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 selectInterlockedOp(Register ResVReg, SPIRVTypeInst ResType,
181 MachineInstr &I, unsigned Opcode) 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 selectBitreverseViaI32(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::selectInterlockedOp(Register ResVReg,
2449 SPIRVTypeInst ResType,
2450 MachineInstr &I,
2451 unsigned Opcode) const {
2452 Register Ptr = I.getOperand(2).getReg();
2453 Register Value = I.getOperand(3).getReg();
2454
2455 SPIRV::StorageClass::StorageClass SC = GR.getPointerStorageClass(Ptr);
2456 assert((SC == SPIRV::StorageClass::Workgroup ||
2457 SC == SPIRV::StorageClass::StorageBuffer) &&
2458 "InterlockedAdd requires Workgroup or StorageBuffer storage class");
2459 uint32_t Scope = static_cast<uint32_t>(SC == SPIRV::StorageClass::Workgroup
2460 ? SPIRV::Scope::Workgroup
2461 : SPIRV::Scope::Device);
2462 Register ScopeReg = buildI32Constant(Scope, I);
2463
2464 uint32_t MemSem = static_cast<uint32_t>(getMemSemanticsForStorageClass(SC));
2465 Register MemSemReg = buildI32Constant(MemSem, I);
2466
2467 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
2468 .addDef(ResVReg)
2469 .addUse(GR.getSPIRVTypeID(ResType))
2470 .addUse(Ptr)
2471 .addUse(ScopeReg)
2472 .addUse(MemSemReg)
2473 .addUse(Value)
2474 .constrainAllUses(TII, TRI, RBI);
2475 return true;
2476}
2477
2478bool SPIRVInstructionSelector::selectUnmergeValues(MachineInstr &I) const {
2479 unsigned ArgI = I.getNumOperands() - 1;
2480 Register SrcReg =
2481 I.getOperand(ArgI).isReg() ? I.getOperand(ArgI).getReg() : Register(0);
2482 SPIRVTypeInst SrcType =
2483 SrcReg.isValid() ? GR.getSPIRVTypeForVReg(SrcReg) : nullptr;
2484 if (!SrcType || SrcType->getOpcode() != SPIRV::OpTypeVector)
2485 report_fatal_error(
2486 "cannot select G_UNMERGE_VALUES with a non-vector argument");
2487
2488 SPIRVTypeInst ScalarType = GR.getScalarOrVectorComponentType(SrcType);
2489 MachineBasicBlock &BB = *I.getParent();
2490 unsigned CurrentIndex = 0;
2491 for (unsigned i = 0; i < I.getNumDefs(); ++i) {
2492 Register ResVReg = I.getOperand(i).getReg();
2493 SPIRVTypeInst ResType = GR.getSPIRVTypeForVReg(ResVReg);
2494 if (!ResType) {
2495 LLT ResLLT = MRI->getType(ResVReg);
2496 assert(ResLLT.isValid());
2497 if (ResLLT.isVector()) {
2498 ResType = GR.getOrCreateSPIRVVectorType(
2499 ScalarType, ResLLT.getNumElements(), I, TII);
2500 } else {
2501 ResType = ScalarType;
2502 }
2503 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
2504 GR.assignSPIRVTypeToVReg(ResType, ResVReg, *GR.CurMF);
2505 }
2506
2507 if (ResType->getOpcode() == SPIRV::OpTypeVector) {
2508 Register UndefReg = GR.getOrCreateUndef(I, SrcType, TII);
2509 auto MIB =
2510 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorShuffle))
2511 .addDef(ResVReg)
2512 .addUse(GR.getSPIRVTypeID(ResType))
2513 .addUse(SrcReg)
2514 .addUse(UndefReg);
2515 unsigned NumElements = GR.getScalarOrVectorComponentCount(ResType);
2516 for (unsigned j = 0; j < NumElements; ++j) {
2517 MIB.addImm(CurrentIndex + j);
2518 }
2519 CurrentIndex += NumElements;
2520 MIB.constrainAllUses(TII, TRI, RBI);
2521 } else {
2522 auto MIB =
2523 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
2524 .addDef(ResVReg)
2525 .addUse(GR.getSPIRVTypeID(ResType))
2526 .addUse(SrcReg)
2527 .addImm(CurrentIndex);
2528 CurrentIndex++;
2529 MIB.constrainAllUses(TII, TRI, RBI);
2530 }
2531 }
2532 return true;
2533}
2534
2535bool SPIRVInstructionSelector::selectFence(MachineInstr &I) const {
2536 AtomicOrdering AO = AtomicOrdering(I.getOperand(0).getImm());
2537 uint32_t MemSem = static_cast<uint32_t>(getMemSemantics(AO));
2538 Register MemSemReg = buildI32Constant(MemSem, I);
2539 SyncScope::ID Ord = SyncScope::ID(I.getOperand(1).getImm());
2540 uint32_t Scope = static_cast<uint32_t>(
2541 getMemScope(GR.CurMF->getFunction().getContext(), Ord));
2542 Register ScopeReg = buildI32Constant(Scope, I);
2543 MachineBasicBlock &BB = *I.getParent();
2544 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpMemoryBarrier))
2545 .addUse(ScopeReg)
2546 .addUse(MemSemReg)
2547 .constrainAllUses(TII, TRI, RBI);
2548 return true;
2549}
2550
2551bool SPIRVInstructionSelector::selectOverflowArith(Register ResVReg,
2552 SPIRVTypeInst ResType,
2553 MachineInstr &I,
2554 unsigned Opcode) const {
2555 Type *ResTy = nullptr;
2556 StringRef ResName;
2557 if (!GR.findValueAttrs(&I, ResTy, ResName))
2558 return diagnoseUnsupported(
2559 I,
2560 "Not enough info to select the arithmetic with overflow instruction");
2561 if (!ResTy || !ResTy->isStructTy())
2562 return diagnoseUnsupported(I,
2563 "Expect struct type result for the arithmetic "
2564 "with overflow instruction");
2565 // "Result Type must be from OpTypeStruct. The struct must have two members,
2566 // and the two members must be the same type."
2567 Type *ResElemTy = cast<StructType>(ResTy)->getElementType(0);
2568 ResTy = StructType::get(ResElemTy, ResElemTy);
2569 // Build SPIR-V types and constant(s) if needed.
2570 MachineIRBuilder MIRBuilder(I);
2571 SPIRVTypeInst StructType = GR.getOrCreateSPIRVType(
2572 ResTy, MIRBuilder, SPIRV::AccessQualifier::ReadWrite, false);
2573 assert(I.getNumDefs() > 1 && "Not enought operands");
2574 SPIRVTypeInst BoolType = GR.getOrCreateSPIRVBoolType(I, TII);
2575 unsigned N = GR.getScalarOrVectorComponentCount(ResType);
2576 if (N > 1)
2577 BoolType = GR.getOrCreateSPIRVVectorType(BoolType, N, I, TII);
2578 Register BoolTypeReg = GR.getSPIRVTypeID(BoolType);
2579 Register ZeroReg = buildZerosVal(ResType, I);
2580 // A new virtual register to store the result struct.
2581 Register StructVReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
2582 MRI->setRegClass(StructVReg, &SPIRV::IDRegClass);
2583 // Build the result name if needed.
2584 if (ResName.size() > 0)
2585 buildOpName(StructVReg, ResName, MIRBuilder);
2586 // Build the arithmetic with overflow instruction.
2587 MachineBasicBlock &BB = *I.getParent();
2588 auto MIB =
2589 BuildMI(BB, MIRBuilder.getInsertPt(), I.getDebugLoc(), TII.get(Opcode))
2590 .addDef(StructVReg)
2591 .addUse(GR.getSPIRVTypeID(StructType));
2592 for (unsigned i = I.getNumDefs(); i < I.getNumOperands(); ++i)
2593 MIB.addUse(I.getOperand(i).getReg());
2594 MIB.constrainAllUses(TII, TRI, RBI);
2595 // Build instructions to extract fields of the instruction's result.
2596 // A new virtual register to store the higher part of the result struct.
2597 Register HigherVReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
2598 MRI->setRegClass(HigherVReg, &SPIRV::iIDRegClass);
2599 for (unsigned i = 0; i < I.getNumDefs(); ++i) {
2600 auto MIB =
2601 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
2602 .addDef(i == 1 ? HigherVReg : I.getOperand(i).getReg())
2603 .addUse(GR.getSPIRVTypeID(ResType))
2604 .addUse(StructVReg)
2605 .addImm(i);
2606 MIB.constrainAllUses(TII, TRI, RBI);
2607 }
2608 // Build boolean value from the higher part.
2609 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpINotEqual))
2610 .addDef(I.getOperand(1).getReg())
2611 .addUse(BoolTypeReg)
2612 .addUse(HigherVReg)
2613 .addUse(ZeroReg)
2614 .constrainAllUses(TII, TRI, RBI);
2615 return true;
2616}
2617
2618bool SPIRVInstructionSelector::selectAtomicCmpXchg(Register ResVReg,
2619 SPIRVTypeInst ResType,
2620 MachineInstr &I) const {
2621 assert(isa<GIntrinsic>(I) &&
2622 "selectAtomicCmpXchg only handles the spv_cmpxchg intrinsic");
2623 Register Ptr = I.getOperand(2).getReg();
2624 Register ScopeReg = I.getOperand(5).getReg();
2625 Register MemSemEqReg = I.getOperand(6).getReg();
2626 Register MemSemNeqReg = I.getOperand(7).getReg();
2627 Register Cmp = I.getOperand(3).getReg();
2628 Register Val = I.getOperand(4).getReg();
2629 SPIRVTypeInst SpvValTy = GR.getSPIRVTypeForVReg(Val);
2630 Register ACmpRes = createVirtualRegister(SpvValTy, &GR, MRI, *I.getMF());
2631 const DebugLoc &DL = I.getDebugLoc();
2632 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpAtomicCompareExchange))
2633 .addDef(ACmpRes)
2634 .addUse(GR.getSPIRVTypeID(SpvValTy))
2635 .addUse(Ptr)
2636 .addUse(ScopeReg)
2637 .addUse(MemSemEqReg)
2638 .addUse(MemSemNeqReg)
2639 .addUse(Val)
2640 .addUse(Cmp)
2641 .constrainAllUses(TII, TRI, RBI);
2642 SPIRVTypeInst BoolTy = GR.getOrCreateSPIRVBoolType(I, TII);
2643 Register CmpSuccReg = createVirtualRegister(BoolTy, &GR, MRI, *I.getMF());
2644 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpIEqual))
2645 .addDef(CmpSuccReg)
2646 .addUse(GR.getSPIRVTypeID(BoolTy))
2647 .addUse(ACmpRes)
2648 .addUse(Cmp)
2649 .constrainAllUses(TII, TRI, RBI);
2650 Register TmpReg = createVirtualRegister(ResType, &GR, MRI, *I.getMF());
2651 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpCompositeInsert))
2652 .addDef(TmpReg)
2653 .addUse(GR.getSPIRVTypeID(ResType))
2654 .addUse(ACmpRes)
2655 .addUse(GR.getOrCreateUndef(I, ResType, TII))
2656 .addImm(0)
2657 .constrainAllUses(TII, TRI, RBI);
2658 BuildMI(*I.getParent(), I, DL, TII.get(SPIRV::OpCompositeInsert))
2659 .addDef(ResVReg)
2660 .addUse(GR.getSPIRVTypeID(ResType))
2661 .addUse(CmpSuccReg)
2662 .addUse(TmpReg)
2663 .addImm(1)
2664 .constrainAllUses(TII, TRI, RBI);
2665 return true;
2666}
2667
2668static bool isUSMStorageClass(SPIRV::StorageClass::StorageClass SC) {
2669 switch (SC) {
2670 case SPIRV::StorageClass::DeviceOnlyINTEL:
2671 case SPIRV::StorageClass::HostOnlyINTEL:
2672 return true;
2673 default:
2674 return false;
2675 }
2676}
2677
2678// Returns true ResVReg is referred only from global vars and OpName's.
2679static bool isASCastInGVar(MachineRegisterInfo *MRI, Register ResVReg) {
2680 bool IsGRef = false;
2681 bool IsAllowedRefs =
2682 llvm::all_of(MRI->use_instructions(ResVReg), [&IsGRef](auto const &It) {
2683 unsigned Opcode = It.getOpcode();
2684 if (Opcode == SPIRV::OpConstantComposite ||
2685 Opcode == SPIRV::OpSpecConstantComposite ||
2686 Opcode == SPIRV::OpVariable ||
2687 isSpvIntrinsic(It, Intrinsic::spv_init_global))
2688 return IsGRef = true;
2689 return Opcode == SPIRV::OpName;
2690 });
2691 return IsAllowedRefs && IsGRef;
2692}
2693
2694Register SPIRVInstructionSelector::getUcharPtrTypeReg(
2695 MachineInstr &I, SPIRV::StorageClass::StorageClass SC) const {
2696 return GR.getSPIRVTypeID(GR.getOrCreateSPIRVPointerType(
2697 Type::getInt8Ty(I.getMF()->getFunction().getContext()), I, SC));
2698}
2699
2700MachineInstrBuilder
2701SPIRVInstructionSelector::buildSpecConstantOp(MachineInstr &I, Register Dest,
2702 Register Src, Register DestType,
2703 uint32_t Opcode) const {
2704 return BuildMI(*I.getParent(), I, I.getDebugLoc(),
2705 TII.get(SPIRV::OpSpecConstantOp))
2706 .addDef(Dest)
2707 .addUse(DestType)
2708 .addImm(Opcode)
2709 .addUse(Src);
2710}
2711
2712MachineInstrBuilder
2713SPIRVInstructionSelector::buildConstGenericPtr(MachineInstr &I, Register SrcPtr,
2714 SPIRVTypeInst SrcPtrTy) const {
2715 SPIRVTypeInst GenericPtrTy =
2716 GR.changePointerStorageClass(SrcPtrTy, SPIRV::StorageClass::Generic, I);
2717 Register Tmp = MRI->createVirtualRegister(&SPIRV::pIDRegClass);
2718 MRI->setType(Tmp, LLT::pointer(storageClassToAddressSpace(
2719 SPIRV::StorageClass::Generic),
2720 GR.getPointerSize()));
2721 MachineFunction *MF = I.getParent()->getParent();
2722 GR.assignSPIRVTypeToVReg(GenericPtrTy, Tmp, *MF);
2723 MachineInstrBuilder MIB = buildSpecConstantOp(
2724 I, Tmp, SrcPtr, GR.getSPIRVTypeID(GenericPtrTy),
2725 static_cast<uint32_t>(SPIRV::Opcode::PtrCastToGeneric));
2726 GR.add(MIB.getInstr(), MIB);
2727 return MIB;
2728}
2729
2730// In SPIR-V address space casting can only happen to and from the Generic
2731// storage class. We can also only cast Workgroup, CrossWorkgroup, or Function
2732// pointers to and from Generic pointers. As such, we can convert e.g. from
2733// Workgroup to Function by going via a Generic pointer as an intermediary. All
2734// other combinations can only be done by a bitcast, and are probably not safe.
2735bool SPIRVInstructionSelector::selectAddrSpaceCast(Register ResVReg,
2736 SPIRVTypeInst ResType,
2737 MachineInstr &I) const {
2738 MachineBasicBlock &BB = *I.getParent();
2739 const DebugLoc &DL = I.getDebugLoc();
2740
2741 Register SrcPtr = I.getOperand(1).getReg();
2742 SPIRVTypeInst SrcPtrTy = GR.getSPIRVTypeForVReg(SrcPtr);
2743
2744 // don't generate a cast for a null that may be represented by OpTypeInt
2745 if (SrcPtrTy->getOpcode() != SPIRV::OpTypePointer ||
2746 ResType->getOpcode() != SPIRV::OpTypePointer)
2747 return BuildCOPY(ResVReg, SrcPtr, I);
2748
2749 SPIRV::StorageClass::StorageClass SrcSC = GR.getPointerStorageClass(SrcPtrTy);
2750 SPIRV::StorageClass::StorageClass DstSC = GR.getPointerStorageClass(ResType);
2751
2752 if (isASCastInGVar(MRI, ResVReg)) {
2753 // AddrSpaceCast uses within OpVariable and OpConstantComposite instructions
2754 // are expressed by OpSpecConstantOp with an Opcode.
2755 // TODO: maybe insert a check whether the Kernel capability was declared and
2756 // so PtrCastToGeneric/GenericCastToPtr are available.
2757 unsigned SpecOpcode =
2758 DstSC == SPIRV::StorageClass::Generic && isGenericCastablePtr(SrcSC)
2759 ? static_cast<uint32_t>(SPIRV::Opcode::PtrCastToGeneric)
2760 : (SrcSC == SPIRV::StorageClass::Generic &&
2761 isGenericCastablePtr(DstSC)
2762 ? static_cast<uint32_t>(SPIRV::Opcode::GenericCastToPtr)
2763 : 0);
2764 // TODO: OpConstantComposite expects i8*, so we are forced to forget a
2765 // correct value of ResType and use general i8* instead. Maybe this should
2766 // be addressed in the emit-intrinsic step to infer a correct
2767 // OpConstantComposite type.
2768 if (SpecOpcode) {
2769 buildSpecConstantOp(I, ResVReg, SrcPtr, getUcharPtrTypeReg(I, DstSC),
2770 SpecOpcode)
2771 .constrainAllUses(TII, TRI, RBI);
2772 } else if (isGenericCastablePtr(SrcSC) && isGenericCastablePtr(DstSC)) {
2773 MachineInstrBuilder MIB = buildConstGenericPtr(I, SrcPtr, SrcPtrTy);
2774 MIB.constrainAllUses(TII, TRI, RBI);
2775 buildSpecConstantOp(
2776 I, ResVReg, MIB->getOperand(0).getReg(), getUcharPtrTypeReg(I, DstSC),
2777 static_cast<uint32_t>(SPIRV::Opcode::GenericCastToPtr))
2778 .constrainAllUses(TII, TRI, RBI);
2779 }
2780 return true;
2781 }
2782
2783 // don't generate a cast between identical storage classes
2784 if (SrcSC == DstSC)
2785 return BuildCOPY(ResVReg, SrcPtr, I);
2786
2787 if ((SrcSC == SPIRV::StorageClass::Function &&
2788 DstSC == SPIRV::StorageClass::Private) ||
2789 (DstSC == SPIRV::StorageClass::Function &&
2790 SrcSC == SPIRV::StorageClass::Private))
2791 return BuildCOPY(ResVReg, SrcPtr, I);
2792
2793 // Casting from an eligible pointer to Generic.
2794 if (DstSC == SPIRV::StorageClass::Generic && isGenericCastablePtr(SrcSC))
2795 return selectUnOp(ResVReg, ResType, I, SPIRV::OpPtrCastToGeneric);
2796 // Casting from Generic to an eligible pointer.
2797 if (SrcSC == SPIRV::StorageClass::Generic && isGenericCastablePtr(DstSC))
2798 return selectUnOp(ResVReg, ResType, I, SPIRV::OpGenericCastToPtr);
2799 // Casting between 2 eligible pointers using Generic as an intermediary.
2800 if (isGenericCastablePtr(SrcSC) && isGenericCastablePtr(DstSC)) {
2801 SPIRVTypeInst GenericPtrTy =
2802 GR.changePointerStorageClass(SrcPtrTy, SPIRV::StorageClass::Generic, I);
2803 Register Tmp = createVirtualRegister(GenericPtrTy, &GR, MRI, MRI->getMF());
2804 BuildMI(BB, I, DL, TII.get(SPIRV::OpPtrCastToGeneric))
2805 .addDef(Tmp)
2806 .addUse(GR.getSPIRVTypeID(GenericPtrTy))
2807 .addUse(SrcPtr)
2808 .constrainAllUses(TII, TRI, RBI);
2809 BuildMI(BB, I, DL, TII.get(SPIRV::OpGenericCastToPtr))
2810 .addDef(ResVReg)
2811 .addUse(GR.getSPIRVTypeID(ResType))
2812 .addUse(Tmp)
2813 .constrainAllUses(TII, TRI, RBI);
2814 return true;
2815 }
2816
2817 // Check if instructions from the SPV_INTEL_usm_storage_classes extension may
2818 // be applied
2819 if (isUSMStorageClass(SrcSC) && DstSC == SPIRV::StorageClass::CrossWorkgroup)
2820 return selectUnOp(ResVReg, ResType, I,
2821 SPIRV::OpPtrCastToCrossWorkgroupINTEL);
2822 if (SrcSC == SPIRV::StorageClass::CrossWorkgroup && isUSMStorageClass(DstSC))
2823 return selectUnOp(ResVReg, ResType, I,
2824 SPIRV::OpCrossWorkgroupCastToPtrINTEL);
2825 if (isUSMStorageClass(SrcSC) && DstSC == SPIRV::StorageClass::Generic)
2826 return selectUnOp(ResVReg, ResType, I, SPIRV::OpPtrCastToGeneric);
2827 if (SrcSC == SPIRV::StorageClass::Generic && isUSMStorageClass(DstSC))
2828 return selectUnOp(ResVReg, ResType, I, SPIRV::OpGenericCastToPtr);
2829
2830 // Bitcast for pointers requires that the address spaces must match
2831 return false;
2832}
2833
2834// G_PTRMASK - Apply a bitmask to a pointer value.
2835// Result = Ptr & Mask
2836// We need to convert the pointer to an integer, perform the AND operation,
2837// and convert back to a pointer.
2838bool SPIRVInstructionSelector::selectPtrMask(Register ResVReg,
2839 SPIRVTypeInst ResType,
2840 MachineInstr &I) const {
2841 if (STI.isLogicalSPIRV())
2842 return diagnoseUnsupported(
2843 I, "G_PTRMASK is not supported with logical SPIR-V");
2844 MachineBasicBlock &BB = *I.getParent();
2845 MachineFunction &MF = *BB.getParent();
2846 const DebugLoc &DL = I.getDebugLoc();
2847
2848 Register PtrReg = I.getOperand(1).getReg();
2849 Register MaskReg = I.getOperand(2).getReg();
2850
2851 SPIRVTypeInst MaskType = GR.getSPIRVTypeForVReg(MaskReg);
2852
2853 // Convert pointer to integer.
2854 Register PtrAsInt = MRI->createVirtualRegister(GR.getRegClass(MaskType));
2855 GR.assignSPIRVTypeToVReg(MaskType, PtrAsInt, MF);
2856
2857 BuildMI(BB, I, DL, TII.get(SPIRV::OpConvertPtrToU))
2858 .addDef(PtrAsInt)
2859 .addUse(GR.getSPIRVTypeID(MaskType))
2860 .addUse(PtrReg)
2861 .constrainAllUses(TII, TRI, RBI);
2862
2863 // Perform bitwise AND.
2864 Register MaskedInt = MRI->createVirtualRegister(GR.getRegClass(MaskType));
2865 GR.assignSPIRVTypeToVReg(MaskType, MaskedInt, MF);
2866
2867 unsigned AndOpcode = GR.getScalarOrVectorComponentCount(MaskType) > 1
2868 ? SPIRV::OpBitwiseAndV
2869 : SPIRV::OpBitwiseAndS;
2870
2871 BuildMI(BB, I, DL, TII.get(AndOpcode))
2872 .addDef(MaskedInt)
2873 .addUse(GR.getSPIRVTypeID(MaskType))
2874 .addUse(PtrAsInt)
2875 .addUse(MaskReg)
2876 .constrainAllUses(TII, TRI, RBI);
2877
2878 // Convert integer back to pointer.
2879 BuildMI(BB, I, DL, TII.get(SPIRV::OpConvertUToPtr))
2880 .addDef(ResVReg)
2881 .addUse(GR.getSPIRVTypeID(ResType))
2882 .addUse(MaskedInt)
2883 .constrainAllUses(TII, TRI, RBI);
2884
2885 return true;
2886}
2887
2888static unsigned getFCmpOpcode(unsigned PredNum) {
2889 auto Pred = static_cast<CmpInst::Predicate>(PredNum);
2890 switch (Pred) {
2891 case CmpInst::FCMP_OEQ:
2892 return SPIRV::OpFOrdEqual;
2893 case CmpInst::FCMP_OGE:
2894 return SPIRV::OpFOrdGreaterThanEqual;
2895 case CmpInst::FCMP_OGT:
2896 return SPIRV::OpFOrdGreaterThan;
2897 case CmpInst::FCMP_OLE:
2898 return SPIRV::OpFOrdLessThanEqual;
2899 case CmpInst::FCMP_OLT:
2900 return SPIRV::OpFOrdLessThan;
2901 case CmpInst::FCMP_ONE:
2902 return SPIRV::OpFOrdNotEqual;
2903 case CmpInst::FCMP_ORD:
2904 return SPIRV::OpOrdered;
2905 case CmpInst::FCMP_UEQ:
2906 return SPIRV::OpFUnordEqual;
2907 case CmpInst::FCMP_UGE:
2908 return SPIRV::OpFUnordGreaterThanEqual;
2909 case CmpInst::FCMP_UGT:
2910 return SPIRV::OpFUnordGreaterThan;
2911 case CmpInst::FCMP_ULE:
2912 return SPIRV::OpFUnordLessThanEqual;
2913 case CmpInst::FCMP_ULT:
2914 return SPIRV::OpFUnordLessThan;
2915 case CmpInst::FCMP_UNE:
2916 return SPIRV::OpFUnordNotEqual;
2917 case CmpInst::FCMP_UNO:
2918 return SPIRV::OpUnordered;
2919 default:
2920 llvm_unreachable("Unknown predicate type for FCmp");
2921 }
2922}
2923
2924static unsigned getICmpOpcode(unsigned PredNum) {
2925 auto Pred = static_cast<CmpInst::Predicate>(PredNum);
2926 switch (Pred) {
2927 case CmpInst::ICMP_EQ:
2928 return SPIRV::OpIEqual;
2929 case CmpInst::ICMP_NE:
2930 return SPIRV::OpINotEqual;
2931 case CmpInst::ICMP_SGE:
2932 return SPIRV::OpSGreaterThanEqual;
2933 case CmpInst::ICMP_SGT:
2934 return SPIRV::OpSGreaterThan;
2935 case CmpInst::ICMP_SLE:
2936 return SPIRV::OpSLessThanEqual;
2937 case CmpInst::ICMP_SLT:
2938 return SPIRV::OpSLessThan;
2939 case CmpInst::ICMP_UGE:
2940 return SPIRV::OpUGreaterThanEqual;
2941 case CmpInst::ICMP_UGT:
2942 return SPIRV::OpUGreaterThan;
2943 case CmpInst::ICMP_ULE:
2944 return SPIRV::OpULessThanEqual;
2945 case CmpInst::ICMP_ULT:
2946 return SPIRV::OpULessThan;
2947 default:
2948 llvm_unreachable("Unknown predicate type for ICmp");
2949 }
2950}
2951
2952static unsigned getPtrCmpOpcode(unsigned Pred) {
2953 switch (static_cast<CmpInst::Predicate>(Pred)) {
2954 case CmpInst::ICMP_EQ:
2955 return SPIRV::OpPtrEqual;
2956 case CmpInst::ICMP_NE:
2957 return SPIRV::OpPtrNotEqual;
2958 default:
2959 llvm_unreachable("Unknown predicate type for pointer comparison");
2960 }
2961}
2962
2963// Return the logical operation, or abort if none exists.
