LLVM  10.0.0svn
TargetTransformInfoImpl.h
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1 //===- TargetTransformInfoImpl.h --------------------------------*- 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 /// \file
9 /// This file provides helpers for the implementation of
10 /// a TargetTransformInfo-conforming class.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_ANALYSIS_TARGETTRANSFORMINFOIMPL_H
15 #define LLVM_ANALYSIS_TARGETTRANSFORMINFOIMPL_H
16 
20 #include "llvm/IR/CallSite.h"
21 #include "llvm/IR/DataLayout.h"
22 #include "llvm/IR/Function.h"
24 #include "llvm/IR/Operator.h"
25 #include "llvm/IR/Type.h"
26 
27 namespace llvm {
28 
29 /// Base class for use as a mix-in that aids implementing
30 /// a TargetTransformInfo-compatible class.
32 protected:
34 
35  const DataLayout &DL;
36 
37  explicit TargetTransformInfoImplBase(const DataLayout &DL) : DL(DL) {}
38 
39 public:
40  // Provide value semantics. MSVC requires that we spell all of these out.
42  : DL(Arg.DL) {}
44 
45  const DataLayout &getDataLayout() const { return DL; }
46 
47  unsigned getOperationCost(unsigned Opcode, Type *Ty, Type *OpTy) {
48  switch (Opcode) {
49  default:
50  // By default, just classify everything as 'basic'.
51  return TTI::TCC_Basic;
52 
53  case Instruction::GetElementPtr:
54  llvm_unreachable("Use getGEPCost for GEP operations!");
55 
56  case Instruction::BitCast:
57  assert(OpTy && "Cast instructions must provide the operand type");
58  if (Ty == OpTy || (Ty->isPointerTy() && OpTy->isPointerTy()))
59  // Identity and pointer-to-pointer casts are free.
60  return TTI::TCC_Free;
61 
62  // Otherwise, the default basic cost is used.
63  return TTI::TCC_Basic;
64 
65  case Instruction::FDiv:
66  case Instruction::FRem:
67  case Instruction::SDiv:
68  case Instruction::SRem:
69  case Instruction::UDiv:
70  case Instruction::URem:
71  return TTI::TCC_Expensive;
72 
73  case Instruction::IntToPtr: {
74  // An inttoptr cast is free so long as the input is a legal integer type
75  // which doesn't contain values outside the range of a pointer.
76  unsigned OpSize = OpTy->getScalarSizeInBits();
77  if (DL.isLegalInteger(OpSize) &&
78  OpSize <= DL.getPointerTypeSizeInBits(Ty))
79  return TTI::TCC_Free;
80 
81  // Otherwise it's not a no-op.
82  return TTI::TCC_Basic;
83  }
84  case Instruction::PtrToInt: {
85  // A ptrtoint cast is free so long as the result is large enough to store
86  // the pointer, and a legal integer type.
87  unsigned DestSize = Ty->getScalarSizeInBits();
88  if (DL.isLegalInteger(DestSize) &&
89  DestSize >= DL.getPointerTypeSizeInBits(OpTy))
90  return TTI::TCC_Free;
91 
92  // Otherwise it's not a no-op.
93  return TTI::TCC_Basic;
94  }
95  case Instruction::Trunc:
96  // trunc to a native type is free (assuming the target has compare and
97  // shift-right of the same width).
98  if (DL.isLegalInteger(DL.getTypeSizeInBits(Ty)))
99  return TTI::TCC_Free;
100 
101  return TTI::TCC_Basic;
102  }
103  }
104 
105  int getGEPCost(Type *PointeeType, const Value *Ptr,
106  ArrayRef<const Value *> Operands) {
107  // In the basic model, we just assume that all-constant GEPs will be folded
108  // into their uses via addressing modes.
109  for (unsigned Idx = 0, Size = Operands.size(); Idx != Size; ++Idx)
110  if (!isa<Constant>(Operands[Idx]))
111  return TTI::TCC_Basic;
112 
113  return TTI::TCC_Free;
114  }
115 
117  unsigned &JTSize) {
118  JTSize = 0;
119  return SI.getNumCases();
120  }
121 
122  int getExtCost(const Instruction *I, const Value *Src) {
123  return TTI::TCC_Basic;
124  }
125 
126  unsigned getCallCost(FunctionType *FTy, int NumArgs, const User *U) {
127  assert(FTy && "FunctionType must be provided to this routine.");
128 
129  // The target-independent implementation just measures the size of the
130  // function by approximating that each argument will take on average one
131  // instruction to prepare.
132 
133  if (NumArgs < 0)
134  // Set the argument number to the number of explicit arguments in the
135  // function.
136  NumArgs = FTy->getNumParams();
137 
138  return TTI::TCC_Basic * (NumArgs + 1);
139  }
140 
141  unsigned getInliningThresholdMultiplier() { return 1; }
142 
143  int getInlinerVectorBonusPercent() { return 150; }
144 
145  unsigned getMemcpyCost(const Instruction *I) {
146  return TTI::TCC_Expensive;
147  }
148 
149  bool hasBranchDivergence() { return false; }
150 
151  bool isSourceOfDivergence(const Value *V) { return false; }
152 
153  bool isAlwaysUniform(const Value *V) { return false; }
154 
155  unsigned getFlatAddressSpace () {
156  return -1;
157  }
158 
160  Intrinsic::ID IID) const {
161  return false;
162  }
163 
165  Value *OldV, Value *NewV) const {
166  return false;
167  }
168 
169  bool isLoweredToCall(const Function *F) {
170  assert(F && "A concrete function must be provided to this routine.");
171 
172  // FIXME: These should almost certainly not be handled here, and instead
173  // handled with the help of TLI or the target itself. This was largely
174  // ported from existing analysis heuristics here so that such refactorings
175  // can take place in the future.
176 
177  if (F->isIntrinsic())
178  return false;
179 
180  if (F->hasLocalLinkage() || !F->hasName())
181  return true;
182 
183  StringRef Name = F->getName();
184 
185  // These will all likely lower to a single selection DAG node.
