1 //===- llvm/Analysis/TargetTransformInfo.cpp ------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/Analysis/TargetTransformInfo.h"
11 #include "llvm/Analysis/TargetTransformInfoImpl.h"
12 #include "llvm/IR/CallSite.h"
13 #include "llvm/IR/DataLayout.h"
14 #include "llvm/IR/Instruction.h"
15 #include "llvm/IR/Instructions.h"
16 #include "llvm/IR/IntrinsicInst.h"
17 #include "llvm/IR/Module.h"
18 #include "llvm/IR/Operator.h"
19 #include "llvm/IR/PatternMatch.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Support/ErrorHandling.h"
22 #include <utility>
23 
24 using namespace llvm;
25 using namespace PatternMatch;
26 
27 #define DEBUG_TYPE "tti"
28 
29 static cl::opt<bool> EnableReduxCost("costmodel-reduxcost", cl::init(false),
30                                      cl::Hidden,
31                                      cl::desc("Recognize reduction patterns."));
32 
33 namespace {
34 /// \brief No-op implementation of the TTI interface using the utility base
35 /// classes.
36 ///
37 /// This is used when no target specific information is available.
38 struct NoTTIImpl : TargetTransformInfoImplCRTPBase<NoTTIImpl> {
39   explicit NoTTIImpl(const DataLayout &DL)
40       : TargetTransformInfoImplCRTPBase<NoTTIImpl>(DL) {}
41 };
42 }
43 
44 TargetTransformInfo::TargetTransformInfo(const DataLayout &DL)
45     : TTIImpl(new Model<NoTTIImpl>(NoTTIImpl(DL))) {}
46 
47 TargetTransformInfo::~TargetTransformInfo() {}
48 
49 TargetTransformInfo::TargetTransformInfo(TargetTransformInfo &&Arg)
50     : TTIImpl(std::move(Arg.TTIImpl)) {}
51 
52 TargetTransformInfo &TargetTransformInfo::operator=(TargetTransformInfo &&RHS) {
53   TTIImpl = std::move(RHS.TTIImpl);
54   return *this;
55 }
56 
57 int TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
58                                           Type *OpTy) const {
59   int Cost = TTIImpl->getOperationCost(Opcode, Ty, OpTy);
60   assert(Cost >= 0 && "TTI should not produce negative costs!");
61   return Cost;
62 }
63 
64 int TargetTransformInfo::getCallCost(FunctionType *FTy, int NumArgs) const {
65   int Cost = TTIImpl->getCallCost(FTy, NumArgs);
66   assert(Cost >= 0 && "TTI should not produce negative costs!");
67   return Cost;
68 }
69 
70 int TargetTransformInfo::getCallCost(const Function *F,
71                                      ArrayRef<const Value *> Arguments) const {
72   int Cost = TTIImpl->getCallCost(F, Arguments);
73   assert(Cost >= 0 && "TTI should not produce negative costs!");
74   return Cost;
75 }
76 
77 unsigned TargetTransformInfo::getInliningThresholdMultiplier() const {
78   return TTIImpl->getInliningThresholdMultiplier();
79 }
80 
81 int TargetTransformInfo::getGEPCost(Type *PointeeType, const Value *Ptr,
82                                     ArrayRef<const Value *> Operands) const {
83   return TTIImpl->getGEPCost(PointeeType, Ptr, Operands);
84 }
85 
86 int TargetTransformInfo::getExtCost(const Instruction *I,
87                                     const Value *Src) const {
88   return TTIImpl->getExtCost(I, Src);
89 }
90 
91 int TargetTransformInfo::getIntrinsicCost(
92     Intrinsic::ID IID, Type *RetTy, ArrayRef<const Value *> Arguments) const {
93   int Cost = TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
94   assert(Cost >= 0 && "TTI should not produce negative costs!");
95   return Cost;
96 }
97 
98 unsigned
99 TargetTransformInfo::getEstimatedNumberOfCaseClusters(const SwitchInst &SI,
100                                                       unsigned &JTSize) const {
101   return TTIImpl->getEstimatedNumberOfCaseClusters(SI, JTSize);
102 }
103 
104 int TargetTransformInfo::getUserCost(const User *U,
105     ArrayRef<const Value *> Operands) const {
106   int Cost = TTIImpl->getUserCost(U, Operands);
107   assert(Cost >= 0 && "TTI should not produce negative costs!");
108   return Cost;
109 }
110 
111 bool TargetTransformInfo::hasBranchDivergence() const {
112   return TTIImpl->hasBranchDivergence();
113 }
114 
115 bool TargetTransformInfo::isSourceOfDivergence(const Value *V) const {
116   return TTIImpl->isSourceOfDivergence(V);
117 }
118 
119 bool llvm::TargetTransformInfo::isAlwaysUniform(const Value *V) const {
120   return TTIImpl->isAlwaysUniform(V);
121 }
122 
123 unsigned TargetTransformInfo::getFlatAddressSpace() const {
124   return TTIImpl->getFlatAddressSpace();
125 }
126 
127 bool TargetTransformInfo::isLoweredToCall(const Function *F) const {
128   return TTIImpl->isLoweredToCall(F);
129 }
130 
131 void TargetTransformInfo::getUnrollingPreferences(
132     Loop *L, ScalarEvolution &SE, UnrollingPreferences &UP) const {
133   return TTIImpl->getUnrollingPreferences(L, SE, UP);
134 }
135 
136 bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
137   return TTIImpl->isLegalAddImmediate(Imm);
138 }
139 
140 bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
141   return TTIImpl->isLegalICmpImmediate(Imm);
142 }
143 
144 bool TargetTransformInfo::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
145                                                 int64_t BaseOffset,
146                                                 bool HasBaseReg,
147                                                 int64_t Scale,
148                                                 unsigned AddrSpace,
149                                                 Instruction *I) const {
150   return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
151                                         Scale, AddrSpace, I);
152 }
153 
154 bool TargetTransformInfo::isLSRCostLess(LSRCost &C1, LSRCost &C2) const {
155   return TTIImpl->isLSRCostLess(C1, C2);
156 }
157 
158 bool TargetTransformInfo::canMacroFuseCmp() const {
159   return TTIImpl->canMacroFuseCmp();
160 }
161 
162 bool TargetTransformInfo::shouldFavorPostInc() const {
163   return TTIImpl->shouldFavorPostInc();
164 }
165 
166 bool TargetTransformInfo::isLegalMaskedStore(Type *DataType) const {
167   return TTIImpl->isLegalMaskedStore(DataType);
168 }
169 
170 bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType) const {
171   return TTIImpl->isLegalMaskedLoad(DataType);
172 }
173 
174 bool TargetTransformInfo::isLegalMaskedGather(Type *DataType) const {