2964static unsigned getBoolCmpOpcode(unsigned PredNum) {
2965 auto Pred = static_cast<CmpInst::Predicate>(PredNum);
2966 switch (Pred) {
2967 case CmpInst::ICMP_EQ:
2968 return SPIRV::OpLogicalEqual;
2969 case CmpInst::ICMP_NE:
2970 return SPIRV::OpLogicalNotEqual;
2971 default:
2972 llvm_unreachable("Unknown predicate type for Bool comparison");
2973 }
2974}
2975
2976static APFloat getZeroFP(const Type *LLVMFloatTy) {
2977 if (!LLVMFloatTy)
2978 return APFloat::getZero(APFloat::IEEEsingle());
2979 switch (LLVMFloatTy->getScalarType()->getTypeID()) {
2980 case Type::HalfTyID:
2981 return APFloat::getZero(APFloat::IEEEhalf());
2982 default:
2983 case Type::FloatTyID:
2984 return APFloat::getZero(APFloat::IEEEsingle());
2985 case Type::DoubleTyID:
2986 return APFloat::getZero(APFloat::IEEEdouble());
2987 }
2988}
2989
2990static APFloat getOneFP(const Type *LLVMFloatTy) {
2991 if (!LLVMFloatTy)
2992 return APFloat::getOne(APFloat::IEEEsingle());
2993 switch (LLVMFloatTy->getScalarType()->getTypeID()) {
2994 case Type::HalfTyID:
2995 return APFloat::getOne(APFloat::IEEEhalf());
2996 default:
2997 case Type::FloatTyID:
2998 return APFloat::getOne(APFloat::IEEEsingle());
2999 case Type::DoubleTyID:
3000 return APFloat::getOne(APFloat::IEEEdouble());
3001 }
3002}
3003
3004bool SPIRVInstructionSelector::selectAnyOrAll(Register ResVReg,
3005 SPIRVTypeInst ResType,
3006 MachineInstr &I,
3007 unsigned OpAnyOrAll) const {
3008 assert(I.getNumOperands() == 3);
3009 assert(I.getOperand(2).isReg());
3010 MachineBasicBlock &BB = *I.getParent();
3011 Register InputRegister = I.getOperand(2).getReg();
3012 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3013
3014 assert(InputType && "VReg has no type assigned");
3015
3016 bool IsBoolTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeBool);
3017 bool IsVectorTy = InputType->getOpcode() == SPIRV::OpTypeVector;
3018 if (IsBoolTy && !IsVectorTy) {
3019 assert(ResVReg == I.getOperand(0).getReg());
3020 return BuildCOPY(ResVReg, InputRegister, I);
3021 }
3022
3023 bool IsFloatTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3024 unsigned SpirvNotEqualId =
3025 IsFloatTy ? SPIRV::OpFOrdNotEqual : SPIRV::OpINotEqual;
3026 SPIRVTypeInst SpvBoolScalarTy = GR.getOrCreateSPIRVBoolType(I, TII);
3027 SPIRVTypeInst SpvBoolTy = SpvBoolScalarTy;
3028 Register NotEqualReg = ResVReg;
3029
3030 if (IsVectorTy) {
3031 NotEqualReg =
3032 IsBoolTy ? InputRegister
3033 : createVirtualRegister(SpvBoolTy, &GR, MRI, MRI->getMF());
3034 const unsigned NumElts = GR.getScalarOrVectorComponentCount(InputType);
3035 SpvBoolTy = GR.getOrCreateSPIRVVectorType(SpvBoolTy, NumElts, I, TII);
3036 }
3037
3038 if (!IsBoolTy) {
3039 Register ConstZeroReg =
3040 IsFloatTy ? buildZerosValF(InputType, I) : buildZerosVal(InputType, I);
3041
3042 BuildMI(BB, I, I.getDebugLoc(), TII.get(SpirvNotEqualId))
3043 .addDef(NotEqualReg)
3044 .addUse(GR.getSPIRVTypeID(SpvBoolTy))
3045 .addUse(InputRegister)
3046 .addUse(ConstZeroReg)
3047 .constrainAllUses(TII, TRI, RBI);
3048 }
3049
3050 if (IsVectorTy)
3051 BuildMI(BB, I, I.getDebugLoc(), TII.get(OpAnyOrAll))
3052 .addDef(ResVReg)
3053 .addUse(GR.getSPIRVTypeID(SpvBoolScalarTy))
3054 .addUse(NotEqualReg)
3055 .constrainAllUses(TII, TRI, RBI);
3056 return true;
3057}
3058
3059bool SPIRVInstructionSelector::selectAll(Register ResVReg,
3060 SPIRVTypeInst ResType,
3061 MachineInstr &I) const {
3062 return selectAnyOrAll(ResVReg, ResType, I, SPIRV::OpAll);
3063}
3064
3065bool SPIRVInstructionSelector::selectAny(Register ResVReg,
3066 SPIRVTypeInst ResType,
3067 MachineInstr &I) const {
3068 return selectAnyOrAll(ResVReg, ResType, I, SPIRV::OpAny);
3069}
3070
3071// Select the OpDot instruction for the given float dot
3072bool SPIRVInstructionSelector::selectFloatDot(Register ResVReg,
3073 SPIRVTypeInst ResType,
3074 MachineInstr &I) const {
3075 assert(I.getNumOperands() == 4);
3076 assert(I.getOperand(2).isReg());
3077 assert(I.getOperand(3).isReg());
3078
3079 [[maybe_unused]] SPIRVTypeInst VecType =
3080 GR.getSPIRVTypeForVReg(I.getOperand(2).getReg());
3081
3082 assert(VecType->getOpcode() == SPIRV::OpTypeVector &&
3083 GR.getScalarOrVectorComponentCount(VecType) > 1 &&
3084 "dot product requires a vector of at least 2 components");
3085
3086 [[maybe_unused]] SPIRVTypeInst EltType =
3087 GR.getScalarOrVectorComponentType(VecType);
3088
3089 assert(EltType->getOpcode() == SPIRV::OpTypeFloat);
3090
3091 MachineBasicBlock &BB = *I.getParent();
3092 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpDot))
3093 .addDef(ResVReg)
3094 .addUse(GR.getSPIRVTypeID(ResType))
3095 .addUse(I.getOperand(2).getReg())
3096 .addUse(I.getOperand(3).getReg())
3097 .constrainAllUses(TII, TRI, RBI);
3098 return true;
3099}
3100
3101bool SPIRVInstructionSelector::selectIntegerDot(Register ResVReg,
3102 SPIRVTypeInst ResType,
3103 MachineInstr &I,
3104 bool Signed) const {
3105 assert(I.getNumOperands() == 4);
3106 assert(I.getOperand(2).isReg());
3107 assert(I.getOperand(3).isReg());
3108 MachineBasicBlock &BB = *I.getParent();
3109
3110 auto DotOp = Signed ? SPIRV::OpSDot : SPIRV::OpUDot;
3111 BuildMI(BB, I, I.getDebugLoc(), TII.get(DotOp))
3112 .addDef(ResVReg)
3113 .addUse(GR.getSPIRVTypeID(ResType))
3114 .addUse(I.getOperand(2).getReg())
3115 .addUse(I.getOperand(3).getReg())
3116 .constrainAllUses(TII, TRI, RBI);
3117 return true;
3118}
3119
3120// Since pre-1.6 SPIRV has no integer dot implementation,
3121// expand by piecewise multiplying and adding the results
3122bool SPIRVInstructionSelector::selectIntegerDotExpansion(
3123 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3124 assert(I.getNumOperands() == 4);
3125 assert(I.getOperand(2).isReg());
3126 assert(I.getOperand(3).isReg());
3127 MachineBasicBlock &BB = *I.getParent();
3128
3129 // Multiply the vectors, then sum the results
3130 Register Vec0 = I.getOperand(2).getReg();
3131 Register Vec1 = I.getOperand(3).getReg();
3132 Register TmpVec = MRI->createVirtualRegister(GR.getRegClass(ResType));
3133 SPIRVTypeInst VecType = GR.getSPIRVTypeForVReg(Vec0);
3134
3135 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIMulV))
3136 .addDef(TmpVec)
3137 .addUse(GR.getSPIRVTypeID(VecType))
3138 .addUse(Vec0)
3139 .addUse(Vec1)
3140 .constrainAllUses(TII, TRI, RBI);
3141
3142 assert(VecType->getOpcode() == SPIRV::OpTypeVector &&
3143 GR.getScalarOrVectorComponentCount(VecType) > 1 &&
3144 "dot product requires a vector of at least 2 components");
3145
3146 Register Res = MRI->createVirtualRegister(GR.getRegClass(ResType));
3147 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
3148 .addDef(Res)
3149 .addUse(GR.getSPIRVTypeID(ResType))
3150 .addUse(TmpVec)
3151 .addImm(0)
3152 .constrainAllUses(TII, TRI, RBI);
3153
3154 for (unsigned i = 1; i < GR.getScalarOrVectorComponentCount(VecType); i++) {
3155 Register Elt = MRI->createVirtualRegister(GR.getRegClass(ResType));
3156
3157 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
3158 .addDef(Elt)
3159 .addUse(GR.getSPIRVTypeID(ResType))
3160 .addUse(TmpVec)
3161 .addImm(i)
3162 .constrainAllUses(TII, TRI, RBI);
3163
3164 Register Sum = i < GR.getScalarOrVectorComponentCount(VecType) - 1
3165 ? MRI->createVirtualRegister(GR.getRegClass(ResType))
3166 : ResVReg;
3167
3168 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
3169 .addDef(Sum)
3170 .addUse(GR.getSPIRVTypeID(ResType))
3171 .addUse(Res)
3172 .addUse(Elt)
3173 .constrainAllUses(TII, TRI, RBI);
3174 Res = Sum;
3175 }
3176
3177 return true;
3178}
3179
3180bool SPIRVInstructionSelector::selectOpIsInf(Register ResVReg,
3181 SPIRVTypeInst ResType,
3182 MachineInstr &I) const {
3183 MachineBasicBlock &BB = *I.getParent();
3184 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsInf))
3185 .addDef(ResVReg)
3186 .addUse(GR.getSPIRVTypeID(ResType))
3187 .addUse(I.getOperand(2).getReg())
3188 .constrainAllUses(TII, TRI, RBI);
3189 return true;
3190}
3191
3192bool SPIRVInstructionSelector::selectOpIsNan(Register ResVReg,
3193 SPIRVTypeInst ResType,
3194 MachineInstr &I) const {
3195 MachineBasicBlock &BB = *I.getParent();
3196 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsNan))
3197 .addDef(ResVReg)
3198 .addUse(GR.getSPIRVTypeID(ResType))
3199 .addUse(I.getOperand(2).getReg())
3200 .constrainAllUses(TII, TRI, RBI);
3201 return true;
3202}
3203
3204bool SPIRVInstructionSelector::selectOpIsFinite(Register ResVReg,
3205 SPIRVTypeInst ResType,
3206 MachineInstr &I) const {
3207 MachineBasicBlock &BB = *I.getParent();
3208 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsFinite))
3209 .addDef(ResVReg)
3210 .addUse(GR.getSPIRVTypeID(ResType))
3211 .addUse(I.getOperand(2).getReg())
3212 .constrainAllUses(TII, TRI, RBI);
3213 return true;
3214}
3215
3216bool SPIRVInstructionSelector::selectOpIsNormal(Register ResVReg,
3217 SPIRVTypeInst ResType,
3218 MachineInstr &I) const {
3219 MachineBasicBlock &BB = *I.getParent();
3220 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIsNormal))
3221 .addDef(ResVReg)
3222 .addUse(GR.getSPIRVTypeID(ResType))
3223 .addUse(I.getOperand(2).getReg())
3224 .constrainAllUses(TII, TRI, RBI);
3225 return true;
3226}
3227
3228template <bool Signed>
3229bool SPIRVInstructionSelector::selectDot4AddPacked(Register ResVReg,
3230 SPIRVTypeInst ResType,
3231 MachineInstr &I) const {
3232 assert(I.getNumOperands() == 5);
3233 assert(I.getOperand(2).isReg());
3234 assert(I.getOperand(3).isReg());
3235 assert(I.getOperand(4).isReg());
3236 MachineBasicBlock &BB = *I.getParent();
3237
3238 Register Acc = I.getOperand(2).getReg();
3239 Register X = I.getOperand(3).getReg();
3240 Register Y = I.getOperand(4).getReg();
3241
3242 auto DotOp = Signed ? SPIRV::OpSDot : SPIRV::OpUDot;
3243 Register Dot = MRI->createVirtualRegister(GR.getRegClass(ResType));
3244 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(DotOp))
3245 .addDef(Dot)
3246 .addUse(GR.getSPIRVTypeID(ResType))
3247 .addUse(X)
3248 .addUse(Y);
3249 MIB.addImm(SPIRV::BuiltIn::PackedVectorFormat4x8Bit);
3250 MIB.constrainAllUses(TII, TRI, RBI);
3251
3252 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
3253 .addDef(ResVReg)
3254 .addUse(GR.getSPIRVTypeID(ResType))
3255 .addUse(Dot)
3256 .addUse(Acc)
3257 .constrainAllUses(TII, TRI, RBI);
3258 return true;
3259}
3260
3261// Since pre-1.6 SPIRV has no DotProductInput4x8BitPacked implementation,
3262// extract the elements of the packed inputs, multiply them and add the result
3263// to the accumulator.
3264template <bool Signed>
3265bool SPIRVInstructionSelector::selectDot4AddPackedExpansion(
3266 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3267 assert(I.getNumOperands() == 5);
3268 assert(I.getOperand(2).isReg());
3269 assert(I.getOperand(3).isReg());
3270 assert(I.getOperand(4).isReg());
3271 MachineBasicBlock &BB = *I.getParent();
3272
3273 Register Acc = I.getOperand(2).getReg();
3274 Register X = I.getOperand(3).getReg();
3275 Register Y = I.getOperand(4).getReg();
3276
3277 SPIRVTypeInst EltType = GR.getOrCreateSPIRVIntegerType(8, I, TII);
3278 auto ExtractOp =
3279 Signed ? SPIRV::OpBitFieldSExtract : SPIRV::OpBitFieldUExtract;
3280
3281 bool ZeroAsNull = !STI.isShader();
3282 // Extract the i8 element, multiply and add it to the accumulator
3283 for (unsigned i = 0; i < 4; i++) {
3284 // A[i]
3285 Register AElt = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3286 BuildMI(BB, I, I.getDebugLoc(), TII.get(ExtractOp))
3287 .addDef(AElt)
3288 .addUse(GR.getSPIRVTypeID(ResType))
3289 .addUse(X)
3290 .addUse(GR.getOrCreateConstInt(i * 8, I, EltType, TII, ZeroAsNull))
3291 .addUse(GR.getOrCreateConstInt(8, I, EltType, TII, ZeroAsNull))
3292 .constrainAllUses(TII, TRI, RBI);
3293
3294 // B[i]
3295 Register BElt = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3296 BuildMI(BB, I, I.getDebugLoc(), TII.get(ExtractOp))
3297 .addDef(BElt)
3298 .addUse(GR.getSPIRVTypeID(ResType))
3299 .addUse(Y)
3300 .addUse(GR.getOrCreateConstInt(i * 8, I, EltType, TII, ZeroAsNull))
3301 .addUse(GR.getOrCreateConstInt(8, I, EltType, TII, ZeroAsNull))
3302 .constrainAllUses(TII, TRI, RBI);
3303
3304 // A[i] * B[i]
3305 Register Mul = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3306 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIMulS))
3307 .addDef(Mul)
3308 .addUse(GR.getSPIRVTypeID(ResType))
3309 .addUse(AElt)
3310 .addUse(BElt)
3311 .constrainAllUses(TII, TRI, RBI);
3312
3313 // Discard 24 highest-bits so that stored i32 register is i8 equivalent
3314 Register MaskMul = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3315 BuildMI(BB, I, I.getDebugLoc(), TII.get(ExtractOp))
3316 .addDef(MaskMul)
3317 .addUse(GR.getSPIRVTypeID(ResType))
3318 .addUse(Mul)
3319 .addUse(GR.getOrCreateConstInt(0, I, EltType, TII, ZeroAsNull))
3320 .addUse(GR.getOrCreateConstInt(8, I, EltType, TII, ZeroAsNull))
3321 .constrainAllUses(TII, TRI, RBI);
3322
3323 // Acc = Acc + A[i] * B[i]
3324 Register Sum =
3325 i < 3 ? MRI->createVirtualRegister(&SPIRV::IDRegClass) : ResVReg;
3326 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
3327 .addDef(Sum)
3328 .addUse(GR.getSPIRVTypeID(ResType))
3329 .addUse(Acc)
3330 .addUse(MaskMul)
3331 .constrainAllUses(TII, TRI, RBI);
3332
3333 Acc = Sum;
3334 }
3335
3336 return true;
3337}
3338
3339/// Transform saturate(x) to clamp(x, 0.0f, 1.0f) as SPIRV
3340/// does not have a saturate builtin.
3341bool SPIRVInstructionSelector::selectSaturate(Register ResVReg,
3342 SPIRVTypeInst ResType,
3343 MachineInstr &I) const {
3344 assert(I.getNumOperands() == 3);
3345 assert(I.getOperand(2).isReg());
3346 MachineBasicBlock &BB = *I.getParent();
3347 Register VZero = buildZerosValF(ResType, I);
3348 Register VOne = buildOnesValF(ResType, I);
3349
3350 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
3351 .addDef(ResVReg)
3352 .addUse(GR.getSPIRVTypeID(ResType))
3353 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
3354 .addImm(GL::FClamp)
3355 .addUse(I.getOperand(2).getReg())
3356 .addUse(VZero)
3357 .addUse(VOne)
3358 .constrainAllUses(TII, TRI, RBI);
3359 return true;
3360}
3361
3362bool SPIRVInstructionSelector::selectSign(Register ResVReg,
3363 SPIRVTypeInst ResType,
3364 MachineInstr &I) const {
3365 assert(I.getNumOperands() == 3);
3366 assert(I.getOperand(2).isReg());
3367 MachineBasicBlock &BB = *I.getParent();
3368 Register InputRegister = I.getOperand(2).getReg();
3369 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3370 auto &DL = I.getDebugLoc();
3371
3372 if (!InputType)
3373 return diagnoseUnsupported(I, "Input Type could not be determined.");
3374
3375 bool IsFloatTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3376
3377 unsigned SignBitWidth = GR.getScalarOrVectorBitWidth(InputType);
3378 unsigned ResBitWidth = GR.getScalarOrVectorBitWidth(ResType);
3379
3380 bool NeedsConversion = IsFloatTy || SignBitWidth != ResBitWidth;
3381
3382 auto SignOpcode = IsFloatTy ? GL::FSign : GL::SSign;
3383 Register SignReg = NeedsConversion
3384 ? MRI->createVirtualRegister(&SPIRV::IDRegClass)
3385 : ResVReg;
3386
3387 BuildMI(BB, I, DL, TII.get(SPIRV::OpExtInst))
3388 .addDef(SignReg)
3389 .addUse(GR.getSPIRVTypeID(InputType))
3390 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
3391 .addImm(SignOpcode)
3392 .addUse(InputRegister)
3393 .constrainAllUses(TII, TRI, RBI);
3394
3395 if (NeedsConversion) {
3396 auto ConvertOpcode = IsFloatTy ? SPIRV::OpConvertFToS : SPIRV::OpSConvert;
3397 BuildMI(*I.getParent(), I, DL, TII.get(ConvertOpcode))
3398 .addDef(ResVReg)
3399 .addUse(GR.getSPIRVTypeID(ResType))
3400 .addUse(SignReg)
3401 .constrainAllUses(TII, TRI, RBI);
3402 }
3403
3404 return true;
3405}
3406
3407bool SPIRVInstructionSelector::selectWaveOpInst(Register ResVReg,
3408 SPIRVTypeInst ResType,
3409 MachineInstr &I,
3410 unsigned Opcode) const {
3411 MachineBasicBlock &BB = *I.getParent();
3412 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3413
3414 auto BMI = BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
3415 .addDef(ResVReg)
3416 .addUse(GR.getSPIRVTypeID(ResType))
3417 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I,
3418 IntTy, TII, !STI.isShader()));
3419
3420 for (unsigned J = 2; J < I.getNumOperands(); J++) {
3421 BMI.addUse(I.getOperand(J).getReg());
3422 }
3423
3424 BMI.constrainAllUses(TII, TRI, RBI);
3425 return true;
3426}
3427
3428bool SPIRVInstructionSelector::selectBarrierInst(MachineInstr &I,
3429 unsigned Scope,
3430 unsigned MemSem,
3431 bool WithGroupSync) const {
3432 auto BarrierType =
3433 WithGroupSync ? SPIRV::OpControlBarrier : SPIRV::OpMemoryBarrier;
3434
3435 MemSem |= SPIRV::MemorySemantics::AcquireRelease;
3436
3437 assert(((Scope != SPIRV::Scope::Workgroup) ||
3438 ((MemSem & SPIRV::MemorySemantics::WorkgroupMemory) > 0)) &&
3439 "Workgroup Scope must set WorkGroupMemory semantic "
3440 "in Barrier instruction");
3441
3442 assert(((Scope != SPIRV::Scope::Device) ||
3443 ((MemSem & SPIRV::MemorySemantics::UniformMemory) > 0 &&
3444 (MemSem & SPIRV::MemorySemantics::ImageMemory) > 0)) &&
3445 "Device Scope must set UniformMemory and ImageMemory semantic "
3446 "in Barrier instruction");
3447
3448 MachineBasicBlock &BB = *I.getParent();
3449 auto MI = BuildMI(BB, I, I.getDebugLoc(), TII.get(BarrierType));
3450
3451 // OpControlBarrier needs to also set Execution Scope
3452 if (WithGroupSync) {
3453 Register ExecReg = buildI32Constant(SPIRV::Scope::Workgroup, I);
3454 MI.addUse(ExecReg);
3455 }
3456
3457 Register ScopeReg = buildI32Constant(Scope, I);
3458 Register MemSemReg = buildI32Constant(MemSem, I);
3459
3460 MI.addUse(ScopeReg).addUse(MemSemReg).constrainAllUses(TII, TRI, RBI);
3461 return true;
3462}
3463
3464bool SPIRVInstructionSelector::selectWaveActiveCountBits(
3465 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3466
3467 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3468 SPIRVTypeInst BallotType = GR.getOrCreateSPIRVVectorType(IntTy, 4, I, TII);
3469 Register BallotReg = MRI->createVirtualRegister(GR.getRegClass(BallotType));
3470 if (!selectWaveOpInst(BallotReg, BallotType, I,
3471 SPIRV::OpGroupNonUniformBallot))
3472 return false;
3473
3474 MachineBasicBlock &BB = *I.getParent();
3475 BuildMI(BB, I, I.getDebugLoc(),
3476 TII.get(SPIRV::OpGroupNonUniformBallotBitCount))
3477 .addDef(ResVReg)
3478 .addUse(GR.getSPIRVTypeID(ResType))
3479 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3480 !STI.isShader()))
3481 .addImm(SPIRV::GroupOperation::Reduce)
3482 .addUse(BallotReg)
3483 .constrainAllUses(TII, TRI, RBI);
3484
3485 return true;
3486}
3487
3488bool SPIRVInstructionSelector::selectWaveActiveAllEqual(Register ResVReg,
3489 SPIRVTypeInst ResType,
3490 MachineInstr &I) const {
3491 MachineBasicBlock &BB = *I.getParent();
3492 const DebugLoc &DL = I.getDebugLoc();
3493
3494 // Input to the intrinsic
3495 Register InputReg = I.getOperand(2).getReg();
3496 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputReg);
3497
3498 // Determine if input is vector
3499 unsigned NumElems = GR.getScalarOrVectorComponentCount(InputType);
3500 bool IsVector = NumElems > 1;
3501
3502 // Determine element types
3503 SPIRVTypeInst ElemInputType = GR.getScalarOrVectorComponentType(InputType);
3504 SPIRVTypeInst ElemBoolType = GR.getScalarOrVectorComponentType(ResType);
3505
3506 // Subgroup scope constant
3507 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3508 Register ScopeConst = GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy,
3509 TII, !STI.isShader());
3510
3511 // Scalar case
3512 if (!IsVector) {
3513 return selectWaveOpInst(ResVReg, ElemBoolType, I,
3514 SPIRV::OpGroupNonUniformAllEqual);
3515 }
3516
3517 // Vector case
3518 SmallVector<Register, 4> ElementResults;
3519 ElementResults.reserve(NumElems);
3520
3521 for (unsigned Idx = 0; Idx < NumElems; ++Idx) {
3522 // Extract element
3523 Register ElemInput = InputReg;
3524 Register Extracted =
3525 MRI->createVirtualRegister(GR.getRegClass(ElemInputType));
3526
3527 BuildMI(BB, I, DL, TII.get(SPIRV::OpCompositeExtract))
3528 .addDef(Extracted)
3529 .addUse(GR.getSPIRVTypeID(ElemInputType))
3530 .addUse(InputReg)
3531 .addImm(Idx)
3532 .constrainAllUses(TII, TRI, RBI);
3533
3534 ElemInput = Extracted;
3535
3536 // Emit per-element AllEqual
3537 Register ElemResult =
3538 MRI->createVirtualRegister(GR.getRegClass(ElemBoolType));
3539
3540 BuildMI(BB, I, DL, TII.get(SPIRV::OpGroupNonUniformAllEqual))
3541 .addDef(ElemResult)
3542 .addUse(GR.getSPIRVTypeID(ElemBoolType))
3543 .addUse(ScopeConst)
3544 .addUse(ElemInput)
3545 .constrainAllUses(TII, TRI, RBI);
3546
3547 ElementResults.push_back(ElemResult);
3548 }
3549
3550 // Reconstruct vector<bool>
3551 auto MIB = BuildMI(BB, I, DL, TII.get(SPIRV::OpCompositeConstruct))
3552 .addDef(ResVReg)
3553 .addUse(GR.getSPIRVTypeID(ResType));
3554 for (Register R : ElementResults)
3555 MIB.addUse(R);
3556
3557 MIB.constrainAllUses(TII, TRI, RBI);
3558
3559 return true;
3560}
3561
3562bool SPIRVInstructionSelector::selectWavePrefixBitCount(Register ResVReg,
3563 SPIRVTypeInst ResType,
3564 MachineInstr &I) const {
3565
3566 assert(I.getNumOperands() == 3);
3567
3568 auto Op = I.getOperand(2);
3569 assert(Op.isReg());
3570
3571 MachineBasicBlock &BB = *I.getParent();
3572 DebugLoc DL = I.getDebugLoc();
3573
3574 Register InputRegister = Op.getReg();
3575 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3576
3577 if (!InputType)
3578 return diagnoseUnsupported(I, "Input Type could not be determined.");
3579
3580 if (InputType->getOpcode() != SPIRV::OpTypeBool)
3581 return diagnoseUnsupported(I, "WavePrefixBitCount requires boolean input");
3582
3583 // Types
3584 SPIRVTypeInst Int32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3585
3586 // Ballot result type: vector<uint32>
3587 // Match DXC: %v4uint for Subgroup size
3588 SPIRVTypeInst BallotTy = GR.getOrCreateSPIRVVectorType(Int32Ty, 4, I, TII);
3589
3590 // Create a vreg for the ballot result
3591 Register BallotVReg = MRI->createVirtualRegister(&SPIRV::IDRegClass);
3592
3593 // 1. OpGroupNonUniformBallot
3594 BuildMI(BB, I, DL, TII.get(SPIRV::OpGroupNonUniformBallot))
3595 .addDef(BallotVReg)
3596 .addUse(GR.getSPIRVTypeID(BallotTy))
3597 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, Int32Ty, TII))
3598 .addUse(InputRegister)
3599 .constrainAllUses(TII, TRI, RBI);
3600
3601 // 2. OpGroupNonUniformBallotBitCount
3602 BuildMI(BB, I, DL, TII.get(SPIRV::OpGroupNonUniformBallotBitCount))
3603 .addDef(ResVReg)
3604 .addUse(GR.getSPIRVTypeID(ResType))
3605 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, Int32Ty, TII))
3606 .addImm(SPIRV::GroupOperation::ExclusiveScan)
3607 .addUse(BallotVReg)
3608 .constrainAllUses(TII, TRI, RBI);
3609
3610 return true;
3611}
3612
3613bool SPIRVInstructionSelector::selectWaveReduceMax(Register ResVReg,
3614 SPIRVTypeInst ResType,
3615 MachineInstr &I,
3616 bool IsUnsigned) const {
3617 return selectWaveReduce(
3618 ResVReg, ResType, I, IsUnsigned,
3619 [&](Register InputRegister, bool IsUnsigned) {
3620 const bool IsFloatTy =
3621 GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3622 const auto IntOp = IsUnsigned ? SPIRV::OpGroupNonUniformUMax
3623 : SPIRV::OpGroupNonUniformSMax;
3624 return IsFloatTy ? SPIRV::OpGroupNonUniformFMax : IntOp;
3625 });
3626}
3627
3628bool SPIRVInstructionSelector::selectWaveReduceMin(Register ResVReg,
3629 SPIRVTypeInst ResType,
3630 MachineInstr &I,
3631 bool IsUnsigned) const {
3632 return selectWaveReduce(
3633 ResVReg, ResType, I, IsUnsigned,
3634 [&](Register InputRegister, bool IsUnsigned) {
3635 const bool IsFloatTy =
3636 GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat);
3637 const auto IntOp = IsUnsigned ? SPIRV::OpGroupNonUniformUMin
3638 : SPIRV::OpGroupNonUniformSMin;
3639 return IsFloatTy ? SPIRV::OpGroupNonUniformFMin : IntOp;
3640 });
3641}
3642
3643bool SPIRVInstructionSelector::selectWaveReduceSum(Register ResVReg,
3644 SPIRVTypeInst ResType,
3645 MachineInstr &I) const {
3646 return selectWaveReduce(ResVReg, ResType, I, /*IsUnsigned*/ false,
3647 [&](Register InputRegister, bool IsUnsigned) {
3648 bool IsFloatTy = GR.isScalarOrVectorOfType(
3649 InputRegister, SPIRV::OpTypeFloat);
3650 return IsFloatTy ? SPIRV::OpGroupNonUniformFAdd
3651 : SPIRV::OpGroupNonUniformIAdd;
3652 });
3653}
3654
3655bool SPIRVInstructionSelector::selectWaveReduceProduct(Register ResVReg,
3656 SPIRVTypeInst ResType,
3657 MachineInstr &I) const {
3658 return selectWaveReduce(ResVReg, ResType, I, /*IsUnsigned*/ false,
3659 [&](Register InputRegister, bool IsUnsigned) {
3660 bool IsFloatTy = GR.isScalarOrVectorOfType(
3661 InputRegister, SPIRV::OpTypeFloat);
3662 return IsFloatTy ? SPIRV::OpGroupNonUniformFMul
3663 : SPIRV::OpGroupNonUniformIMul;
3664 });
3665}
3666
3667template <typename PickOpcodeFn>
3668bool SPIRVInstructionSelector::selectWaveReduce(
3669 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, bool IsUnsigned,
3670 PickOpcodeFn &&PickOpcode) const {
3671 assert(I.getNumOperands() == 3);
3672 assert(I.getOperand(2).isReg());
3673 MachineBasicBlock &BB = *I.getParent();
3674 Register InputRegister = I.getOperand(2).getReg();
3675 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3676
3677 if (!InputType)
3678 return diagnoseUnsupported(I, "Input Type could not be determined.");
3679
3680 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3681 const unsigned Opcode = PickOpcode(InputRegister, IsUnsigned);
3682 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
3683 .addDef(ResVReg)
3684 .addUse(GR.getSPIRVTypeID(ResType))
3685 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3686 !STI.isShader()))
3687 .addImm(SPIRV::GroupOperation::Reduce)
3688 .addUse(I.getOperand(2).getReg())
3689 .constrainAllUses(TII, TRI, RBI);
3690 return true;
3691}
3692
3693bool SPIRVInstructionSelector::selectWaveReduceOp(Register ResVReg,
3694 SPIRVTypeInst ResType,
3695 MachineInstr &I,
3696 unsigned Opcode) const {
3697 return selectWaveReduce(
3698 ResVReg, ResType, I, false,
3699 [&](Register InputRegister, bool IsUnsigned) { return Opcode; });
3700}
3701
3702bool SPIRVInstructionSelector::selectWaveExclusiveScanSum(
3703 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3704 return selectWaveExclusiveScan(ResVReg, ResType, I, /*IsUnsigned*/ false,
3705 [&](Register InputRegister, bool IsUnsigned) {
3706 bool IsFloatTy = GR.isScalarOrVectorOfType(
3707 InputRegister, SPIRV::OpTypeFloat);
3708 return IsFloatTy
3709 ? SPIRV::OpGroupNonUniformFAdd
3710 : SPIRV::OpGroupNonUniformIAdd;
3711 });
3712}
3713
3714bool SPIRVInstructionSelector::selectWaveExclusiveScanProduct(
3715 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
3716 return selectWaveExclusiveScan(ResVReg, ResType, I, /*IsUnsigned*/ false,
3717 [&](Register InputRegister, bool IsUnsigned) {
3718 bool IsFloatTy = GR.isScalarOrVectorOfType(
3719 InputRegister, SPIRV::OpTypeFloat);
3720 return IsFloatTy
3721 ? SPIRV::OpGroupNonUniformFMul
3722 : SPIRV::OpGroupNonUniformIMul;
3723 });
3724}
3725
3726template <typename PickOpcodeFn>
3727bool SPIRVInstructionSelector::selectWaveExclusiveScan(
3728 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, bool IsUnsigned,
3729 PickOpcodeFn &&PickOpcode) const {
3730 assert(I.getNumOperands() == 3);
3731 assert(I.getOperand(2).isReg());
3732 MachineBasicBlock &BB = *I.getParent();
3733 Register InputRegister = I.getOperand(2).getReg();
3734 SPIRVTypeInst InputType = GR.getSPIRVTypeForVReg(InputRegister);
3735
3736 if (!InputType)
3737 return diagnoseUnsupported(I, "Input Type could not be determined.");
3738
3739 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3740 const unsigned Opcode = PickOpcode(InputRegister, IsUnsigned);
3741 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
3742 .addDef(ResVReg)
3743 .addUse(GR.getSPIRVTypeID(ResType))
3744 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3745 !STI.isShader()))
3746 .addImm(SPIRV::GroupOperation::ExclusiveScan)
3747 .addUse(I.getOperand(2).getReg())
3748 .constrainAllUses(TII, TRI, RBI);
3749 return true;
3750}
3751
3752bool SPIRVInstructionSelector::selectQuadSwap(Register ResVReg,
3753 SPIRVTypeInst ResType,
3754 MachineInstr &I,
3755 unsigned Direction) const {
3756 assert(I.getNumOperands() == 3);
3757 assert(I.getOperand(2).isReg());
3758 MachineBasicBlock &BB = *I.getParent();
3759 Register InputRegister = I.getOperand(2).getReg();
3760
3761 SPIRVTypeInst IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3762 bool ZeroAsNull = !STI.isShader();
3763 Register DirectionReg =
3764 GR.getOrCreateConstInt(Direction, I, IntTy, TII, ZeroAsNull);
3765 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpGroupNonUniformQuadSwap))
3766 .addDef(ResVReg)
3767 .addUse(GR.getSPIRVTypeID(ResType))
3768 .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII,
3769 ZeroAsNull))
3770 .addUse(InputRegister)
3771 .addUse(DirectionReg)
3772 .constrainAllUses(TII, TRI, RBI);
3773 return true;
3774}
3775
3776bool SPIRVInstructionSelector::selectBitreverseViaI32(Register ResVReg,
3777 SPIRVTypeInst ResType,
3778 MachineInstr &I,
3779 Register Op) const {
3780 SPIRVTypeInst Int32Type = GR.getOrCreateSPIRVIntegerType(32, I, TII);
3781 const unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
3782 Register ShiftConst =
3783 GR.getOrCreateConstInt(32 - BitWidth, I, Int32Type, TII);
3784 unsigned ShiftOp = SPIRV::OpShiftRightLogicalS;
3785
3786 const unsigned N = GR.getScalarOrVectorComponentCount(ResType);
3787 const unsigned ExtendOpcode = GR.isScalarOrVectorSigned(ResType)
3788 ? SPIRV::OpSConvert
3789 : SPIRV::OpUConvert;
3790
3791 if (N > 1) {
3792 Int32Type = GR.getOrCreateSPIRVVectorType(Int32Type, N, I, TII);
3793 ShiftOp = SPIRV::OpShiftRightLogicalV;
3794
3795 // Vector shifts require a composite constant
3796 const Register CompositeReg =
3797 MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3798 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
3799 TII.get(SPIRV::OpConstantComposite))
3800 .addDef(CompositeReg)
3801 .addUse(GR.getSPIRVTypeID(Int32Type));
3802 for (unsigned It = 0; It < N; ++It)
3803 MIB.addUse(ShiftConst);
3804 MIB.constrainAllUses(TII, TRI, RBI);
3805
3806 ShiftConst = CompositeReg;
3807 }
3808
3809 // Converts the input to i32 (or vector of i32)
3810 Register ExtReg = MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3811 if (!selectOpWithSrcs(ExtReg, Int32Type, I, {Op}, ExtendOpcode))
3812 return false;
3813
3814 // Perform bitreverse on the i32 value
3815 Register BitrevReg = MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3816 if (!selectBitreverseNative(BitrevReg, Int32Type, I, ExtReg))
3817 return false;
3818
3819 // Shift the bit-reversed value to get the final result.
