
SPIRVTypeInst getOrCreateSPIRVFloatType(unsigned BitWidth, MachineInstr &I, const SPIRVInstrInfo &TII)
Definition SPIRVGlobalRegistry.cpp:1909
llvm::SPIRVGlobalRegistry::getPointeeType
SPIRVTypeInst getPointeeType(SPIRVTypeInst PtrType)
Definition SPIRVGlobalRegistry.cpp:1483
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVType
SPIRVTypeInst getOrCreateSPIRVType(const Type *Type, MachineInstr &I, SPIRV::AccessQualifier::AccessQualifier AQ, bool EmitIR)
Definition SPIRVGlobalRegistry.h:310
llvm::SPIRVGlobalRegistry::isScalarOrVectorOfType
bool isScalarOrVectorOfType(Register VReg, unsigned TypeOpcode) const
Definition SPIRVGlobalRegistry.cpp:1394
llvm::SPIRVGlobalRegistry::setCurrentFunc
MachineFunction * setCurrentFunc(MachineFunction &MF)
Definition SPIRVGlobalRegistry.h:364
llvm::SPIRVGlobalRegistry::getOrCreateConstNullPtr
Register getOrCreateConstNullPtr(MachineIRBuilder &MIRBuilder, SPIRVTypeInst SpvType)
Definition SPIRVGlobalRegistry.cpp:754
llvm::SPIRVGlobalRegistry::getSPIRVTypeForVReg
SPIRVTypeInst getSPIRVTypeForVReg(Register VReg, const MachineFunction *MF=nullptr) const
Definition SPIRVGlobalRegistry.cpp:1321
llvm::SPIRVGlobalRegistry::getDeducedGlobalValueType
Type * getDeducedGlobalValueType(const GlobalValue *Global)
Definition SPIRVGlobalRegistry.h:212
llvm::SPIRVGlobalRegistry::getOrCreateUndef
Register getOrCreateUndef(MachineInstr &I, SPIRVTypeInst SpvType, const SPIRVInstrInfo &TII)
Definition SPIRVGlobalRegistry.cpp:2054
llvm::SPIRVGlobalRegistry::getPointerStorageClass
SPIRV::StorageClass::StorageClass getPointerStorageClass(Register VReg) const
Definition SPIRVGlobalRegistry.cpp:1514
llvm::SPIRVIRMapping::erase
bool erase(const MachineInstr *MI)
Definition SPIRVIRMapping.h:211
llvm::SPIRVIRMapping::add
bool add(SPIRV::IRHandle Handle, const MachineInstr *MI)
Definition SPIRVIRMapping.h:189
llvm::SPIRVIRMapping::find
Register find(SPIRV::IRHandle Handle, const MachineFunction *MF)
Definition SPIRVIRMapping.h:235
llvm::SPIRVSubtarget::isPhysicalSPIRV
bool isPhysicalSPIRV() const
Definition SPIRVSubtarget.h:92
llvm::SPIRVSubtarget::isAtLeastSPIRVVer
bool isAtLeastSPIRVVer(VersionTuple VerToCompareTo) const
Definition SPIRVSubtarget.cpp:143
llvm::SPIRVSubtarget::canUseExtInstSet
bool canUseExtInstSet(SPIRV::InstructionSet::InstructionSet E) const
Definition SPIRVSubtarget.cpp:130
llvm::SPIRVSubtarget::isLogicalSPIRV
bool isLogicalSPIRV() const
Definition SPIRVSubtarget.h:89
llvm::SPIRVSubtarget::canUseExtension
bool canUseExtension(SPIRV::Extension::Extension E) const
Definition SPIRVSubtarget.cpp:126
llvm::SPIRVTypeInst::isTypeIntOrFloat
bool isTypeIntOrFloat() const
Definition SPIRVTypeInst.h:57
llvm::SmallPtrSetImpl::erase
bool erase(PtrType Ptr)
Remove pointer from the set.
Definition SmallPtrSet.h:402
llvm::SmallPtrSetImpl::insert
std::pair< iterator, bool > insert(PtrType Ptr)
Inserts Ptr if and only if there is no element in the container equal to Ptr.
Definition SmallPtrSet.h:387
llvm::SmallPtrSetImpl::contains
bool contains(ConstPtrType Ptr) const
Definition SmallPtrSet.h:467
llvm::SmallPtrSet
SmallPtrSet - This class implements a set which is optimized for holding SmallSize or less elements.