175   return TTIImpl->isLegalMaskedGather(DataType);
176 }
177 
178 bool TargetTransformInfo::isLegalMaskedScatter(Type *DataType) const {
179   return TTIImpl->isLegalMaskedScatter(DataType);
180 }
181 
182 bool TargetTransformInfo::hasDivRemOp(Type *DataType, bool IsSigned) const {
183   return TTIImpl->hasDivRemOp(DataType, IsSigned);
184 }
185 
186 bool TargetTransformInfo::hasVolatileVariant(Instruction *I,
187                                              unsigned AddrSpace) const {
188   return TTIImpl->hasVolatileVariant(I, AddrSpace);
189 }
190 
191 bool TargetTransformInfo::prefersVectorizedAddressing() const {
192   return TTIImpl->prefersVectorizedAddressing();
193 }
194 
195 int TargetTransformInfo::getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
196                                               int64_t BaseOffset,
197                                               bool HasBaseReg,
198                                               int64_t Scale,
199                                               unsigned AddrSpace) const {
200   int Cost = TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
201                                            Scale, AddrSpace);
202   assert(Cost >= 0 && "TTI should not produce negative costs!");
203   return Cost;
204 }
205 
206 bool TargetTransformInfo::LSRWithInstrQueries() const {
207   return TTIImpl->LSRWithInstrQueries();
208 }
209 
210 bool TargetTransformInfo::isTruncateFree(Type *Ty1, Type *Ty2) const {
211   return TTIImpl->isTruncateFree(Ty1, Ty2);
212 }
213 
214 bool TargetTransformInfo::isProfitableToHoist(Instruction *I) const {
215   return TTIImpl->isProfitableToHoist(I);
216 }
217 
218 bool TargetTransformInfo::useAA() const { return TTIImpl->useAA(); }
219 
220 bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
221   return TTIImpl->isTypeLegal(Ty);
222 }
223 
224 unsigned TargetTransformInfo::getJumpBufAlignment() const {
225   return TTIImpl->getJumpBufAlignment();
226 }
227 
228 unsigned TargetTransformInfo::getJumpBufSize() const {
229   return TTIImpl->getJumpBufSize();
230 }
231 
232 bool TargetTransformInfo::shouldBuildLookupTables() const {
233   return TTIImpl->shouldBuildLookupTables();
234 }
235 bool TargetTransformInfo::shouldBuildLookupTablesForConstant(Constant *C) const {
236   return TTIImpl->shouldBuildLookupTablesForConstant(C);
237 }
238 
239 bool TargetTransformInfo::useColdCCForColdCall(Function &F) const {
240   return TTIImpl->useColdCCForColdCall(F);
241 }
242 
243 unsigned TargetTransformInfo::
244 getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) const {
245   return TTIImpl->getScalarizationOverhead(Ty, Insert, Extract);
246 }
247 
248 unsigned TargetTransformInfo::
249 getOperandsScalarizationOverhead(ArrayRef<const Value *> Args,
250                                  unsigned VF) const {
251   return TTIImpl->getOperandsScalarizationOverhead(Args, VF);
252 }
253 
254 bool TargetTransformInfo::supportsEfficientVectorElementLoadStore() const {
255   return TTIImpl->supportsEfficientVectorElementLoadStore();
256 }
257 
258 bool TargetTransformInfo::enableAggressiveInterleaving(bool LoopHasReductions) const {
259   return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
260 }
261 
262 const TargetTransformInfo::MemCmpExpansionOptions *
263 TargetTransformInfo::enableMemCmpExpansion(bool IsZeroCmp) const {
264   return TTIImpl->enableMemCmpExpansion(IsZeroCmp);
265 }
266 
267 bool TargetTransformInfo::enableInterleavedAccessVectorization() const {
268   return TTIImpl->enableInterleavedAccessVectorization();
269 }
270 
271 bool TargetTransformInfo::isFPVectorizationPotentiallyUnsafe() const {
272   return TTIImpl->isFPVectorizationPotentiallyUnsafe();
273 }
274 
275 bool TargetTransformInfo::allowsMisalignedMemoryAccesses(LLVMContext &Context,
276                                                          unsigned BitWidth,
277                                                          unsigned AddressSpace,
278                                                          unsigned Alignment,
279                                                          bool *Fast) const {
280   return TTIImpl->allowsMisalignedMemoryAccesses(Context, BitWidth, AddressSpace,
281                                                  Alignment, Fast);
282 }
283 
284 TargetTransformInfo::PopcntSupportKind
285 TargetTransformInfo::getPopcntSupport(unsigned IntTyWidthInBit) const {
286   return TTIImpl->getPopcntSupport(IntTyWidthInBit);
287 }
288 
289 bool TargetTransformInfo::haveFastSqrt(Type *Ty) const {
290   return TTIImpl->haveFastSqrt(Ty);
291 }
292 
293 bool TargetTransformInfo::isFCmpOrdCheaperThanFCmpZero(Type *Ty) const {
294   return TTIImpl->isFCmpOrdCheaperThanFCmpZero(Ty);
295 }
296 
297 int TargetTransformInfo::getFPOpCost(Type *Ty) const {
298   int Cost = TTIImpl->getFPOpCost(Ty);
299   assert(Cost >= 0 && "TTI should not produce negative costs!");
300   return Cost;
301 }
302 
303 int TargetTransformInfo::getIntImmCodeSizeCost(unsigned Opcode, unsigned Idx,
304                                                const APInt &Imm,
305                                                Type *Ty) const {
306   int Cost = TTIImpl->getIntImmCodeSizeCost(Opcode, Idx, Imm, Ty);
307   assert(Cost >= 0 && "TTI should not produce negative costs!");
308   return Cost;
309 }
310 
311 int TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
312   int Cost = TTIImpl->getIntImmCost(Imm, Ty);
313   assert(Cost >= 0 && "TTI should not produce negative costs!");
314   return Cost;
315 }
316 
317 int TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
318                                        const APInt &Imm, Type *Ty) const {
319   int Cost = TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
320   assert(Cost >= 0 && "TTI should not produce negative costs!");
321   return Cost;
322 }
323 
324 int TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
325                                        const APInt &Imm, Type *Ty) const {
326   int Cost = TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
327   assert(Cost >= 0 && "TTI should not produce negative costs!");
328   return Cost;
329 }
330 
331 unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