186  if (Name == "copysign" || Name == "copysignf" || Name == "copysignl" ||
187  Name == "fabs" || Name == "fabsf" || Name == "fabsl" || Name == "sin" ||
188  Name == "fmin" || Name == "fminf" || Name == "fminl" ||
189  Name == "fmax" || Name == "fmaxf" || Name == "fmaxl" ||
190  Name == "sinf" || Name == "sinl" || Name == "cos" || Name == "cosf" ||
191  Name == "cosl" || Name == "sqrt" || Name == "sqrtf" || Name == "sqrtl")
192  return false;
193 
194  // These are all likely to be optimized into something smaller.
195  if (Name == "pow" || Name == "powf" || Name == "powl" || Name == "exp2" ||
196  Name == "exp2l" || Name == "exp2f" || Name == "floor" ||
197  Name == "floorf" || Name == "ceil" || Name == "round" ||
198  Name == "ffs" || Name == "ffsl" || Name == "abs" || Name == "labs" ||
199  Name == "llabs")
200  return false;
201 
202  return true;
203  }
204 
206  AssumptionCache &AC,
207  TargetLibraryInfo *LibInfo,
208  HardwareLoopInfo &HWLoopInfo) {
209  return false;
210  }
211 
214 
215  bool isLegalAddImmediate(int64_t Imm) { return false; }
216 
217  bool isLegalICmpImmediate(int64_t Imm) { return false; }
218 
219  bool isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV, int64_t BaseOffset,
220  bool HasBaseReg, int64_t Scale,
221  unsigned AddrSpace, Instruction *I = nullptr) {
222  // Guess that only reg and reg+reg addressing is allowed. This heuristic is
223  // taken from the implementation of LSR.
224  return !BaseGV && BaseOffset == 0 && (Scale == 0 || Scale == 1);
225  }
226 
228  return std::tie(C1.NumRegs, C1.AddRecCost, C1.NumIVMuls, C1.NumBaseAdds,
229  C1.ScaleCost, C1.ImmCost, C1.SetupCost) <
230  std::tie(C2.NumRegs, C2.AddRecCost, C2.NumIVMuls, C2.NumBaseAdds,
231  C2.ScaleCost, C2.ImmCost, C2.SetupCost);
232  }
233 
234  bool canMacroFuseCmp() { return false; }
235 
238  TargetLibraryInfo *LibInfo) {
239  return false;
240  }
241 
242  bool shouldFavorPostInc() const { return false; }
243 
244  bool shouldFavorBackedgeIndex(const Loop *L) const { return false; }
245 
246  bool isLegalMaskedStore(Type *DataType) { return false; }
247 
248  bool isLegalMaskedLoad(Type *DataType) { return false; }
249 
250  bool isLegalNTStore(Type *DataType, unsigned Alignment) {
251  // By default, assume nontemporal memory stores are available for stores
252  // that are aligned and have a size that is a power of 2.
253  unsigned DataSize = DL.getTypeStoreSize(DataType);
254  return Alignment >= DataSize && isPowerOf2_32(DataSize);
255  }
256 
257  bool isLegalNTLoad(Type *DataType, unsigned Alignment) {
258  // By default, assume nontemporal memory loads are available for loads that
259  // are aligned and have a size that is a power of 2.
260  unsigned DataSize = DL.getTypeStoreSize(DataType);
261  return Alignment >= DataSize && isPowerOf2_32(DataSize);
262  }
263 
264  bool isLegalMaskedScatter(Type *DataType) { return false; }
265 
266  bool isLegalMaskedGather(Type *DataType) { return false; }
267 
268  bool isLegalMaskedCompressStore(Type *DataType) { return false; }
269 
270  bool isLegalMaskedExpandLoad(Type *DataType) { return false; }
271 
272  bool hasDivRemOp(Type *DataType, bool IsSigned) { return false; }
273 
274  bool hasVolatileVariant(Instruction *I, unsigned AddrSpace) { return false; }
275 
276  bool prefersVectorizedAddressing() { return true; }
277 
278  int getScalingFactorCost(Type *Ty, GlobalValue *BaseGV, int64_t BaseOffset,
279  bool HasBaseReg, int64_t Scale, unsigned AddrSpace) {
280  // Guess that all legal addressing mode are free.
281  if (isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
282  Scale, AddrSpace))
283  return 0;
284  return -1;
285  }
286 
287  bool LSRWithInstrQueries() { return false; }
288 
289  bool isTruncateFree(Type *Ty1, Type *Ty2) { return false; }
290 
291  bool isProfitableToHoist(Instruction *I) { return true; }
292 
293  bool useAA() { return false; }
294 
295  bool isTypeLegal(Type *Ty) { return false; }
296 
297  unsigned getJumpBufAlignment() { return 0; }
298 
299  unsigned getJumpBufSize() { return 0; }
300 
301  bool shouldBuildLookupTables() { return true; }
303 
304  bool useColdCCForColdCall(Function &F) { return false; }
305 
306  unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) {
307  return 0;
308  }
309 
311  unsigned VF) { return 0; }
312 
314 
315  bool enableAggressiveInterleaving(bool LoopHasReductions) { return false; }
316 
318  bool IsZeroCmp) const {
319  return {};
320  }
321 
322  bool enableInterleavedAccessVectorization() { return false; }
323 
325 
326  bool isFPVectorizationPotentiallyUnsafe() { return false; }
327 
329  unsigned BitWidth,
330  unsigned AddressSpace,
331  unsigned Alignment,
332  bool *Fast) { return false; }
333 
334  TTI::PopcntSupportKind getPopcntSupport(unsigned IntTyWidthInBit) {
335  return TTI::PSK_Software;
336  }
337 
338  bool haveFastSqrt(Type *Ty) { return false; }
339 
340  bool isFCmpOrdCheaperThanFCmpZero(Type *Ty) { return true; }
341 
343 
344  int getIntImmCodeSizeCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
345  Type *Ty) {
346  return 0;
347  }
348 
349  unsigned getIntImmCost(const APInt &Imm, Type *Ty) { return TTI::TCC_Basic; }
350 
351  unsigned getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
352  Type *Ty) {
353  return TTI::TCC_Free;
354  }
355 
356  unsigned getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
357  Type *Ty) {
358  return TTI::TCC_Free;
359  }
360 
361  unsigned getNumberOfRegisters(bool Vector) { return 8; }
362 
363  unsigned getRegisterBitWidth(bool Vector) const { return 32; }
364 
365  unsigned getMinVectorRegisterBitWidth() { return 128; }
366 
367  bool shouldMaximizeVectorBandwidth(bool OptSize) const { return false; }
368 