Definition SmallPtrSet.h:533
llvm::SmallVectorImpl::emplace_back
reference emplace_back(ArgTypes &&... Args)
Definition SmallVector.h:966
llvm::SmallVectorImpl::reserve
void reserve(size_type N)
Definition SmallVector.h:671
llvm::SmallVectorTemplateBase::push_back
void push_back(const T &Elt)
Definition SmallVector.h:423
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition SmallVector.h:1225
llvm::StringRef::size
constexpr size_t size() const
Get the string size.
Definition StringRef.h:144
llvm::StructType::get
static LLVM_ABI StructType * get(LLVMContext &Context, ArrayRef< Type * > Elements, bool isPacked=false)
This static method is the primary way to create a literal StructType.
Definition Type.cpp:479
llvm::Twine
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition Twine.h:82
llvm::Type
The instances of the Type class are immutable: once they are created, they are never changed.
Definition Type.h:46
llvm::Type::HalfTyID
@ HalfTyID
16-bit floating point type
Definition Type.h:57
llvm::Type::FloatTyID
@ FloatTyID
32-bit floating point type
Definition Type.h:59
llvm::Type::DoubleTyID
@ DoubleTyID
64-bit floating point type
Definition Type.h:60
llvm::Type::getScalarType
Type * getScalarType() const
If this is a vector type, return the element type, otherwise return 'this'.
Definition Type.h:368
llvm::Type::isStructTy
bool isStructTy() const
True if this is an instance of StructType.
Definition Type.h:276
llvm::Type::isAggregateType
bool isAggregateType() const
Return true if the type is an aggregate type.
Definition Type.h:319
llvm::Type::getTypeID
TypeID getTypeID() const
Return the type id for the type.
Definition Type.h:138
llvm::User::getOperand
Value * getOperand(unsigned i) const
Definition User.h:207
llvm::Value::hasName
bool hasName() const
Definition Value.h:261
llvm::Value::getName
LLVM_ABI StringRef getName() const
Return a constant reference to the value's name.
Definition Value.cpp:319
llvm::ilist_node_impl::getIterator
self_iterator getIterator()
Definition ilist_node.h:123
llvm::ilist_node_with_parent::getNextNode
NodeTy * getNextNode()
Get the next node, or nullptr for the list tail.
Definition ilist_node.h:348
uint32_t
uint64_t
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition ErrorHandling.h:164
llvm::AMDGPU::HSAMD::Kernel::Arg::Key::IsConst
constexpr char IsConst[]
Key for Kernel::Arg::Metadata::mIsConst.
Definition AMDGPUMetadata.h:197
llvm::BitmaskEnumDetail::Mask
constexpr std::underlying_type_t< E > Mask()
Get a bitmask with 1s in all places up to the high-order bit of E's largest value.
Definition BitmaskEnum.h:126
llvm::CallingConv::ID
unsigned ID
LLVM IR allows to use arbitrary numbers as calling convention identifiers.
Definition CallingConv.h:24
llvm::dwarf_linker::DebugSectionKind::DebugLoc
@ DebugLoc
Definition DWARFLinkerBase.h:34
llvm::ms_demangle::QualifierMangleMode::Result
@ Result
Definition MicrosoftDemangle.h:132
llvm::rdf::Def
NodeAddr< DefNode * > Def
Definition RDFGraph.h:384
llvm::rdf::Instr
NodeAddr< InstrNode * > Instr
Definition RDFGraph.h:389
llvm::rdf::Use
NodeAddr< UseNode * > Use
Definition RDFGraph.h:385
llvm::rdf::Func
NodeAddr< FuncNode * > Func
Definition RDFGraph.h:393
llvm::sframe::BaseReg
BaseReg
Stack frame base register. Bit 0 of FREInfo.Info.
Definition SFrame.h:77
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition FunctionInfo.h:25
llvm::buildOpName
void buildOpName(Register Target, const StringRef &Name, MachineIRBuilder &MIRBuilder)
Definition SPIRVUtils.cpp:225
llvm::ThreadPriority::Low
@ Low
Lower the current thread's priority such that it does not affect foreground tasks significantly.
Definition Threading.h:280
llvm::Offset
@ Offset
Definition DWP.cpp:558
llvm::Value
FunctionAddr VTableAddr Value
Definition InstrProf.h:137
llvm::all_of
bool all_of(R &&range, UnaryPredicate P)
Provide wrappers to std::all_of which take ranges instead of having to pass begin/end explicitly.