332   return TTIImpl->getNumberOfRegisters(Vector);
333 }
334 
335 unsigned TargetTransformInfo::getRegisterBitWidth(bool Vector) const {
336   return TTIImpl->getRegisterBitWidth(Vector);
337 }
338 
339 unsigned TargetTransformInfo::getMinVectorRegisterBitWidth() const {
340   return TTIImpl->getMinVectorRegisterBitWidth();
341 }
342 
343 bool TargetTransformInfo::shouldMaximizeVectorBandwidth(bool OptSize) const {
344   return TTIImpl->shouldMaximizeVectorBandwidth(OptSize);
345 }
346 
347 unsigned TargetTransformInfo::getMinimumVF(unsigned ElemWidth) const {
348   return TTIImpl->getMinimumVF(ElemWidth);
349 }
350 
351 bool TargetTransformInfo::shouldConsiderAddressTypePromotion(
352     const Instruction &I, bool &AllowPromotionWithoutCommonHeader) const {
353   return TTIImpl->shouldConsiderAddressTypePromotion(
354       I, AllowPromotionWithoutCommonHeader);
355 }
356 
357 unsigned TargetTransformInfo::getCacheLineSize() const {
358   return TTIImpl->getCacheLineSize();
359 }
360 
361 llvm::Optional<unsigned> TargetTransformInfo::getCacheSize(CacheLevel Level)
362   const {
363   return TTIImpl->getCacheSize(Level);
364 }
365 
366 llvm::Optional<unsigned> TargetTransformInfo::getCacheAssociativity(
367   CacheLevel Level) const {
368   return TTIImpl->getCacheAssociativity(Level);
369 }
370 
371 unsigned TargetTransformInfo::getPrefetchDistance() const {
372   return TTIImpl->getPrefetchDistance();
373 }
374 
375 unsigned TargetTransformInfo::getMinPrefetchStride() const {
376   return TTIImpl->getMinPrefetchStride();
377 }
378 
379 unsigned TargetTransformInfo::getMaxPrefetchIterationsAhead() const {
380   return TTIImpl->getMaxPrefetchIterationsAhead();
381 }
382 
383 unsigned TargetTransformInfo::getMaxInterleaveFactor(unsigned VF) const {
384   return TTIImpl->getMaxInterleaveFactor(VF);
385 }
386 
387 int TargetTransformInfo::getArithmeticInstrCost(
388     unsigned Opcode, Type *Ty, OperandValueKind Opd1Info,
389     OperandValueKind Opd2Info, OperandValueProperties Opd1PropInfo,
390     OperandValueProperties Opd2PropInfo,
391     ArrayRef<const Value *> Args) const {
392   int Cost = TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
393                                              Opd1PropInfo, Opd2PropInfo, Args);
394   assert(Cost >= 0 && "TTI should not produce negative costs!");
395   return Cost;
396 }
397 
398 int TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty, int Index,
399                                         Type *SubTp) const {
400   int Cost = TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
401   assert(Cost >= 0 && "TTI should not produce negative costs!");
402   return Cost;
403 }
404 
405 int TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
406                                  Type *Src, const Instruction *I) const {
407   assert ((I == nullptr || I->getOpcode() == Opcode) &&
408           "Opcode should reflect passed instruction.");
409   int Cost = TTIImpl->getCastInstrCost(Opcode, Dst, Src, I);
410   assert(Cost >= 0 && "TTI should not produce negative costs!");
411   return Cost;
412 }
413 
414 int TargetTransformInfo::getExtractWithExtendCost(unsigned Opcode, Type *Dst,
415                                                   VectorType *VecTy,
416                                                   unsigned Index) const {
417   int Cost = TTIImpl->getExtractWithExtendCost(Opcode, Dst, VecTy, Index);
418   assert(Cost >= 0 && "TTI should not produce negative costs!");
419   return Cost;
420 }
421 
422 int TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
423   int Cost = TTIImpl->getCFInstrCost(Opcode);
424   assert(Cost >= 0 && "TTI should not produce negative costs!");
425   return Cost;
426 }
427 
428 int TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
429                                  Type *CondTy, const Instruction *I) const {
430   assert ((I == nullptr || I->getOpcode() == Opcode) &&
431           "Opcode should reflect passed instruction.");
432   int Cost = TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy, I);
433   assert(Cost >= 0 && "TTI should not produce negative costs!");
434   return Cost;
435 }
436 
437 int TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
438                                             unsigned Index) const {
439   int Cost = TTIImpl->getVectorInstrCost(Opcode, Val, Index);
440   assert(Cost >= 0 && "TTI should not produce negative costs!");
441   return Cost;
442 }
443 
444 int TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
445                                          unsigned Alignment,
446                                          unsigned AddressSpace,
447                                          const Instruction *I) const {
448   assert ((I == nullptr || I->getOpcode() == Opcode) &&
449           "Opcode should reflect passed instruction.");
450   int Cost = TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace, I);
451   assert(Cost >= 0 && "TTI should not produce negative costs!");
452   return Cost;
453 }
454 
455 int TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
456                                                unsigned Alignment,
457                                                unsigned AddressSpace) const {
458   int Cost =
459       TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
460   assert(Cost >= 0 && "TTI should not produce negative costs!");
461   return Cost;
462 }
463 
464 int TargetTransformInfo::getGatherScatterOpCost(unsigned Opcode, Type *DataTy,
465                                                 Value *Ptr, bool VariableMask,
466                                                 unsigned Alignment) const {
467   int Cost = TTIImpl->getGatherScatterOpCost(Opcode, DataTy, Ptr, VariableMask,
468                                              Alignment);
469   assert(Cost >= 0 && "TTI should not produce negative costs!");
470   return Cost;
471 }
472 
473 int TargetTransformInfo::getInterleavedMemoryOpCost(
474     unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
475     unsigned Alignment, unsigned AddressSpace) const {
476   int Cost = TTIImpl->getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