369  unsigned getMinimumVF(unsigned ElemWidth) const { return 0; }
370 
371  bool
373  bool &AllowPromotionWithoutCommonHeader) {
374  AllowPromotionWithoutCommonHeader = false;
375  return false;
376  }
377 
378  unsigned getCacheLineSize() { return 0; }
379 
381  switch (Level) {
385  return llvm::Optional<unsigned>();
386  }
387 
388  llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
389  }
390 
393  switch (Level) {
397  return llvm::Optional<unsigned>();
398  }
399 
400  llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
401  }
402 
403  unsigned getPrefetchDistance() { return 0; }
404 
405  unsigned getMinPrefetchStride() { return 1; }
406 
407  unsigned getMaxPrefetchIterationsAhead() { return UINT_MAX; }
408 
409  unsigned getMaxInterleaveFactor(unsigned VF) { return 1; }
410 
411  unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty,
412  TTI::OperandValueKind Opd1Info,
413  TTI::OperandValueKind Opd2Info,
414  TTI::OperandValueProperties Opd1PropInfo,
415  TTI::OperandValueProperties Opd2PropInfo,
417  return 1;
418  }
419 
421  Type *SubTp) {
422  return 1;
423  }
424 
425  unsigned getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
426  const Instruction *I) { return 1; }
427 
428  unsigned getExtractWithExtendCost(unsigned Opcode, Type *Dst,
429  VectorType *VecTy, unsigned Index) {
430  return 1;
431  }
432 
433  unsigned getCFInstrCost(unsigned Opcode) { return 1; }
434 
435  unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
436  const Instruction *I) {
437  return 1;
438  }
439 
440  unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index) {
441  return 1;
442  }
443 
444  unsigned getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
445  unsigned AddressSpace, const Instruction *I) {
446  return 1;
447  }
448 
449  unsigned getMaskedMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
450  unsigned AddressSpace) {
451  return 1;
452  }
453 
454  unsigned getGatherScatterOpCost(unsigned Opcode, Type *DataTy, Value *Ptr,
455  bool VariableMask,
456  unsigned Alignment) {
457  return 1;
458  }
459 
460  unsigned getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy,
461  unsigned Factor,
462  ArrayRef<unsigned> Indices,
463  unsigned Alignment, unsigned AddressSpace,
464  bool UseMaskForCond = false,
465  bool UseMaskForGaps = false) {
466  return 1;
467  }
468 
471  unsigned ScalarizationCostPassed) {
472  return 1;
473  }
475  ArrayRef<Value *> Args, FastMathFlags FMF, unsigned VF) {
476  return 1;
477  }
478 
479  unsigned getCallInstrCost(Function *F, Type *RetTy, ArrayRef<Type *> Tys) {
480  return 1;
481  }
482 
483  unsigned getNumberOfParts(Type *Tp) { return 0; }
484 
486  const SCEV *) {
487  return 0;
488  }
489 
490  unsigned getArithmeticReductionCost(unsigned, Type *, bool) { return 1; }
491 
492  unsigned getMinMaxReductionCost(Type *, Type *, bool, bool) { return 1; }
493 
494  unsigned getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) { return 0; }
495 
497  return false;
498  }
499 
501  // Note for overrides: You must ensure for all element unordered-atomic
502  // memory intrinsics that all power-of-2 element sizes up to, and
503  // including, the return value of this method have a corresponding
504  // runtime lib call. These runtime lib call definitions can be found
505  // in RuntimeLibcalls.h
506  return 0;
507  }
508 
510  Type *ExpectedType) {
511  return nullptr;
512  }
513 
515  unsigned SrcAlign, unsigned DestAlign) const {
516  return Type::getInt8Ty(Context);
517  }
518 
521  unsigned RemainingBytes,
522  unsigned SrcAlign,
523  unsigned DestAlign) const {
524  for (unsigned i = 0; i != RemainingBytes; ++i)
525  OpsOut.push_back(Type::getInt8Ty(Context));
526  }
527 
528  bool areInlineCompatible(const Function *Caller,
529  const Function *Callee) const {
530  return (Caller->getFnAttribute("target-cpu") ==
531  Callee->getFnAttribute("target-cpu")) &&
532  (Caller->getFnAttribute("target-features") ==
533  Callee->getFnAttribute("target-features"));
534  }
535 
536  bool areFunctionArgsABICompatible(const Function *Caller, const Function *Callee,
538  return (Caller->getFnAttribute("target-cpu") ==
539  Callee->getFnAttribute("target-cpu")) &&
540  (Caller->getFnAttribute("target-features") ==
541  Callee->getFnAttribute("target-features"));
542  }
543 
545  const DataLayout &DL) const {
546  return false;
547  }
548 
550  const DataLayout &DL) const {
551  return false;
552  }
553 
554  unsigned getLoadStoreVecRegBitWidth(unsigned AddrSpace) const { return 128; }
555 
556  bool isLegalToVectorizeLoad(LoadInst *LI) const { return true; }
557 
558  bool isLegalToVectorizeStore(StoreInst *SI) const { return true; }
559 
560  bool isLegalToVectorizeLoadChain(unsigned ChainSizeInBytes,
561  unsigned Alignment,
562  unsigned AddrSpace) const {
563  return true;
564  }
565 
566  bool isLegalToVectorizeStoreChain(unsigned ChainSizeInBytes,
567  unsigned Alignment,
568  unsigned AddrSpace) const {
569  return true;
570  }
571 
572  unsigned getLoadVectorFactor(unsigned VF, unsigned LoadSize,
573  unsigned ChainSizeInBytes,
574  VectorType *VecTy) const {
575  return VF;
576  }
577 
578  unsigned getStoreVectorFactor(unsigned VF, unsigned StoreSize,
579  unsigned ChainSizeInBytes,
580  VectorType *VecTy) const {
581  return VF;
582  }
583 
584  bool useReductionIntrinsic(unsigned Opcode, Type *Ty,
585  TTI::ReductionFlags Flags) const {
586  return false;
587  }
588 
589  bool shouldExpandReduction(const IntrinsicInst *II) const {
590  return true;
591  }
592 
593  unsigned getGISelRematGlobalCost() const {
594  return 1;
595  }
596 
597 protected:
598  // Obtain the minimum required size to hold the value (without the sign)
599  // In case of a vector it returns the min required size for one element.