3820 Register ShiftReg = MRI->createVirtualRegister(GR.getRegClass(Int32Type));
3821 if (!selectOpWithSrcs(ShiftReg, Int32Type, I, {BitrevReg, ShiftConst},
3822 ShiftOp))
3823 return false;
3824
3825 // Finally, convert the result back.
3826 return selectOpWithSrcs(ResVReg, ResType, I, {ShiftReg}, ExtendOpcode);
3827}
3828
3829bool SPIRVInstructionSelector::handle64BitOverflow(
3830 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, Register SrcReg,
3831 unsigned int Opcode,
3832 std::function<bool(Register, SPIRVTypeInst, MachineInstr &, Register,
3833 unsigned)>
3834 CallbackFunction) const {
3835
3836 SPIRVTypeInst BaseType = GR.retrieveScalarOrVectorIntType(ResType);
3837 assert(BaseType->getOpcode() == SPIRV::OpTypeInt &&
3838 "handle64BitOverflow should only be used for integer types");
3839 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
3840 assert(ComponentCount < 5 && "Vec 5+ will generate invalid SPIR-V ops");
3841
3842 MachineIRBuilder MIRBuilder(I);
3843 SPIRVTypeInst I64Type = GR.getOrCreateSPIRVIntegerType(64, MIRBuilder);
3844 SPIRVTypeInst I64x2Type =
3845 GR.getOrCreateSPIRVVectorType(I64Type, 2, MIRBuilder, false);
3846 SPIRVTypeInst Vec2ResType =
3847 GR.getOrCreateSPIRVVectorType(BaseType, 2, MIRBuilder, false);
3848
3849 std::vector<Register> PartialRegs;
3850
3851 unsigned CurrentComponent = 0;
3852 for (; CurrentComponent + 1 < ComponentCount; CurrentComponent += 2) {
3853 Register PopCountResult =
3854 MRI->createVirtualRegister(GR.getRegClass(I64x2Type));
3855
3856 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
3857 TII.get(SPIRV::OpVectorShuffle))
3858 .addDef(PopCountResult)
3859 .addUse(GR.getSPIRVTypeID(I64x2Type))
3860 .addUse(SrcReg)
3861 .addUse(SrcReg)
3862 .addImm(CurrentComponent)
3863 .addImm(CurrentComponent + 1);
3864
3865 MIB.constrainAllUses(TII, TRI, RBI);
3866
3867 Register SubVecReg =
3868 MRI->createVirtualRegister(GR.getRegClass(Vec2ResType));
3869
3870 if (!CallbackFunction(SubVecReg, Vec2ResType, I, PopCountResult, Opcode))
3871 return false;
3872
3873 PartialRegs.push_back(SubVecReg);
3874 }
3875 // On odd component counts we need to handle one more component
3876 if (CurrentComponent != ComponentCount) {
3877 bool ZeroAsNull = !STI.isShader();
3878 Register FinalElemReg = MRI->createVirtualRegister(GR.getRegClass(I64Type));
3879 Register ConstIntLastIdx = GR.getOrCreateConstInt(
3880 ComponentCount - 1, I, BaseType, TII, ZeroAsNull);
3881
3882 if (!selectOpWithSrcs(FinalElemReg, I64Type, I, {SrcReg, ConstIntLastIdx},
3883 SPIRV::OpVectorExtractDynamic))
3884 return false;
3885
3886 Register FinalElemResReg =
3887 MRI->createVirtualRegister(GR.getRegClass(BaseType));
3888
3889 if (!CallbackFunction(FinalElemResReg, BaseType, I, FinalElemReg, Opcode))
3890 return false;
3891
3892 PartialRegs.push_back(FinalElemResReg);
3893 }
3894 // Join all the resulting registers back into the return type in order
3895 // (ie i32x2, i32x2, i32x1 -> i32x5)
3896 return selectOpWithSrcs(ResVReg, ResType, I, PartialRegs,
3897 SPIRV::OpCompositeConstruct);
3898}
3899
3900bool SPIRVInstructionSelector::selectBitreverse64(Register ResVReg,
3901 SPIRVTypeInst ResType,
3902 MachineInstr &I,
3903 Register SrcReg) const {
3904 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
3905 if (ComponentCount > 2)
3906 return handle64BitOverflow(
3907 ResVReg, ResType, I, SrcReg, SPIRV::OpBitReverse,
3908 [this](Register R, SPIRVTypeInst T, MachineInstr &I, Register S,
3909 unsigned O) { return this->selectBitreverse64(R, T, I, S); });
3910
3911 MachineIRBuilder MIRBuilder(I);
3912
3913 SPIRVTypeInst I32Type = GR.getOrCreateSPIRVIntegerType(32, MIRBuilder);
3914 SPIRVTypeInst VecI32Type = GR.getOrCreateSPIRVVectorType(
3915 I32Type, 2 * ComponentCount, MIRBuilder, /*IsSigned=*/false);
3916
3917 // Converts 64 bit into and array of 32 bit, containing 2 elements.
3918 Register Vec32 = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
3919 if (!selectOpWithSrcs(Vec32, VecI32Type, I, {SrcReg}, SPIRV::OpBitcast))
3920 return false;
3921
3922 // Apply bitreverse on each 32 bit lane
3923 Register Reverse32 = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
3924 if (!selectBitreverseNative(Reverse32, VecI32Type, I, Vec32))
3925 return false;
3926
3927 // Reversing a 64-bit value = reverse each 32-bit half AND swap them,
3928 // so the old High word becomes lane 0 (low) and old Low becomes lane 1
3929 // (high).
3930 Register SwappedVec = MRI->createVirtualRegister(GR.getRegClass(VecI32Type));
3931 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
3932 TII.get(SPIRV::OpVectorShuffle))
3933 .addDef(SwappedVec)
3934 .addUse(GR.getSPIRVTypeID(VecI32Type))
3935 .addUse(Reverse32)
3936 .addUse(Reverse32);
3937 for (unsigned J = 0; J < ComponentCount; ++J) {
3938 MIB.addImm(2 * J + 1);
3939 MIB.addImm(2 * J);
3940 }
3941 MIB.constrainAllUses(TII, TRI, RBI);
3942
3943 // Groups 32 bit vector back to 64 bit scalar.
3944 return selectOpWithSrcs(ResVReg, ResType, I, {SwappedVec}, SPIRV::OpBitcast);
3945}
3946
3947bool SPIRVInstructionSelector::selectBitreverseNative(Register ResVReg,
3948 SPIRVTypeInst ResType,
3949 MachineInstr &I,
3950 Register Op) const {
3951 MachineBasicBlock &BB = *I.getParent();
3952 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpBitReverse))
3953 .addDef(ResVReg)
3954 .addUse(GR.getSPIRVTypeID(ResType))
3955 .addUse(Op)
3956 .constrainAllUses(TII, TRI, RBI);
3957 return true;
3958}
3959
3960bool SPIRVInstructionSelector::selectBitreverse(Register ResVReg,
3961 SPIRVTypeInst ResType,
3962 MachineInstr &I) const {
3963 Register OpReg = I.getOperand(1).getReg();
3964
3965 // TODO: Fix shader behavior in case of VK_KHR_maintenance9 extension is set
3966 if (STI.isShader()) {
3967 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
3968 switch (GR.getScalarOrVectorBitWidth(OpType)) {
3969 case 8:
3970 case 16:
3971 case 24:
3972 return selectBitreverseViaI32(ResVReg, ResType, I, OpReg);
3973 case 32:
3974 return selectBitreverseNative(ResVReg, ResType, I, OpReg);
3975 case 64:
3976 return selectBitreverse64(ResVReg, ResType, I, OpReg);
3977 }
3978 return SPIRVInstructionSelector::diagnoseUnsupported(
3979 I, "G_BITREVERSE only support 16,32,64 bits.");
3980 }
3981
3982 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_bit_instructions))
3983 return selectBitreverseNative(ResVReg, ResType, I, OpReg);
3984
3985 // Expansion bitreverse using bit manipulation operations
3986 // Algo: https://graphics.stanford.edu/~seander/bithacks.html#ReverseParallel
3987 const unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
3988 // TODO: add support for any bit width and bitwidth more than 64.
3989 if (BitWidth > 64 || !isPowerOf2_32(BitWidth))
3990 return false;
3991
3992 const unsigned N = GR.getScalarOrVectorComponentCount(ResType);
3993
3994 unsigned AndOp = SPIRV::OpBitwiseAndS;
3995 unsigned OrOp = SPIRV::OpBitwiseOrS;
3996 unsigned ShlOp = SPIRV::OpShiftLeftLogicalS;
3997 unsigned ShrOp = SPIRV::OpShiftRightLogicalS;
3998 if (N > 1) {
3999 AndOp = SPIRV::OpBitwiseAndV;
4000 OrOp = SPIRV::OpBitwiseOrV;
4001 ShlOp = SPIRV::OpShiftLeftLogicalV;
4002 ShrOp = SPIRV::OpShiftRightLogicalV;
4003 }
4004
4005 // Helper, one swap per step: ((input>>shift)&mask)|((input&mask)<<shift),
4006 // RPN: input shift >> mask & input mask & shift << |
4007 auto SwapBits = [&](const Register Input, const uint64_t Mask,
4008 const unsigned Shift) -> Register {
4009 auto CreateConst = [&](const uint64_t Value) -> Register {
4010 if (N == 1)
4011 return GR.getOrCreateConstInt(
4012 Value, I, GR.retrieveScalarOrVectorIntType(ResType), TII);
4013 return GR.getOrCreateConstVector(Value, I, ResType, TII);
4014 };
4015
4016 Register MaskReg = CreateConst(Mask);
4017 Register ShiftReg = CreateConst(Shift);
4018 Register T1 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4019 Register T2 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4020 Register T3 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4021 Register T4 = MRI->createVirtualRegister(GR.getRegClass(ResType));
4022 Register Result = MRI->createVirtualRegister(GR.getRegClass(ResType));
4023
4024 if (!selectOpWithSrcs(T1, ResType, I, {Input, ShiftReg}, ShrOp) ||
4025 !selectOpWithSrcs(T2, ResType, I, {T1, MaskReg}, AndOp) ||
4026 !selectOpWithSrcs(T3, ResType, I, {Input, MaskReg}, AndOp) ||
4027 !selectOpWithSrcs(T4, ResType, I, {T3, ShiftReg}, ShlOp) ||
4028 !selectOpWithSrcs(Result, ResType, I, {T2, T4}, OrOp))
4029 return Register();
4030
4031 return Result;
4032 };
4033
4034 unsigned Shift = BitWidth;
4035 Register Result = OpReg;
4036 uint64_t Mask = ~0ull;
4037 while ((Shift >>= 1) > 0) {
4038 Mask ^= (Mask << Shift);
4039 Result = SwapBits(Result, Mask, Shift);
4040 if (!Result.isValid())
4041 return false;
4042 }
4043
4044 return BuildCOPY(ResVReg, Result, I);
4045}
4046
4047bool SPIRVInstructionSelector::selectFreeze(Register ResVReg,
4048 SPIRVTypeInst ResType,
4049 MachineInstr &I) const {
4050 assert(I.getOperand(0).isReg() && I.getOperand(1).isReg() &&
4051 "G_FREEZE must define and use a register");
4052 Register OpReg = I.getOperand(1).getReg();
4053
4054 // With SPV_KHR_poison_freeze, lower `freeze` to OpFreezeKHR.
4055 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_poison_freeze)) {
4056 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpFreezeKHR))
4057 .addDef(ResVReg)
4058 .addUse(GR.getSPIRVTypeID(ResType))
4059 .addUse(OpReg)
4060 .constrainAllUses(TII, TRI, RBI);
4061 return true;
4062 }
4063
4064 // There is no way to implement `freeze` correctly without support on SPIR-V
4065 // standard side, but we may at least address a simple (static) case when
4066 // undef/poison value presence is obvious. The main benefit of even
4067 // incomplete `freeze` support is preventing of translation from crashing due
4068 // to lack of support on legalization and instruction selection steps.
4069 if (MachineInstr *Def = MRI->getVRegDef(OpReg)) {
4070 if (Def->getOpcode() == TargetOpcode::COPY)
4071 Def = MRI->getVRegDef(Def->getOperand(1).getReg());
4072 Register Reg;
4073 switch (Def->getOpcode()) {
4074 case SPIRV::ASSIGN_TYPE:
4075 if (MachineInstr *AssignToDef =
4076 MRI->getVRegDef(Def->getOperand(1).getReg())) {
4077 if (AssignToDef->getOpcode() == TargetOpcode::G_IMPLICIT_DEF)
4078 Reg = Def->getOperand(2).getReg();
4079 }
4080 break;
4081 case SPIRV::OpUndef:
4082 Reg = Def->getOperand(1).getReg();
4083 break;
4084 }
4085 unsigned DestOpCode;
4086 if (Reg.isValid()) {
4087 DestOpCode = SPIRV::OpConstantNull;
4088 LLVM_DEBUG(dbgs() << "SPV_KHR_poison_freeze is not enabled. freeze of a "
4089 "static undef/poison lowered to OpConstantNull\n");
4090 } else {
4091 DestOpCode = TargetOpcode::COPY;
4092 Reg = OpReg;
4093 LLVM_DEBUG(dbgs() << "SPV_KHR_poison_freeze is not enabled. freeze "
4094 "skipped, lowered as a copy of the operand\n");
4095 }
4096 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(DestOpCode))
4097 .addDef(I.getOperand(0).getReg())
4098 .addUse(Reg)
4099 .constrainAllUses(TII, TRI, RBI);
4100 return true;
4101 }
4102 return false;
4103}
4104
4105bool SPIRVInstructionSelector::selectBuildVector(Register ResVReg,
4106 SPIRVTypeInst ResType,
4107 MachineInstr &I) const {
4108 unsigned N = 0;
4109 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4110 N = GR.getScalarOrVectorComponentCount(ResType);
4111 else if (ResType->getOpcode() == SPIRV::OpTypeArray)
4112 N = getArrayComponentCount(MRI, ResType);
4113 else
4114 report_fatal_error("Cannot select G_BUILD_VECTOR with a non-vector result");
4115 if (I.getNumExplicitOperands() - I.getNumExplicitDefs() != N)
4116 report_fatal_error("G_BUILD_VECTOR and the result type are inconsistent");
4117
4118 // check if we may construct a constant vector
4119 bool IsConst = true;
4120 for (unsigned i = I.getNumExplicitDefs();
4121 i < I.getNumExplicitOperands() && IsConst; ++i)
4122 if (!isConstReg(MRI, I.getOperand(i).getReg()))
4123 IsConst = false;
4124
4125 if (!IsConst && N < 2)
4126 return diagnoseUnsupported(
4127 I, "There must be at least two constituent operands in a vector");
4128
4129 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
4130
4131 bool IsNullVector = IsConst && !STI.isShader();
4132 for (unsigned i = I.getNumExplicitDefs();
4133 i < I.getNumExplicitOperands() && IsNullVector; ++i) {
4134 MachineInstr *Def = getDef(I.getOperand(i), MRI);
4135 IsNullVector = Def && isNullOrNullSplat(*Def, *MRI);
4136 }
4137
4138 if (IsNullVector) {
4139 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
4140 .addDef(ResVReg)
4141 .addUse(GR.getSPIRVTypeID(ResType))
4142 .constrainAllUses(TII, TRI, RBI);
4143 return true;
4144 }
4145
4146 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4147 TII.get(IsConst ? SPIRV::OpConstantComposite
4148 : SPIRV::OpCompositeConstruct))
4149 .addDef(ResVReg)
4150 .addUse(GR.getSPIRVTypeID(ResType));
4151 for (unsigned i = I.getNumExplicitDefs(); i < I.getNumExplicitOperands(); ++i)
4152 MIB.addUse(I.getOperand(i).getReg());
4153 MIB.constrainAllUses(TII, TRI, RBI);
4154 return true;
4155}
4156
4157bool SPIRVInstructionSelector::selectSplatVector(Register ResVReg,
4158 SPIRVTypeInst ResType,
4159 MachineInstr &I) const {
4160 unsigned N = 0;
4161 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4162 N = GR.getScalarOrVectorComponentCount(ResType);
4163 else if (ResType->getOpcode() == SPIRV::OpTypeArray)
4164 N = getArrayComponentCount(MRI, ResType);
4165 else
4166 report_fatal_error("Cannot select G_SPLAT_VECTOR with a non-vector result");
4167
4168 unsigned OpIdx = I.getNumExplicitDefs();
4169 if (!I.getOperand(OpIdx).isReg())
4170 report_fatal_error("Unexpected argument in G_SPLAT_VECTOR");
4171
4172 // check if we may construct a constant vector
4173 Register OpReg = I.getOperand(OpIdx).getReg();
4174 bool IsConst = isConstReg(MRI, OpReg);
4175
4176 if (!IsConst && N < 2)
4177 return diagnoseUnsupported(
4178 I, "There must be at least two constituent operands in a vector");
4179
4180 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
4181 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4182 TII.get(IsConst ? SPIRV::OpConstantComposite
4183 : SPIRV::OpCompositeConstruct))
4184 .addDef(ResVReg)
4185 .addUse(GR.getSPIRVTypeID(ResType));
4186 for (unsigned i = 0; i < N; ++i)
4187 MIB.addUse(OpReg);
4188 MIB.constrainAllUses(TII, TRI, RBI);
4189 return true;
4190}
4191
4192bool SPIRVInstructionSelector::selectConcatVectors(Register ResVReg,
4193 SPIRVTypeInst ResType,
4194 MachineInstr &I) const {
4195 // Implement G_CONCAT_VECTORS using OpCompositeConstruct, which allows vector
4196 // constituents that share the result's component type to be
4197 // concatenated in operand order.
4198 if (ResType->getOpcode() != SPIRV::OpTypeVector)
4199 report_fatal_error(
4200 "Cannot select G_CONCAT_VECTORS with a non-vector result");
4201
4202 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4203 TII.get(SPIRV::OpCompositeConstruct))
4204 .addDef(ResVReg)
4205 .addUse(GR.getSPIRVTypeID(ResType));
4206 for (unsigned OpIdx = I.getNumExplicitDefs();
4207 OpIdx < I.getNumExplicitOperands(); ++OpIdx)
4208 MIB.addUse(I.getOperand(OpIdx).getReg());
4209 MIB.constrainAllUses(TII, TRI, RBI);
4210 return true;
4211}
4212
4213bool SPIRVInstructionSelector::selectDiscard(Register ResVReg,
4214 SPIRVTypeInst ResType,
4215 MachineInstr &I) const {
4216
4217 unsigned Opcode;
4218
4219 if (STI.canUseExtension(
4220 SPIRV::Extension::SPV_EXT_demote_to_helper_invocation) ||
4221 STI.isAtLeastSPIRVVer(llvm::VersionTuple(1, 6))) {
4222 Opcode = SPIRV::OpDemoteToHelperInvocation;
4223 } else {
4224 Opcode = SPIRV::OpKill;
4225 // OpKill must be the last operation of any basic block.
4226 if (MachineInstr *NextI = I.getNextNode()) {
4227 GR.invalidateMachineInstr(NextI);
4228 NextI->eraseFromParent();
4229 }
4230 }
4231
4232 MachineBasicBlock &BB = *I.getParent();
4233 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
4234 .constrainAllUses(TII, TRI, RBI);
4235 return true;
4236}
4237
4238bool SPIRVInstructionSelector::selectCmp(Register ResVReg,
4239 SPIRVTypeInst ResType, unsigned CmpOpc,
4240 MachineInstr &I) const {
4241 Register Cmp0 = I.getOperand(2).getReg();
4242 Register Cmp1 = I.getOperand(3).getReg();
4243 assert(GR.getSPIRVTypeForVReg(Cmp0)->getOpcode() ==
4244 GR.getSPIRVTypeForVReg(Cmp1)->getOpcode() &&
4245 "CMP operands should have the same type");
4246 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(CmpOpc))
4247 .addDef(ResVReg)
4248 .addUse(GR.getSPIRVTypeID(ResType))
4249 .addUse(Cmp0)
4250 .addUse(Cmp1)
4251 .setMIFlags(I.getFlags())
4252 .constrainAllUses(TII, TRI, RBI);
4253 return true;
4254}
4255
4256bool SPIRVInstructionSelector::selectICmp(Register ResVReg,
4257 SPIRVTypeInst ResType,
4258 MachineInstr &I) const {
4259 auto Pred = I.getOperand(1).getPredicate();
4260 unsigned CmpOpc;
4261
4262 Register CmpOperand = I.getOperand(2).getReg();
4263 if (GR.isScalarOfType(CmpOperand, SPIRV::OpTypePointer)) {
4264 CmpOpc = getPtrCmpOpcode(Pred);
4265 // OpPtrEqual/OpPtrNotEqual require both operands to share an identical
4266 // pointer type. If they are not OpBitcast is inserted.
4267 Register Op1 = I.getOperand(3).getReg();
4268 SPIRVTypeInst Ty0 = GR.getSPIRVTypeForVReg(CmpOperand);
4269 if (Ty0 != GR.getSPIRVTypeForVReg(Op1)) {
4270 Register NewOp1 = createVirtualRegister(Ty0, &GR, MRI, MRI->getMF());
4271 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpBitcast))
4272 .addDef(NewOp1)
4273 .addUse(GR.getSPIRVTypeID(Ty0))
4274 .addUse(Op1)
4275 .constrainAllUses(TII, TRI, RBI);
4276 I.getOperand(3).setReg(NewOp1);
4277 }
4278 } else if (GR.isScalarOrVectorOfType(CmpOperand, SPIRV::OpTypeBool))
4279 CmpOpc = getBoolCmpOpcode(Pred);
4280 else
4281 CmpOpc = getICmpOpcode(Pred);
4282 return selectCmp(ResVReg, ResType, CmpOpc, I);
4283}
4284
4285Register
4286SPIRVInstructionSelector::buildI32Constant(uint32_t Val, MachineInstr &I,
4287 SPIRVTypeInst ResType) const {
4288 Type *LLVMTy = IntegerType::get(GR.CurMF->getFunction().getContext(), 32);
4289 SPIRVTypeInst SpvI32Ty =
4290 ResType ? ResType : GR.getOrCreateSPIRVIntegerType(32, I, TII);
4291 // Find a constant in DT or build a new one.
4292 auto ConstInt = ConstantInt::get(LLVMTy, Val);
4293 Register NewReg = GR.find(ConstInt, GR.CurMF);
4294 if (!NewReg.isValid()) {
4295 NewReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
4296 MachineBasicBlock &BB = *I.getParent();
4297 MachineInstr *MI =
4298 Val == 0
4299 ? BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
4300 .addDef(NewReg)
4301 .addUse(GR.getSPIRVTypeID(SpvI32Ty))
4302 : BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantI))
4303 .addDef(NewReg)
4304 .addUse(GR.getSPIRVTypeID(SpvI32Ty))
4305 .addImm(APInt(32, Val).getZExtValue());
4306 constrainSelectedInstRegOperands(*MI, TII, TRI, RBI);
4307 GR.add(ConstInt, MI);
4308 }
4309 return NewReg;
4310}
4311
4312// Like buildI32Constant, but always inserts the constant definition in the
4313// entry block so it dominates all uses regardless of block ordering.
4314Register SPIRVInstructionSelector::buildI32ConstantInEntryBlock(
4315 uint32_t Val, MachineInstr &I, SPIRVTypeInst ResType) const {
4316 Type *LLVMTy = IntegerType::get(GR.CurMF->getFunction().getContext(), 32);
4317 SPIRVTypeInst SpvI32Ty =
4318 ResType ? ResType : GR.getOrCreateSPIRVIntegerType(32, I, TII);
4319 auto *ConstInt = ConstantInt::get(LLVMTy, Val);
4320 Register NewReg = GR.find(ConstInt, GR.CurMF);
4321 if (!NewReg.isValid()) {
4322 NewReg = MRI->createGenericVirtualRegister(LLT::scalar(64));
4323 auto InsertIt = getOpVariableMBBIt(*I.getMF());
4324 MachineBasicBlock &EntryBB = *InsertIt->getParent();
4325 MachineInstr *MI = nullptr;
4326 Register TypeReg = GR.getSPIRVTypeID(SpvI32Ty);
4327 DebugLoc DbgLoc = I.getDebugLoc();
4328 if (Val == 0) {
4329 MI = BuildMI(EntryBB, InsertIt, DbgLoc, TII.get(SPIRV::OpConstantNull))
4330 .addDef(NewReg)
4331 .addUse(TypeReg);
4332 } else {
4333 uint64_t ImmVal = APInt(32, Val).getZExtValue();
4334 MI = BuildMI(EntryBB, InsertIt, DbgLoc, TII.get(SPIRV::OpConstantI))
4335 .addDef(NewReg)
4336 .addUse(TypeReg)
4337 .addImm(ImmVal);
4338 }
4339 constrainSelectedInstRegOperands(*MI, TII, TRI, RBI);
4340 GR.add(ConstInt, MI);
4341 }
4342 return NewReg;
4343}
4344
4345bool SPIRVInstructionSelector::selectFCmp(Register ResVReg,
4346 SPIRVTypeInst ResType,
4347 MachineInstr &I) const {
4348 unsigned CmpOp = getFCmpOpcode(I.getOperand(1).getPredicate());
4349 return selectCmp(ResVReg, ResType, CmpOp, I);
4350}
4351
4352bool SPIRVInstructionSelector::selectExp10(Register ResVReg,
4353 SPIRVTypeInst ResType,
4354 MachineInstr &I) const {
4355 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
4356 return selectExtInst(ResVReg, ResType, I, CL::exp10);
4357 }
4358
4359 if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
4360 /// There is no exp10 in GLSL. Use exp10(x) = exp2(x * log2(10)) instead
4361 /// log2(10) ~= 3.3219280948874l
4362
4363 if (ResType->getOpcode() != SPIRV::OpTypeVector &&
4364 ResType->getOpcode() != SPIRV::OpTypeFloat)
4365 return false;
4366
4367 MachineIRBuilder MIRBuilder(I);
4368
4369 SPIRVTypeInst SpirvScalarType = GR.getScalarOrVectorComponentType(ResType);
4370
4371 // Match the literal precision to the scalar type so the OpConstant
4372 // literal does not contain non-zero high-order bits that would fail
4373 // SPIR-V validation when the type is narrower than 32 bits (e.g. half).
4374 APFloat ConstVal(3.3219280948873623);
4375 bool LosesInfo;
4376 ConstVal.convert(
4377 getZeroFP(GR.getTypeForSPIRVType(SpirvScalarType)).getSemantics(),
4378 APFloat::rmNearestTiesToEven, &LosesInfo);
4379 Register ConstReg =
4380 GR.buildConstantFP(ConstVal, MIRBuilder, SpirvScalarType);
4381 Register ArgReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
4382 auto Opcode = ResType->getOpcode() == SPIRV::OpTypeVector
4383 ? SPIRV::OpVectorTimesScalar
4384 : SPIRV::OpFMulS;
4385
4386 if (!selectOpWithSrcs(ArgReg, ResType, I,
4387 {I.getOperand(1).getReg(), ConstReg}, Opcode))
4388 return false;
4389 if (!selectExtInst(ResVReg, ResType, I,
4390 {{SPIRV::InstructionSet::GLSL_std_450, GL::Exp2}}, false,
4391 false, {ArgReg}))
4392 return false;
4393
4394 return true;
4395 }
4396
4397 return false;
4398}
4399
4400Register SPIRVInstructionSelector::buildZerosVal(SPIRVTypeInst ResType,
4401 MachineInstr &I) const {
4402 // OpenCL uses nulls for Zero. In HLSL we don't use null constants.