477                                                  Alignment, AddressSpace);
478   assert(Cost >= 0 && "TTI should not produce negative costs!");
479   return Cost;
480 }
481 
482 int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
483                                     ArrayRef<Type *> Tys, FastMathFlags FMF,
484                                     unsigned ScalarizationCostPassed) const {
485   int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys, FMF,
486                                             ScalarizationCostPassed);
487   assert(Cost >= 0 && "TTI should not produce negative costs!");
488   return Cost;
489 }
490 
491 int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
492            ArrayRef<Value *> Args, FastMathFlags FMF, unsigned VF) const {
493   int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Args, FMF, VF);
494   assert(Cost >= 0 && "TTI should not produce negative costs!");
495   return Cost;
496 }
497 
498 int TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
499                                           ArrayRef<Type *> Tys) const {
500   int Cost = TTIImpl->getCallInstrCost(F, RetTy, Tys);
501   assert(Cost >= 0 && "TTI should not produce negative costs!");
502   return Cost;
503 }
504 
505 unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
506   return TTIImpl->getNumberOfParts(Tp);
507 }
508 
509 int TargetTransformInfo::getAddressComputationCost(Type *Tp,
510                                                    ScalarEvolution *SE,
511                                                    const SCEV *Ptr) const {
512   int Cost = TTIImpl->getAddressComputationCost(Tp, SE, Ptr);
513   assert(Cost >= 0 && "TTI should not produce negative costs!");
514   return Cost;
515 }
516 
517 int TargetTransformInfo::getArithmeticReductionCost(unsigned Opcode, Type *Ty,
518                                                     bool IsPairwiseForm) const {
519   int Cost = TTIImpl->getArithmeticReductionCost(Opcode, Ty, IsPairwiseForm);
520   assert(Cost >= 0 && "TTI should not produce negative costs!");
521   return Cost;
522 }
523 
524 int TargetTransformInfo::getMinMaxReductionCost(Type *Ty, Type *CondTy,
525                                                 bool IsPairwiseForm,
526                                                 bool IsUnsigned) const {
527   int Cost =
528       TTIImpl->getMinMaxReductionCost(Ty, CondTy, IsPairwiseForm, IsUnsigned);
529   assert(Cost >= 0 && "TTI should not produce negative costs!");
530   return Cost;
531 }
532 
533 unsigned
534 TargetTransformInfo::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) const {
535   return TTIImpl->getCostOfKeepingLiveOverCall(Tys);
536 }
537 
538 bool TargetTransformInfo::getTgtMemIntrinsic(IntrinsicInst *Inst,
539                                              MemIntrinsicInfo &Info) const {
540   return TTIImpl->getTgtMemIntrinsic(Inst, Info);
541 }
542 
543 unsigned TargetTransformInfo::getAtomicMemIntrinsicMaxElementSize() const {
544   return TTIImpl->getAtomicMemIntrinsicMaxElementSize();
545 }
546 
547 Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
548     IntrinsicInst *Inst, Type *ExpectedType) const {
549   return TTIImpl->getOrCreateResultFromMemIntrinsic(Inst, ExpectedType);
550 }
551 
552 Type *TargetTransformInfo::getMemcpyLoopLoweringType(LLVMContext &Context,
553                                                      Value *Length,
554                                                      unsigned SrcAlign,
555                                                      unsigned DestAlign) const {
556   return TTIImpl->getMemcpyLoopLoweringType(Context, Length, SrcAlign,
557                                             DestAlign);
558 }
559 
560 void TargetTransformInfo::getMemcpyLoopResidualLoweringType(
561     SmallVectorImpl<Type *> &OpsOut, LLVMContext &Context,
562     unsigned RemainingBytes, unsigned SrcAlign, unsigned DestAlign) const {
563   TTIImpl->getMemcpyLoopResidualLoweringType(OpsOut, Context, RemainingBytes,
564                                              SrcAlign, DestAlign);
565 }
566 
567 bool TargetTransformInfo::areInlineCompatible(const Function *Caller,
568                                               const Function *Callee) const {
569   return TTIImpl->areInlineCompatible(Caller, Callee);
570 }
571 
572 bool TargetTransformInfo::isIndexedLoadLegal(MemIndexedMode Mode,
573                                              Type *Ty) const {
574   return TTIImpl->isIndexedLoadLegal(Mode, Ty);
575 }
576 
577 bool TargetTransformInfo::isIndexedStoreLegal(MemIndexedMode Mode,
578                                               Type *Ty) const {
579   return TTIImpl->isIndexedStoreLegal(Mode, Ty);
580 }
581 
582 unsigned TargetTransformInfo::getLoadStoreVecRegBitWidth(unsigned AS) const {
583   return TTIImpl->getLoadStoreVecRegBitWidth(AS);
584 }
585 
586 bool TargetTransformInfo::isLegalToVectorizeLoad(LoadInst *LI) const {
587   return TTIImpl->isLegalToVectorizeLoad(LI);
588 }
589 
590 bool TargetTransformInfo::isLegalToVectorizeStore(StoreInst *SI) const {
591   return TTIImpl->isLegalToVectorizeStore(SI);
592 }
593 
594 bool TargetTransformInfo::isLegalToVectorizeLoadChain(
595     unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
596   return TTIImpl->isLegalToVectorizeLoadChain(ChainSizeInBytes, Alignment,
597                                               AddrSpace);
598 }
599 
600 bool TargetTransformInfo::isLegalToVectorizeStoreChain(
601     unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
602   return TTIImpl->isLegalToVectorizeStoreChain(ChainSizeInBytes, Alignment,
603                                                AddrSpace);
604 }
605 
606 unsigned TargetTransformInfo::getLoadVectorFactor(unsigned VF,
607                                                   unsigned LoadSize,
608                                                   unsigned ChainSizeInBytes,
609                                                   VectorType *VecTy) const {
610   return TTIImpl->getLoadVectorFactor(VF, LoadSize, ChainSizeInBytes, VecTy);
611 }
612 
613 unsigned TargetTransformInfo::getStoreVectorFactor(unsigned VF,
614                                                    unsigned StoreSize,