600  unsigned minRequiredElementSize(const Value* Val, bool &isSigned) {
601  if (isa<ConstantDataVector>(Val) || isa<ConstantVector>(Val)) {
602  const auto* VectorValue = cast<Constant>(Val);
603 
604  // In case of a vector need to pick the max between the min
605  // required size for each element
606  auto *VT = cast<VectorType>(Val->getType());
607 
608  // Assume unsigned elements
609  isSigned = false;
610 
611  // The max required size is the total vector width divided by num
612  // of elements in the vector
613  unsigned MaxRequiredSize = VT->getBitWidth() / VT->getNumElements();
614 
615  unsigned MinRequiredSize = 0;
616  for(unsigned i = 0, e = VT->getNumElements(); i < e; ++i) {
617  if (auto* IntElement =
618  dyn_cast<ConstantInt>(VectorValue->getAggregateElement(i))) {
619  bool signedElement = IntElement->getValue().isNegative();
620  // Get the element min required size.
621  unsigned ElementMinRequiredSize =
622  IntElement->getValue().getMinSignedBits() - 1;
623  // In case one element is signed then all the vector is signed.
624  isSigned |= signedElement;
625  // Save the max required bit size between all the elements.
626  MinRequiredSize = std::max(MinRequiredSize, ElementMinRequiredSize);
627  }
628  else {
629  // not an int constant element
630  return MaxRequiredSize;
631  }
632  }
633  return MinRequiredSize;
634  }
635 
636  if (const auto* CI = dyn_cast<ConstantInt>(Val)) {
637  isSigned = CI->getValue().isNegative();
638  return CI->getValue().getMinSignedBits() - 1;
639  }
640 
641  if (const auto* Cast = dyn_cast<SExtInst>(Val)) {
642  isSigned = true;
643  return Cast->getSrcTy()->getScalarSizeInBits() - 1;
644  }
645 
646  if (const auto* Cast = dyn_cast<ZExtInst>(Val)) {
647  isSigned = false;
648  return Cast->getSrcTy()->getScalarSizeInBits();
649  }
650 
651  isSigned = false;
652  return Val->getType()->getScalarSizeInBits();
653  }
654 
655  bool isStridedAccess(const SCEV *Ptr) {
656  return Ptr && isa<SCEVAddRecExpr>(Ptr);
657  }
658 
660  const SCEV *Ptr) {
661  if (!isStridedAccess(Ptr))
662  return nullptr;
663  const SCEVAddRecExpr *AddRec = cast<SCEVAddRecExpr>(Ptr);
664  return dyn_cast<SCEVConstant>(AddRec->getStepRecurrence(*SE));
665  }
666 
668  int64_t MergeDistance) {
669  const SCEVConstant *Step = getConstantStrideStep(SE, Ptr);
670  if (!Step)
671  return false;
672  APInt StrideVal = Step->getAPInt();
673  if (StrideVal.getBitWidth() > 64)
674  return false;
675  // FIXME: Need to take absolute value for negative stride case.
676  return StrideVal.getSExtValue() < MergeDistance;
677  }
678 };
679 
680 /// CRTP base class for use as a mix-in that aids implementing
681 /// a TargetTransformInfo-compatible class.
682 template <typename T>
684 private:
686 
687 protected:
688  explicit TargetTransformInfoImplCRTPBase(const DataLayout &DL) : BaseT(DL) {}
689 
690 public:
691  using BaseT::getCallCost;
692 
693  unsigned getCallCost(const Function *F, int NumArgs, const User *U) {
694  assert(F && "A concrete function must be provided to this routine.");
695 
696  if (NumArgs < 0)
697  // Set the argument number to the number of explicit arguments in the
698  // function.
699  NumArgs = F->arg_size();
700 
701  if (Intrinsic::ID IID = F->getIntrinsicID()) {
702  FunctionType *FTy = F->getFunctionType();
703  SmallVector<Type *, 8> ParamTys(FTy->param_begin(), FTy->param_end());
704  return static_cast<T *>(this)
705  ->getIntrinsicCost(IID, FTy->getReturnType(), ParamTys, U);
706  }
707 
708  if (!static_cast<T *>(this)->isLoweredToCall(F))
709  return TTI::TCC_Basic; // Give a basic cost if it will be lowered
710  // directly.
711 
712  return static_cast<T *>(this)->getCallCost(F->getFunctionType(), NumArgs, U);
713  }
714 
716  const User *U) {
717  // Simply delegate to generic handling of the call.
718  // FIXME: We should use instsimplify or something else to catch calls which
719  // will constant fold with these arguments.
720  return static_cast<T *>(this)->getCallCost(F, Arguments.size(), U);
721  }
722 
723  using BaseT::getGEPCost;
724 
725  int getGEPCost(Type *PointeeType, const Value *Ptr,
726  ArrayRef<const Value *> Operands) {
727  assert(PointeeType && Ptr && "can't get GEPCost of nullptr");
728  // TODO: will remove this when pointers have an opaque type.
730  PointeeType &&
731  "explicit pointee type doesn't match operand's pointee type");
732  auto *BaseGV = dyn_cast<GlobalValue>(Ptr->stripPointerCasts());
733  bool HasBaseReg = (BaseGV == nullptr);
734 
735  auto PtrSizeBits = DL.getPointerTypeSizeInBits(Ptr->getType());
736  APInt BaseOffset(PtrSizeBits, 0);
737  int64_t Scale = 0;
738 
739  auto GTI = gep_type_begin(PointeeType, Operands);
740  Type *TargetType = nullptr;
741 
742  // Handle the case where the GEP instruction has a single operand,
743  // the basis, therefore TargetType is a nullptr.