4403 bool ZeroAsNull = !STI.isShader();
4404 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4405 return GR.getOrCreateConstVector(0UL, I, ResType, TII, ZeroAsNull);
4406 return GR.getOrCreateConstInt(0, I, ResType, TII, ZeroAsNull);
4407}
4408
4409bool SPIRVInstructionSelector::isScalarOrVectorIntConstantZero(
4410 Register Reg) const {
4411 SPIRVTypeInst Type = GR.getSPIRVTypeForVReg(Reg);
4412 if (!Type)
4413 return false;
4414 SPIRVTypeInst CompType = GR.getScalarOrVectorComponentType(Type);
4415 if (!CompType || CompType->getOpcode() != SPIRV::OpTypeInt)
4416 return false;
4417
4418 auto IsZero = [this](Register Reg) {
4419 MachineInstr *Def = getDefInstrMaybeConstant(Reg, MRI);
4420 if (!Def)
4421 return false;
4422
4423 if (Def->getOpcode() == SPIRV::OpConstantNull)
4424 return true;
4425
4426 if (Def->getOpcode() == TargetOpcode::G_CONSTANT ||
4427 Def->getOpcode() == SPIRV::OpConstantI)
4428 return getIConstVal(Reg, MRI) == 0;
4429
4430 return false;
4431 };
4432
4433 if (IsZero(Reg))
4434 return true;
4435
4436 MachineInstr *Def = MRI->getVRegDef(Reg);
4437 if (!Def)
4438 return false;
4439
4440 if (Def->getOpcode() == TargetOpcode::G_BUILD_VECTOR ||
4441 (Def->getOpcode() == TargetOpcode::G_INTRINSIC_W_SIDE_EFFECTS &&
4442 cast<GIntrinsic>(Def)->getIntrinsicID() ==
4443 Intrinsic::spv_const_composite)) {
4444 unsigned StartOp = Def->getOpcode() == TargetOpcode::G_BUILD_VECTOR ? 1 : 2;
4445 for (unsigned i = StartOp; i < Def->getNumOperands(); ++i) {
4446 if (!IsZero(Def->getOperand(i).getReg()))
4447 return false;
4448 }
4449 return true;
4450 }
4451
4452 return false;
4453}
4454
4455Register SPIRVInstructionSelector::buildZerosValF(SPIRVTypeInst ResType,
4456 MachineInstr &I) const {
4457 // OpenCL uses nulls for Zero. In HLSL we don't use null constants.
4458 bool ZeroAsNull = !STI.isShader();
4459 APFloat VZero = getZeroFP(GR.getTypeForSPIRVType(ResType));
4460 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4461 return GR.getOrCreateConstVector(VZero, I, ResType, TII, ZeroAsNull);
4462 return GR.getOrCreateConstFP(VZero, I, ResType, TII, ZeroAsNull);
4463}
4464
4465Register SPIRVInstructionSelector::buildOnesValF(SPIRVTypeInst ResType,
4466 MachineInstr &I) const {
4467 // OpenCL uses nulls for Zero. In HLSL we don't use null constants.
4468 bool ZeroAsNull = !STI.isShader();
4469 APFloat VOne = getOneFP(GR.getTypeForSPIRVType(ResType));
4470 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4471 return GR.getOrCreateConstVector(VOne, I, ResType, TII, ZeroAsNull);
4472 return GR.getOrCreateConstFP(VOne, I, ResType, TII, ZeroAsNull);
4473}
4474
4475Register SPIRVInstructionSelector::buildOnesVal(bool AllOnes,
4476 SPIRVTypeInst ResType,
4477 MachineInstr &I) const {
4478 unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
4479 APInt One =
4480 AllOnes ? APInt::getAllOnes(BitWidth) : APInt::getOneBitSet(BitWidth, 0);
4481 if (ResType->getOpcode() == SPIRV::OpTypeVector)
4482 return GR.getOrCreateConstVector(One, I, ResType, TII);
4483 return GR.getOrCreateConstInt(One, I, ResType, TII);
4484}
4485
4486bool SPIRVInstructionSelector::selectSelect(Register ResVReg,
4487 SPIRVTypeInst ResType,
4488 MachineInstr &I) const {
4489 Register SelectFirstArg = I.getOperand(2).getReg();
4490 Register SelectSecondArg = I.getOperand(3).getReg();
4491 assert(ResType == GR.getSPIRVTypeForVReg(SelectFirstArg) &&
4492 ResType == GR.getSPIRVTypeForVReg(SelectSecondArg));
4493
4494 bool IsFloatTy =
4495 GR.isScalarOrVectorOfType(SelectFirstArg, SPIRV::OpTypeFloat);
4496 bool IsPtrTy =
4497 GR.isScalarOrVectorOfType(SelectFirstArg, SPIRV::OpTypePointer);
4498 bool IsVectorTy = GR.getSPIRVTypeForVReg(SelectFirstArg)->getOpcode() ==
4499 SPIRV::OpTypeVector;
4500
4501 bool IsScalarBool =
4502 GR.isScalarOfType(I.getOperand(1).getReg(), SPIRV::OpTypeBool);
4503 unsigned Opcode;
4504 if (IsVectorTy) {
4505 if (IsFloatTy) {
4506 Opcode = IsScalarBool ? SPIRV::OpSelectVFSCond : SPIRV::OpSelectVFVCond;
4507 } else if (IsPtrTy) {
4508 Opcode = IsScalarBool ? SPIRV::OpSelectVPSCond : SPIRV::OpSelectVPVCond;
4509 } else {
4510 Opcode = IsScalarBool ? SPIRV::OpSelectVISCond : SPIRV::OpSelectVIVCond;
4511 }
4512 } else {
4513 assert(IsScalarBool && "OpSelect with a scalar result requires a scalar "
4514 "boolean condition");
4515 if (IsFloatTy) {
4516 Opcode = SPIRV::OpSelectSFSCond;
4517 } else if (IsPtrTy) {
4518 Opcode = SPIRV::OpSelectSPSCond;
4519 } else {
4520 Opcode = SPIRV::OpSelectSISCond;
4521 }
4522 }
4523 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
4524 .addDef(ResVReg)
4525 .addUse(GR.getSPIRVTypeID(ResType))
4526 .addUse(I.getOperand(1).getReg())
4527 .addUse(SelectFirstArg)
4528 .addUse(SelectSecondArg)
4529 .constrainAllUses(TII, TRI, RBI);
4530 return true;
4531}
4532
4533// This function is used to extend a bool or a vector of bools into an integer
4534// or vector of integers.
4535bool SPIRVInstructionSelector::selectBoolToInt(Register ResVReg,
4536 SPIRVTypeInst ResType,
4537 Register BooleanVReg,
4538 MachineInstr &InsertAt,
4539 bool IsSigned) const {
4540 // To extend a bool, we need to use OpSelect between constants.
4541 Register ZeroReg = buildZerosVal(ResType, InsertAt);
4542 Register OneReg = buildOnesVal(IsSigned, ResType, InsertAt);
4543 bool IsScalarBool = GR.isScalarOfType(BooleanVReg, SPIRV::OpTypeBool);
4544 unsigned Opcode =
4545 IsScalarBool ? SPIRV::OpSelectSISCond : SPIRV::OpSelectVIVCond;
4546 BuildMI(*InsertAt.getParent(), InsertAt, InsertAt.getDebugLoc(),
4547 TII.get(Opcode))
4548 .addDef(ResVReg)
4549 .addUse(GR.getSPIRVTypeID(ResType))
4550 .addUse(BooleanVReg)
4551 .addUse(OneReg)
4552 .addUse(ZeroReg)
4553 .constrainAllUses(TII, TRI, RBI);
4554 return true;
4555}
4556
4557bool SPIRVInstructionSelector::selectIToF(Register ResVReg,
4558 SPIRVTypeInst ResType,
4559 MachineInstr &I, bool IsSigned,
4560 unsigned Opcode) const {
4561 Register SrcReg = I.getOperand(1).getReg();
4562 // We can convert bool value directly to float type without OpConvert*ToF,
4563 // however the translator generates OpSelect+OpConvert*ToF, so we do the same.
4564 if (GR.isScalarOrVectorOfType(I.getOperand(1).getReg(), SPIRV::OpTypeBool)) {
4565 unsigned BitWidth = GR.getScalarOrVectorBitWidth(ResType);
4566 SPIRVTypeInst TmpType = GR.getOrCreateSPIRVIntegerType(BitWidth, I, TII);
4567 if (ResType->getOpcode() == SPIRV::OpTypeVector) {
4568 const unsigned NumElts = GR.getScalarOrVectorComponentCount(ResType);
4569 TmpType = GR.getOrCreateSPIRVVectorType(TmpType, NumElts, I, TII);
4570 }
4571 SrcReg = createVirtualRegister(TmpType, &GR, MRI, MRI->getMF());
4572 selectBoolToInt(SrcReg, TmpType, I.getOperand(1).getReg(), I, false);
4573 }
4574 return selectOpWithSrcs(ResVReg, ResType, I, {SrcReg}, Opcode);
4575}
4576
4577bool SPIRVInstructionSelector::selectExt(Register ResVReg,
4578 SPIRVTypeInst ResType, MachineInstr &I,
4579 bool IsSigned) const {
4580 Register SrcReg = I.getOperand(1).getReg();
4581 if (GR.isScalarOrVectorOfType(SrcReg, SPIRV::OpTypeBool))
4582 return selectBoolToInt(ResVReg, ResType, I.getOperand(1).getReg(), I,
4583 IsSigned);
4584
4585 SPIRVTypeInst SrcType = GR.getSPIRVTypeForVReg(SrcReg);
4586 if (ResType == SrcType)
4587 return BuildCOPY(ResVReg, SrcReg, I);
4588
4589 unsigned Opcode = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
4590 return selectUnOp(ResVReg, ResType, I, Opcode);
4591}
4592
4593bool SPIRVInstructionSelector::selectSUCmp(Register ResVReg,
4594 SPIRVTypeInst ResType,
4595 MachineInstr &I,
4596 bool IsSigned) const {
4597 MachineIRBuilder MIRBuilder(I);
4598 MachineRegisterInfo *MRI = MIRBuilder.getMRI();
4599 MachineBasicBlock &BB = *I.getParent();
4600 // Ensure we have bool.
4601 SPIRVTypeInst BoolType = GR.getOrCreateSPIRVBoolType(I, TII);
4602 unsigned N = GR.getScalarOrVectorComponentCount(ResType);
4603 if (N > 1)
4604 BoolType = GR.getOrCreateSPIRVVectorType(BoolType, N, I, TII);
4605 Register BoolTypeReg = GR.getSPIRVTypeID(BoolType);
4606 // Build less-than-equal and less-than.
4607 Register IsLessEqReg =
4608 createVirtualRegister(BoolType, &GR, MRI, MIRBuilder.getMF());
4609 BuildMI(BB, I, I.getDebugLoc(),
4610 TII.get(IsSigned ? SPIRV::OpSLessThanEqual : SPIRV::OpULessThanEqual))
4611 .addDef(IsLessEqReg)
4612 .addUse(BoolTypeReg)
4613 .addUse(I.getOperand(1).getReg())
4614 .addUse(I.getOperand(2).getReg())
4615 .constrainAllUses(TII, TRI, RBI);
4616 Register IsLessReg =
4617 createVirtualRegister(BoolType, &GR, MRI, MIRBuilder.getMF());
4618 BuildMI(BB, I, I.getDebugLoc(),
4619 TII.get(IsSigned ? SPIRV::OpSLessThan : SPIRV::OpULessThan))
4620 .addDef(IsLessReg)
4621 .addUse(BoolTypeReg)
4622 .addUse(I.getOperand(1).getReg())
4623 .addUse(I.getOperand(2).getReg())
4624 .constrainAllUses(TII, TRI, RBI);
4625 // Build selects.
4626 Register ResTypeReg = GR.getSPIRVTypeID(ResType);
4627 Register NegOneOrZeroReg =
4628 MRI->createVirtualRegister(GR.getRegClass(ResType));
4629 MRI->setType(NegOneOrZeroReg, LLT::scalar(64));
4630 GR.assignSPIRVTypeToVReg(ResType, NegOneOrZeroReg, MIRBuilder.getMF());
4631 unsigned SelectOpcode =
4632 N > 1 ? SPIRV::OpSelectVIVCond : SPIRV::OpSelectSISCond;
4633 BuildMI(BB, I, I.getDebugLoc(), TII.get(SelectOpcode))
4634 .addDef(NegOneOrZeroReg)
4635 .addUse(ResTypeReg)
4636 .addUse(IsLessReg)
4637 .addUse(buildOnesVal(true, ResType, I)) // -1
4638 .addUse(buildZerosVal(ResType, I))
4639 .constrainAllUses(TII, TRI, RBI);
4640 BuildMI(BB, I, I.getDebugLoc(), TII.get(SelectOpcode))
4641 .addDef(ResVReg)
4642 .addUse(ResTypeReg)
4643 .addUse(IsLessEqReg)
4644 .addUse(NegOneOrZeroReg) // -1 or 0
4645 .addUse(buildOnesVal(false, ResType, I))
4646 .constrainAllUses(TII, TRI, RBI);
4647 return true;
4648}
4649
4650bool SPIRVInstructionSelector::selectIntToBool(Register IntReg,
4651 Register ResVReg,
4652 MachineInstr &I,
4653 SPIRVTypeInst IntTy,
4654 SPIRVTypeInst BoolTy) const {
4655 // To truncate to a bool, we use OpBitwiseAnd 1 and OpINotEqual to zero.
4656 Register BitIntReg = createVirtualRegister(IntTy, &GR, MRI, MRI->getMF());
4657 bool IsVectorTy = IntTy->getOpcode() == SPIRV::OpTypeVector;
4658 unsigned Opcode = IsVectorTy ? SPIRV::OpBitwiseAndV : SPIRV::OpBitwiseAndS;
4659 Register Zero = buildZerosVal(IntTy, I);
4660 Register One = buildOnesVal(false, IntTy, I);
4661 MachineBasicBlock &BB = *I.getParent();
4662 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
4663 .addDef(BitIntReg)
4664 .addUse(GR.getSPIRVTypeID(IntTy))
4665 .addUse(IntReg)
4666 .addUse(One)
4667 .constrainAllUses(TII, TRI, RBI);
4668 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpINotEqual))
4669 .addDef(ResVReg)
4670 .addUse(GR.getSPIRVTypeID(BoolTy))
4671 .addUse(BitIntReg)
4672 .addUse(Zero)
4673 .constrainAllUses(TII, TRI, RBI);
4674 return true;
4675}
4676
4677bool SPIRVInstructionSelector::selectTrunc(Register ResVReg,
4678 SPIRVTypeInst ResType,
4679 MachineInstr &I) const {
4680 Register IntReg = I.getOperand(1).getReg();
4681 const SPIRVTypeInst ArgType = GR.getSPIRVTypeForVReg(IntReg);
4682 if (GR.isScalarOrVectorOfType(ResVReg, SPIRV::OpTypeBool))
4683 return selectIntToBool(IntReg, ResVReg, I, ArgType, ResType);
4684 if (ArgType == ResType)
4685 return BuildCOPY(ResVReg, IntReg, I);
4686 bool IsSigned = GR.isScalarOrVectorSigned(ResType);
4687 unsigned Opcode = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
4688 return selectUnOp(ResVReg, ResType, I, Opcode);
4689}
4690
4691bool SPIRVInstructionSelector::selectConst(Register ResVReg,
4692 SPIRVTypeInst ResType,
4693 MachineInstr &I) const {
4694 unsigned Opcode = I.getOpcode();
4695 unsigned TpOpcode = ResType->getOpcode();
4696 Register Reg;
4697 if (TpOpcode == SPIRV::OpTypePointer || TpOpcode == SPIRV::OpTypeEvent) {
4698 assert(Opcode == TargetOpcode::G_CONSTANT &&
4699 I.getOperand(1).getCImm()->isZero());
4700 MachineBasicBlock &DepMBB = I.getMF()->front();
4701 MachineIRBuilder MIRBuilder(DepMBB, DepMBB.getFirstNonPHI());
4702 Reg = GR.getOrCreateConstNullPtr(MIRBuilder, ResType);
4703 } else if (Opcode == TargetOpcode::G_FCONSTANT) {
4704 Reg = GR.getOrCreateConstFP(I.getOperand(1).getFPImm()->getValue(), I,
4705 ResType, TII, !STI.isShader());
4706 } else {
4707 Reg = GR.getOrCreateConstInt(I.getOperand(1).getCImm()->getValue(), I,
4708 ResType, TII, !STI.isShader());
4709 }
4710 return Reg == ResVReg ? true : BuildCOPY(ResVReg, Reg, I);
4711}
4712
4713bool SPIRVInstructionSelector::selectOpUndef(Register ResVReg,
4714 SPIRVTypeInst ResType,
4715 MachineInstr &I) const {
4716 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
4717 .addDef(ResVReg)
4718 .addUse(GR.getSPIRVTypeID(ResType))
4719 .constrainAllUses(TII, TRI, RBI);
4720 return true;
4721}
4722
4723bool SPIRVInstructionSelector::selectInsertVal(Register ResVReg,
4724 SPIRVTypeInst ResType,
4725 MachineInstr &I) const {
4726 MachineBasicBlock &BB = *I.getParent();
4727 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeInsert))
4728 .addDef(ResVReg)
4729 .addUse(GR.getSPIRVTypeID(ResType))
4730 // object to insert
4731 .addUse(I.getOperand(3).getReg())
4732 // composite to insert into
4733 .addUse(I.getOperand(2).getReg());
4734 for (unsigned i = 4; i < I.getNumOperands(); i++)
4735 MIB.addImm(foldImm(I.getOperand(i), MRI));
4736 MIB.constrainAllUses(TII, TRI, RBI);
4737 return true;
4738}
4739
4740bool SPIRVInstructionSelector::selectExtractVal(Register ResVReg,
4741 SPIRVTypeInst ResType,
4742 MachineInstr &I) const {
4743 Type *MaybeResTy = nullptr;
4744 StringRef ResName;
4745 if (GR.findValueAttrs(&I, MaybeResTy, ResName) &&
4746 MaybeResTy != GR.getTypeForSPIRVType(ResType)) {
4747 assert((!MaybeResTy || MaybeResTy->isAggregateType()) &&
4748 "Expected aggregate type for extractv instruction");
4749 ResType = GR.getOrCreateSPIRVType(MaybeResTy, I,
4750 SPIRV::AccessQualifier::ReadWrite, false);
4751 GR.assignSPIRVTypeToVReg(ResType, ResVReg, *I.getMF());
4752 }
4753 MachineBasicBlock &BB = *I.getParent();
4754 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
4755 .addDef(ResVReg)
4756 .addUse(GR.getSPIRVTypeID(ResType))
4757 .addUse(I.getOperand(2).getReg());
4758 for (unsigned i = 3; i < I.getNumOperands(); i++)
4759 MIB.addImm(foldImm(I.getOperand(i), MRI));
4760 MIB.constrainAllUses(TII, TRI, RBI);
4761 return true;
4762}
4763
4764bool SPIRVInstructionSelector::selectInsertElt(Register ResVReg,
4765 SPIRVTypeInst ResType,
4766 MachineInstr &I) const {
4767 if (getImm(I.getOperand(4), MRI))
4768 return selectInsertVal(ResVReg, ResType, I);
4769 MachineBasicBlock &BB = *I.getParent();
4770 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorInsertDynamic))
4771 .addDef(ResVReg)
4772 .addUse(GR.getSPIRVTypeID(ResType))
4773 .addUse(I.getOperand(2).getReg())
4774 .addUse(I.getOperand(3).getReg())
4775 .addUse(I.getOperand(4).getReg())
4776 .constrainAllUses(TII, TRI, RBI);
4777 return true;
4778}
4779
4780bool SPIRVInstructionSelector::selectExtractElt(Register ResVReg,
4781 SPIRVTypeInst ResType,
4782 MachineInstr &I) const {
4783 if (getImm(I.getOperand(3), MRI))
4784 return selectExtractVal(ResVReg, ResType, I);
4785 MachineBasicBlock &BB = *I.getParent();
4786 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVectorExtractDynamic))
4787 .addDef(ResVReg)
4788 .addUse(GR.getSPIRVTypeID(ResType))
4789 .addUse(I.getOperand(2).getReg())
4790 .addUse(I.getOperand(3).getReg())
4791 .constrainAllUses(TII, TRI, RBI);
4792 return true;
4793}
4794
4795bool SPIRVInstructionSelector::selectGEP(Register ResVReg,
4796 SPIRVTypeInst ResType,
4797 MachineInstr &I) const {
4798 const bool IsGEPInBounds = I.getOperand(2).getImm();
4799
4800 // OpAccessChain could be used for OpenCL, but the SPIRV-LLVM Translator only
4801 // relies on PtrAccessChain, so we'll try not to deviate. For Vulkan however,
4802 // we have to use Op[InBounds]AccessChain.
4803 const unsigned Opcode = STI.isLogicalSPIRV()
4804 ? (IsGEPInBounds ? SPIRV::OpInBoundsAccessChain
4805 : SPIRV::OpAccessChain)
4806 : (IsGEPInBounds ? SPIRV::OpInBoundsPtrAccessChain
4807 : SPIRV::OpPtrAccessChain);
4808
4809 auto Res = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
4810 .addDef(ResVReg)
4811 .addUse(GR.getSPIRVTypeID(ResType))
4812 // Object to get a pointer to.
4813 .addUse(I.getOperand(3).getReg());
4814 assert(
4815 (Opcode == SPIRV::OpPtrAccessChain ||
4816 Opcode == SPIRV::OpInBoundsPtrAccessChain ||
4817 (getImm(I.getOperand(4), MRI) && foldImm(I.getOperand(4), MRI) == 0)) &&
4818 "Cannot translate GEP to OpAccessChain. First index must be 0.");
4819
4820 // Adding indices.
4821 const unsigned StartingIndex =
4822 (Opcode == SPIRV::OpAccessChain || Opcode == SPIRV::OpInBoundsAccessChain)
4823 ? 5
4824 : 4;
4825 for (unsigned i = StartingIndex; i < I.getNumExplicitOperands(); ++i)
4826 Res.addUse(I.getOperand(i).getReg());
4827 Res.constrainAllUses(TII, TRI, RBI);
4828 return true;
4829}
4830
4831// Maybe wrap a value into OpSpecConstantOp
4832bool SPIRVInstructionSelector::wrapIntoSpecConstantOp(
4833 MachineInstr &I, SmallVector<Register> &CompositeArgs) const {
4834 unsigned Lim = I.getNumExplicitOperands();
4835 for (unsigned i = I.getNumExplicitDefs() + 1; i < Lim; ++i) {
4836 Register OpReg = I.getOperand(i).getReg();
4837 MachineInstr *OpDefine = MRI->getVRegDef(OpReg);
4838 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
4839 if (!OpDefine || !OpType || isConstReg(MRI, OpDefine) ||
4840 OpDefine->getOpcode() == TargetOpcode::G_ADDRSPACE_CAST ||
4841 OpDefine->getOpcode() == TargetOpcode::G_INTTOPTR ||
4842 GR.isAggregateType(OpType)) {
4843 // The case of G_ADDRSPACE_CAST inside spv_const_composite() is processed
4844 // by selectAddrSpaceCast(), and G_INTTOPTR is processed by selectUnOp()
4845 CompositeArgs.push_back(OpReg);
4846 continue;
4847 }
4848 MachineFunction *MF = I.getMF();
4849 Register WrapReg = GR.find(OpDefine, MF);
4850 if (WrapReg.isValid()) {
4851 CompositeArgs.push_back(WrapReg);
4852 continue;
4853 }
4854 // Create a new register for the wrapper
4855 WrapReg = MRI->createVirtualRegister(GR.getRegClass(OpType));
4856 CompositeArgs.push_back(WrapReg);
4857 // Decorate the wrapper register and generate a new instruction
4858 MRI->setType(WrapReg, LLT::pointer(0, 64));
4859 GR.assignSPIRVTypeToVReg(OpType, WrapReg, *MF);
4860 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
4861 TII.get(SPIRV::OpSpecConstantOp))
4862 .addDef(WrapReg)
4863 .addUse(GR.getSPIRVTypeID(OpType))
4864 .addImm(static_cast<uint32_t>(SPIRV::Opcode::Bitcast))
4865 .addUse(OpReg);
4866 GR.add(OpDefine, MIB);
4867 MIB.constrainAllUses(TII, TRI, RBI);
4868 }
4869 return true;
4870}
4871
4872bool SPIRVInstructionSelector::selectDerivativeInst(
4873 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
4874 const unsigned DPdOpCode) const {
4875 // TODO: This should check specifically for Fragment Execution Model, but STI
4876 // doesn't provide that information yet. See #167562
4877 if (!errorIfInstrOutsideShader(I))
4878 return false;
4879
4880 // If the arg/result types are half then we need to wrap the instr in
4881 // conversions to float
4882 // This case occurs because a half arg/result is legal in HLSL but not spirv.
4883 Register SrcReg = I.getOperand(2).getReg();
4884 SPIRVTypeInst SrcType = GR.getSPIRVTypeForVReg(SrcReg);
4885 unsigned BitWidth = std::min(GR.getScalarOrVectorBitWidth(SrcType),
4886 GR.getScalarOrVectorBitWidth(ResType));
4887 if (BitWidth == 32)
4888 return BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(DPdOpCode))
4889 .addDef(ResVReg)
4890 .addUse(GR.getSPIRVTypeID(ResType))
4891 .addUse(I.getOperand(2).getReg());
4892
4893 MachineIRBuilder MIRBuilder(I);
4894 unsigned componentCount = GR.getScalarOrVectorComponentCount(SrcType);
4895 SPIRVTypeInst F32ConvertTy = GR.getOrCreateSPIRVFloatType(32, I, TII);
4896 if (componentCount != 1)
4897 F32ConvertTy = GR.getOrCreateSPIRVVectorType(F32ConvertTy, componentCount,
4898 MIRBuilder, false);
4899
4900 const TargetRegisterClass *RegClass = GR.getRegClass(SrcType);
4901 Register ConvertToVReg = MRI->createVirtualRegister(RegClass);
4902 Register DpdOpVReg = MRI->createVirtualRegister(RegClass);
4903
4904 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpFConvert))
4905 .addDef(ConvertToVReg)
4906 .addUse(GR.getSPIRVTypeID(F32ConvertTy))
4907 .addUse(SrcReg)
4908 .constrainAllUses(TII, TRI, RBI);
4909 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(DPdOpCode))
4910 .addDef(DpdOpVReg)
4911 .addUse(GR.getSPIRVTypeID(F32ConvertTy))
4912 .addUse(ConvertToVReg)
4913 .constrainAllUses(TII, TRI, RBI);
4914 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpFConvert))
4915 .addDef(ResVReg)
4916 .addUse(GR.getSPIRVTypeID(ResType))
4917 .addUse(DpdOpVReg)
4918 .constrainAllUses(TII, TRI, RBI);
4919 return true;
4920}
4921
4922bool SPIRVInstructionSelector::selectIntrinsic(Register ResVReg,
4923 SPIRVTypeInst ResType,
4924 MachineInstr &I) const {
4925 MachineBasicBlock &BB = *I.getParent();
4926 Intrinsic::ID IID = cast<GIntrinsic>(I).getIntrinsicID();
4927 switch (IID) {
4928 case Intrinsic::spv_load:
4929 return selectLoad(ResVReg, ResType, I);
4930 case Intrinsic::spv_atomic_load:
4931 return selectAtomicLoad(ResVReg, ResType, I);
4932 case Intrinsic::spv_store:
4933 return selectStore(I);
4934 case Intrinsic::spv_atomic_store:
4935 return selectAtomicStore(I);
4936 case Intrinsic::spv_extractv:
4937 return selectExtractVal(ResVReg, ResType, I);
4938 case Intrinsic::spv_insertv:
4939 return selectInsertVal(ResVReg, ResType, I);
4940 case Intrinsic::spv_extractelt:
4941 return selectExtractElt(ResVReg, ResType, I);
4942 case Intrinsic::spv_insertelt:
4943 return selectInsertElt(ResVReg, ResType, I);
4944 case Intrinsic::spv_gep:
4945 return selectGEP(ResVReg, ResType, I);
4946 case Intrinsic::spv_bitcast: {
4947 Register OpReg = I.getOperand(2).getReg();
4948 SPIRVTypeInst OpType =
4949 OpReg.isValid() ? GR.getSPIRVTypeForVReg(OpReg) : nullptr;
4950 if (!GR.isBitcastCompatible(ResType, OpType))
4951 report_fatal_error("incompatible result and operand types in a bitcast");
4952 return selectOpWithSrcs(ResVReg, ResType, I, {OpReg}, SPIRV::OpBitcast);
4953 }
4954 case Intrinsic::spv_unref_global:
4955 case Intrinsic::spv_init_global: {
4956 MachineInstr *MI = MRI->getVRegDef(I.getOperand(1).getReg());
4957 MachineInstr *Init = I.getNumExplicitOperands() > 2
4958 ? MRI->getVRegDef(I.getOperand(2).getReg())
4959 : nullptr;
4960 assert(MI);
4961 Register GVarVReg = MI->getOperand(0).getReg();
4962 if (!selectGlobalValue(GVarVReg, *MI, Init))
4963 return false;
4964 // We violate SSA form by inserting OpVariable and still having a gMIR
4965 // instruction %vreg = G_GLOBAL_VALUE @gvar. We need to fix this by erasing
4966 // the duplicated definition.
4967 if (MI->getOpcode() == TargetOpcode::G_GLOBAL_VALUE) {
4968 GR.invalidateMachineInstr(MI);
4969 MI->eraseFromParent();
4970 }
4971 return true;
4972 }
4973 case Intrinsic::spv_undef: {
4974 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
4975 .addDef(ResVReg)
4976 .addUse(GR.getSPIRVTypeID(ResType));
4977 MIB.constrainAllUses(TII, TRI, RBI);
4978 return true;
4979 }
4980 case Intrinsic::spv_poison:
4981 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpPoisonKHR))
4982 .addDef(ResVReg)
4983 .addUse(GR.getSPIRVTypeID(ResType))
4984 .constrainAllUses(TII, TRI, RBI);
4985 return true;
4986 case Intrinsic::spv_freeze:
4987 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpFreezeKHR))
4988 .addDef(ResVReg)
4989 .addUse(GR.getSPIRVTypeID(ResType))
4990 .addUse(I.getOperand(2).getReg())
4991 .constrainAllUses(TII, TRI, RBI);
4992 return true;
4993 case Intrinsic::spv_named_boolean_spec_constant: {
4994 auto Opcode = I.getOperand(3).getImm() ? SPIRV::OpSpecConstantTrue
4995 : SPIRV::OpSpecConstantFalse;
4996
4997 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
4998 .addDef(I.getOperand(0).getReg())
4999 .addUse(GR.getSPIRVTypeID(ResType));
5000 MIB.constrainAllUses(TII, TRI, RBI);
5001 unsigned SpecId = I.getOperand(2).getImm();
5002 buildOpDecorate(I.getOperand(0).getReg(), *++MIB->getIterator(), TII,
5003 SPIRV::Decoration::SpecId, {SpecId});
5004
5005 return true;
5006 }
5007 case Intrinsic::spv_const_composite: {
5008 // If no values are attached, the composite is null constant.