615                                                    unsigned ChainSizeInBytes,
616                                                    VectorType *VecTy) const {
617   return TTIImpl->getStoreVectorFactor(VF, StoreSize, ChainSizeInBytes, VecTy);
618 }
619 
620 bool TargetTransformInfo::useReductionIntrinsic(unsigned Opcode,
621                                                 Type *Ty, ReductionFlags Flags) const {
622   return TTIImpl->useReductionIntrinsic(Opcode, Ty, Flags);
623 }
624 
625 bool TargetTransformInfo::shouldExpandReduction(const IntrinsicInst *II) const {
626   return TTIImpl->shouldExpandReduction(II);
627 }
628 
629 int TargetTransformInfo::getInstructionLatency(const Instruction *I) const {
630   return TTIImpl->getInstructionLatency(I);
631 }
632 
633 static bool isReverseVectorMask(ArrayRef<int> Mask) {
634   for (unsigned i = 0, MaskSize = Mask.size(); i < MaskSize; ++i)
635     if (Mask[i] >= 0 && Mask[i] != (int)(MaskSize - 1 - i))
636       return false;
637   return true;
638 }
639 
640 static bool isSingleSourceVectorMask(ArrayRef<int> Mask) {
641   bool Vec0 = false;
642   bool Vec1 = false;
643   for (unsigned i = 0, NumVecElts = Mask.size(); i < NumVecElts; ++i) {
644     if (Mask[i] >= 0) {
645       if ((unsigned)Mask[i] >= NumVecElts)
646         Vec1 = true;
647       else
648         Vec0 = true;
649     }
650   }
651   return !(Vec0 && Vec1);
652 }
653 
654 static bool isZeroEltBroadcastVectorMask(ArrayRef<int> Mask) {
655   for (unsigned i = 0; i < Mask.size(); ++i)
656     if (Mask[i] > 0)
657       return false;
658   return true;
659 }
660 
661 static bool isAlternateVectorMask(ArrayRef<int> Mask) {
662   bool isAlternate = true;
663   unsigned MaskSize = Mask.size();
664 
665   // Example: shufflevector A, B, <0,5,2,7>
666   for (unsigned i = 0; i < MaskSize && isAlternate; ++i) {
667     if (Mask[i] < 0)
668       continue;
669     isAlternate = Mask[i] == (int)((i & 1) ? MaskSize + i : i);
670   }
671 
672   if (isAlternate)
673     return true;
674 
675   isAlternate = true;
676   // Example: shufflevector A, B, <4,1,6,3>
677   for (unsigned i = 0; i < MaskSize && isAlternate; ++i) {
678     if (Mask[i] < 0)
679       continue;
680     isAlternate = Mask[i] == (int)((i & 1) ? i : MaskSize + i);
681   }
682 
683   return isAlternate;
684 }
685 
686 static TargetTransformInfo::OperandValueKind getOperandInfo(Value *V) {
687   TargetTransformInfo::OperandValueKind OpInfo =
688       TargetTransformInfo::OK_AnyValue;
689 
690   // Check for a splat of a constant or for a non uniform vector of constants.
691   if (isa<ConstantVector>(V) || isa<ConstantDataVector>(V)) {
692     OpInfo = TargetTransformInfo::OK_NonUniformConstantValue;
693     if (cast<Constant>(V)->getSplatValue() != nullptr)
694       OpInfo = TargetTransformInfo::OK_UniformConstantValue;
695   }
696 
697   // Check for a splat of a uniform value. This is not loop aware, so return
698   // true only for the obviously uniform cases (argument, globalvalue)
699   const Value *Splat = getSplatValue(V);
700   if (Splat && (isa<Argument>(Splat) || isa<GlobalValue>(Splat)))
701     OpInfo = TargetTransformInfo::OK_UniformValue;
702 
703   return OpInfo;
704 }
705 
706 static bool matchPairwiseShuffleMask(ShuffleVectorInst *SI, bool IsLeft,
707                                      unsigned Level) {
708   // We don't need a shuffle if we just want to have element 0 in position 0 of
709   // the vector.
710   if (!SI && Level == 0 && IsLeft)
711     return true;
712   else if (!SI)
713     return false;
714 
715   SmallVector<int, 32> Mask(SI->getType()->getVectorNumElements(), -1);
716 
717   // Build a mask of 0, 2, ... (left) or 1, 3, ... (right) depending on whether
718   // we look at the left or right side.
719   for (unsigned i = 0, e = (1 << Level), val = !IsLeft; i != e; ++i, val += 2)
720     Mask[i] = val;
721 
722   SmallVector<int, 16> ActualMask = SI->getShuffleMask();
723   return Mask == ActualMask;
724 }
725 
726 namespace {
727 /// Kind of the reduction data.
728 enum ReductionKind {
729   RK_None,           /// Not a reduction.
730   RK_Arithmetic,     /// Binary reduction data.
731   RK_MinMax,         /// Min/max reduction data.
732   RK_UnsignedMinMax, /// Unsigned min/max reduction data.
733 };
734 /// Contains opcode + LHS/RHS parts of the reduction operations.
735 struct ReductionData {
736   ReductionData() = delete;
737   ReductionData(ReductionKind Kind, unsigned Opcode, Value *LHS, Value *RHS)
738       : Opcode(Opcode), LHS(LHS), RHS(RHS), Kind(Kind) {
739     assert(Kind != RK_None && "expected binary or min/max reduction only.");
740   }
741   unsigned Opcode = 0;
742   Value *LHS = nullptr;
743   Value *RHS = nullptr;
744   ReductionKind Kind = RK_None;
745   bool hasSameData(ReductionData &RD) const {
746     return Kind == RD.Kind && Opcode == RD.Opcode;
747   }
748 };
749 } // namespace
750 
751 static Optional<ReductionData> getReductionData(Instruction *I) {
752   Value *L, *R;
753   if (m_BinOp(m_Value(L), m_Value(R)).match(I))
754     return ReductionData(RK_Arithmetic, I->getOpcode(), L, R);
755   if (auto *SI = dyn_cast<SelectInst>(I)) {
756     if (m_SMin(m_Value(L), m_Value(R)).match(SI) ||
757         m_SMax(m_Value(L), m_Value(R)).match(SI) ||
758         m_OrdFMin(m_Value(L), m_Value(R)).match(SI) ||
759         m_OrdFMax(m_Value(L), m_Value(R)).match(SI) ||
760         m_UnordFMin(m_Value(L), m_Value(R)).match(SI) ||
761         m_UnordFMax(m_Value(L), m_Value(R)).match(SI)) {
762       auto *CI = cast<CmpInst>(SI->getCondition());
763       return ReductionData(RK_MinMax, CI->getOpcode(), L, R);
764     }
765     if (m_UMin(m_Value(L), m_Value(R)).match(SI) ||
766         m_UMax(m_Value(L), m_Value(R)).match(SI)) {
767       auto *CI = cast<CmpInst>(SI->getCondition());
768       return ReductionData(RK_UnsignedMinMax, CI->getOpcode(), L, R);
769     }
770   }
771   return llvm::None;
772 }
773 
774 static ReductionKind matchPairwiseReductionAtLevel(Instruction *I,
775                                                    unsigned Level,
776                                                    unsigned NumLevels) {
777   // Match one level of pairwise operations.