744  if (Operands.empty())
745  return !BaseGV ? TTI::TCC_Free : TTI::TCC_Basic;
746 
747  for (auto I = Operands.begin(); I != Operands.end(); ++I, ++GTI) {
748  TargetType = GTI.getIndexedType();
749  // We assume that the cost of Scalar GEP with constant index and the
750  // cost of Vector GEP with splat constant index are the same.
751  const ConstantInt *ConstIdx = dyn_cast<ConstantInt>(*I);
752  if (!ConstIdx)
753  if (auto Splat = getSplatValue(*I))
754  ConstIdx = dyn_cast<ConstantInt>(Splat);
755  if (StructType *STy = GTI.getStructTypeOrNull()) {
756  // For structures the index is always splat or scalar constant
757  assert(ConstIdx && "Unexpected GEP index");
758  uint64_t Field = ConstIdx->getZExtValue();
759  BaseOffset += DL.getStructLayout(STy)->getElementOffset(Field);
760  } else {
761  int64_t ElementSize = DL.getTypeAllocSize(GTI.getIndexedType());
762  if (ConstIdx) {
763  BaseOffset +=
764  ConstIdx->getValue().sextOrTrunc(PtrSizeBits) * ElementSize;
765  } else {
766  // Needs scale register.
767  if (Scale != 0)
768  // No addressing mode takes two scale registers.
769  return TTI::TCC_Basic;
770  Scale = ElementSize;
771  }
772  }
773  }
774 
775  if (static_cast<T *>(this)->isLegalAddressingMode(
776  TargetType, const_cast<GlobalValue *>(BaseGV),
777  BaseOffset.sextOrTrunc(64).getSExtValue(), HasBaseReg, Scale,
778  Ptr->getType()->getPointerAddressSpace()))
779  return TTI::TCC_Free;
780  return TTI::TCC_Basic;
781  }
782 
783  unsigned getIntrinsicCost(Intrinsic::ID IID, Type *RetTy,
784  ArrayRef<Type *> ParamTys, const User *U) {
785  switch (IID) {
786  default:
787  // Intrinsics rarely (if ever) have normal argument setup constraints.
788  // Model them as having a basic instruction cost.
789  return TTI::TCC_Basic;
790 
791  // TODO: other libc intrinsics.
792  case Intrinsic::memcpy:
793  return static_cast<T *>(this)->getMemcpyCost(dyn_cast<Instruction>(U));
794 
795  case Intrinsic::annotation:
796  case Intrinsic::assume:
797  case Intrinsic::sideeffect:
798  case Intrinsic::dbg_declare:
799  case Intrinsic::dbg_value:
800  case Intrinsic::dbg_label:
801  case Intrinsic::invariant_start:
802  case Intrinsic::invariant_end:
803  case Intrinsic::launder_invariant_group:
804  case Intrinsic::strip_invariant_group:
805  case Intrinsic::is_constant:
806  case Intrinsic::lifetime_start:
807  case Intrinsic::lifetime_end:
808  case Intrinsic::objectsize:
809  case Intrinsic::ptr_annotation:
810  case Intrinsic::var_annotation:
811  case Intrinsic::experimental_gc_result:
812  case Intrinsic::experimental_gc_relocate:
813  case Intrinsic::coro_alloc:
814  case Intrinsic::coro_begin:
815  case Intrinsic::coro_free:
816  case Intrinsic::coro_end:
817  case Intrinsic::coro_frame:
818  case Intrinsic::coro_size:
819  case Intrinsic::coro_suspend:
820  case Intrinsic::coro_param:
821  case Intrinsic::coro_subfn_addr:
822  // These intrinsics don't actually represent code after lowering.
823  return TTI::TCC_Free;
824  }
825  }
826 
827  unsigned getIntrinsicCost(Intrinsic::ID IID, Type *RetTy,
829  // Delegate to the generic intrinsic handling code. This mostly provides an
830  // opportunity for targets to (for example) special case the cost of
831  // certain intrinsics based on constants used as arguments.
832  SmallVector<Type *, 8> ParamTys;
833  ParamTys.reserve(Arguments.size());
834  for (unsigned Idx = 0, Size = Arguments.size(); Idx != Size; ++Idx)
835  ParamTys.push_back(Arguments[Idx]->getType());
836  return static_cast<T *>(this)->getIntrinsicCost(IID, RetTy, ParamTys, U);
837  }
838 
839  unsigned getUserCost(const User *U, ArrayRef<const Value *> Operands) {
840  if (isa<PHINode>(U))
841  return TTI::TCC_Free; // Model all PHI nodes as free.
842 
843  // Static alloca doesn't generate target instructions.
844  if (auto *A = dyn_cast<AllocaInst>(U))
845  if (A->isStaticAlloca())
846  return TTI::TCC_Free;
847 
848  if (const GEPOperator *GEP = dyn_cast<GEPOperator>(U)) {
849  return static_cast<T *>(this)->getGEPCost(GEP->getSourceElementType(),
850  GEP->getPointerOperand(),
851  Operands.drop_front());
852  }
853 
854  if (auto CS = ImmutableCallSite(U)) {
855  const Function *F = CS.getCalledFunction();
856  if (!F) {
857  // Just use the called value type.
858  Type *FTy = CS.getCalledValue()->getType()->getPointerElementType();
859  return static_cast<T *>(this)
860  ->getCallCost(cast<FunctionType>(FTy), CS.arg_size(), U);
861  }
862 
863  SmallVector<const Value *, 8> Arguments(CS.arg_begin(), CS.arg_end());
864  return static_cast<T *>(this)->getCallCost(F, Arguments, U);
865  }
866 
867  if (isa<SExtInst>(U) || isa<ZExtInst>(U) || isa<FPExtInst>(U))
868  // The old behaviour of generally treating extensions of icmp to be free
869  // has been removed. A target that needs it should override getUserCost().