5009 bool IsNull = I.getNumExplicitDefs() + 1 == I.getNumExplicitOperands();
5010 SmallVector<Register> CompositeArgs;
5011 MRI->setRegClass(ResVReg, GR.getRegClass(ResType));
5012
5013 // skip type MD node we already used when generated assign.type for this
5014 if (!IsNull) {
5015 if (!wrapIntoSpecConstantOp(I, CompositeArgs))
5016 return false;
5017 std::function<bool(Register)> HasSpecConstOperand =
5018 [&](Register Reg) -> bool {
5019 MachineInstr *Def = MRI->getVRegDef(Reg);
5020 if (!Def)
5021 return false;
5022 if (!isConstReg(MRI, Def))
5023 return true;
5024 // Recurse into not-yet-selected spv_const_composite intrinsics
5025 // to detect transitive spec constant operands.
5026 if (isSpvIntrinsic(*Def, Intrinsic::spv_const_composite)) {
5027 for (unsigned J = Def->getNumExplicitDefs() + 1;
5028 J < Def->getNumExplicitOperands(); ++J) {
5029 if (Def->getOperand(J).isReg() &&
5030 HasSpecConstOperand(Def->getOperand(J).getReg()))
5031 return true;
5032 }
5033 }
5034 return false;
5035 };
5036 bool HasSpecConst = llvm::any_of(CompositeArgs, HasSpecConstOperand);
5037 unsigned CompositeOpc = HasSpecConst ? SPIRV::OpSpecConstantComposite
5038 : SPIRV::OpConstantComposite;
5039 unsigned ContinuedOpc = HasSpecConst
5040 ? SPIRV::OpSpecConstantCompositeContinuedINTEL
5041 : SPIRV::OpConstantCompositeContinuedINTEL;
5042 MachineIRBuilder MIR(I);
5043 SmallVector<MachineInstr *, 4> Instructions = createContinuedInstructions(
5044 MIR, CompositeOpc, 3, ContinuedOpc, CompositeArgs, ResVReg,
5045 GR.getSPIRVTypeID(ResType));
5046 for (auto *Instr : Instructions) {
5047 Instr->setDebugLoc(I.getDebugLoc());
5048 constrainSelectedInstRegOperands(*Instr, TII, TRI, RBI);
5049 }
5050 return true;
5051 } else {
5052 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
5053 .addDef(ResVReg)
5054 .addUse(GR.getSPIRVTypeID(ResType));
5055 MIB.constrainAllUses(TII, TRI, RBI);
5056 return true;
5057 }
5058 }
5059 case Intrinsic::spv_assign_name: {
5060 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpName));
5061 MIB.addUse(I.getOperand(I.getNumExplicitDefs() + 1).getReg());
5062 for (unsigned i = I.getNumExplicitDefs() + 2;
5063 i < I.getNumExplicitOperands(); ++i) {
5064 MIB.addImm(I.getOperand(i).getImm());
5065 }
5066 MIB.constrainAllUses(TII, TRI, RBI);
5067 return true;
5068 }
5069 case Intrinsic::spv_switch: {
5070 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSwitch));
5071 for (unsigned i = 1; i < I.getNumExplicitOperands(); ++i) {
5072 if (I.getOperand(i).isReg())
5073 MIB.addReg(I.getOperand(i).getReg());
5074 else if (I.getOperand(i).isCImm())
5075 addNumImm(I.getOperand(i).getCImm()->getValue(), MIB);
5076 else if (I.getOperand(i).isMBB())
5077 MIB.addMBB(I.getOperand(i).getMBB());
5078 else
5079 llvm_unreachable("Unexpected OpSwitch operand");
5080 }
5081 MIB.constrainAllUses(TII, TRI, RBI);
5082 return true;
5083 }
5084 case Intrinsic::spv_loop_merge: {
5085 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpLoopMerge));
5086 for (unsigned i = 1; i < I.getNumExplicitOperands(); ++i) {
5087 if (I.getOperand(i).isMBB())
5088 MIB.addMBB(I.getOperand(i).getMBB());
5089 else
5090 MIB.addImm(foldImm(I.getOperand(i), MRI));
5091 }
5092 MIB.constrainAllUses(TII, TRI, RBI);
5093 return true;
5094 }
5095 case Intrinsic::spv_loop_control_intel: {
5096 auto MIB =
5097 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpLoopControlINTEL));
5098 for (unsigned J = 1; J < I.getNumExplicitOperands(); ++J)
5099 MIB.addImm(foldImm(I.getOperand(J), MRI));
5100 MIB.constrainAllUses(TII, TRI, RBI);
5101 return true;
5102 }
5103 case Intrinsic::spv_selection_merge: {
5104 auto MIB =
5105 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpSelectionMerge));
5106 assert(I.getOperand(1).isMBB() &&
5107 "operand 1 to spv_selection_merge must be a basic block");
5108 MIB.addMBB(I.getOperand(1).getMBB());
5109 MIB.addImm(getSelectionOperandForImm(I.getOperand(2).getImm()));
5110 MIB.constrainAllUses(TII, TRI, RBI);
5111 return true;
5112 }
5113 case Intrinsic::spv_cmpxchg:
5114 return selectAtomicCmpXchg(ResVReg, ResType, I);
5115 case Intrinsic::spv_unreachable:
5116 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUnreachable))
5117 .constrainAllUses(TII, TRI, RBI);
5118 return true;
5119 case Intrinsic::spv_abort:
5120 return selectAbort(I);
5121 case Intrinsic::spv_alloca:
5122 return selectFrameIndex(ResVReg, ResType, I);
5123 case Intrinsic::spv_alloca_array:
5124 return selectAllocaArray(ResVReg, ResType, I);
5125 case Intrinsic::spv_assume:
5126 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_expect_assume)) {
5127 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpAssumeTrueKHR))
5128 .addUse(I.getOperand(1).getReg())
5129 .constrainAllUses(TII, TRI, RBI);
5130 return true;
5131 }
5132 break;
5133 case Intrinsic::spv_expect:
5134 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_expect_assume)) {
5135 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExpectKHR))
5136 .addDef(ResVReg)
5137 .addUse(GR.getSPIRVTypeID(ResType))
5138 .addUse(I.getOperand(2).getReg())
5139 .addUse(I.getOperand(3).getReg())
5140 .constrainAllUses(TII, TRI, RBI);
5141 return true;
5142 }
5143 break;
5144 case Intrinsic::arithmetic_fence:
5145 if (STI.canUseExtension(SPIRV::Extension::SPV_EXT_arithmetic_fence)) {
5146 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpArithmeticFenceEXT))
5147 .addDef(ResVReg)
5148 .addUse(GR.getSPIRVTypeID(ResType))
5149 .addUse(I.getOperand(2).getReg())
5150 .constrainAllUses(TII, TRI, RBI);
5151 return true;
5152 } else
5153 return BuildCOPY(ResVReg, I.getOperand(2).getReg(), I);
5154 break;
5155 case Intrinsic::spv_thread_id:
5156 // The HLSL SV_DispatchThreadID semantic is lowered to llvm.spv.thread.id
5157 // intrinsic in LLVM IR for SPIR-V backend.
5158 //
5159 // In SPIR-V backend, llvm.spv.thread.id is now correctly translated to a
5160 // `GlobalInvocationId` builtin variable
5161 return loadVec3BuiltinInputID(SPIRV::BuiltIn::GlobalInvocationId, ResVReg,
5162 ResType, I);
5163 case Intrinsic::spv_thread_id_in_group:
5164 // The HLSL SV_GroupThreadId semantic is lowered to
5165 // llvm.spv.thread.id.in.group intrinsic in LLVM IR for SPIR-V backend.
5166 //
5167 // In SPIR-V backend, llvm.spv.thread.id.in.group is now correctly
5168 // translated to a `LocalInvocationId` builtin variable
5169 return loadVec3BuiltinInputID(SPIRV::BuiltIn::LocalInvocationId, ResVReg,
5170 ResType, I);
5171 case Intrinsic::spv_group_id:
5172 // The HLSL SV_GroupId semantic is lowered to
5173 // llvm.spv.group.id intrinsic in LLVM IR for SPIR-V backend.
5174 //
5175 // In SPIR-V backend, llvm.spv.group.id is now translated to a `WorkgroupId`
5176 // builtin variable
5177 return loadVec3BuiltinInputID(SPIRV::BuiltIn::WorkgroupId, ResVReg, ResType,
5178 I);
5179 case Intrinsic::spv_flattened_thread_id_in_group:
5180 // The HLSL SV_GroupIndex semantic is lowered to
5181 // llvm.spv.flattened.thread.id.in.group() intrinsic in LLVM IR for SPIR-V
5182 // backend.
5183 //
5184 // In SPIR-V backend, llvm.spv.flattened.thread.id.in.group is translated to
5185 // a `LocalInvocationIndex` builtin variable
5186 return loadBuiltinInputID(SPIRV::BuiltIn::LocalInvocationIndex, ResVReg,
5187 ResType, I);
5188 case Intrinsic::spv_workgroup_size:
5189 return loadVec3BuiltinInputID(SPIRV::BuiltIn::WorkgroupSize, ResVReg,
5190 ResType, I);
5191 case Intrinsic::spv_global_size:
5192 return loadVec3BuiltinInputID(SPIRV::BuiltIn::GlobalSize, ResVReg, ResType,
5193 I);
5194 case Intrinsic::spv_global_offset:
5195 return loadVec3BuiltinInputID(SPIRV::BuiltIn::GlobalOffset, ResVReg,
5196 ResType, I);
5197 case Intrinsic::spv_num_workgroups:
5198 return loadVec3BuiltinInputID(SPIRV::BuiltIn::NumWorkgroups, ResVReg,
5199 ResType, I);
5200 case Intrinsic::spv_subgroup_size:
5201 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupSize, ResVReg, ResType,
5202 I);
5203 case Intrinsic::spv_num_subgroups:
5204 return loadBuiltinInputID(SPIRV::BuiltIn::NumSubgroups, ResVReg, ResType,
5205 I);
5206 case Intrinsic::spv_subgroup_id:
5207 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupId, ResVReg, ResType, I);
5208 case Intrinsic::spv_subgroup_local_invocation_id:
5209 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupLocalInvocationId,
5210 ResVReg, ResType, I);
5211 case Intrinsic::spv_subgroup_max_size:
5212 return loadBuiltinInputID(SPIRV::BuiltIn::SubgroupMaxSize, ResVReg, ResType,
5213 I);
5214 case Intrinsic::spv_fdot:
5215 return selectFloatDot(ResVReg, ResType, I);
5216 case Intrinsic::spv_udot:
5217 case Intrinsic::spv_sdot:
5218 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_integer_dot_product) ||
5219 STI.isAtLeastSPIRVVer(VersionTuple(1, 6)))
5220 return selectIntegerDot(ResVReg, ResType, I,
5221 /*Signed=*/IID == Intrinsic::spv_sdot);
5222 return selectIntegerDotExpansion(ResVReg, ResType, I);
5223 case Intrinsic::spv_dot4add_i8packed:
5224 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_integer_dot_product) ||
5225 STI.isAtLeastSPIRVVer(VersionTuple(1, 6)))
5226 return selectDot4AddPacked<true>(ResVReg, ResType, I);
5227 return selectDot4AddPackedExpansion<true>(ResVReg, ResType, I);
5228 case Intrinsic::spv_dot4add_u8packed:
5229 if (STI.canUseExtension(SPIRV::Extension::SPV_KHR_integer_dot_product) ||
5230 STI.isAtLeastSPIRVVer(VersionTuple(1, 6)))
5231 return selectDot4AddPacked<false>(ResVReg, ResType, I);
5232 return selectDot4AddPackedExpansion<false>(ResVReg, ResType, I);
5233 case Intrinsic::spv_all:
5234 return selectAll(ResVReg, ResType, I);
5235 case Intrinsic::spv_any:
5236 return selectAny(ResVReg, ResType, I);
5237 case Intrinsic::spv_cross:
5238 return selectExtInst(ResVReg, ResType, I, CL::cross, GL::Cross);
5239 case Intrinsic::spv_distance:
5240 return selectExtInst(ResVReg, ResType, I, CL::distance, GL::Distance);
5241 case Intrinsic::spv_lerp:
5242 return selectExtInst(ResVReg, ResType, I, CL::mix, GL::FMix);
5243 case Intrinsic::spv_length:
5244 return selectExtInst(ResVReg, ResType, I, CL::length, GL::Length);
5245 case Intrinsic::spv_degrees:
5246 return selectExtInst(ResVReg, ResType, I, CL::degrees, GL::Degrees);
5247 case Intrinsic::spv_faceforward:
5248 return selectExtInst(ResVReg, ResType, I, GL::FaceForward);
5249 case Intrinsic::spv_frac:
5250 return selectExtInst(ResVReg, ResType, I, CL::fract, GL::Fract);
5251 case Intrinsic::spv_isinf:
5252 return selectOpIsInf(ResVReg, ResType, I);
5253 case Intrinsic::spv_isnan:
5254 return selectOpIsNan(ResVReg, ResType, I);
5255 case Intrinsic::spv_isfinite:
5256 return selectOpIsFinite(ResVReg, ResType, I);
5257 case Intrinsic::spv_isnormal:
5258 return selectOpIsNormal(ResVReg, ResType, I);
5259 case Intrinsic::spv_normalize:
5260 return selectExtInst(ResVReg, ResType, I, CL::normalize, GL::Normalize);
5261 case Intrinsic::spv_refract:
5262 return selectExtInst(ResVReg, ResType, I, GL::Refract);
5263 case Intrinsic::spv_reflect:
5264 return selectExtInst(ResVReg, ResType, I, GL::Reflect);
5265 case Intrinsic::spv_rsqrt:
5266 return selectExtInst(ResVReg, ResType, I, CL::rsqrt, GL::InverseSqrt);
5267 case Intrinsic::spv_sign:
5268 return selectSign(ResVReg, ResType, I);
5269 case Intrinsic::spv_smoothstep:
5270 return selectExtInst(ResVReg, ResType, I, CL::smoothstep, GL::SmoothStep);
5271 case Intrinsic::spv_firstbituhigh: // There is no CL equivalent of FindUMsb
5272 return selectFirstBitHigh(ResVReg, ResType, I, /*IsSigned=*/false);
5273 case Intrinsic::spv_firstbitshigh: // There is no CL equivalent of FindSMsb
5274 return selectFirstBitHigh(ResVReg, ResType, I, /*IsSigned=*/true);
5275 case Intrinsic::spv_firstbitlow: // There is no CL equivlent of FindILsb
5276 return selectFirstBitLow(ResVReg, ResType, I);
5277 case Intrinsic::spv_all_memory_barrier:
5278 return selectBarrierInst(I, SPIRV::Scope::Device,
5279 SPIRV::MemorySemantics::UniformMemory |
5280 SPIRV::MemorySemantics::ImageMemory |
5281 SPIRV::MemorySemantics::WorkgroupMemory,
5282 /*WithGroupSync*/ false);
5283 case Intrinsic::spv_all_memory_barrier_with_group_sync:
5284 return selectBarrierInst(I, SPIRV::Scope::Device,
5285 SPIRV::MemorySemantics::UniformMemory |
5286 SPIRV::MemorySemantics::ImageMemory |
5287 SPIRV::MemorySemantics::WorkgroupMemory,
5288 /*WithGroupSync*/ true);
5289 case Intrinsic::spv_device_memory_barrier:
5290 return selectBarrierInst(I, SPIRV::Scope::Device,
5291 SPIRV::MemorySemantics::UniformMemory |
5292 SPIRV::MemorySemantics::ImageMemory,
5293 /*WithGroupSync*/ false);
5294 case Intrinsic::spv_device_memory_barrier_with_group_sync:
5295 return selectBarrierInst(I, SPIRV::Scope::Device,
5296 SPIRV::MemorySemantics::UniformMemory |
5297 SPIRV::MemorySemantics::ImageMemory,
5298 /*WithGroupSync*/ true);
5299 case Intrinsic::spv_group_memory_barrier:
5300 return selectBarrierInst(I, SPIRV::Scope::Workgroup,
5301 SPIRV::MemorySemantics::WorkgroupMemory,
5302 /*WithGroupSync*/ false);
5303 case Intrinsic::spv_group_memory_barrier_with_group_sync:
5304 return selectBarrierInst(I, SPIRV::Scope::Workgroup,
5305 SPIRV::MemorySemantics::WorkgroupMemory,
5306 /*WithGroupSync*/ true);
5307 case Intrinsic::spv_generic_cast_to_ptr_explicit: {
5308 Register PtrReg = I.getOperand(I.getNumExplicitDefs() + 1).getReg();
5309 SPIRV::StorageClass::StorageClass ResSC =
5310 GR.getPointerStorageClass(ResType);
5311 if (!isGenericCastablePtr(ResSC))
5312 return diagnoseUnsupported(I, "The target storage class is not castable "
5313 "from the Generic storage class");
5314 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpGenericCastToPtrExplicit))
5315 .addDef(ResVReg)
5316 .addUse(GR.getSPIRVTypeID(ResType))
5317 .addUse(PtrReg)
5318 .addImm(ResSC)
5319 .constrainAllUses(TII, TRI, RBI);
5320 return true;
5321 }
5322 case Intrinsic::spv_lifetime_start:
5323 case Intrinsic::spv_lifetime_end: {
5324 unsigned Op = IID == Intrinsic::spv_lifetime_start ? SPIRV::OpLifetimeStart
5325 : SPIRV::OpLifetimeStop;
5326 int64_t Size = I.getOperand(I.getNumExplicitDefs() + 1).getImm();
5327 Register PtrReg = I.getOperand(I.getNumExplicitDefs() + 2).getReg();
5328 if (Size == -1)
5329 Size = 0;
5330 BuildMI(BB, I, I.getDebugLoc(), TII.get(Op))
5331 .addUse(PtrReg)
5332 .addImm(Size)
5333 .constrainAllUses(TII, TRI, RBI);
5334 return true;
5335 }
5336 case Intrinsic::spv_saturate:
5337 return selectSaturate(ResVReg, ResType, I);
5338 case Intrinsic::spv_nclamp:
5339 return selectExtInst(ResVReg, ResType, I, CL::fclamp, GL::NClamp);
5340 case Intrinsic::spv_uclamp:
5341 return selectExtInst(ResVReg, ResType, I, CL::u_clamp, GL::UClamp);
5342 case Intrinsic::spv_sclamp:
5343 return selectExtInst(ResVReg, ResType, I, CL::s_clamp, GL::SClamp);
5344 case Intrinsic::spv_subgroup_prefix_bit_count:
5345 return selectWavePrefixBitCount(ResVReg, ResType, I);
5346 case Intrinsic::spv_wave_active_countbits:
5347 return selectWaveActiveCountBits(ResVReg, ResType, I);
5348 case Intrinsic::spv_wave_all_equal:
5349 return selectWaveActiveAllEqual(ResVReg, ResType, I);
5350 case Intrinsic::spv_wave_all:
5351 return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformAll);
5352 case Intrinsic::spv_wave_any:
5353 return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformAny);
5354 case Intrinsic::spv_subgroup_ballot:
5355 return selectWaveOpInst(ResVReg, ResType, I,
5356 SPIRV::OpGroupNonUniformBallot);
5357 case Intrinsic::spv_wave_is_first_lane:
5358 return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformElect);
5359 case Intrinsic::spv_wave_reduce_or:
5360 return selectWaveReduceOp(ResVReg, ResType, I,
5361 SPIRV::OpGroupNonUniformBitwiseOr);
5362 case Intrinsic::spv_wave_reduce_xor:
5363 return selectWaveReduceOp(ResVReg, ResType, I,
5364 SPIRV::OpGroupNonUniformBitwiseXor);
5365 case Intrinsic::spv_wave_reduce_and:
5366 return selectWaveReduceOp(ResVReg, ResType, I,
5367 SPIRV::OpGroupNonUniformBitwiseAnd);
5368 case Intrinsic::spv_interlocked_add:
5369 return selectInterlockedOp(ResVReg, ResType, I, SPIRV::OpAtomicIAdd);
5370 case Intrinsic::spv_interlocked_or:
5371 return selectInterlockedOp(ResVReg, ResType, I, SPIRV::OpAtomicOr);
5372 case Intrinsic::spv_wave_reduce_umax:
5373 return selectWaveReduceMax(ResVReg, ResType, I, /*IsUnsigned*/ true);
5374 case Intrinsic::spv_wave_reduce_max:
5375 return selectWaveReduceMax(ResVReg, ResType, I, /*IsUnsigned*/ false);
5376 case Intrinsic::spv_wave_reduce_umin:
5377 return selectWaveReduceMin(ResVReg, ResType, I, /*IsUnsigned*/ true);
5378 case Intrinsic::spv_wave_reduce_min:
5379 return selectWaveReduceMin(ResVReg, ResType, I, /*IsUnsigned*/ false);
5380 case Intrinsic::spv_wave_reduce_sum:
5381 return selectWaveReduceSum(ResVReg, ResType, I);
5382 case Intrinsic::spv_wave_product:
5383 return selectWaveReduceProduct(ResVReg, ResType, I);
5384 case Intrinsic::spv_wave_readlane:
5385 return selectWaveOpInst(ResVReg, ResType, I,
5386 SPIRV::OpGroupNonUniformShuffle);
5387 case Intrinsic::spv_wave_prefix_sum:
5388 return selectWaveExclusiveScanSum(ResVReg, ResType, I);
5389 case Intrinsic::spv_wave_prefix_product:
5390 return selectWaveExclusiveScanProduct(ResVReg, ResType, I);
5391 case Intrinsic::spv_quad_read_across_x: {
5392 return selectQuadSwap(ResVReg, ResType, I, /*Direction*/ 0);
5393 }
5394 case Intrinsic::spv_quad_read_across_y: {
5395 return selectQuadSwap(ResVReg, ResType, I, /*Direction*/ 1);
5396 }
5397 case Intrinsic::spv_quad_read_across_diagonal: {
5398 return selectQuadSwap(ResVReg, ResType, I, /*Direction*/ 2);
5399 }
5400 case Intrinsic::spv_step:
5401 return selectExtInst(ResVReg, ResType, I, CL::step, GL::Step);
5402 case Intrinsic::spv_radians:
5403 return selectExtInst(ResVReg, ResType, I, CL::radians, GL::Radians);
5404 // Discard intrinsics which we do not expect to actually represent code after
5405 // lowering or intrinsics which are not implemented but should not crash when
5406 // found in a customer's LLVM IR input.
5407 case Intrinsic::instrprof_increment:
5408 case Intrinsic::instrprof_increment_step:
5409 case Intrinsic::instrprof_value_profile:
5410 break;
5411 // Discard internal intrinsics.
5412 case Intrinsic::spv_value_md:
5413 break;
5414 case Intrinsic::spv_resource_handlefrombinding: {
5415 return selectHandleFromBinding(ResVReg, ResType, I);
5416 }
5417 case Intrinsic::spv_resource_counterhandlefrombinding:
5418 return selectCounterHandleFromBinding(ResVReg, ResType, I);
5419 case Intrinsic::spv_resource_updatecounter:
5420 return selectUpdateCounter(ResVReg, ResType, I);
5421 case Intrinsic::spv_resource_store_typedbuffer: {
5422 return selectImageWriteIntrinsic(I);
5423 }
5424 case Intrinsic::spv_resource_load_typedbuffer: {
5425 return selectReadImageIntrinsic(ResVReg, ResType, I);
5426 }
5427 case Intrinsic::spv_resource_load_level: {
5428 return selectLoadLevelIntrinsic(ResVReg, ResType, I);
5429 }
5430 case Intrinsic::spv_resource_getdimensions_x:
5431 case Intrinsic::spv_resource_getdimensions_xy:
5432 case Intrinsic::spv_resource_getdimensions_xyz: {
5433 return selectGetDimensionsIntrinsic(ResVReg, ResType, I);
5434 }
5435 case Intrinsic::spv_resource_getdimensions_levels_x:
5436 case Intrinsic::spv_resource_getdimensions_levels_xy:
5437 case Intrinsic::spv_resource_getdimensions_levels_xyz: {
5438 return selectGetDimensionsLevelsIntrinsic(ResVReg, ResType, I);
5439 }
5440 case Intrinsic::spv_resource_getdimensions_ms_xy:
5441 case Intrinsic::spv_resource_getdimensions_ms_xyz: {
5442 return selectGetDimensionsMSIntrinsic(ResVReg, ResType, I);
5443 }
5444 case Intrinsic::spv_resource_calculate_lod:
5445 case Intrinsic::spv_resource_calculate_lod_unclamped:
5446 return selectCalculateLodIntrinsic(ResVReg, ResType, I);
5447 case Intrinsic::spv_resource_sample:
5448 case Intrinsic::spv_resource_sample_clamp:
5449 return selectSampleBasicIntrinsic(ResVReg, ResType, I);
5450 case Intrinsic::spv_resource_samplebias:
5451 case Intrinsic::spv_resource_samplebias_clamp:
5452 return selectSampleBiasIntrinsic(ResVReg, ResType, I);
5453 case Intrinsic::spv_resource_samplegrad:
5454 case Intrinsic::spv_resource_samplegrad_clamp:
5455 return selectSampleGradIntrinsic(ResVReg, ResType, I);
5456 case Intrinsic::spv_resource_samplelevel:
5457 return selectSampleLevelIntrinsic(ResVReg, ResType, I);
5458 case Intrinsic::spv_resource_samplecmp:
5459 case Intrinsic::spv_resource_samplecmp_clamp:
5460 return selectSampleCmpIntrinsic(ResVReg, ResType, I);
5461 case Intrinsic::spv_resource_samplecmplevelzero:
5462 return selectSampleCmpLevelZeroIntrinsic(ResVReg, ResType, I);
5463 case Intrinsic::spv_resource_gather:
5464 case Intrinsic::spv_resource_gather_cmp:
5465 return selectGatherIntrinsic(ResVReg, ResType, I);
5466 case Intrinsic::spv_resource_getbasepointer:
5467 case Intrinsic::spv_resource_getpointer: {
5468 return selectResourceGetPointer(ResVReg, ResType, I);
5469 }
5470 case Intrinsic::spv_pushconstant_getpointer: {
5471 return selectPushConstantGetPointer(ResVReg, ResType, I);
5472 }
5473 case Intrinsic::spv_discard: {
5474 return selectDiscard(ResVReg, ResType, I);
5475 }
5476 case Intrinsic::spv_resource_nonuniformindex: {
5477 return selectResourceNonUniformIndex(ResVReg, ResType, I);
5478 }
5479 case Intrinsic::spv_unpackhalf2x16: {
5480 return selectExtInst(ResVReg, ResType, I, GL::UnpackHalf2x16);
5481 }
5482 case Intrinsic::spv_packhalf2x16: {
5483 return selectExtInst(ResVReg, ResType, I, GL::PackHalf2x16);
5484 }
5485 case Intrinsic::spv_ddx:
5486 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdx);
5487 case Intrinsic::spv_ddy:
5488 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdy);
5489 case Intrinsic::spv_ddx_coarse:
5490 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdxCoarse);
5491 case Intrinsic::spv_ddy_coarse:
5492 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdyCoarse);
5493 case Intrinsic::spv_ddx_fine:
5494 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdxFine);
5495 case Intrinsic::spv_ddy_fine:
5496 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdyFine);
5497 case Intrinsic::spv_fwidth:
5498 return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpFwidth);
5499 case Intrinsic::spv_masked_gather:
5500 if (STI.canUseExtension(SPIRV::Extension::SPV_INTEL_masked_gather_scatter))
5501 return selectMaskedGather(ResVReg, ResType, I);
5502 return diagnoseUnsupported(
5503 I, "llvm.masked.gather requires SPV_INTEL_masked_gather_scatter");
5504 case Intrinsic::spv_masked_scatter:
5505 if (STI.canUseExtension(SPIRV::Extension::SPV_INTEL_masked_gather_scatter))
5506 return selectMaskedScatter(I);
5507 return diagnoseUnsupported(
5508 I, "llvm.masked.scatter requires SPV_INTEL_masked_gather_scatter");
5509 case Intrinsic::returnaddress:
5510 case Intrinsic::frameaddress: {
5511 // SPIR-V does not have a stack or return address. Lower to null.
5512 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
5513 .addDef(ResVReg)
5514 .addUse(GR.getSPIRVTypeID(ResType));
5515 MIB.constrainAllUses(TII, TRI, RBI);
5516 return true;
5517 }
5518 default:
5519 return diagnoseUnsupported(I, "intrinsic selection not implemented.");
5520 }
5521 return true;
5522}
5523
5524bool SPIRVInstructionSelector::selectHandleFromBinding(Register &ResVReg,
5525 SPIRVTypeInst ResType,
5526 MachineInstr &I) const {
5527 // The images need to be loaded in the same basic block as their use. We defer
5528 // loading the image to the intrinsic that uses it.
5529 if (ResType->getOpcode() == SPIRV::OpTypeImage)
5530 return true;
5531
5532 return loadHandleBeforePosition(ResVReg, GR.getSPIRVTypeForVReg(ResVReg),
5533 *cast<GIntrinsic>(&I), I);
5534}
5535
5536bool SPIRVInstructionSelector::selectCounterHandleFromBinding(
5537 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5538 auto &Intr = cast<GIntrinsic>(I);
5539 assert(Intr.getIntrinsicID() ==
5540 Intrinsic::spv_resource_counterhandlefrombinding);
5541
5542 // Extract information from the intrinsic call.
5543 Register MainHandleReg = Intr.getOperand(2).getReg();
5544 auto *MainHandleDef = cast<GIntrinsic>(getVRegDef(*MRI, MainHandleReg));
5545 assert(MainHandleDef->getIntrinsicID() ==
5546 Intrinsic::spv_resource_handlefrombinding);
5547
5548 uint32_t Set = getIConstVal(Intr.getOperand(4).getReg(), MRI);
5549 uint32_t Binding = getIConstVal(Intr.getOperand(3).getReg(), MRI);
5550 uint32_t ArraySize = getIConstVal(MainHandleDef->getOperand(4).getReg(), MRI);
5551 Register IndexReg = MainHandleDef->getOperand(5).getReg();
5552 std::string CounterName =
5553 getStringValueFromReg(MainHandleDef->getOperand(6).getReg(), *MRI) +
5554 ".counter";
5555
5556 // Create the counter variable.
5557 MachineIRBuilder MIRBuilder(I);
5558 Register CounterVarReg =
5559 buildPointerToResource(SPIRVTypeInst(GR.getPointeeType(ResType)),
5560 GR.getPointerStorageClass(ResType), Set, Binding,
5561 ArraySize, IndexReg, CounterName, MIRBuilder);
5562
5563 return BuildCOPY(ResVReg, CounterVarReg, I);
5564}
5565
5566bool SPIRVInstructionSelector::selectUpdateCounter(Register &ResVReg,
5567 SPIRVTypeInst ResType,
5568 MachineInstr &I) const {
5569 auto &Intr = cast<GIntrinsic>(I);
5570 assert(Intr.getIntrinsicID() == Intrinsic::spv_resource_updatecounter);
5571
5572 Register CounterHandleReg = Intr.getOperand(2).getReg();
5573 Register IncrReg = Intr.getOperand(3).getReg();
5574
5575 // The counter handle is a pointer to the counter variable (which is a struct
5576 // containing an i32). We need to get a pointer to that i32 member to do the
5577 // atomic operation.