Definition STLExtras.h:1738
llvm::getOpVariableMBBIt
MachineBasicBlock::iterator getOpVariableMBBIt(MachineFunction &MF)
Definition SPIRVUtils.cpp:335
llvm::getIConstValSext
int64_t getIConstValSext(Register ConstReg, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:505
llvm::BuildMI
MachineInstrBuilder BuildMI(MachineFunction &MF, const MIMetadata &MIMD, const MCInstrDesc &MCID)
Builder interface. Specify how to create the initial instruction itself.
Definition MachineInstrBuilder.h:449
llvm::isTypeFoldingSupported
bool isTypeFoldingSupported(unsigned Opcode)
Definition SPIRVUtils.cpp:1138
llvm::dyn_cast
decltype(auto) dyn_cast(const From &Val)
dyn_cast<X> - Return the argument parameter cast to the specified type.
Definition Casting.h:643
llvm::getDef
MachineInstr * getDef(const MachineOperand &MO, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1150
llvm::Int32Ty
FunctionAddr VTableAddr uintptr_t uintptr_t Int32Ty
Definition InstrProf.h:328
llvm::addNumImm
void addNumImm(const APInt &Imm, MachineInstrBuilder &MIB)
Definition SPIRVUtils.cpp:194
llvm::salvageDebugInfo
LLVM_ABI void salvageDebugInfo(const MachineRegisterInfo &MRI, MachineInstr &MI)
Assuming the instruction MI is going to be deleted, attempt to salvage debug users of MI by writing t...
Definition Utils.cpp:1690
llvm::constrainSelectedInstRegOperands
LLVM_ABI void constrainSelectedInstRegOperands(MachineInstr &I, const TargetInstrInfo &TII, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI)
Mutate the newly-selected instruction I to constrain its (possibly generic) virtual register operands...
Definition Utils.cpp:159
llvm::isPreISelGenericOpcode
bool isPreISelGenericOpcode(unsigned Opcode)
Check whether the given Opcode is a generic opcode that is not supposed to appear after ISel.
Definition TargetOpcodes.h:30
llvm::createVirtualRegister
Register createVirtualRegister(SPIRVTypeInst SpvType, SPIRVGlobalRegistry *GR, MachineRegisterInfo *MRI, const MachineFunction &MF)
Definition SPIRVUtils.cpp:964
llvm::getArrayComponentCount
unsigned getArrayComponentCount(const MachineRegisterInfo *MRI, const MachineInstr *ResType)
Definition SPIRVUtils.cpp:1175
llvm::buildOpDecorate
void buildOpDecorate(Register Reg, MachineIRBuilder &MIRBuilder, SPIRV::Decoration::Decoration Dec, ArrayRef< uint32_t > DecArgs, StringRef StrImm)
Definition SPIRVUtils.cpp:252
llvm::isNullOrNullSplat
LLVM_ABI bool isNullOrNullSplat(const MachineInstr &MI, const MachineRegisterInfo &MRI, bool AllowUndefs=false)
Return true if the value is a constant 0 integer or a splatted vector of a constant 0 integer (with n...
Definition Utils.cpp:1554
llvm::getIConstVal
uint64_t getIConstVal(Register ConstReg, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:499
llvm::createContinuedInstructions
SmallVector< MachineInstr *, 4 > createContinuedInstructions(MachineIRBuilder &MIRBuilder, unsigned Opcode, unsigned MinWC, unsigned ContinuedOpcode, ArrayRef< Register > Args, Register ReturnRegister, Register TypeID)
Definition SPIRVUtils.cpp:1029
llvm::getMemSemanticsForStorageClass
SPIRV::MemorySemantics::MemorySemantics getMemSemanticsForStorageClass(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVUtils.cpp:414
llvm::storageClassToAddressSpace
constexpr unsigned storageClassToAddressSpace(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVUtils.h:247
llvm::any_of
bool any_of(R &&range, UnaryPredicate P)
Provide wrappers to std::any_of which take ranges instead of having to pass begin/end explicitly.
Definition STLExtras.h:1745
llvm::getImm
MachineInstr * getImm(const MachineOperand &MO, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1156
llvm::isPowerOf2_32
constexpr bool isPowerOf2_32(uint32_t Value)
Return true if the argument is a power of two > 0.