870  return static_cast<T *>(this)->getExtCost(cast<Instruction>(U),
871  Operands.back());
872 
873  return static_cast<T *>(this)->getOperationCost(
874  Operator::getOpcode(U), U->getType(),
875  U->getNumOperands() == 1 ? U->getOperand(0)->getType() : nullptr);
876  }
877 
880  I->value_op_end());
881  if (getUserCost(I, Operands) == TTI::TCC_Free)
882  return 0;
883 
884  if (isa<LoadInst>(I))
885  return 4;
886 
887  Type *DstTy = I->getType();
888 
889  // Usually an intrinsic is a simple instruction.
890  // A real function call is much slower.
891  if (auto *CI = dyn_cast<CallInst>(I)) {
892  const Function *F = CI->getCalledFunction();
893  if (!F || static_cast<T *>(this)->isLoweredToCall(F))
894  return 40;
895  // Some intrinsics return a value and a flag, we use the value type
896  // to decide its latency.
897  if (StructType* StructTy = dyn_cast<StructType>(DstTy))
898  DstTy = StructTy->getElementType(0);
899  // Fall through to simple instructions.
900  }
901 
902  if (VectorType *VectorTy = dyn_cast<VectorType>(DstTy))
903  DstTy = VectorTy->getElementType();
904  if (DstTy->isFloatingPointTy())
905  return 3;
906 
907  return 1;
908  }
909 };
910 }
911 
912 #endif
uint64_t CallInst * C
unsigned getNumCases() const
Return the number of &#39;cases&#39; in this switch instruction, excluding the default case.
bool isIntrinsic() const
isIntrinsic - Returns true if the function&#39;s name starts with "llvm.".
Definition: Function.h:198
Base class for use as a mix-in that aids implementing a TargetTransformInfo-compatible class...
A parsed version of the target data layout string in and methods for querying it. ...
Definition: DataLayout.h:111
bool areFunctionArgsABICompatible(const Function *Caller, const Function *Callee, SmallPtrSetImpl< Argument *> &Args) const
bool isConstantStridedAccessLessThan(ScalarEvolution *SE, const SCEV *Ptr, int64_t MergeDistance)
bool hasLocalLinkage() const
Definition: GlobalValue.h:445
unsigned getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy, ArrayRef< Type *> Tys, FastMathFlags FMF, unsigned ScalarizationCostPassed)
GCNRegPressure max(const GCNRegPressure &P1, const GCNRegPressure &P2)
LLVMContext & Context
const T & back() const
back - Get the last element.
Definition: ArrayRef.h:157
SI Whole Quad Mode
unsigned getGatherScatterOpCost(unsigned Opcode, Type *DataTy, Value *Ptr, bool VariableMask, unsigned Alignment)
This class represents lattice values for constants.
Definition: AllocatorList.h:23
unsigned minRequiredElementSize(const Value *Val, bool &isSigned)
void getUnrollingPreferences(Loop *, ScalarEvolution &, TTI::UnrollingPreferences &)
unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index)
iterator begin() const
Definition: ArrayRef.h:136
amdgpu Simplify well known AMD library false FunctionCallee Value const Twine & Name
unsigned getCostOfKeepingLiveOverCall(ArrayRef< Type *> Tys)
const Value * getSplatValue(const Value *V)
Get splat value if the input is a splat vector or return nullptr.
const StructLayout * getStructLayout(StructType *Ty) const
Returns a StructLayout object, indicating the alignment of the struct, its size, and the offsets of i...
Definition: DataLayout.cpp:610
value_op_iterator value_op_begin()
Definition: User.h:255
The main scalar evolution driver.
MemIndexedMode
The type of load/store indexing.
unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty, TTI::OperandValueKind Opd1Info, TTI::OperandValueKind Opd2Info, TTI::OperandValueProperties Opd1PropInfo, TTI::OperandValueProperties Opd2PropInfo, ArrayRef< const Value *> Args)
A cache of @llvm.assume calls within a function.
unsigned getOperationCost(unsigned Opcode, Type *Ty, Type *OpTy)
value_op_iterator value_op_end()
Definition: User.h:258
F(f)
unsigned getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, const Instruction *I)
unsigned getPointerAddressSpace() const
Get the address space of this pointer or pointer vector type.
Definition: DerivedTypes.h:580
param_iterator param_end() const
Definition: DerivedTypes.h:129
An instruction for reading from memory.
Definition: Instructions.h:167
Hexagon Common GEP
unsigned getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment, unsigned AddressSpace, const Instruction *I)
void reserve(size_type N)
Definition: SmallVector.h:369
unsigned getIntImmCost(const APInt &Imm, Type *Ty)
int getExtCost(const Instruction *I, const Value *Src)
unsigned getBitWidth() const
Return the number of bits in the APInt.
Definition: APInt.h:1515
A templated base class for SmallPtrSet which provides the typesafe interface that is common across al...
Definition: SmallPtrSet.h:343
bool isLegalToVectorizeStoreChain(unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const
bool isIndexedLoadLegal(TTI::MemIndexedMode Mode, Type *Ty, const DataLayout &DL) const
CRTP base class for use as a mix-in that aids implementing a TargetTransformInfo-compatible class...
bool getTgtMemIntrinsic(IntrinsicInst *Inst, MemIntrinsicInfo &Info)
unsigned getLoadVectorFactor(unsigned VF, unsigned LoadSize, unsigned ChainSizeInBytes, VectorType *VecTy) const
unsigned getMemcpyCost(const Instruction *I)
unsigned getIntrinsicCost(Intrinsic::ID IID, Type *RetTy, ArrayRef< const Value *> Arguments, const User *U)
Type * getPointerElementType() const
Definition: Type.h:376
unsigned getPointerTypeSizeInBits(Type *) const
Layout pointer size, in bits, based on the type.
Definition: DataLayout.cpp:668
bool isFloatingPointTy() const
Return true if this is one of the six floating-point types.
Definition: Type.h:161
Class to represent struct types.
Definition: DerivedTypes.h:233
unsigned getCallCost(const Function *F, ArrayRef< const Value *> Arguments, const User *U)
unsigned getArithmeticReductionCost(unsigned, Type *, bool)
unsigned getIntrinsicCost(Intrinsic::ID IID, Type *RetTy, ArrayRef< Type *> ParamTys, const User *U)
const APInt & getAPInt() const
bool isLegalToVectorizeLoad(LoadInst *LI) const
Type * getMemcpyLoopLoweringType(LLVMContext &Context, Value *Length, unsigned SrcAlign, unsigned DestAlign) const
bool isTruncateFree(Type *Ty1, Type *Ty2)
bool enableAggressiveInterleaving(bool LoopHasReductions)
Class to represent function types.