5578#ifndef NDEBUG
5579 SPIRVTypeInst CounterVarType = GR.getSPIRVTypeForVReg(CounterHandleReg);
5580 SPIRVTypeInst CounterVarPointeeType = GR.getPointeeType(CounterVarType);
5581 assert(CounterVarPointeeType &&
5582 CounterVarPointeeType->getOpcode() == SPIRV::OpTypeStruct &&
5583 "Counter variable must be a struct");
5584 assert(GR.getPointerStorageClass(CounterVarType) ==
5585 SPIRV::StorageClass::StorageBuffer &&
5586 "Counter variable must be in the storage buffer storage class");
5587 assert(CounterVarPointeeType->getNumOperands() == 2 &&
5588 "Counter variable must have exactly 1 member in the struct");
5589 const SPIRVTypeInst MemberType =
5590 GR.getSPIRVTypeForVReg(CounterVarPointeeType->getOperand(1).getReg());
5591 assert(MemberType->getOpcode() == SPIRV::OpTypeInt &&
5592 "Counter variable struct must have a single i32 member");
5593#endif
5594
5595 // The struct has a single i32 member.
5596 MachineIRBuilder MIRBuilder(I);
5597 const Type *LLVMIntType =
5598 Type::getInt32Ty(I.getMF()->getFunction().getContext());
5599
5600 SPIRVTypeInst IntPtrType = GR.getOrCreateSPIRVPointerType(
5601 LLVMIntType, MIRBuilder, SPIRV::StorageClass::StorageBuffer);
5602
5603 Register Zero = buildI32Constant(0, I);
5604
5605 Register PtrToCounter =
5606 MRI->createVirtualRegister(GR.getRegClass(IntPtrType));
5607 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAccessChain))
5608 .addDef(PtrToCounter)
5609 .addUse(GR.getSPIRVTypeID(IntPtrType))
5610 .addUse(CounterHandleReg)
5611 .addUse(Zero)
5612 .constrainAllUses(TII, TRI, RBI);
5613
5614 // For UAV/SSBO counters, the scope is Device. The counter variable is not
5615 // used as a flag. So the memory semantics can be None.
5616 Register Scope = buildI32Constant(SPIRV::Scope::Device, I);
5617 Register Semantics = buildI32Constant(SPIRV::MemorySemantics::None, I);
5618
5619 int64_t IncrVal = getIConstValSext(IncrReg, MRI);
5620 Register Incr = buildI32Constant(static_cast<uint32_t>(IncrVal), I);
5621
5622 Register AtomicRes = MRI->createVirtualRegister(GR.getRegClass(ResType));
5623 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAtomicIAdd))
5624 .addDef(AtomicRes)
5625 .addUse(GR.getSPIRVTypeID(ResType))
5626 .addUse(PtrToCounter)
5627 .addUse(Scope)
5628 .addUse(Semantics)
5629 .addUse(Incr)
5630 .constrainAllUses(TII, TRI, RBI);
5631 if (IncrVal >= 0) {
5632 return BuildCOPY(ResVReg, AtomicRes, I);
5633 }
5634
5635 // In HLSL, IncrementCounter returns the value *before* the increment, while
5636 // DecrementCounter returns the value *after* the decrement. Both are lowered
5637 // to the same atomic intrinsic which returns the value *before* the
5638 // operation. So for decrements (negative IncrVal), we must subtract the
5639 // increment value from the result to get the post-decrement value.
5640 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpIAddS))
5641 .addDef(ResVReg)
5642 .addUse(GR.getSPIRVTypeID(ResType))
5643 .addUse(AtomicRes)
5644 .addUse(Incr)
5645 .constrainAllUses(TII, TRI, RBI);
5646 return true;
5647}
5648bool SPIRVInstructionSelector::selectReadImageIntrinsic(Register &ResVReg,
5649 SPIRVTypeInst ResType,
5650 MachineInstr &I) const {
5651
5652 // If the load of the image is in a different basic block, then
5653 // this will generate invalid code. A proper solution is to move
5654 // the OpLoad from selectHandleFromBinding here. However, to do
5655 // that we will need to change the return type of the intrinsic.
5656 // We will do that when we can, but for now trying to move forward with other
5657 // issues.
5658 Register ImageReg = I.getOperand(2).getReg();
5659 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5660 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5661 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5662 *ImageDef, I)) {
5663 return false;
5664 }
5665
5666 Register IdxReg = I.getOperand(3).getReg();
5667 DebugLoc Loc = I.getDebugLoc();
5668 MachineInstr &Pos = I;
5669
5670 return generateImageReadOrFetch(ResVReg, ResType, NewImageReg, IdxReg, Loc,
5671 Pos);
5672}
5673
5674bool SPIRVInstructionSelector::generateSampleImage(
5675 Register ResVReg, SPIRVTypeInst ResType, Register ImageReg,
5676 Register SamplerReg, Register CoordinateReg, const ImageOperands &ImOps,
5677 DebugLoc Loc, MachineInstr &Pos) const {
5678 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5679 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5680 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5681 *ImageDef, Pos)) {
5682 return false;
5683 }
5684
5685 auto *SamplerDef = cast<GIntrinsic>(getVRegDef(*MRI, SamplerReg));
5686 Register NewSamplerReg =
5687 MRI->createVirtualRegister(MRI->getRegClass(SamplerReg));
5688 if (!loadHandleBeforePosition(NewSamplerReg,
5689 GR.getSPIRVTypeForVReg(SamplerReg), *SamplerDef,
5690 Pos)) {
5691 return false;
5692 }
5693
5694 MachineIRBuilder MIRBuilder(Pos);
5695 SPIRVTypeInst SampledImageType = GR.getOrCreateOpTypeSampledImage(
5696 GR.getSPIRVTypeForVReg(ImageReg), MIRBuilder);
5697 Register SampledImageReg =
5698 MRI->createVirtualRegister(GR.getRegClass(SampledImageType));
5699
5700 BuildMI(*Pos.getParent(), Pos, Loc, TII.get(SPIRV::OpSampledImage))
5701 .addDef(SampledImageReg)
5702 .addUse(GR.getSPIRVTypeID(SampledImageType))
5703 .addUse(NewImageReg)
5704 .addUse(NewSamplerReg)
5705 .constrainAllUses(TII, TRI, RBI);
5706
5707 bool IsExplicitLod = ImOps.GradX.has_value() || ImOps.GradY.has_value() ||
5708 ImOps.Lod.has_value();
5709 unsigned Opcode = IsExplicitLod ? SPIRV::OpImageSampleExplicitLod
5710 : SPIRV::OpImageSampleImplicitLod;
5711 if (ImOps.Compare)
5712 Opcode = IsExplicitLod ? SPIRV::OpImageSampleDrefExplicitLod
5713 : SPIRV::OpImageSampleDrefImplicitLod;
5714
5715 auto MIB = BuildMI(*Pos.getParent(), Pos, Loc, TII.get(Opcode))
5716 .addDef(ResVReg)
5717 .addUse(GR.getSPIRVTypeID(ResType))
5718 .addUse(SampledImageReg)
5719 .addUse(CoordinateReg);
5720
5721 if (ImOps.Compare)
5722 MIB.addUse(*ImOps.Compare);
5723
5724 uint32_t ImageOperands = 0;
5725 if (ImOps.Bias)
5726 ImageOperands |= SPIRV::ImageOperand::Bias;
5727 if (ImOps.Lod)
5728 ImageOperands |= SPIRV::ImageOperand::Lod;
5729 if (ImOps.GradX && ImOps.GradY)
5730 ImageOperands |= SPIRV::ImageOperand::Grad;
5731 if (ImOps.Offset && !isScalarOrVectorIntConstantZero(*ImOps.Offset)) {
5732 if (isConstReg(MRI, *ImOps.Offset))
5733 ImageOperands |= SPIRV::ImageOperand::ConstOffset;
5734 else {
5735 Pos.emitGenericError(
5736 "Non-constant offsets are not supported in sample instructions.");
5737 return false;
5738 }
5739 }
5740 if (ImOps.MinLod)
5741 ImageOperands |= SPIRV::ImageOperand::MinLod;
5742
5743 if (ImageOperands != 0) {
5744 MIB.addImm(ImageOperands);
5745 if (ImageOperands & SPIRV::ImageOperand::Bias)
5746 MIB.addUse(*ImOps.Bias);
5747 if (ImageOperands & SPIRV::ImageOperand::Lod)
5748 MIB.addUse(*ImOps.Lod);
5749 if (ImageOperands & SPIRV::ImageOperand::Grad) {
5750 MIB.addUse(*ImOps.GradX);
5751 MIB.addUse(*ImOps.GradY);
5752 }
5753 if (ImageOperands &
5754 (SPIRV::ImageOperand::ConstOffset | SPIRV::ImageOperand::Offset))
5755 MIB.addUse(*ImOps.Offset);
5756 if (ImageOperands & SPIRV::ImageOperand::MinLod)
5757 MIB.addUse(*ImOps.MinLod);
5758 }
5759
5760 MIB.constrainAllUses(TII, TRI, RBI);
5761 return true;
5762}
5763
5764bool SPIRVInstructionSelector::selectImageQuerySize(
5765 Register ImageReg, Register &ResVReg, MachineInstr &I,
5766 std::optional<Register> LodReg) const {
5767 unsigned Opcode =
5768 LodReg ? SPIRV::OpImageQuerySizeLod : SPIRV::OpImageQuerySize;
5769 SPIRVTypeInst ImageType = GR.getSPIRVTypeForVReg(ImageReg);
5770 assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage &&
5771 "ImageReg is not an image type.");
5772
5773 auto Dim = static_cast<SPIRV::Dim::Dim>(ImageType->getOperand(2).getImm());
5774 bool IsArray = ImageType->getOperand(4).getImm() != 0;
5775 unsigned NumComponents = 0;
5776 switch (Dim) {
5777 case SPIRV::Dim::DIM_1D:
5778 case SPIRV::Dim::DIM_Buffer:
5779 NumComponents = IsArray ? 2 : 1;
5780 break;
5781 case SPIRV::Dim::DIM_2D:
5782 case SPIRV::Dim::DIM_Cube:
5783 case SPIRV::Dim::DIM_Rect:
5784 NumComponents = IsArray ? 3 : 2;
5785 break;
5786 case SPIRV::Dim::DIM_3D:
5787 NumComponents = 3;
5788 break;
5789 default:
5790 I.emitGenericError("Unsupported image dimension for OpImageQuerySize.");
5791 return false;
5792 }
5793
5794 SPIRVTypeInst I32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
5795 SPIRVTypeInst ResType =
5796 NumComponents == 1
5797 ? I32Ty
5798 : GR.getOrCreateSPIRVVectorType(I32Ty, NumComponents, I, TII);
5799
5800 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
5801 .addDef(ResVReg)
5802 .addUse(GR.getSPIRVTypeID(ResType))
5803 .addUse(ImageReg);
5804 if (LodReg)
5805 MIB.addUse(*LodReg);
5806 MIB.constrainAllUses(TII, TRI, RBI);
5807 return true;
5808}
5809
5810bool SPIRVInstructionSelector::selectGetDimensionsIntrinsic(
5811 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5812 Register ImageReg = I.getOperand(2).getReg();
5813 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5814 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5815 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5816 *ImageDef, I)) {
5817 return false;
5818 }
5819 return selectImageQuerySize(NewImageReg, ResVReg, I);
5820}
5821
5822bool SPIRVInstructionSelector::selectGetDimensionsLevelsIntrinsic(
5823 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5824 Register ImageReg = I.getOperand(2).getReg();
5825 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5826 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5827 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5828 *ImageDef, I)) {
5829 return false;
5830 }
5831
5832 Register SizeReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5833 Register LodReg = I.getOperand(3).getReg();
5834
5835 assert(GR.getSPIRVTypeForVReg(NewImageReg)->getOperand(6).getImm() == 1 &&
5836 "OpImageQuerySizeLod and OpImageQueryLevels require a sampled image");
5837
5838 if (!selectImageQuerySize(NewImageReg, SizeReg, I, LodReg)) {
5839 return false;
5840 }
5841
5842 SPIRVTypeInst I32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
5843 Register LevelsReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5844 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5845 TII.get(SPIRV::OpImageQueryLevels))
5846 .addDef(LevelsReg)
5847 .addUse(GR.getSPIRVTypeID(I32Ty))
5848 .addUse(NewImageReg)
5849 .constrainAllUses(TII, TRI, RBI);
5850
5851 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5852 TII.get(SPIRV::OpCompositeConstruct))
5853 .addDef(ResVReg)
5854 .addUse(GR.getSPIRVTypeID(ResType))
5855 .addUse(SizeReg)
5856 .addUse(LevelsReg)
5857 .constrainAllUses(TII, TRI, RBI);
5858
5859 return true;
5860}
5861
5862bool SPIRVInstructionSelector::selectGetDimensionsMSIntrinsic(
5863 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5864 Register ImageReg = I.getOperand(2).getReg();
5865 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5866 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5867 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5868 *ImageDef, I)) {
5869 return false;
5870 }
5871
5872 Register SizeReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5873
5874 assert(GR.getSPIRVTypeForVReg(NewImageReg)->getOperand(5).getImm() == 1 &&
5875 "OpImageQuerySamples requires a multisampled image");
5876
5877 if (!selectImageQuerySize(NewImageReg, SizeReg, I)) {
5878 return false;
5879 }
5880
5881 Register SamplesReg = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
5882
5883 SPIRVTypeInst I32Ty = GR.getOrCreateSPIRVIntegerType(32, I, TII);
5884 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5885 TII.get(SPIRV::OpImageQuerySamples))
5886 .addDef(SamplesReg)
5887 .addUse(GR.getSPIRVTypeID(I32Ty))
5888 .addUse(NewImageReg)
5889 .constrainAllUses(TII, TRI, RBI);
5890
5891 BuildMI(*I.getParent(), I, I.getDebugLoc(),
5892 TII.get(SPIRV::OpCompositeConstruct))
5893 .addDef(ResVReg)
5894 .addUse(GR.getSPIRVTypeID(ResType))
5895 .addUse(SizeReg)
5896 .addUse(SamplesReg)
5897 .constrainAllUses(TII, TRI, RBI);
5898
5899 return true;
5900}
5901
5902bool SPIRVInstructionSelector::selectCalculateLodIntrinsic(
5903 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5904 Register ImageReg = I.getOperand(2).getReg();
5905 Register SamplerReg = I.getOperand(3).getReg();
5906 Register CoordinateReg = I.getOperand(4).getReg();
5907
5908 auto *ImageDef = dyn_cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
5909 if (!ImageDef)
5910 return false;
5911 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
5912 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
5913 *ImageDef, I)) {
5914 return false;
5915 }
5916
5917 auto *SamplerDef = dyn_cast<GIntrinsic>(getVRegDef(*MRI, SamplerReg));
5918 if (!SamplerDef)
5919 return false;
5920 Register NewSamplerReg =
5921 MRI->createVirtualRegister(MRI->getRegClass(SamplerReg));
5922 if (!loadHandleBeforePosition(
5923 NewSamplerReg, GR.getSPIRVTypeForVReg(SamplerReg), *SamplerDef, I)) {
5924 return false;
5925 }
5926
5927 MachineIRBuilder MIRBuilder(I);
5928 SPIRVTypeInst SampledImageType = GR.getOrCreateOpTypeSampledImage(
5929 GR.getSPIRVTypeForVReg(ImageReg), MIRBuilder);
5930 Register SampledImageReg =
5931 MRI->createVirtualRegister(GR.getRegClass(SampledImageType));
5932
5933 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpSampledImage))
5934 .addDef(SampledImageReg)
5935 .addUse(GR.getSPIRVTypeID(SampledImageType))
5936 .addUse(NewImageReg)
5937 .addUse(NewSamplerReg)
5938 .constrainAllUses(TII, TRI, RBI);
5939
5940 SPIRVTypeInst Vec2Ty = GR.getOrCreateSPIRVVectorType(ResType, 2, I, TII);
5941 Register QueryResultReg = MRI->createVirtualRegister(GR.getRegClass(Vec2Ty));
5942
5943 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpImageQueryLod))
5944 .addDef(QueryResultReg)
5945 .addUse(GR.getSPIRVTypeID(Vec2Ty))
5946 .addUse(SampledImageReg)
5947 .addUse(CoordinateReg)
5948 .constrainAllUses(TII, TRI, RBI);
5949
5950 unsigned ExtractedIndex =
5951 cast<GIntrinsic>(I).getIntrinsicID() ==
5952 Intrinsic::spv_resource_calculate_lod_unclamped
5953 ? 1
5954 : 0;
5955
5956 MachineInstrBuilder MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
5957 TII.get(SPIRV::OpCompositeExtract))
5958 .addDef(ResVReg)
5959 .addUse(GR.getSPIRVTypeID(ResType))
5960 .addUse(QueryResultReg)
5961 .addImm(ExtractedIndex);
5962
5963 MIB.constrainAllUses(TII, TRI, RBI);
5964 return true;
5965}
5966
5967bool SPIRVInstructionSelector::selectSampleBasicIntrinsic(
5968 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5969 Register ImageReg = I.getOperand(2).getReg();
5970 Register SamplerReg = I.getOperand(3).getReg();
5971 Register CoordinateReg = I.getOperand(4).getReg();
5972 ImageOperands ImOps;
5973 if (I.getNumOperands() > 5)
5974 ImOps.Offset = I.getOperand(5).getReg();
5975 if (I.getNumOperands() > 6)
5976 ImOps.MinLod = I.getOperand(6).getReg();
5977 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
5978 CoordinateReg, ImOps, I.getDebugLoc(), I);
5979}
5980
5981bool SPIRVInstructionSelector::selectSampleBiasIntrinsic(
5982 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5983 Register ImageReg = I.getOperand(2).getReg();
5984 Register SamplerReg = I.getOperand(3).getReg();
5985 Register CoordinateReg = I.getOperand(4).getReg();
5986 ImageOperands ImOps;
5987 ImOps.Bias = I.getOperand(5).getReg();
5988 if (I.getNumOperands() > 6)
5989 ImOps.Offset = I.getOperand(6).getReg();
5990 if (I.getNumOperands() > 7)
5991 ImOps.MinLod = I.getOperand(7).getReg();
5992 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
5993 CoordinateReg, ImOps, I.getDebugLoc(), I);
5994}
5995
5996bool SPIRVInstructionSelector::selectSampleGradIntrinsic(
5997 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
5998 Register ImageReg = I.getOperand(2).getReg();
5999 Register SamplerReg = I.getOperand(3).getReg();
6000 Register CoordinateReg = I.getOperand(4).getReg();
6001 ImageOperands ImOps;
6002 ImOps.GradX = I.getOperand(5).getReg();
6003 ImOps.GradY = I.getOperand(6).getReg();
6004 if (I.getNumOperands() > 7)
6005 ImOps.Offset = I.getOperand(7).getReg();
6006 if (I.getNumOperands() > 8)
6007 ImOps.MinLod = I.getOperand(8).getReg();
6008 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6009 CoordinateReg, ImOps, I.getDebugLoc(), I);
6010}
6011
6012bool SPIRVInstructionSelector::selectSampleLevelIntrinsic(
6013 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6014 Register ImageReg = I.getOperand(2).getReg();
6015 Register SamplerReg = I.getOperand(3).getReg();
6016 Register CoordinateReg = I.getOperand(4).getReg();
6017 ImageOperands ImOps;
6018 ImOps.Lod = I.getOperand(5).getReg();
6019 if (I.getNumOperands() > 6)
6020 ImOps.Offset = I.getOperand(6).getReg();
6021 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6022 CoordinateReg, ImOps, I.getDebugLoc(), I);
6023}
6024
6025bool SPIRVInstructionSelector::selectSampleCmpIntrinsic(Register &ResVReg,
6026 SPIRVTypeInst ResType,
6027 MachineInstr &I) const {
6028 Register ImageReg = I.getOperand(2).getReg();
6029 Register SamplerReg = I.getOperand(3).getReg();
6030 Register CoordinateReg = I.getOperand(4).getReg();
6031 ImageOperands ImOps;
6032 ImOps.Compare = I.getOperand(5).getReg();
6033 if (I.getNumOperands() > 6)
6034 ImOps.Offset = I.getOperand(6).getReg();
6035 if (I.getNumOperands() > 7)
6036 ImOps.MinLod = I.getOperand(7).getReg();
6037 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6038 CoordinateReg, ImOps, I.getDebugLoc(), I);
6039}
6040
6041bool SPIRVInstructionSelector::selectLoadLevelIntrinsic(Register &ResVReg,
6042 SPIRVTypeInst ResType,
6043 MachineInstr &I) const {
6044 Register ImageReg = I.getOperand(2).getReg();
6045 Register CoordinateReg = I.getOperand(3).getReg();
6046 Register LodReg = I.getOperand(4).getReg();
6047
6048 ImageOperands ImOps;
6049 ImOps.Lod = LodReg;
6050 if (I.getNumOperands() > 5)
6051 ImOps.Offset = I.getOperand(5).getReg();
6052
6053 auto *ImageDef = dyn_cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
6054 if (!ImageDef)
6055 return false;
6056
6057 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
6058 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
6059 *ImageDef, I)) {
6060 return false;
6061 }
6062
6063 return generateImageReadOrFetch(ResVReg, ResType, NewImageReg, CoordinateReg,
6064 I.getDebugLoc(), I, &ImOps);
6065}
6066
6067bool SPIRVInstructionSelector::selectSampleCmpLevelZeroIntrinsic(
6068 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6069 Register ImageReg = I.getOperand(2).getReg();
6070 Register SamplerReg = I.getOperand(3).getReg();
6071 Register CoordinateReg = I.getOperand(4).getReg();
6072 ImageOperands ImOps;
6073 ImOps.Compare = I.getOperand(5).getReg();
6074 if (I.getNumOperands() > 6)
6075 ImOps.Offset = I.getOperand(6).getReg();
6076 SPIRVTypeInst FloatTy = GR.getOrCreateSPIRVFloatType(32, I, TII);
6077 ImOps.Lod = GR.getOrCreateConstFP(APFloat(0.0f), I, FloatTy, TII);
6078 return generateSampleImage(ResVReg, ResType, ImageReg, SamplerReg,
6079 CoordinateReg, ImOps, I.getDebugLoc(), I);
6080}
6081
6082bool SPIRVInstructionSelector::selectGatherIntrinsic(Register &ResVReg,
6083 SPIRVTypeInst ResType,
6084 MachineInstr &I) const {
6085 Register ImageReg = I.getOperand(2).getReg();
6086 Register SamplerReg = I.getOperand(3).getReg();
6087 Register CoordinateReg = I.getOperand(4).getReg();
6088 SPIRVTypeInst ImageType = GR.getSPIRVTypeForVReg(ImageReg);
6089 assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage &&
6090 "ImageReg is not an image type.");
6091
6092 Register ComponentOrCompareReg;
6093 Register OffsetReg;
6094
6095 ComponentOrCompareReg = I.getOperand(5).getReg();
6096 OffsetReg = I.getOperand(6).getReg();
6097 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
6098 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
6099 if (!loadHandleBeforePosition(NewImageReg, ImageType, *ImageDef, I)) {
6100 return false;
6101 }
6102
6103 auto Dim = static_cast<SPIRV::Dim::Dim>(ImageType->getOperand(2).getImm());
6104 if (Dim != SPIRV::Dim::DIM_2D && Dim != SPIRV::Dim::DIM_Cube &&
6105 Dim != SPIRV::Dim::DIM_Rect) {
6106 I.emitGenericError(
6107 "Gather operations are only supported for 2D, Cube, and Rect images.");
6108 return false;
6109 }
6110
6111 auto *SamplerDef = cast<GIntrinsic>(getVRegDef(*MRI, SamplerReg));
6112 Register NewSamplerReg =
6113 MRI->createVirtualRegister(MRI->getRegClass(SamplerReg));
6114 if (!loadHandleBeforePosition(
6115 NewSamplerReg, GR.getSPIRVTypeForVReg(SamplerReg), *SamplerDef, I)) {
6116 return false;
6117 }
6118
6119 MachineIRBuilder MIRBuilder(I);
6120 SPIRVTypeInst SampledImageType =
6121 GR.getOrCreateOpTypeSampledImage(ImageType, MIRBuilder);
6122 Register SampledImageReg =
6123 MRI->createVirtualRegister(GR.getRegClass(SampledImageType));
6124
6125 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpSampledImage))
6126 .addDef(SampledImageReg)
6127 .addUse(GR.getSPIRVTypeID(SampledImageType))
6128 .addUse(NewImageReg)
6129 .addUse(NewSamplerReg)
6130 .constrainAllUses(TII, TRI, RBI);
6131
6132 auto IntrId = cast<GIntrinsic>(I).getIntrinsicID();
6133 bool IsGatherCmp = IntrId == Intrinsic::spv_resource_gather_cmp;
6134 unsigned Opcode =
6135 IsGatherCmp ? SPIRV::OpImageDrefGather : SPIRV::OpImageGather;
6136
6137 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(Opcode))
6138 .addDef(ResVReg)
6139 .addUse(GR.getSPIRVTypeID(ResType))
6140 .addUse(SampledImageReg)
6141 .addUse(CoordinateReg)
6142 .addUse(ComponentOrCompareReg);
6143
6144 uint32_t ImageOperands = 0;
6145 if (OffsetReg && !isScalarOrVectorIntConstantZero(OffsetReg)) {
6146 if (Dim == SPIRV::Dim::DIM_Cube) {
6147 I.emitGenericError(
6148 "Gather operations with offset are not supported for Cube images.");
6149 return false;
6150 }
6151 if (isConstReg(MRI, OffsetReg))
6152 ImageOperands |= SPIRV::ImageOperand::ConstOffset;
6153 else {
6154 ImageOperands |= SPIRV::ImageOperand::Offset;
6155 }
6156 }
6157
6158 if (ImageOperands != 0) {
6159 MIB.addImm(ImageOperands);
6160 if (ImageOperands &
6161 (SPIRV::ImageOperand::ConstOffset | SPIRV::ImageOperand::Offset))
6162 MIB.addUse(OffsetReg);
6163 }
6164
6165 MIB.constrainAllUses(TII, TRI, RBI);
6166 return true;
6167}
6168
6169bool SPIRVInstructionSelector::generateImageReadOrFetch(
6170 Register &ResVReg, SPIRVTypeInst ResType, Register ImageReg,
6171 Register IdxReg, DebugLoc Loc, MachineInstr &Pos,
6172 const ImageOperands *ImOps) const {
6173 SPIRVTypeInst ImageType = GR.getSPIRVTypeForVReg(ImageReg);
6174 assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage &&
6175 "ImageReg is not an image type.");
6176
6177 bool IsSignedInteger =
6178 sampledTypeIsSignedInteger(GR.getTypeForSPIRVType(ImageType));
6179 // Check if the "sampled" operand of the image type is 1.
6180 // https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#OpImageFetch
6181 auto SampledOp = ImageType->getOperand(6);
6182 bool IsFetch = (SampledOp.getImm() == 1);
6183
6184 auto AddOperands = [&](MachineInstrBuilder &MIB) {
6185 uint32_t ImageOperandsMask = 0;
6186 if (IsSignedInteger)
6187 ImageOperandsMask |= 0x1000; // SignExtend
6188
6189 if (IsFetch && ImOps) {
6190 if (ImOps->Lod)
6191 ImageOperandsMask |= SPIRV::ImageOperand::Lod;
6192 if (ImOps->Offset && !isScalarOrVectorIntConstantZero(*ImOps->Offset)) {
6193 if (isConstReg(MRI, *ImOps->Offset))
6194 ImageOperandsMask |= SPIRV::ImageOperand::ConstOffset;
6195 else
6196 ImageOperandsMask |= SPIRV::ImageOperand::Offset;
6197 }
6198 }
6199
6200 if (ImageOperandsMask != 0) {
6201 MIB.addImm(ImageOperandsMask);
6202 if (IsFetch && ImOps) {
6203 if (ImOps->Lod)
6204 MIB.addUse(*ImOps->Lod);
6205 if (ImOps->Offset &&
6206 (ImageOperandsMask &
6207 (SPIRV::ImageOperand::Offset | SPIRV::ImageOperand::ConstOffset)))
6208 MIB.addUse(*ImOps->Offset);
6209 }
6210 }
6211 };
6212
6213 uint64_t ResultSize = GR.getScalarOrVectorComponentCount(ResType);
6214 if (ResultSize == 4) {
6215 auto BMI =
6216 BuildMI(*Pos.getParent(), Pos, Loc,
6217 TII.get(IsFetch ? SPIRV::OpImageFetch : SPIRV::OpImageRead))
6218 .addDef(ResVReg)
6219 .addUse(GR.getSPIRVTypeID(ResType))
6220 .addUse(ImageReg)
6221 .addUse(IdxReg);
6222
6223 AddOperands(BMI);
6224 BMI.constrainAllUses(TII, TRI, RBI);
6225 return true;
6226 }
6227
6228 SPIRVTypeInst ReadType = widenTypeToVec4(ResType, Pos);
6229 Register ReadReg = MRI->createVirtualRegister(GR.getRegClass(ReadType));
6230 auto BMI =
6231 BuildMI(*Pos.getParent(), Pos, Loc,
6232 TII.get(IsFetch ? SPIRV::OpImageFetch : SPIRV::OpImageRead))
6233 .addDef(ReadReg)
6234 .addUse(GR.getSPIRVTypeID(ReadType))
6235 .addUse(ImageReg)
6236 .addUse(IdxReg);
6237 AddOperands(BMI);
6238 BMI.constrainAllUses(TII, TRI, RBI);
6239
6240 if (ResultSize == 1) {
6241 BuildMI(*Pos.getParent(), Pos, Loc, TII.get(SPIRV::OpCompositeExtract))
6242 .addDef(ResVReg)
6243 .addUse(GR.getSPIRVTypeID(ResType))
6244 .addUse(ReadReg)
6245 .addImm(0)
6246 .constrainAllUses(TII, TRI, RBI);
6247 return true;
6248 }
6249 return extractSubvector(ResVReg, ResType, ReadReg, Pos);
6250}
6251
6252bool SPIRVInstructionSelector::selectResourceGetPointer(Register &ResVReg,
6253 SPIRVTypeInst ResType,
6254 MachineInstr &I) const {
6255 Register ResourcePtr = I.getOperand(2).getReg();
6256 SPIRVTypeInst RegType = GR.getSPIRVTypeForVReg(ResourcePtr, I.getMF());
6257 if (RegType->getOpcode() == SPIRV::OpTypeImage) {
6258 // For texel buffers, the index into the image is part of the OpImageRead or
6259 // OpImageWrite instructions. So we will do nothing in this case. This
6260 // intrinsic will be combined with the load or store when selecting the load
6261 // or store.