Definition MathExtras.h:279
llvm::toTypedPointer
Type * toTypedPointer(Type *Ty)
Definition SPIRVUtils.h:473
llvm::dbgs
LLVM_ABI raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition Debug.cpp:209
llvm::report_fatal_error
LLVM_ABI void report_fatal_error(Error Err, bool gen_crash_diag=true)
Definition Error.cpp:163
llvm::isGenericCastablePtr
constexpr bool isGenericCastablePtr(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVUtils.h:231
llvm::SmallVector
class LLVM_GSL_OWNER SmallVector
Forward declaration of SmallVector so that calculateSmallVectorDefaultInlinedElements can reference s...
Definition SmallVector.h:1151
llvm::passCopy
MachineInstr * passCopy(MachineInstr *Def, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1143
llvm::isa
bool isa(const From &Val)
isa<X> - Return true if the parameter to the template is an instance of one of the template type argu...
Definition Casting.h:547
llvm::getSpirvLinkageTypeFor
std::optional< SPIRV::LinkageType::LinkageType > getSpirvLinkageTypeFor(const SPIRVSubtarget &ST, const GlobalValue &GV)
Definition SPIRVUtils.cpp:1250
llvm::errs
LLVM_ABI raw_fd_ostream & errs()
This returns a reference to a raw_ostream for standard error.
Definition raw_ostream.cpp:904
llvm::addressSpaceToStorageClass
SPIRV::StorageClass::StorageClass addressSpaceToStorageClass(unsigned AddrSpace, const SPIRVSubtarget &STI)
Definition SPIRVUtils.cpp:374
llvm::AtomicOrdering
AtomicOrdering
Atomic ordering for LLVM's memory model.
Definition AtomicOrdering.h:56
llvm::getMemScope
SPIRV::Scope::Scope getMemScope(LLVMContext &Ctx, SyncScope::ID Id)
Definition SPIRVUtils.cpp:450
llvm::createSPIRVInstructionSelector
InstructionSelector * createSPIRVInstructionSelector(const SPIRVTargetMachine &TM, const SPIRVSubtarget &Subtarget, const RegisterBankInfo &RBI)
Definition SPIRVInstructionSelector.cpp:7291
llvm::getStringValueFromReg
std::string getStringValueFromReg(Register Reg, MachineRegisterInfo &MRI)
Definition SPIRVUtils.cpp:184
llvm::foldImm
int64_t foldImm(const MachineOperand &MO, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1165
llvm::Op
DWARFExpression::Operation Op
Definition DWARFExpressionPrinter.cpp:25
llvm::ArrayRef
ArrayRef(const T &OneElt) -> ArrayRef< T >
llvm::getDefInstrMaybeConstant
MachineInstr * getDefInstrMaybeConstant(Register &ConstReg, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:476
llvm::BitWidth
constexpr unsigned BitWidth
Definition BitmaskEnum.h:219
llvm::cast
decltype(auto) cast(const From &Val)
cast<X> - Return the argument parameter cast to the specified type.
Definition Casting.h:559
llvm::hasInitializer
bool hasInitializer(const GlobalVariable *GV)
Definition SPIRVUtils.h:358
llvm::isSpvIntrinsic
bool isSpvIntrinsic(const MachineInstr &MI, Intrinsic::ID IntrinsicID)
Definition SPIRVUtils.cpp:511
llvm::addStringImm
void addStringImm(const StringRef &Str, MCInst &Inst)
Definition SPIRVUtils.cpp:155
llvm::getVRegDef
MachineInstr * getVRegDef(MachineRegisterInfo &MRI, Register Reg)
Definition SPIRVUtils.cpp:915
llvm::getMemSemantics
SPIRV::MemorySemantics::MemorySemantics getMemSemantics(AtomicOrdering Ord)
Definition SPIRVUtils.cpp:432
llvm::getLinkStringForBuiltIn
std::string getLinkStringForBuiltIn(SPIRV::BuiltIn::BuiltIn BuiltInValue)
Definition SPIRVBaseInfo.cpp:202
llvm::isTriviallyDead
LLVM_ABI bool isTriviallyDead(const MachineInstr &MI, const MachineRegisterInfo &MRI)
Check whether an instruction MI is dead: it only defines dead virtual registers, and doesn't have oth...
Definition Utils.cpp:224
N
#define N
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