Definition: DerivedTypes.h:103
unsigned getCallCost(FunctionType *FTy, int NumArgs, const User *U)
int64_t getSExtValue() const
Get sign extended value.
Definition: APInt.h:1581
llvm::Optional< unsigned > getCacheSize(TargetTransformInfo::CacheLevel Level)
Type * getType() const
All values are typed, get the type of this value.
Definition: Value.h:245
This node represents a polynomial recurrence on the trip count of the specified loop.
void getMemcpyLoopResidualLoweringType(SmallVectorImpl< Type *> &OpsOut, LLVMContext &Context, unsigned RemainingBytes, unsigned SrcAlign, unsigned DestAlign) const
PopcntSupportKind
Flags indicating the kind of support for population count.
APInt sextOrTrunc(unsigned width) const
Sign extend or truncate to width.
Definition: APInt.cpp:886
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:32
const APInt & getValue() const
Return the constant as an APInt value reference.
Definition: Constants.h:137
An instruction for storing to memory.
Definition: Instructions.h:320
const SCEV * getStepRecurrence(ScalarEvolution &SE) const
Constructs and returns the recurrence indicating how much this expression steps by.
unsigned getExtractWithExtendCost(unsigned Opcode, Type *Dst, VectorType *VecTy, unsigned Index)
Concrete subclass of DominatorTreeBase that is used to compute a normal dominator tree...
Definition: Dominators.h:144
bool canSaveCmp(Loop *L, BranchInst **BI, ScalarEvolution *SE, LoopInfo *LI, DominatorTree *DT, AssumptionCache *AC, TargetLibraryInfo *LibInfo)
Value * getOperand(unsigned i) const
Definition: User.h:169
Analysis containing CSE Info
Definition: CSEInfo.cpp:20
Type * getScalarType() const
If this is a vector type, return the element type, otherwise return &#39;this&#39;.
Definition: Type.h:303
bool isLegalToVectorizeStore(StoreInst *SI) const
unsigned getMinimumVF(unsigned ElemWidth) const
Returns options for expansion of memcmp. IsZeroCmp is.
uint64_t getZExtValue() const
Return the constant as a 64-bit unsigned integer value after it has been zero extended as appropriate...
Definition: Constants.h:148
Fast - This calling convention attempts to make calls as fast as possible (e.g.
Definition: CallingConv.h:42
unsigned getShuffleCost(TTI::ShuffleKind Kind, Type *Ty, int Index, Type *SubTp)
unsigned getCallInstrCost(Function *F, Type *RetTy, ArrayRef< Type *> Tys)
constexpr bool isPowerOf2_32(uint32_t Value)
Return true if the argument is a power of two > 0.
Definition: MathExtras.h:428
bool hasName() const
Definition: Value.h:251
Flags describing the kind of vector reduction.
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:45
This is an important class for using LLVM in a threaded context.
Definition: LLVMContext.h:64
unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy, const Instruction *I)
Conditional or Unconditional Branch instruction.
TargetTransformInfoImplBase(const TargetTransformInfoImplBase &Arg)
bool shouldFavorBackedgeIndex(const Loop *L) const
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:148
This is an important base class in LLVM.
Definition: Constant.h:41
bool isPointerTy() const
True if this is an instance of PointerType.
Definition: Type.h:223
bool isLegalToVectorizeLoadChain(unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const
unsigned getNumParams() const
Return the number of fixed parameters this function type requires.
Definition: DerivedTypes.h:139
unsigned getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty)
bool hasVolatileVariant(Instruction *I, unsigned AddrSpace)
Expected to fold away in lowering.
AMDGPU Lower Kernel Arguments
unsigned getUserCost(const User *U, ArrayRef< const Value *> Operands)
bool isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV, int64_t BaseOffset, bool HasBaseReg, int64_t Scale, unsigned AddrSpace, Instruction *I=nullptr)
param_iterator param_begin() const
Definition: DerivedTypes.h:128
unsigned getEstimatedNumberOfCaseClusters(const SwitchInst &SI, unsigned &JTSize)
unsigned getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef< unsigned > Indices, unsigned Alignment, unsigned AddressSpace, bool UseMaskForCond=false, bool UseMaskForGaps=false)
amdgpu Simplify well known AMD library false FunctionCallee Value * Arg
size_t arg_size() const
Definition: Function.h:728
Attributes of a target dependent hardware loop.
const Value * stripPointerCasts() const
Strip off pointer casts, all-zero GEPs and address space casts.
Definition: Value.cpp:525
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
const SCEVConstant * getConstantStrideStep(ScalarEvolution *SE, const SCEV *Ptr)
OperandValueProperties
Additional properties of an operand&#39;s values.
int getIntImmCodeSizeCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty)
bool collectFlatAddressOperands(SmallVectorImpl< int > &OpIndexes, Intrinsic::ID IID) const
unsigned getNumOperands() const
Definition: User.h:191
This is the shared class of boolean and integer constants.
Definition: Constants.h:83
This pass provides access to the codegen interfaces that are needed for IR-level transformations.
unsigned getStoreVectorFactor(unsigned VF, unsigned StoreSize, unsigned ChainSizeInBytes, VectorType *VecTy) const
unsigned getCallCost(const Function *F, int NumArgs, const User *U)
unsigned getScalarSizeInBits() const LLVM_READONLY
If this is a vector type, return the getPrimitiveSizeInBits value for the element type...
Definition: Type.cpp:129
unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract)
TargetTransformInfoImplBase(const DataLayout &DL)
This is a &#39;vector&#39; (really, a variable-sized array), optimized for the case when the array is small...
Definition: SmallVector.h:837
Provides information about what library functions are available for the current target.
AddressSpace
Definition: NVPTXBaseInfo.h:21
iterator end() const
Definition: ArrayRef.h:137
bool isLegalInteger(uint64_t Width) const
Returns true if the specified type is known to be a native integer type supported by the CPU...