6262 return true;
6263 }
6264
6265 assert(ResType->getOpcode() == SPIRV::OpTypePointer);
6266 MachineIRBuilder MIRBuilder(I);
6267
6268 Register ZeroReg =
6269 buildZerosVal(GR.getOrCreateSPIRVIntegerType(32, I, TII), I);
6270 auto MIB =
6271 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpAccessChain))
6272 .addDef(ResVReg)
6273 .addUse(GR.getSPIRVTypeID(ResType))
6274 .addUse(ResourcePtr)
6275 .addUse(ZeroReg);
6276
6277 if (I.getNumExplicitOperands() > 3) {
6278 Register IndexReg = I.getOperand(3).getReg();
6279 MIB.addUse(IndexReg);
6280 }
6281 MIB.constrainAllUses(TII, TRI, RBI);
6282 return true;
6283}
6284
6285bool SPIRVInstructionSelector::selectPushConstantGetPointer(
6286 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6287 MRI->replaceRegWith(ResVReg, I.getOperand(2).getReg());
6288 return true;
6289}
6290
6291bool SPIRVInstructionSelector::selectResourceNonUniformIndex(
6292 Register &ResVReg, SPIRVTypeInst ResType, MachineInstr &I) const {
6293 Register ObjReg = I.getOperand(2).getReg();
6294 if (!BuildCOPY(ResVReg, ObjReg, I))
6295 return false;
6296
6297 buildOpDecorate(ResVReg, I, TII, SPIRV::Decoration::NonUniformEXT, {});
6298 // Check for the registers that use the index marked as non-uniform
6299 // and recursively mark them as non-uniform.
6300 // Per the spec, it's necessary that the final argument used for
6301 // load/store/sample/atomic must be decorated, so we need to propagate the
6302 // decoration through access chains and copies.
6303 // https://docs.vulkan.org/samples/latest/samples/extensions/descriptor_indexing/README.html#_when_to_use_non_uniform_indexing_qualifier
6304 decorateUsesAsNonUniform(ResVReg);
6305 return true;
6306}
6307
6308void SPIRVInstructionSelector::decorateUsesAsNonUniform(
6309 Register &NonUniformReg) const {
6310 llvm::SmallVector<Register> WorkList = {NonUniformReg};
6311 while (WorkList.size() > 0) {
6312 Register CurrentReg = WorkList.back();
6313 WorkList.pop_back();
6314
6315 bool IsDecorated = false;
6316 for (MachineInstr &Use : MRI->use_instructions(CurrentReg)) {
6317 if (Use.getOpcode() == SPIRV::OpDecorate &&
6318 Use.getOperand(1).getImm() == SPIRV::Decoration::NonUniformEXT) {
6319 IsDecorated = true;
6320 continue;
6321 }
6322 // Check if the instruction has the result register and add it to the
6323 // worklist.
6324 if (Use.getOperand(0).isReg() && Use.getOperand(0).isDef()) {
6325 Register ResultReg = Use.getOperand(0).getReg();
6326 if (ResultReg == CurrentReg)
6327 continue;
6328 WorkList.push_back(ResultReg);
6329 }
6330 }
6331
6332 if (!IsDecorated) {
6333 buildOpDecorate(CurrentReg, *MRI->getVRegDef(CurrentReg), TII,
6334 SPIRV::Decoration::NonUniformEXT, {});
6335 }
6336 }
6337}
6338
6339bool SPIRVInstructionSelector::extractSubvector(
6340 Register &ResVReg, SPIRVTypeInst ResType, Register &ReadReg,
6341 MachineInstr &InsertionPoint) const {
6342 SPIRVTypeInst InputType = GR.getResultType(ReadReg);
6343 [[maybe_unused]] uint64_t InputSize =
6344 GR.getScalarOrVectorComponentCount(InputType);
6345 uint64_t ResultSize = GR.getScalarOrVectorComponentCount(ResType);
6346 assert(InputSize > 1 && "The input must be a vector.");
6347 assert(ResultSize > 1 && "The result must be a vector.");
6348 assert(ResultSize < InputSize &&
6349 "Cannot extract more element than there are in the input.");
6350 SmallVector<Register> ComponentRegisters;
6351 SPIRVTypeInst ScalarType = GR.getScalarOrVectorComponentType(ResType);
6352 const TargetRegisterClass *ScalarRegClass = GR.getRegClass(ScalarType);
6353 for (uint64_t I = 0; I < ResultSize; I++) {
6354 Register ComponentReg = MRI->createVirtualRegister(ScalarRegClass);
6355 BuildMI(*InsertionPoint.getParent(), InsertionPoint,
6356 InsertionPoint.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
6357 .addDef(ComponentReg)
6358 .addUse(ScalarType->getOperand(0).getReg())
6359 .addUse(ReadReg)
6360 .addImm(I)
6361 .constrainAllUses(TII, TRI, RBI);
6362 ComponentRegisters.emplace_back(ComponentReg);
6363 }
6364
6365 MachineInstrBuilder MIB = BuildMI(*InsertionPoint.getParent(), InsertionPoint,
6366 InsertionPoint.getDebugLoc(),
6367 TII.get(SPIRV::OpCompositeConstruct))
6368 .addDef(ResVReg)
6369 .addUse(GR.getSPIRVTypeID(ResType));
6370
6371 for (Register ComponentReg : ComponentRegisters)
6372 MIB.addUse(ComponentReg);
6373 MIB.constrainAllUses(TII, TRI, RBI);
6374 return true;
6375}
6376
6377bool SPIRVInstructionSelector::selectImageWriteIntrinsic(
6378 MachineInstr &I) const {
6379 // If the load of the image is in a different basic block, then
6380 // this will generate invalid code. A proper solution is to move
6381 // the OpLoad from selectHandleFromBinding here. However, to do
6382 // that we will need to change the return type of the intrinsic.
6383 // We will do that when we can, but for now trying to move forward with other
6384 // issues.
6385 Register ImageReg = I.getOperand(1).getReg();
6386 auto *ImageDef = cast<GIntrinsic>(getVRegDef(*MRI, ImageReg));
6387 Register NewImageReg = MRI->createVirtualRegister(MRI->getRegClass(ImageReg));
6388 if (!loadHandleBeforePosition(NewImageReg, GR.getSPIRVTypeForVReg(ImageReg),
6389 *ImageDef, I)) {
6390 return false;
6391 }
6392
6393 Register CoordinateReg = I.getOperand(2).getReg();
6394 Register DataReg = I.getOperand(3).getReg();
6395 assert(GR.getResultType(DataReg)->getOpcode() == SPIRV::OpTypeVector);
6396 assert(GR.getScalarOrVectorComponentCount(GR.getResultType(DataReg)) == 4);
6397 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpImageWrite))
6398 .addUse(NewImageReg)
6399 .addUse(CoordinateReg)
6400 .addUse(DataReg)
6401 .constrainAllUses(TII, TRI, RBI);
6402 return true;
6403}
6404
6405Register SPIRVInstructionSelector::buildPointerToResource(
6406 SPIRVTypeInst SpirvResType, SPIRV::StorageClass::StorageClass SC,
6407 uint32_t Set, uint32_t Binding, uint32_t ArraySize, Register IndexReg,
6408 StringRef Name, MachineIRBuilder MIRBuilder) const {
6409 const Type *ResType = GR.getTypeForSPIRVType(SpirvResType);
6410 if (ArraySize == 1) {
6411 SPIRVTypeInst PtrType =
6412 GR.getOrCreateSPIRVPointerType(ResType, MIRBuilder, SC);
6413 assert(GR.getPointeeType(PtrType) == SpirvResType &&
6414 "SpirvResType did not have an explicit layout.");
6415 return GR.getOrCreateGlobalVariableWithBinding(PtrType, Set, Binding, Name,
6416 MIRBuilder);
6417 }
6418
6419 const Type *VarType = ArrayType::get(const_cast<Type *>(ResType), ArraySize);
6420 SPIRVTypeInst VarPointerType =
6421 GR.getOrCreateSPIRVPointerType(VarType, MIRBuilder, SC);
6422 Register VarReg = GR.getOrCreateGlobalVariableWithBinding(
6423 VarPointerType, Set, Binding, Name, MIRBuilder);
6424
6425 SPIRVTypeInst ResPointerType =
6426 GR.getOrCreateSPIRVPointerType(ResType, MIRBuilder, SC);
6427 Register AcReg = MRI->createVirtualRegister(GR.getRegClass(ResPointerType));
6428
6429 MIRBuilder.buildInstr(SPIRV::OpAccessChain)
6430 .addDef(AcReg)
6431 .addUse(GR.getSPIRVTypeID(ResPointerType))
6432 .addUse(VarReg)
6433 .addUse(IndexReg);
6434
6435 return AcReg;
6436}
6437
6438bool SPIRVInstructionSelector::selectFirstBitSet16(
6439 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I,
6440 unsigned ExtendOpcode, unsigned BitSetOpcode) const {
6441 Register ExtReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6442 if (!selectOpWithSrcs(ExtReg, ResType, I, {I.getOperand(2).getReg()},
6443 ExtendOpcode))
6444 return false;
6445
6446 return selectFirstBitSet32(ResVReg, ResType, I, ExtReg, BitSetOpcode);
6447}
6448
6449bool SPIRVInstructionSelector::selectFirstBitSet32(
6450 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, Register SrcReg,
6451 unsigned BitSetOpcode) const {
6452 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
6453 .addDef(ResVReg)
6454 .addUse(GR.getSPIRVTypeID(ResType))
6455 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
6456 .addImm(BitSetOpcode)
6457 .addUse(SrcReg)
6458 .constrainAllUses(TII, TRI, RBI);
6459 return true;
6460}
6461
6462bool SPIRVInstructionSelector::selectFirstBitSet64(
6463 Register ResVReg, SPIRVTypeInst ResType, MachineInstr &I, Register SrcReg,
6464 unsigned BitSetOpcode, bool SwapPrimarySide) const {
6465 unsigned ComponentCount = GR.getScalarOrVectorComponentCount(ResType);
6466 SPIRVTypeInst BaseType = GR.retrieveScalarOrVectorIntType(ResType);
6467 bool ZeroAsNull = !STI.isShader();
6468 Register ConstIntZero =
6469 GR.getOrCreateConstInt(0, I, BaseType, TII, ZeroAsNull);
6470 Register ConstIntOne =
6471 GR.getOrCreateConstInt(1, I, BaseType, TII, ZeroAsNull);
6472
6473 // SPIRV doesn't support vectors with more than 4 components. Since the
6474 // algoritm below converts i64 -> i32x2 and i64x4 -> i32x8 it can only
6475 // operate on vectors with 2 or less components. When largers vectors are
6476 // seen. Split them, recurse, then recombine them.
6477 if (ComponentCount > 2) {
6478 auto Func = [this, SwapPrimarySide](Register ResVReg, SPIRVTypeInst ResType,
6479 MachineInstr &I, Register SrcReg,
6480 unsigned Opcode) -> bool {
6481 return this->selectFirstBitSet64(ResVReg, ResType, I, SrcReg, Opcode,
6482 SwapPrimarySide);
6483 };
6484
6485 return handle64BitOverflow(ResVReg, ResType, I, SrcReg, BitSetOpcode, Func);
6486 }
6487
6488 // 1. Split int64 into 2 pieces using a bitcast
6489 MachineIRBuilder MIRBuilder(I);
6490 SPIRVTypeInst PostCastType = GR.getOrCreateSPIRVVectorType(
6491 BaseType, 2 * ComponentCount, MIRBuilder, false);
6492 Register BitcastReg =
6493 MRI->createVirtualRegister(GR.getRegClass(PostCastType));
6494
6495 if (!selectOpWithSrcs(BitcastReg, PostCastType, I, {SrcReg},
6496 SPIRV::OpBitcast))
6497 return false;
6498
6499 // 2. Find the first set bit from the primary side for all the pieces in #1
6500 Register FBSReg = MRI->createVirtualRegister(GR.getRegClass(PostCastType));
6501 if (!selectFirstBitSet32(FBSReg, PostCastType, I, BitcastReg, BitSetOpcode))
6502 return false;
6503
6504 // 3. Split result vector into high bits and low bits
6505 Register HighReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6506 Register LowReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
6507
6508 bool IsScalarRes = ResType->getOpcode() != SPIRV::OpTypeVector;
6509 if (IsScalarRes) {
6510 // if scalar do a vector extract
6511 if (!selectOpWithSrcs(HighReg, ResType, I, {FBSReg, ConstIntOne},
6512 SPIRV::OpVectorExtractDynamic))
6513 return false;
6514 if (!selectOpWithSrcs(LowReg, ResType, I, {FBSReg, ConstIntZero},
6515 SPIRV::OpVectorExtractDynamic))
6516 return false;
6517 } else {
6518 // if vector do a shufflevector
6519 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
6520 TII.get(SPIRV::OpVectorShuffle))
6521 .addDef(HighReg)
6522 .addUse(GR.getSPIRVTypeID(ResType))
6523 .addUse(FBSReg)
6524 // Per the spec, repeat the vector if only one vec is needed
6525 .addUse(FBSReg);
6526
6527 // high bits are stored in even natural indexes. Extract them from FBSReg
6528 for (unsigned J = 1; J < ComponentCount * 2; J += 2) {
6529 MIB.addImm(J);
6530 }
6531
6532 MIB.constrainAllUses(TII, TRI, RBI);
6533
6534 MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(),
6535 TII.get(SPIRV::OpVectorShuffle))
6536 .addDef(LowReg)
6537 .addUse(GR.getSPIRVTypeID(ResType))
6538 .addUse(FBSReg)
6539 // Per the spec, repeat the vector if only one vec is needed
6540 .addUse(FBSReg);
6541
6542 // low bits are stored in odd natural indices. Extract them from FBSReg
6543 for (unsigned J = 0; J < ComponentCount * 2; J += 2) {
6544 MIB.addImm(J);
6545 }
6546 MIB.constrainAllUses(TII, TRI, RBI);
6547 }
6548
6549 // 4. Check the result. When primary bits == -1 use secondary, otherwise use
6550 // primary
6551 SPIRVTypeInst BoolType = GR.getOrCreateSPIRVBoolType(I, TII);
6552 Register NegOneReg;
6553 Register Reg0;
6554 Register Reg32;
6555 unsigned SelectOp;
6556 unsigned AddOp;
6557
6558 if (IsScalarRes) {
6559 NegOneReg =
6560 GR.getOrCreateConstInt((unsigned)-1, I, ResType, TII, ZeroAsNull);
6561 Reg0 = GR.getOrCreateConstInt(0, I, ResType, TII, ZeroAsNull);
6562 Reg32 = GR.getOrCreateConstInt(32, I, ResType, TII, ZeroAsNull);
6563 SelectOp = SPIRV::OpSelectSISCond;
6564 AddOp = SPIRV::OpIAddS;
6565 } else {
6566 BoolType = GR.getOrCreateSPIRVVectorType(BoolType, ComponentCount,
6567 MIRBuilder, false);
6568 NegOneReg =
6569 GR.getOrCreateConstVector((unsigned)-1, I, ResType, TII, ZeroAsNull);
6570 Reg0 = GR.getOrCreateConstVector(0, I, ResType, TII, ZeroAsNull);
6571 Reg32 = GR.getOrCreateConstVector(32, I, ResType, TII, ZeroAsNull);
6572 SelectOp = SPIRV::OpSelectVIVCond;
6573 AddOp = SPIRV::OpIAddV;
6574 }
6575
6576 Register PrimaryReg = HighReg;
6577 Register SecondaryReg = LowReg;
6578 Register RegPrimaryOffset = Reg32;
6579 Register RegSecondaryOffset = Reg0;
6580
6581 // By default the emitted opcodes check for the set bit from the MSB side.
6582 // Setting SwapPrimarySide checks the set bit from the LSB side
6583 if (SwapPrimarySide) {
6584 PrimaryReg = LowReg;
6585 SecondaryReg = HighReg;
6586 RegPrimaryOffset = Reg0;
6587 RegSecondaryOffset = Reg32;
6588 }
6589
6590 Register RegSecondaryHasVal =
6591 MRI->createVirtualRegister(GR.getRegClass(BoolType));
6592 if (!selectOpWithSrcs(RegSecondaryHasVal, BoolType, I,
6593 {SecondaryReg, NegOneReg}, SPIRV::OpINotEqual))
6594 return false;
6595
6596 Register RegPrimaryHasVal =
6597 MRI->createVirtualRegister(GR.getRegClass(BoolType));
6598 if (!selectOpWithSrcs(RegPrimaryHasVal, BoolType, I, {PrimaryReg, NegOneReg},
6599 SPIRV::OpINotEqual))
6600 return false;
6601
6602 // Pass 1: seed with secondary (lower-priority fallback)
6603 // ReturnBits = secondaryHasVal ? SecondaryBits : -1
6604 // Add = secondaryHasVal ? SecondaryOffset : 0
6605 Register RegReturnBits = MRI->createVirtualRegister(GR.getRegClass(ResType));
6606 if (!selectOpWithSrcs(RegReturnBits, ResType, I,
6607 {RegSecondaryHasVal, SecondaryReg, NegOneReg},
6608 SelectOp))
6609 return false;
6610
6611 Register RegAdd;
6612 if (SwapPrimarySide) {
6613 RegAdd = MRI->createVirtualRegister(GR.getRegClass(ResType));
6614 if (!selectOpWithSrcs(RegAdd, ResType, I,
6615 {RegSecondaryHasVal, RegSecondaryOffset, Reg0},
6616 SelectOp))
6617 return false;
6618 } else {
6619 RegAdd = Reg0;
6620 }
6621
6622 // Pass 2: override with primary (higher priority) if it has a valid result
6623 // ReturnBits2 = primaryHasVal ? PrimaryBits : ReturnBits
6624 // Add2 = primaryHasVal ? PrimaryOffset : Add
6625 Register RegReturnBits2 = MRI->createVirtualRegister(GR.getRegClass(ResType));
6626 if (!selectOpWithSrcs(RegReturnBits2, ResType, I,
6627 {RegPrimaryHasVal, PrimaryReg, RegReturnBits},
6628 SelectOp))
6629 return false;
6630
6631 Register RegAdd2 = MRI->createVirtualRegister(GR.getRegClass(ResType));
6632 if (!selectOpWithSrcs(RegAdd2, ResType, I,
6633 {RegPrimaryHasVal, RegPrimaryOffset, RegAdd}, SelectOp))
6634 return false;
6635
6636 return selectOpWithSrcs(ResVReg, ResType, I, {RegReturnBits2, RegAdd2},
6637 AddOp);
6638}
6639
6640bool SPIRVInstructionSelector::selectFirstBitHigh(Register ResVReg,
6641 SPIRVTypeInst ResType,
6642 MachineInstr &I,
6643 bool IsSigned) const {
6644 // FindUMsb and FindSMsb intrinsics only support 32 bit integers
6645 Register OpReg = I.getOperand(2).getReg();
6646 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
6647 // zero or sign extend
6648 unsigned ExtendOpcode = IsSigned ? SPIRV::OpSConvert : SPIRV::OpUConvert;
6649 unsigned BitSetOpcode = IsSigned ? GL::FindSMsb : GL::FindUMsb;
6650
6651 switch (GR.getScalarOrVectorBitWidth(OpType)) {
6652 case 16:
6653 return selectFirstBitSet16(ResVReg, ResType, I, ExtendOpcode, BitSetOpcode);
6654 case 32:
6655 return selectFirstBitSet32(ResVReg, ResType, I, OpReg, BitSetOpcode);
6656 case 64:
6657 return selectFirstBitSet64(ResVReg, ResType, I, OpReg, BitSetOpcode,
6658 /*SwapPrimarySide=*/false);
6659 default:
6660 return diagnoseUnsupported(
6661 I,
6662 "spv_firstbituhigh and spv_firstbitshigh only support 16,32,64 bits.");
6663 }
6664}
6665
6666bool SPIRVInstructionSelector::selectFirstBitLow(Register ResVReg,
6667 SPIRVTypeInst ResType,
6668 MachineInstr &I) const {
6669 // FindILsb intrinsic only supports 32 bit integers
6670 Register OpReg = I.getOperand(2).getReg();
6671 SPIRVTypeInst OpType = GR.getSPIRVTypeForVReg(OpReg);
6672 // OpUConvert treats the operand bits as an unsigned i16 and zero extends it
6673 // to an unsigned i32. As this leaves all the least significant bits unchanged
6674 // so the first set bit from the LSB side doesn't change.
6675 unsigned ExtendOpcode = SPIRV::OpUConvert;
6676 unsigned BitSetOpcode = GL::FindILsb;
6677
6678 switch (GR.getScalarOrVectorBitWidth(OpType)) {
6679 case 16:
6680 return selectFirstBitSet16(ResVReg, ResType, I, ExtendOpcode, BitSetOpcode);
6681 case 32:
6682 return selectFirstBitSet32(ResVReg, ResType, I, OpReg, BitSetOpcode);
6683 case 64:
6684 return selectFirstBitSet64(ResVReg, ResType, I, OpReg, BitSetOpcode,
6685 /*SwapPrimarySide=*/true);
6686 default:
6687 return diagnoseUnsupported(I,
6688 "spv_firstbitlow only supports 16,32,64 bits.");
6689 }
6690}
6691
6692bool SPIRVInstructionSelector::selectAllocaArray(Register ResVReg,
6693 SPIRVTypeInst ResType,
6694 MachineInstr &I) const {
6695 // there was an allocation size parameter to the allocation instruction
6696 // that is not 1
6697 MachineBasicBlock &BB = *I.getParent();
6698 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpVariableLengthArrayINTEL))
6699 .addDef(ResVReg)
6700 .addUse(GR.getSPIRVTypeID(ResType))
6701 .addUse(I.getOperand(2).getReg())
6702 .constrainAllUses(TII, TRI, RBI);
6703 if (!STI.isShader()) {
6704 unsigned Alignment = I.getOperand(3).getImm();
6705 buildOpDecorate(ResVReg, I, TII, SPIRV::Decoration::Alignment, {Alignment});
6706 }
6707 return true;
6708}
6709
6710// Returns true iff `Ty` is a concrete SPIR-V type per the SPV_KHR_abort
6711// definition: a numerical scalar (int/float), a (physical) pointer, a vector,
6712// matrix or any aggregate (array/struct) recursively containing only such
6713// types. OpTypeBool, OpTypeVoid, opaque handles and similar abstract
6714// non-concrete types are rejected.
6715static bool isConcreteSPIRVType(SPIRVTypeInst Ty,
6716 const SPIRVGlobalRegistry &GR) {
6717 SmallVector<SPIRVTypeInst, 4> Worklist{Ty};
6718 while (!Worklist.empty()) {
6719 SPIRVTypeInst T = Worklist.pop_back_val();
6720 switch (T->getOpcode()) {
6721 case SPIRV::OpTypeInt:
6722 case SPIRV::OpTypeFloat:
6723 case SPIRV::OpTypePointer:
6724 break;
6725 case SPIRV::OpTypeVector:
6726 case SPIRV::OpTypeMatrix:
6727 case SPIRV::OpTypeArray: {
6728 Register OperandReg = T->getOperand(1).getReg();
6729 SPIRVTypeInst ElementT = GR.getSPIRVTypeForVReg(OperandReg);
6730 Worklist.push_back(ElementT);
6731 } break;
6732 case SPIRV::OpTypeStruct:
6733 for (unsigned Idx = 1, E = T->getNumOperands(); Idx < E; ++Idx) {
6734 Register OperandReg = T->getOperand(Idx).getReg();
6735 SPIRVTypeInst ElementT = GR.getSPIRVTypeForVReg(OperandReg);
6736 Worklist.push_back(ElementT);
6737 }
6738 break;
6739 default:
6740 return false;
6741 }
6742 }
6743 return true;
6744}
6745
6746bool SPIRVInstructionSelector::selectAbort(MachineInstr &I) const {
6747 assert(I.getNumExplicitOperands() == 2);
6748
6749 Register MsgReg = I.getOperand(1).getReg();
6750 SPIRVTypeInst MsgType = GR.getSPIRVTypeForVReg(MsgReg);
6751 assert(MsgType && "Message argument of llvm.spv.abort has no SPIR-V type");
6752
6753 if (!isConcreteSPIRVType(MsgType, GR))
6754 return diagnoseUnsupported(
6755 I,
6756 "llvm.spv.abort message type must be a concrete SPIR-V type (numerical "
6757 "scalar, pointer, vector, matrix, or aggregate of such types)");
6758
6759 MachineBasicBlock &BB = *I.getParent();
6760 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpAbortKHR))
6761 .addUse(GR.getSPIRVTypeID(MsgType))
6762 .addUse(MsgReg)
6763 .constrainAllUses(TII, TRI, RBI);
6764 return true;
6765}
6766
6767bool SPIRVInstructionSelector::selectTrap(MachineInstr &I) const {
6768 // When the SPV_KHR_abort extension is disabled, drop the G_TRAP and
6769 // G_UBSANTRAP silently.
6770 if (!STI.canUseExtension(SPIRV::Extension::SPV_KHR_abort))
6771 return true;
6772
6773 // Use the 32-bit integer constant for the abort "message" argument:
6774 // - G_UBSANTRAP operand is zero-extended to 32 bits.
6775 // - "All ones" constant is used for G_TRAP.
6776 uint32_t MsgVal = ~0u;
6777 if (I.getOpcode() == TargetOpcode::G_UBSANTRAP)
6778 MsgVal = static_cast<uint32_t>(I.getOperand(0).getImm());
6779
6780 SPIRVTypeInst MsgType = GR.getOrCreateSPIRVIntegerType(32, I, TII);
6781 Register MsgReg = buildI32ConstantInEntryBlock(MsgVal, I, MsgType);
6782
6783 MachineBasicBlock &BB = *I.getParent();
6784 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpAbortKHR))
6785 .addUse(GR.getSPIRVTypeID(MsgType))
6786 .addUse(MsgReg)
6787 .constrainAllUses(TII, TRI, RBI);
6788 return true;
6789}
6790
6791bool SPIRVInstructionSelector::selectFrameIndex(Register ResVReg,
6792 SPIRVTypeInst ResType,
6793 MachineInstr &I) const {
6794 // Change order of instructions if needed: all OpVariable instructions in a
6795 // function must be the first instructions in the first block
6796 auto It = getOpVariableMBBIt(*I.getMF());
6797 BuildMI(*It->getParent(), It, It->getDebugLoc(), TII.get(SPIRV::OpVariable))
6798 .addDef(ResVReg)
6799 .addUse(GR.getSPIRVTypeID(ResType))
6800 .addImm(static_cast<uint32_t>(SPIRV::StorageClass::Function))
6801 .constrainAllUses(TII, TRI, RBI);
6802 if (!STI.isShader()) {
6803 unsigned Alignment = I.getOperand(2).getImm();
6804 buildOpDecorate(ResVReg, *It, TII, SPIRV::Decoration::Alignment,
6805 {Alignment});
6806 }
6807 return true;
6808}
6809
6810bool SPIRVInstructionSelector::selectBranch(MachineInstr &I) const {
6811 // InstructionSelector walks backwards through the instructions. We can use
6812 // both a G_BR and a G_BRCOND to create an OpBranchConditional. We hit G_BR
6813 // first, so can generate an OpBranchConditional here. If there is no
6814 // G_BRCOND, we just use OpBranch for a regular unconditional branch.
6815 const MachineInstr *PrevI = I.getPrevNode();
6816 MachineBasicBlock &MBB = *I.getParent();
6817 if (PrevI != nullptr && PrevI->getOpcode() == TargetOpcode::G_BRCOND) {
6818 BuildMI(MBB, I, I.getDebugLoc(), TII.get(SPIRV::OpBranchConditional))
6819 .addUse(PrevI->getOperand(0).getReg())
6820 .addMBB(PrevI->getOperand(1).getMBB())
6821 .addMBB(I.getOperand(0).getMBB())
6822 .constrainAllUses(TII, TRI, RBI);
6823 return true;
6824 }
6825 BuildMI(MBB, I, I.getDebugLoc(), TII.get(SPIRV::OpBranch))
6826 .addMBB(I.getOperand(0).getMBB())
6827 .constrainAllUses(TII, TRI, RBI);
6828 return true;
6829}
6830
6831bool SPIRVInstructionSelector::selectBranchCond(MachineInstr &I) const {
6832 // InstructionSelector walks backwards through the instructions. For an
6833 // explicit conditional branch with no fallthrough, we use both a G_BR and a
6834 // G_BRCOND to create an OpBranchConditional. We should hit G_BR first, and
6835 // generate the OpBranchConditional in selectBranch above.
6836 //
6837 // If an OpBranchConditional has been generated, we simply return, as the work
6838 // is alread done. If there is no OpBranchConditional, LLVM must be relying on
6839 // implicit fallthrough to the next basic block, so we need to create an
6840 // OpBranchConditional with an explicit "false" argument pointing to the next
6841 // basic block that LLVM would fall through to.
6842 const MachineInstr *NextI = I.getNextNode();
6843 // Check if this has already been successfully selected.
6844 if (NextI != nullptr && NextI->getOpcode() == SPIRV::OpBranchConditional)
6845 return true;
6846 // Must be relying on implicit block fallthrough, so generate an
6847 // OpBranchConditional with the "next" basic block as the "false" target.
6848 MachineBasicBlock &MBB = *I.getParent();
6849 unsigned NextMBBNum = MBB.getNextNode()->getNumber();
6850 MachineBasicBlock *NextMBB = I.getMF()->getBlockNumbered(NextMBBNum);
6851 BuildMI(MBB, I, I.getDebugLoc(), TII.get(SPIRV::OpBranchConditional))
6852 .addUse(I.getOperand(0).getReg())
6853 .addMBB(I.getOperand(1).getMBB())
6854 .addMBB(NextMBB)
6855 .constrainAllUses(TII, TRI, RBI);
6856 return true;
6857}
6858
6859bool SPIRVInstructionSelector::selectPhi(Register ResVReg,
6860 MachineInstr &I) const {
6861 auto MIB =
6862 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(TargetOpcode::PHI))
6863 .addDef(ResVReg);
6864 const unsigned NumOps = I.getNumOperands();
6865 for (unsigned i = 1; i < NumOps; i += 2) {
6866 MIB.addUse(I.getOperand(i + 0).getReg());
6867 MIB.addMBB(I.getOperand(i + 1).getMBB());
6868 }
6869 MIB.constrainAllUses(TII, TRI, RBI);
6870 return true;
6871}
6872
6873bool SPIRVInstructionSelector::selectGlobalValue(
6874 Register ResVReg, MachineInstr &I, const MachineInstr *Init) const {
6875 // FIXME: don't use MachineIRBuilder here, replace it with BuildMI.
6876 MachineIRBuilder MIRBuilder(I);
6877 const GlobalValue *GV = I.getOperand(1).getGlobal();
6878 Type *GVType = toTypedPointer(GR.getDeducedGlobalValueType(GV));
6879
6880 std::string GlobalIdent;
6881 if (!GV->hasName()) {
6882 unsigned &ID = UnnamedGlobalIDs[GV];
6883 if (ID == 0)
6884 ID = UnnamedGlobalIDs.size();
6885 GlobalIdent = "__unnamed_" + Twine(ID).str();
6886 } else {
6887 GlobalIdent = GV->getName();
6888 }
6889
6890 // Behaviour of functions as operands depends on availability of the
6891 // corresponding extension (SPV_INTEL_function_pointers):
6892 // - If there is an extension to operate with functions as operands:
6893 // We create a proper constant operand and evaluate a correct type for a
6894 // function pointer.