778   // %rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef,
779   //       <4 x i32> <i32 0, i32 2 , i32 undef, i32 undef>
780   // %rdx.shuf.0.1 = shufflevector <4 x float> %rdx, <4 x float> undef,
781   //       <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
782   // %bin.rdx.0 = fadd <4 x float> %rdx.shuf.0.0, %rdx.shuf.0.1
783   if (!I)
784     return RK_None;
785 
786   assert(I->getType()->isVectorTy() && "Expecting a vector type");
787 
788   Optional<ReductionData> RD = getReductionData(I);
789   if (!RD)
790     return RK_None;
791 
792   ShuffleVectorInst *LS = dyn_cast<ShuffleVectorInst>(RD->LHS);
793   if (!LS && Level)
794     return RK_None;
795   ShuffleVectorInst *RS = dyn_cast<ShuffleVectorInst>(RD->RHS);
796   if (!RS && Level)
797     return RK_None;
798 
799   // On level 0 we can omit one shufflevector instruction.
800   if (!Level && !RS && !LS)
801     return RK_None;
802 
803   // Shuffle inputs must match.
804   Value *NextLevelOpL = LS ? LS->getOperand(0) : nullptr;
805   Value *NextLevelOpR = RS ? RS->getOperand(0) : nullptr;
806   Value *NextLevelOp = nullptr;
807   if (NextLevelOpR && NextLevelOpL) {
808     // If we have two shuffles their operands must match.
809     if (NextLevelOpL != NextLevelOpR)
810       return RK_None;
811 
812     NextLevelOp = NextLevelOpL;
813   } else if (Level == 0 && (NextLevelOpR || NextLevelOpL)) {
814     // On the first level we can omit the shufflevector <0, undef,...>. So the
815     // input to the other shufflevector <1, undef> must match with one of the
816     // inputs to the current binary operation.
817     // Example:
818     //  %NextLevelOpL = shufflevector %R, <1, undef ...>
819     //  %BinOp        = fadd          %NextLevelOpL, %R
820     if (NextLevelOpL && NextLevelOpL != RD->RHS)
821       return RK_None;
822     else if (NextLevelOpR && NextLevelOpR != RD->LHS)
823       return RK_None;
824 
825     NextLevelOp = NextLevelOpL ? RD->RHS : RD->LHS;
826   } else
827     return RK_None;
828 
829   // Check that the next levels binary operation exists and matches with the
830   // current one.
831   if (Level + 1 != NumLevels) {
832     Optional<ReductionData> NextLevelRD =
833         getReductionData(cast<Instruction>(NextLevelOp));
834     if (!NextLevelRD || !RD->hasSameData(*NextLevelRD))
835       return RK_None;
836   }
837 
838   // Shuffle mask for pairwise operation must match.
839   if (matchPairwiseShuffleMask(LS, /*IsLeft=*/true, Level)) {
840     if (!matchPairwiseShuffleMask(RS, /*IsLeft=*/false, Level))
841       return RK_None;
842   } else if (matchPairwiseShuffleMask(RS, /*IsLeft=*/true, Level)) {
843     if (!matchPairwiseShuffleMask(LS, /*IsLeft=*/false, Level))
844       return RK_None;
845   } else {
846     return RK_None;
847   }
848 
849   if (++Level == NumLevels)
850     return RD->Kind;
851 
852   // Match next level.
853   return matchPairwiseReductionAtLevel(cast<Instruction>(NextLevelOp), Level,
854                                        NumLevels);
855 }
856 
857 static ReductionKind matchPairwiseReduction(const ExtractElementInst *ReduxRoot,
858                                             unsigned &Opcode, Type *&Ty) {
859   if (!EnableReduxCost)
860     return RK_None;
861 
862   // Need to extract the first element.
863   ConstantInt *CI = dyn_cast<ConstantInt>(ReduxRoot->getOperand(1));
864   unsigned Idx = ~0u;
865   if (CI)
866     Idx = CI->getZExtValue();
867   if (Idx != 0)
868     return RK_None;
869 
870   auto *RdxStart = dyn_cast<Instruction>(ReduxRoot->getOperand(0));
871   if (!RdxStart)
872     return RK_None;
873   Optional<ReductionData> RD = getReductionData(RdxStart);
874   if (!RD)
875     return RK_None;
876 
877   Type *VecTy = RdxStart->getType();
878   unsigned NumVecElems = VecTy->getVectorNumElements();
879   if (!isPowerOf2_32(NumVecElems))
880     return RK_None;
881 
882   // We look for a sequence of shuffle,shuffle,add triples like the following
883   // that builds a pairwise reduction tree.
884   //
885   //  (X0, X1, X2, X3)
886   //   (X0 + X1, X2 + X3, undef, undef)
887   //    ((X0 + X1) + (X2 + X3), undef, undef, undef)
888   //
889   // %rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef,
890   //       <4 x i32> <i32 0, i32 2 , i32 undef, i32 undef>
891   // %rdx.shuf.0.1 = shufflevector <4 x float> %rdx, <4 x float> undef,
892   //       <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
893   // %bin.rdx.0 = fadd <4 x float> %rdx.shuf.0.0, %rdx.shuf.0.1
894   // %rdx.shuf.1.0 = shufflevector <4 x float> %bin.rdx.0, <4 x float> undef,
895   //       <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
896   // %rdx.shuf.1.1 = shufflevector <4 x float> %bin.rdx.0, <4 x float> undef,
897   //       <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
898   // %bin.rdx8 = fadd <4 x float> %rdx.shuf.1.0, %rdx.shuf.1.1
899   // %r = extractelement <4 x float> %bin.rdx8, i32 0
900   if (matchPairwiseReductionAtLevel(RdxStart, 0, Log2_32(NumVecElems)) ==
901       RK_None)
902     return RK_None;
903 
904   Opcode = RD->Opcode;
905   Ty = VecTy;
906 
907   return RD->Kind;
908 }
909 
910 static std::pair<Value *, ShuffleVectorInst *>
911 getShuffleAndOtherOprd(Value *L, Value *R) {
912   ShuffleVectorInst *S = nullptr;
913 
914   if ((S = dyn_cast<ShuffleVectorInst>(L)))
915     return std::make_pair(R, S);
916 
917   S = dyn_cast<ShuffleVectorInst>(R);
918   return std::make_pair(L, S);
919 }
920 
921 static ReductionKind
922 matchVectorSplittingReduction(const ExtractElementInst *ReduxRoot,
923                               unsigned &Opcode, Type *&Ty) {
924   if (!EnableReduxCost)
925     return RK_None;
926 
927   // Need to extract the first element.