Definition: DataLayout.h:255
Type * getReturnType() const
Definition: DerivedTypes.h:124
bool useReductionIntrinsic(unsigned Opcode, Type *Ty, TTI::ReductionFlags Flags) const
bool allowsMisalignedMemoryAccesses(LLVMContext &Context, unsigned BitWidth, unsigned AddressSpace, unsigned Alignment, bool *Fast)
Intrinsic::ID getIntrinsicID() const LLVM_READONLY
getIntrinsicID - This method returns the ID number of the specified function, or Intrinsic::not_intri...
Definition: Function.h:193
bool shouldConsiderAddressTypePromotion(const Instruction &I, bool &AllowPromotionWithoutCommonHeader)
FunctionType * getFunctionType() const
Returns the FunctionType for me.
Definition: Function.h:163
int getScalingFactorCost(Type *Ty, GlobalValue *BaseGV, int64_t BaseOffset, bool HasBaseReg, int64_t Scale, unsigned AddrSpace)
Class to represent vector types.
Definition: DerivedTypes.h:427
Class for arbitrary precision integers.
Definition: APInt.h:69
unsigned getLoadStoreVecRegBitWidth(unsigned AddrSpace) const
unsigned getMinMaxReductionCost(Type *, Type *, bool, bool)
uint64_t getTypeSizeInBits(Type *Ty) const
Size examples:
Definition: DataLayout.h:602
bool isLSRCostLess(TTI::LSRCost &C1, TTI::LSRCost &C2)
uint64_t getTypeAllocSize(Type *Ty) const
Returns the offset in bytes between successive objects of the specified type, including alignment pad...
Definition: DataLayout.h:470
unsigned getMaskedMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment, unsigned AddressSpace)
unsigned getCFInstrCost(unsigned Opcode)
uint64_t getElementOffset(unsigned Idx) const
Definition: DataLayout.h:585
This class represents an analyzed expression in the program.
Represents a single loop in the control flow graph.
Definition: LoopInfo.h:509
ArrayRef< T > drop_front(size_t N=1) const
Drop the first N elements of the array.
Definition: ArrayRef.h:187
Parameters that control the generic loop unrolling transformation.
StringRef getName() const
Return a constant reference to the value&#39;s name.
Definition: Value.cpp:214
Establish a view to a call site for examination.
Definition: CallSite.h:897
#define I(x, y, z)
Definition: MD5.cpp:58
unsigned getOperandsScalarizationOverhead(ArrayRef< const Value *> Args, unsigned VF)
int getGEPCost(Type *PointeeType, const Value *Ptr, ArrayRef< const Value *> Operands)
bool isIndexedStoreLegal(TTI::MemIndexedMode Mode, Type *Ty, const DataLayout &DL) const
bool areInlineCompatible(const Function *Caller, const Function *Callee) const
bool isLegalNTLoad(Type *DataType, unsigned Alignment)
LLVM_NODISCARD std::enable_if<!is_simple_type< Y >::value, typename cast_retty< X, const Y >::ret_type >::type dyn_cast(const Y &Val)
Definition: Casting.h:332
uint32_t Size
Definition: Profile.cpp:46
unsigned getAddressComputationCost(Type *Tp, ScalarEvolution *, const SCEV *)
bool isLegalNTStore(Type *DataType, unsigned Alignment)
Multiway switch.
bool rewriteIntrinsicWithAddressSpace(IntrinsicInst *II, Value *OldV, Value *NewV) const
TargetTransformInfoImplBase(TargetTransformInfoImplBase &&Arg)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
The cost of a typical &#39;add&#39; instruction.
bool isHardwareLoopProfitable(Loop *L, ScalarEvolution &SE, AssumptionCache &AC, TargetLibraryInfo *LibInfo, HardwareLoopInfo &HWLoopInfo)
LLVM Value Representation.
Definition: Value.h:73
uint64_t getTypeStoreSize(Type *Ty) const
Returns the maximum number of bytes that may be overwritten by storing the specified type...
Definition: DataLayout.h:445
unsigned getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm, Type *Ty)
unsigned getOpcode() const
Return the opcode for this Instruction or ConstantExpr.
Definition: Operator.h:40
#define LLVM_FALLTHROUGH
LLVM_FALLTHROUGH - Mark fallthrough cases in switch statements.
Definition: Compiler.h:258
bool shouldExpandReduction(const IntrinsicInst *II) const
Attribute getFnAttribute(Attribute::AttrKind Kind) const
Return the attribute for the given attribute kind.
Definition: Function.h:333
bool shouldMaximizeVectorBandwidth(bool OptSize) const
const DataLayout & getDataLayout() const
Convenience struct for specifying and reasoning about fast-math flags.
Definition: Operator.h:159
OperandValueKind
Additional information about an operand&#39;s possible values.
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
This pass exposes codegen information to IR-level passes.
llvm::Optional< unsigned > getCacheAssociativity(TargetTransformInfo::CacheLevel Level)
CacheLevel
The possible cache levels.
unsigned getRegisterBitWidth(bool Vector) const
Information about a load/store intrinsic defined by the target.
The cost of a &#39;div&#39; instruction on x86.
static IntegerType * getInt8Ty(LLVMContext &C)
Definition: Type.cpp:173
int getGEPCost(Type *PointeeType, const Value *Ptr, ArrayRef< const Value *> Operands)
constexpr char Args[]
Key for Kernel::Metadata::mArgs.
bool hasDivRemOp(Type *DataType, bool IsSigned)
TTI::PopcntSupportKind getPopcntSupport(unsigned IntTyWidthInBit)
Value * getOrCreateResultFromMemIntrinsic(IntrinsicInst *Inst, Type *ExpectedType)
bool empty() const
empty - Check if the array is empty.
Definition: ArrayRef.h:143
A wrapper class for inspecting calls to intrinsic functions.
Definition: IntrinsicInst.h:43
This class represents a constant integer value.
unsigned getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy, ArrayRef< Value *> Args, FastMathFlags FMF, unsigned VF)
TTI::MemCmpExpansionOptions enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const
ShuffleKind
The various kinds of shuffle patterns for vector queries.
gep_type_iterator gep_type_begin(const User *GEP)