6895 // - Without the required extension:
6896 // We have functions as operands in tests with blocks of instruction e.g. in
6897 // transcoding/global_block.ll. These operands are not used and should be
6898 // substituted by zero constants. Their type is expected to be always
6899 // OpTypePointer Function %uchar.
6900 if (isa<Function>(GV)) {
6901 const Constant *ConstVal = GV;
6902 MachineBasicBlock &BB = *I.getParent();
6903 Register NewReg = GR.find(ConstVal, GR.CurMF);
6904 if (!NewReg.isValid()) {
6905 const Function *GVFun =
6906 STI.canUseExtension(SPIRV::Extension::SPV_INTEL_function_pointers)
6907 ? dyn_cast<Function>(GV)
6908 : nullptr;
6909 SPIRVTypeInst ResType = GR.getOrCreateSPIRVPointerType(
6910 GVType, I,
6911 GVFun ? SPIRV::StorageClass::CodeSectionINTEL
6912 : addressSpaceToStorageClass(GV->getAddressSpace(), STI));
6913 if (GVFun) {
6914 // References to a function via function pointers generate virtual
6915 // registers without a definition. We will resolve it later, during
6916 // module analysis stage.
6917 Register ResTypeReg = GR.getSPIRVTypeID(ResType);
6918 MachineRegisterInfo *MRI = MIRBuilder.getMRI();
6919 Register FuncVReg =
6920 MRI->createGenericVirtualRegister(GR.getRegType(ResType));
6921 MRI->setRegClass(FuncVReg, &SPIRV::pIDRegClass);
6922 GR.assignSPIRVTypeToVReg(ResType, FuncVReg, *GR.CurMF);
6923 MachineInstrBuilder MIB1 =
6924 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
6925 .addDef(FuncVReg)
6926 .addUse(ResTypeReg);
6927 MachineInstrBuilder MIB2 =
6928 BuildMI(BB, I, I.getDebugLoc(),
6929 TII.get(SPIRV::OpConstantFunctionPointerINTEL))
6930 .addDef(ResVReg)
6931 .addUse(ResTypeReg)
6932 .addUse(FuncVReg);
6933 GR.add(ConstVal, MIB2);
6934 // mapping the function pointer to the used Function
6935 GR.recordFunctionPointer(&MIB2.getInstr()->getOperand(2), GVFun);
6936 GR.assignSPIRVTypeToVReg(ResType, ResVReg, *GR.CurMF);
6937 MIB1.constrainAllUses(TII, TRI, RBI);
6938 MIB2.constrainAllUses(TII, TRI, RBI);
6939 return true;
6940 }
6941 MachineInstrBuilder MIB3 =
6942 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpUndef))
6943 .addDef(ResVReg)
6944 .addUse(GR.getSPIRVTypeID(ResType));
6945 GR.add(ConstVal, MIB3);
6946 GR.recordFunctionPointer(&MIB3.getInstr()->getOperand(0),
6947 cast<Function>(GV));
6948 MIB3.constrainAllUses(TII, TRI, RBI);
6949 return true;
6950 }
6951 assert(NewReg != ResVReg);
6952 return BuildCOPY(ResVReg, NewReg, I);
6953 }
6954 auto GlobalVar = cast<GlobalVariable>(GV);
6955 assert(GlobalVar->getName() != "llvm.global.annotations");
6956
6957 // Skip empty declaration for GVs with initializers till we get the decl with
6958 // passed initializer.
6959 if (hasInitializer(GlobalVar) && !Init)
6960 return true;
6961
6962 const std::optional<SPIRV::LinkageType::LinkageType> LnkType =
6963 getSpirvLinkageTypeFor(STI, *GV);
6964
6965 if (LnkType && *LnkType == SPIRV::LinkageType::Import)
6966 Init = nullptr;
6967
6968 const unsigned AddrSpace = GV->getAddressSpace();
6969 SPIRV::StorageClass::StorageClass StorageClass =
6970 addressSpaceToStorageClass(AddrSpace, STI);
6971 SPIRVTypeInst ResType =
6972 GR.getOrCreateSPIRVPointerType(GVType, I, StorageClass);
6973 Register Reg = GR.buildGlobalVariable(
6974 ResVReg, ResType, GlobalIdent, GV, StorageClass, Init,
6975 GlobalVar->isConstant(), LnkType, MIRBuilder, true);
6976 // TODO: For AMDGCN, we pipe externally_initialized through via
6977 // HostAccessINTEL, with ReadWrite (3) access, which is we then handle during
6978 // reverse translation. We should remove this once SPIR-V gains the ability to
6979 // express the concept.
6980 if (GlobalVar->isExternallyInitialized() &&
6981 STI.getTargetTriple().getVendor() == Triple::AMD) {
6982 constexpr unsigned ReadWriteINTEL = 3u;
6983 buildOpDecorate(Reg, MIRBuilder, SPIRV::Decoration::HostAccessINTEL,
6984 {ReadWriteINTEL});
6985 MachineInstrBuilder MIB(*MF, --MIRBuilder.getInsertPt());
6986 addStringImm(GV->getName(), MIB);
6987 }
6988 return Reg.isValid();
6989}
6990
6991bool SPIRVInstructionSelector::selectLog10(Register ResVReg,
6992 SPIRVTypeInst ResType,
6993 MachineInstr &I) const {
6994 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
6995 return selectExtInst(ResVReg, ResType, I, CL::log10);
6996 }
6997
6998 // There is no log10 instruction in the GLSL Extended Instruction set, so it
6999 // is implemented as:
7000 // log10(x) = log2(x) * (1 / log2(10))
7001 // = log2(x) * 0.30103
7002
7003 MachineIRBuilder MIRBuilder(I);
7004 MachineBasicBlock &BB = *I.getParent();
7005
7006 // Build log2(x).
7007 Register VarReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
7008 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
7009 .addDef(VarReg)
7010 .addUse(GR.getSPIRVTypeID(ResType))
7011 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::GLSL_std_450))
7012 .addImm(GL::Log2)
7013 .add(I.getOperand(1))
7014 .constrainAllUses(TII, TRI, RBI);
7015
7016 // Build 0.30103.
7017 assert(ResType->getOpcode() == SPIRV::OpTypeVector ||
7018 ResType->getOpcode() == SPIRV::OpTypeFloat);
7019 // TODO: Add matrix implementation once supported by the HLSL frontend.
7020 SPIRVTypeInst SpirvScalarType = GR.getScalarOrVectorComponentType(ResType);
7021 // The literal must match the precision of the scalar type, otherwise the
7022 // OpConstant will contain non-zero high-order bits and fail SPIR-V
7023 // validation when the type is narrower than 32 bits (e.g. half).
7024 APFloat ScaleVal(0.30103);
7025 bool LosesInfo;
7026 ScaleVal.convert(
7027 getZeroFP(GR.getTypeForSPIRVType(SpirvScalarType)).getSemantics(),
7028 APFloat::rmNearestTiesToEven, &LosesInfo);
7029 Register ScaleReg = GR.buildConstantFP(ScaleVal, MIRBuilder, SpirvScalarType);
7030
7031 // Multiply log2(x) by 0.30103 to get log10(x) result.
7032 auto Opcode = ResType->getOpcode() == SPIRV::OpTypeVector
7033 ? SPIRV::OpVectorTimesScalar
7034 : SPIRV::OpFMulS;
7035 BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
7036 .addDef(ResVReg)
7037 .addUse(GR.getSPIRVTypeID(ResType))
7038 .addUse(VarReg)
7039 .addUse(ScaleReg)
7040 .constrainAllUses(TII, TRI, RBI);
7041 return true;
7042}
7043
7044bool SPIRVInstructionSelector::selectFpowi(Register ResVReg,
7045 SPIRVTypeInst ResType,
7046 MachineInstr &I) const {
7047 // On OpenCL targets, pown(gentype x, intn n) maps directly.
7048 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std))
7049 return selectExtInst(ResVReg, ResType, I, CL::pown);
7050
7051 // On GLSL (Vulkan) targets, there is no integer-exponent power instruction.
7052 // Lower as: Pow(base, OpConvertSToF(exp)).
7053 if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
7054 Register BaseReg = I.getOperand(1).getReg();
7055 Register ExpReg = I.getOperand(2).getReg();
7056 Register FloatExpReg = MRI->createVirtualRegister(GR.getRegClass(ResType));
7057 if (!selectOpWithSrcs(FloatExpReg, ResType, I, {ExpReg},
7058 SPIRV::OpConvertSToF))
7059 return false;
7060 return selectExtInst(ResVReg, ResType, I, GL::Pow,
7061 /*setMIFlags=*/true, /*useMISrc=*/false,
7062 {BaseReg, FloatExpReg});
7063 }
7064 return false;
7065}
7066
7067bool SPIRVInstructionSelector::selectModf(Register ResVReg,
7068 SPIRVTypeInst ResType,
7069 MachineInstr &I) const {
7070 // llvm.modf has a single arg --the number to be decomposed-- and returns a
7071 // struct { restype, restype }, while OpenCLLIB::modf has two args --the
7072 // number to be decomposed and a pointer--, returns the fractional part and
7073 // the integral part is stored in the pointer argument. Therefore, we can't
7074 // use directly the OpenCLLIB::modf intrinsic. However, we can do some
7075 // scaffolding to make it work. The idea is to create an alloca instruction
7076 // to get a ptr, pass this ptr to OpenCL::modf, and then load the value
7077 // from this ptr to place it in the struct. llvm.modf returns the fractional
7078 // part as the first element of the result, and the integral part as the
7079 // second element of the result.
7080
7081 // At this point, the return type is not a struct anymore, but rather two
7082 // independent elements of SPIRVResType. We can get each independent element
7083 // from I.getDefs() or I.getOperands().
7084 if (STI.canUseExtInstSet(SPIRV::InstructionSet::OpenCL_std)) {
7085 MachineIRBuilder MIRBuilder(I);
7086 SPIRVTypeInst FloatType =
7087 GR.getSPIRVTypeForVReg(I.getOperand(I.getNumExplicitDefs()).getReg());
7088 // Get pointer type for alloca variable.
7089 const SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
7090 FloatType, MIRBuilder, SPIRV::StorageClass::Function);
7091 // Create new register for the pointer type of alloca variable.
7092 Register PtrTyReg =
7093 MIRBuilder.getMRI()->createVirtualRegister(&SPIRV::iIDRegClass);
7094 MIRBuilder.getMRI()->setType(
7095 PtrTyReg,
7096 LLT::pointer(storageClassToAddressSpace(SPIRV::StorageClass::Function),
7097 GR.getPointerSize()));
7098
7099 // Assign SPIR-V type of the pointer type of the alloca variable to the
7100 // new register.
7101 GR.assignSPIRVTypeToVReg(PtrType, PtrTyReg, MIRBuilder.getMF());
7102 MachineBasicBlock::iterator VarPos = getOpVariableMBBIt(*I.getMF());
7103 MachineBasicBlock &EntryBB = I.getMF()->front();
7104 auto AllocaMIB =
7105 BuildMI(EntryBB, VarPos, I.getDebugLoc(), TII.get(SPIRV::OpVariable))
7106 .addDef(PtrTyReg)
7107 .addUse(GR.getSPIRVTypeID(PtrType))
7108 .addImm(static_cast<uint32_t>(SPIRV::StorageClass::Function));
7109 Register Variable = AllocaMIB->getOperand(0).getReg();
7110
7111 MachineBasicBlock &BB = *I.getParent();
7112 // Create the OpenCLLIB::modf instruction.
7113 auto MIB =
7114 BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpExtInst))
7115 .addDef(ResVReg)
7116 .addUse(GR.getSPIRVTypeID(FloatType))
7117 .addImm(static_cast<uint32_t>(SPIRV::InstructionSet::OpenCL_std))
7118 .addImm(CL::modf)
7119 .setMIFlags(I.getFlags())
7120 .add(I.getOperand(I.getNumExplicitDefs())) // Floating point value.
7121 .addUse(Variable); // Pointer to integral part.
7122 // Assign the integral part stored in the ptr to the second element of the
7123 // result.
7124 Register IntegralPartReg = I.getOperand(1).getReg();
7125 if (IntegralPartReg.isValid() && !MRI->use_nodbg_empty(IntegralPartReg)) {
7126 // Load the value from the pointer to integral part.
7127 auto LoadMIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
7128 .addDef(IntegralPartReg)
7129 .addUse(GR.getSPIRVTypeID(FloatType))
7130 .addUse(Variable);
7131 LoadMIB.constrainAllUses(TII, TRI, RBI);
7132 }
7133
7134 MIB.constrainAllUses(TII, TRI, RBI);
7135 return true;
7136 } else if (STI.canUseExtInstSet(SPIRV::InstructionSet::GLSL_std_450)) {
7137 assert(false && "GLSL::Modf is deprecated.");
7138 // FIXME: GL::Modf is deprecated, use Modfstruct instead.
7139 return false;
7140 }
7141 return false;
7142}
7143
7144// Generate the instructions to load 3-element vector builtin input
7145// IDs/Indices.
7146// Like: GlobalInvocationId, LocalInvocationId, etc....
7147
7148bool SPIRVInstructionSelector::loadVec3BuiltinInputID(
7149 SPIRV::BuiltIn::BuiltIn BuiltInValue, Register ResVReg,
7150 SPIRVTypeInst ResType, MachineInstr &I) const {
7151 MachineIRBuilder MIRBuilder(I);
7152 const SPIRVTypeInst Vec3Ty =
7153 GR.getOrCreateSPIRVVectorType(ResType, 3, MIRBuilder, false);
7154 const SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
7155 Vec3Ty, MIRBuilder, SPIRV::StorageClass::Input);
7156
7157 // Create new register for the input ID builtin variable.
7158 Register NewRegister =
7159 MIRBuilder.getMRI()->createVirtualRegister(&SPIRV::iIDRegClass);
7160 MIRBuilder.getMRI()->setType(NewRegister, LLT::pointer(0, 64));
7161 GR.assignSPIRVTypeToVReg(PtrType, NewRegister, MIRBuilder.getMF());
7162
7163 // Build global variable with the necessary decorations for the input ID
7164 // builtin variable.
7165 Register Variable = GR.buildGlobalVariable(
7166 NewRegister, PtrType, getLinkStringForBuiltIn(BuiltInValue), nullptr,
7167 SPIRV::StorageClass::Input, nullptr, true, std::nullopt, MIRBuilder,
7168 false);
7169
7170 // Create new register for loading value.
7171 MachineRegisterInfo *MRI = MIRBuilder.getMRI();
7172 Register LoadedRegister = MRI->createVirtualRegister(&SPIRV::iIDRegClass);
7173 MIRBuilder.getMRI()->setType(LoadedRegister, LLT::pointer(0, 64));
7174 GR.assignSPIRVTypeToVReg(Vec3Ty, LoadedRegister, MIRBuilder.getMF());
7175
7176 // Load v3uint value from the global variable.
7177 BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
7178 .addDef(LoadedRegister)
7179 .addUse(GR.getSPIRVTypeID(Vec3Ty))
7180 .addUse(Variable);
7181
7182 // Get the input ID index. Expecting operand is a constant immediate value,
7183 // wrapped in a type assignment.
7184 assert(I.getOperand(2).isReg());
7185 const uint32_t ThreadId = foldImm(I.getOperand(2), MRI);
7186
7187 // Extract the input ID from the loaded vector value.
7188 MachineBasicBlock &BB = *I.getParent();
7189 auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpCompositeExtract))
7190 .addDef(ResVReg)
7191 .addUse(GR.getSPIRVTypeID(ResType))
7192 .addUse(LoadedRegister)
7193 .addImm(ThreadId);
7194 MIB.constrainAllUses(TII, TRI, RBI);
7195 return true;
7196}
7197
7198// Generate the instructions to load 32-bit integer builtin input IDs/Indices.
7199// Like LocalInvocationIndex
7200bool SPIRVInstructionSelector::loadBuiltinInputID(
7201 SPIRV::BuiltIn::BuiltIn BuiltInValue, Register ResVReg,
7202 SPIRVTypeInst ResType, MachineInstr &I) const {
7203 MachineIRBuilder MIRBuilder(I);
7204 const SPIRVTypeInst PtrType = GR.getOrCreateSPIRVPointerType(
7205 ResType, MIRBuilder, SPIRV::StorageClass::Input);
7206
7207 // Create new register for the input ID builtin variable.
7208 Register NewRegister =
7209 MIRBuilder.getMRI()->createVirtualRegister(GR.getRegClass(PtrType));
7210 MIRBuilder.getMRI()->setType(
7211 NewRegister,
7212 LLT::pointer(storageClassToAddressSpace(SPIRV::StorageClass::Input),
7213 GR.getPointerSize()));
7214 GR.assignSPIRVTypeToVReg(PtrType, NewRegister, MIRBuilder.getMF());
7215
7216 // Build global variable with the necessary decorations for the input ID
7217 // builtin variable.
7218 Register Variable = GR.buildGlobalVariable(
7219 NewRegister, PtrType, getLinkStringForBuiltIn(BuiltInValue), nullptr,
7220 SPIRV::StorageClass::Input, nullptr, true, std::nullopt, MIRBuilder,
7221 false);
7222
7223 // Load uint value from the global variable.
7224 auto MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(SPIRV::OpLoad))
7225 .addDef(ResVReg)
7226 .addUse(GR.getSPIRVTypeID(ResType))
7227 .addUse(Variable);
7228
7229 MIB.constrainAllUses(TII, TRI, RBI);
7230 return true;
7231}
7232
7233SPIRVTypeInst SPIRVInstructionSelector::widenTypeToVec4(SPIRVTypeInst Type,
7234 MachineInstr &I) const {
7235 MachineIRBuilder MIRBuilder(I);
7236 if (Type->getOpcode() != SPIRV::OpTypeVector)
7237 return GR.getOrCreateSPIRVVectorType(Type, 4, MIRBuilder, false);
7238
7239 if (GR.getScalarOrVectorComponentCount(Type) == 4)
7240 return Type;
7241
7242 SPIRVTypeInst ScalarType = GR.getScalarOrVectorComponentType(Type);
7243 return GR.getOrCreateSPIRVVectorType(ScalarType, 4, MIRBuilder, false);
7244}
7245
7246bool SPIRVInstructionSelector::loadHandleBeforePosition(
7247 Register &HandleReg, SPIRVTypeInst ResType, GIntrinsic &HandleDef,
7248 MachineInstr &Pos) const {
7249
7250 assert(HandleDef.getIntrinsicID() ==
7251 Intrinsic::spv_resource_handlefrombinding);
7252 uint32_t Set = foldImm(HandleDef.getOperand(2), MRI);
7253 uint32_t Binding = foldImm(HandleDef.getOperand(3), MRI);
7254 uint32_t ArraySize = foldImm(HandleDef.getOperand(4), MRI);
7255 Register IndexReg = HandleDef.getOperand(5).getReg();
7256 std::string Name =
7257 getStringValueFromReg(HandleDef.getOperand(6).getReg(), *MRI);
7258
7259 bool IsStructuredBuffer = ResType->getOpcode() == SPIRV::OpTypePointer;
7260 MachineIRBuilder MIRBuilder(HandleDef);
7261 SPIRVTypeInst VarType = ResType;
7262 SPIRV::StorageClass::StorageClass SC = SPIRV::StorageClass::UniformConstant;
7263
7264 if (IsStructuredBuffer) {
7265 VarType = GR.getPointeeType(ResType);
7266 SC = GR.getPointerStorageClass(ResType);
7267 }
7268
7269 if (ResType->getOpcode() == SPIRV::OpTypeImage && ArraySize == 0)
7270 MIRBuilder.buildInstr(SPIRV::OpCapability)
7271 .addImm(SPIRV::Capability::RuntimeDescriptorArrayEXT);
7272
7273 Register VarReg =
7274 buildPointerToResource(SPIRVTypeInst(VarType), SC, Set, Binding,
7275 ArraySize, IndexReg, Name, MIRBuilder);
7276
7277 // The handle for the buffer is the pointer to the resource. For an image, the
7278 // handle is the image object. So images get an extra load.
7279 uint32_t LoadOpcode =
7280 IsStructuredBuffer ? SPIRV::OpCopyObject : SPIRV::OpLoad;
7281 GR.assignSPIRVTypeToVReg(ResType, HandleReg, *Pos.getMF());
7282 BuildMI(*Pos.getParent(), Pos, HandleDef.getDebugLoc(), TII.get(LoadOpcode))
7283 .addDef(HandleReg)
7284 .addUse(GR.getSPIRVTypeID(ResType))
7285 .addUse(VarReg)
7286 .constrainAllUses(TII, TRI, RBI);
7287 return true;
7288}
7289
7290bool SPIRVInstructionSelector::errorIfInstrOutsideShader(
7291 MachineInstr &I) const {
7292 if (!STI.isShader())
7293 return diagnoseUnsupported(
7294 I, "this instruction is only supported in shaders.");
7295 return true;
7296}
7297
7298namespace llvm {
7299InstructionSelector *
7300createSPIRVInstructionSelector(const SPIRVTargetMachine &TM,
7301 const SPIRVSubtarget &Subtarget,
7302 const RegisterBankInfo &RBI) {
7303 return new SPIRVInstructionSelector(TM, Subtarget, RBI);
7304}
7305} // 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:2079
X
#define X(NUM, ENUM, NAME)
Definition ELF.h:856
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:6715
getOneFP
static APFloat getOneFP(const Type *LLVMFloatTy)
Definition SPIRVInstructionSelector.cpp:2990
isUSMStorageClass
static bool isUSMStorageClass(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVInstructionSelector.cpp:2668
isASCastInGVar
static bool isASCastInGVar(MachineRegisterInfo *MRI, Register ResVReg)
Definition SPIRVInstructionSelector.cpp:2679
mayApplyGenericSelection
static bool mayApplyGenericSelection(unsigned Opcode)
Definition SPIRVInstructionSelector.cpp:975
getZeroFP
static APFloat getZeroFP(const Type *LLVMFloatTy)
Definition SPIRVInstructionSelector.cpp:2976
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:2964
getICmpOpcode
static unsigned getICmpOpcode(unsigned PredNum)
Definition SPIRVInstructionSelector.cpp:2924
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:2952
isDead
bool isDead(const MachineInstr &MI, const MachineRegisterInfo &MRI)
Definition SPIRVInstructionSelector.cpp:789
SPIRV
spirv structurize SPIRV
Definition SPIRVStructurizer.cpp:1183
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:1552
llvm::APFloat::getOne
static APFloat getOne(const fltSemantics &Sem, bool Negative=false)
Factory for Positive and Negative One.
Definition APFloat.h:1153
llvm::APFloat::getZero
static APFloat getZero(const fltSemantics &Sem, bool Negative=false)
Factory for Positive and Negative Zero.
Definition APFloat.h:1144
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:367
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:353
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:211
llvm::GlobalValue::getParent
Module * getParent()
Get the module that this global value is contained inside of...
Definition GlobalValue.h:671
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:348
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:1480
llvm::SPIRVGlobalRegistry::getOrCreateOpTypeSampledImage
SPIRVTypeInst getOrCreateOpTypeSampledImage(SPIRVTypeInst ImageType, MachineIRBuilder &MIRBuilder)
Definition SPIRVGlobalRegistry.cpp:1728
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:2090
llvm::SPIRVGlobalRegistry::getOrAddMemAliasingINTELInst
MachineInstr * getOrAddMemAliasingINTELInst(MachineIRBuilder &MIRBuilder, const MDNode *AliasingListMD)
Definition SPIRVGlobalRegistry.cpp:2152
llvm::SPIRVGlobalRegistry::isAggregateType
bool isAggregateType(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.h:371
llvm::SPIRVGlobalRegistry::getScalarOrVectorBitWidth
unsigned getScalarOrVectorBitWidth(SPIRVTypeInst Type) const
Definition SPIRVGlobalRegistry.cpp:1451
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVIntegerType
SPIRVTypeInst getOrCreateSPIRVIntegerType(unsigned BitWidth, MachineIRBuilder &MIRBuilder)
Definition SPIRVGlobalRegistry.cpp:1858
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVVectorType
SPIRVTypeInst getOrCreateSPIRVVectorType(SPIRVTypeInst BaseType, unsigned NumElements, MachineIRBuilder &MIRBuilder, bool EmitIR)
Definition SPIRVGlobalRegistry.cpp:1957
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:1334
llvm::SPIRVGlobalRegistry::getScalarOrVectorComponentCount
unsigned getScalarOrVectorComponentCount(Register VReg) const
Definition SPIRVGlobalRegistry.cpp:1424
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:1496
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:2116
llvm::SPIRVGlobalRegistry::invalidateMachineInstr
void invalidateMachineInstr(MachineInstr *MI)
Definition SPIRVGlobalRegistry.cpp:233
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVBoolType
SPIRVTypeInst getOrCreateSPIRVBoolType(MachineIRBuilder &MIRBuilder, bool EmitIR)
Definition SPIRVGlobalRegistry.cpp:1932
llvm::SPIRVGlobalRegistry::getOrCreateSPIRVPointerType
SPIRVTypeInst getOrCreateSPIRVPointerType(const Type *BaseType, MachineIRBuilder &MIRBuilder, SPIRV::StorageClass::StorageClass SC)
Definition SPIRVGlobalRegistry.cpp:1998
llvm::SPIRVGlobalRegistry::isScalarOfType
bool isScalarOfType(Register VReg, unsigned TypeOpcode) const
Definition SPIRVGlobalRegistry.cpp:1389
llvm::SPIRVGlobalRegistry::getSPIRVTypeID
Register getSPIRVTypeID(SPIRVTypeInst SpirvType) const
Definition SPIRVGlobalRegistry.cpp:1161
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:1474
llvm::SPIRVGlobalRegistry::getOrCreateGlobalVariableWithBinding
Register getOrCreateGlobalVariableWithBinding(SPIRVTypeInst VarType, uint32_t Set, uint32_t Binding, StringRef Name, MachineIRBuilder &MIRBuilder)
Definition SPIRVGlobalRegistry.cpp:919
llvm::SPIRVGlobalRegistry::changePointerStorageClass
SPIRVTypeInst changePointerStorageClass(SPIRVTypeInst PtrType, SPIRV::StorageClass::StorageClass SC, MachineInstr &I)
Definition SPIRVGlobalRegistry.cpp:2009
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:1438
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:1911
llvm::SPIRVGlobalRegistry::getPointeeType
SPIRVTypeInst getPointeeType(SPIRVTypeInst PtrType)
Definition SPIRVGlobalRegistry.cpp:1485
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:1396
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:1323
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:2056
llvm::SPIRVGlobalRegistry::getPointerStorageClass
SPIRV::StorageClass::StorageClass getPointerStorageClass(Register VReg) const
Definition SPIRVGlobalRegistry.cpp:1516
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:401
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:386
llvm::SmallPtrSetImpl::contains
bool contains(ConstPtrType Ptr) const
Definition SmallPtrSet.h:466
llvm::SmallPtrSet
SmallPtrSet - This class implements a set which is optimized for holding SmallSize or less elements.
Definition SmallPtrSet.h:532
llvm::SmallVectorImpl::emplace_back
reference emplace_back(ArgTypes &&... Args)
Definition SmallVector.h:977
llvm::SmallVectorImpl::reserve
void reserve(size_type N)
Definition SmallVector.h:682
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:1236
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:477
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:35
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:241
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:573
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:1739
llvm::getOpVariableMBBIt
MachineBasicBlock::iterator getOpVariableMBBIt(MachineFunction &MF)
Definition SPIRVUtils.cpp:351
llvm::getIConstValSext
int64_t getIConstValSext(Register ConstReg, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:521
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:1154
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:1166
llvm::addNumImm
void addNumImm(const APInt &Imm, MachineInstrBuilder &MIB)
Definition SPIRVUtils.cpp:212
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:980
llvm::getArrayComponentCount
unsigned getArrayComponentCount(const MachineRegisterInfo *MRI, const MachineInstr *ResType)
Definition SPIRVUtils.cpp:1191
llvm::buildOpDecorate
void buildOpDecorate(Register Reg, MachineIRBuilder &MIRBuilder, SPIRV::Decoration::Decoration Dec, ArrayRef< uint32_t > DecArgs, StringRef StrImm)
Definition SPIRVUtils.cpp:268
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:515
llvm::createContinuedInstructions
SmallVector< MachineInstr *, 4 > createContinuedInstructions(MachineIRBuilder &MIRBuilder, unsigned Opcode, unsigned MinWC, unsigned ContinuedOpcode, ArrayRef< Register > Args, Register ReturnRegister, Register TypeID)
Definition SPIRVUtils.cpp:1045
llvm::getMemSemanticsForStorageClass
SPIRV::MemorySemantics::MemorySemantics getMemSemanticsForStorageClass(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVUtils.cpp:430
llvm::storageClassToAddressSpace
constexpr unsigned storageClassToAddressSpace(SPIRV::StorageClass::StorageClass SC)
Definition SPIRVUtils.h:247
llvm::Value
RelativeUniformCounterPtr ValuesPtrExpr VTableAddr Value
Definition InstrProf.h:143
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:1746
llvm::getImm
MachineInstr * getImm(const MachineOperand &MO, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1172
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:1162
llvm::passCopy
MachineInstr * passCopy(MachineInstr *Def, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1159
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:1266
llvm::errs
LLVM_ABI raw_fd_ostream & errs()
This returns a reference to a raw_ostream for standard error.
Definition raw_ostream.cpp:890
llvm::addressSpaceToStorageClass
SPIRV::StorageClass::StorageClass addressSpaceToStorageClass(unsigned AddrSpace, const SPIRVSubtarget &STI)
Definition SPIRVUtils.cpp:390
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:466
llvm::createSPIRVInstructionSelector
InstructionSelector * createSPIRVInstructionSelector(const SPIRVTargetMachine &TM, const SPIRVSubtarget &Subtarget, const RegisterBankInfo &RBI)
Definition SPIRVInstructionSelector.cpp:7300
llvm::getStringValueFromReg
std::string getStringValueFromReg(Register Reg, MachineRegisterInfo &MRI)
Definition SPIRVUtils.cpp:202
llvm::foldImm
int64_t foldImm(const MachineOperand &MO, const MachineRegisterInfo *MRI)
Definition SPIRVUtils.cpp:1181
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:492
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:527
llvm::addStringImm
void addStringImm(const StringRef &Str, MCInst &Inst)
Definition SPIRVUtils.cpp:173
llvm::getVRegDef
MachineInstr * getVRegDef(MachineRegisterInfo &MRI, Register Reg)
Definition SPIRVUtils.cpp:931
llvm::getMemSemantics
SPIRV::MemorySemantics::MemorySemantics getMemSemantics(AtomicOrdering Ord)
Definition SPIRVUtils.cpp:448
llvm::getLinkStringForBuiltIn
std::string getLinkStringForBuiltIn(SPIRV::BuiltIn::BuiltIn BuiltInValue)
Definition SPIRVBaseInfo.cpp:204
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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