928   ConstantInt *CI = dyn_cast<ConstantInt>(ReduxRoot->getOperand(1));
929   unsigned Idx = ~0u;
930   if (CI)
931     Idx = CI->getZExtValue();
932   if (Idx != 0)
933     return RK_None;
934 
935   auto *RdxStart = dyn_cast<Instruction>(ReduxRoot->getOperand(0));
936   if (!RdxStart)
937     return RK_None;
938   Optional<ReductionData> RD = getReductionData(RdxStart);
939   if (!RD)
940     return RK_None;
941 
942   Type *VecTy = ReduxRoot->getOperand(0)->getType();
943   unsigned NumVecElems = VecTy->getVectorNumElements();
944   if (!isPowerOf2_32(NumVecElems))
945     return RK_None;
946 
947   // We look for a sequence of shuffles and adds like the following matching one
948   // fadd, shuffle vector pair at a time.
949   //
950   // %rdx.shuf = shufflevector <4 x float> %rdx, <4 x float> undef,
951   //                           <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
952   // %bin.rdx = fadd <4 x float> %rdx, %rdx.shuf
953   // %rdx.shuf7 = shufflevector <4 x float> %bin.rdx, <4 x float> undef,
954   //                          <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
955   // %bin.rdx8 = fadd <4 x float> %bin.rdx, %rdx.shuf7
956   // %r = extractelement <4 x float> %bin.rdx8, i32 0
957 
958   unsigned MaskStart = 1;
959   Instruction *RdxOp = RdxStart;
960   SmallVector<int, 32> ShuffleMask(NumVecElems, 0);
961   unsigned NumVecElemsRemain = NumVecElems;
962   while (NumVecElemsRemain - 1) {
963     // Check for the right reduction operation.
964     if (!RdxOp)
965       return RK_None;
966     Optional<ReductionData> RDLevel = getReductionData(RdxOp);
967     if (!RDLevel || !RDLevel->hasSameData(*RD))
968       return RK_None;
969 
970     Value *NextRdxOp;
971     ShuffleVectorInst *Shuffle;
972     std::tie(NextRdxOp, Shuffle) =
973         getShuffleAndOtherOprd(RDLevel->LHS, RDLevel->RHS);
974 
975     // Check the current reduction operation and the shuffle use the same value.
976     if (Shuffle == nullptr)
977       return RK_None;
978     if (Shuffle->getOperand(0) != NextRdxOp)
979       return RK_None;
980 
981     // Check that shuffle masks matches.
982     for (unsigned j = 0; j != MaskStart; ++j)
983       ShuffleMask[j] = MaskStart + j;
984     // Fill the rest of the mask with -1 for undef.
985     std::fill(&ShuffleMask[MaskStart], ShuffleMask.end(), -1);
986 
987     SmallVector<int, 16> Mask = Shuffle->getShuffleMask();
988     if (ShuffleMask != Mask)
989       return RK_None;
990 
991     RdxOp = dyn_cast<Instruction>(NextRdxOp);
992     NumVecElemsRemain /= 2;
993     MaskStart *= 2;
994   }
995 
996   Opcode = RD->Opcode;
997   Ty = VecTy;
998   return RD->Kind;
999 }
1000 
1001 int TargetTransformInfo::getInstructionThroughput(const Instruction *I) const {
1002   switch (I->getOpcode()) {
1003   case Instruction::GetElementPtr:
1004     return getUserCost(I);
1005 
1006   case Instruction::Ret:
1007   case Instruction::PHI:
1008   case Instruction::Br: {
1009     return getCFInstrCost(I->getOpcode());
1010   }
1011   case Instruction::Add:
1012   case Instruction::FAdd:
1013   case Instruction::Sub:
1014   case Instruction::FSub:
1015   case Instruction::Mul:
1016   case Instruction::FMul:
1017   case Instruction::UDiv:
1018   case Instruction::SDiv:
1019   case Instruction::FDiv:
1020   case Instruction::URem:
1021   case Instruction::SRem:
1022   case Instruction::FRem:
1023   case Instruction::Shl:
1024   case Instruction::LShr:
1025   case Instruction::AShr:
1026   case Instruction::And:
1027   case Instruction::Or:
1028   case Instruction::Xor: {
1029     TargetTransformInfo::OperandValueKind Op1VK =
1030       getOperandInfo(I->getOperand(0));
1031     TargetTransformInfo::OperandValueKind Op2VK =
1032       getOperandInfo(I->getOperand(1));
1033     SmallVector<const Value*, 2> Operands(I->operand_values());
1034     return getArithmeticInstrCost(I->getOpcode(), I->getType(), Op1VK,
1035                                        Op2VK, TargetTransformInfo::OP_None,
1036                                        TargetTransformInfo::OP_None,
1037                                        Operands);
1038   }
1039   case Instruction::Select: {
1040     const SelectInst *SI = cast<SelectInst>(I);
1041     Type *CondTy = SI->getCondition()->getType();
1042     return getCmpSelInstrCost(I->getOpcode(), I->getType(), CondTy, I);
1043   }
1044   case Instruction::ICmp:
1045   case Instruction::FCmp: {
1046     Type *ValTy = I->getOperand(0)->getType();
1047     return getCmpSelInstrCost(I->getOpcode(), ValTy, I->getType(), I);
1048   }
1049   case Instruction::Store: {
1050     const StoreInst *SI = cast<StoreInst>(I);
1051     Type *ValTy = SI->getValueOperand()->getType();
1052     return getMemoryOpCost(I->getOpcode(), ValTy,
1053                                 SI->getAlignment(),
1054                                 SI->getPointerAddressSpace(), I);
1055   }
1056   case Instruction::Load: {
1057     const LoadInst *LI = cast<LoadInst>(I);
1058     return getMemoryOpCost(I->getOpcode(), I->getType(),
1059                                 LI->getAlignment(),
1060                                 LI->getPointerAddressSpace(), I);
1061   }
1062   case Instruction::ZExt:
1063   case Instruction::SExt:
1064   case Instruction::FPToUI:
1065   case Instruction::FPToSI:
1066   case Instruction::FPExt:
1067   case Instruction::PtrToInt:
1068   case Instruction::IntToPtr:
1069   case Instruction::SIToFP:
1070   case Instruction::UIToFP:
1071   case Instruction::Trunc:
1072   case Instruction::FPTrunc:
1073   case Instruction::BitCast:
1074   case Instruction::AddrSpaceCast: {
1075     Type *SrcTy = I->getOperand(0)->getType();
1076     return getCastInstrCost(I->getOpcode(), I->getType(), SrcTy, I);
1077   }
1078   case Instruction::ExtractElement: {
1079     const ExtractElementInst * EEI = cast<ExtractElementInst>(I);
1080     ConstantInt *CI = dyn_cast<ConstantInt>(I->getOperand(1));
1081     unsigned Idx = -1;
1082     if (CI)
1083       Idx = CI->getZExtValue();
1084 
1085     // Try to match a reduction sequence (series of shufflevector and vector
1086     // adds followed by a extractelement).
1087     unsigned ReduxOpCode;
1088     Type *ReduxType;
1089 
1090     switch (matchVectorSplittingReduction(EEI, ReduxOpCode, ReduxType)) {
1091     case RK_Arithmetic:
1092       return getArithmeticReductionCost(ReduxOpCode, ReduxType,
1093                                              /*IsPairwiseForm=*/false);
1094     case RK_MinMax:
1095       return getMinMaxReductionCost(
1096           ReduxType, CmpInst::makeCmpResultType(ReduxType),
1097           /*IsPairwiseForm=*/false, /*IsUnsigned=*/false);
1098     case RK_UnsignedMinMax:
1099       return getMinMaxReductionCost(
1100           ReduxType, CmpInst::makeCmpResultType(ReduxType),
1101           /*IsPairwiseForm=*/false, /*IsUnsigned=*/true);
1102     case RK_None:
1103       break;
1104     }
1105 
1106     switch (matchPairwiseReduction(EEI, ReduxOpCode, ReduxType)) {
1107     case RK_Arithmetic:
1108       return getArithmeticReductionCost(ReduxOpCode, ReduxType,
1109                                              /*IsPairwiseForm=*/true);
1110     case RK_MinMax:
1111       return getMinMaxReductionCost(
1112           ReduxType, CmpInst::makeCmpResultType(ReduxType),
1113           /*IsPairwiseForm=*/true, /*IsUnsigned=*/false);
1114     case RK_UnsignedMinMax:
1115       return getMinMaxReductionCost(
1116           ReduxType, CmpInst::makeCmpResultType(ReduxType),
1117           /*IsPairwiseForm=*/true, /*IsUnsigned=*/true);
1118     case RK_None:
1119       break;
1120     }
1121 
1122     return getVectorInstrCost(I->getOpcode(),
1123                                    EEI->getOperand(0)->getType(), Idx);
1124   }
1125   case Instruction::InsertElement: {
1126     const InsertElementInst * IE = cast<InsertElementInst>(I);
1127     ConstantInt *CI = dyn_cast<ConstantInt>(IE->getOperand(2));
1128     unsigned Idx = -1;
1129     if (CI)
1130       Idx = CI->getZExtValue();
1131     return getVectorInstrCost(I->getOpcode(),
1132                                    IE->getType(), Idx);
1133   }
1134   case Instruction::ShuffleVector: {
1135     const ShuffleVectorInst *Shuffle = cast<ShuffleVectorInst>(I);
1136     Type *VecTypOp0 = Shuffle->getOperand(0)->getType();
1137     unsigned NumVecElems = VecTypOp0->getVectorNumElements();
1138     SmallVector<int, 16> Mask = Shuffle->getShuffleMask();
1139 
1140     if (NumVecElems == Mask.size()) {
1141       if (isReverseVectorMask(Mask))
1142         return getShuffleCost(TargetTransformInfo::SK_Reverse, VecTypOp0,
1143                                    0, nullptr);
1144       if (isAlternateVectorMask(Mask))
1145         return getShuffleCost(TargetTransformInfo::SK_Alternate,
1146                                    VecTypOp0, 0, nullptr);
1147 
1148       if (isZeroEltBroadcastVectorMask(Mask))
1149         return getShuffleCost(TargetTransformInfo::SK_Broadcast,
1150                                    VecTypOp0, 0, nullptr);
1151 
1152       if (isSingleSourceVectorMask(Mask))
1153         return getShuffleCost(TargetTransformInfo::SK_PermuteSingleSrc,
1154                                    VecTypOp0, 0, nullptr);
1155 
1156       return getShuffleCost(TargetTransformInfo::SK_PermuteTwoSrc,
1157                                  VecTypOp0, 0, nullptr);
1158     }
1159 
1160     return -1;
1161   }
1162   case Instruction::Call:
1163     if (const IntrinsicInst *II = dyn_cast<IntrinsicInst>(I)) {
1164       SmallVector<Value *, 4> Args(II->arg_operands());
1165 
1166       FastMathFlags FMF;
1167       if (auto *FPMO = dyn_cast<FPMathOperator>(II))
1168         FMF = FPMO->getFastMathFlags();
1169 
1170       return getIntrinsicInstrCost(II->getIntrinsicID(), II->getType(),
1171                                         Args, FMF);
1172     }
1173     return -1;
1174   default:
1175     // We don't have any information on this instruction.
1176     return -1;
1177   }
1178 }
1179 
1180 TargetTransformInfo::Concept::~Concept() {}
1181 
1182 TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
1183 
1184 TargetIRAnalysis::TargetIRAnalysis(
1185     std::function<Result(const Function &)> TTICallback)
1186     : TTICallback(std::move(TTICallback)) {}
1187 
1188 TargetIRAnalysis::Result TargetIRAnalysis::run(const Function &F,
1189                                                FunctionAnalysisManager &) {
1190   return TTICallback(F);
1191 }
1192 
1193 AnalysisKey TargetIRAnalysis::Key;
1194 
1195 TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(const Function &F) {
1196   return Result(F.getParent()->getDataLayout());
1197 }
1198 
1199 // Register the basic pass.
1200 INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
1201                 "Target Transform Information", false, true)
1202 char TargetTransformInfoWrapperPass::ID = 0;
1203 
1204 void TargetTransformInfoWrapperPass::anchor() {}
1205 
1206 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
1207     : ImmutablePass(ID) {
1208   initializeTargetTransformInfoWrapperPassPass(
1209       *PassRegistry::getPassRegistry());
1210 }
1211 
1212 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
1213     TargetIRAnalysis TIRA)
1214     : ImmutablePass(ID), TIRA(std::move(TIRA)) {
1215   initializeTargetTransformInfoWrapperPassPass(
1216       *PassRegistry::getPassRegistry());
1217 }
1218 
1219 TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(const Function &F) {
1220   FunctionAnalysisManager DummyFAM;
1221   TTI = TIRA.run(F, DummyFAM);
1222   return *TTI;
1223 }
1224 
1225 ImmutablePass *
1226 llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
1227   return new TargetTransformInfoWrapperPass(std::move(TIRA));
1228 }
1229