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/Support/ErrorHandling.h"
20 #include <utility>
21 
22 using namespace llvm;
23 
24 #define DEBUG_TYPE "tti"
25 
26 namespace {
27 /// \brief No-op implementation of the TTI interface using the utility base
28 /// classes.
29 ///
30 /// This is used when no target specific information is available.
31 struct NoTTIImpl : TargetTransformInfoImplCRTPBase<NoTTIImpl> {
32   explicit NoTTIImpl(const DataLayout &DL)
33       : TargetTransformInfoImplCRTPBase<NoTTIImpl>(DL) {}
34 };
35 }
36 
37 TargetTransformInfo::TargetTransformInfo(const DataLayout &DL)
38     : TTIImpl(new Model<NoTTIImpl>(NoTTIImpl(DL))) {}
39 
40 TargetTransformInfo::~TargetTransformInfo() {}
41 
42 TargetTransformInfo::TargetTransformInfo(TargetTransformInfo &&Arg)
43     : TTIImpl(std::move(Arg.TTIImpl)) {}
44 
45 TargetTransformInfo &TargetTransformInfo::operator=(TargetTransformInfo &&RHS) {
46   TTIImpl = std::move(RHS.TTIImpl);
47   return *this;
48 }
49 
50 int TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
51                                           Type *OpTy) const {
52   int Cost = TTIImpl->getOperationCost(Opcode, Ty, OpTy);
53   assert(Cost >= 0 && "TTI should not produce negative costs!");
54   return Cost;
55 }
56 
57 int TargetTransformInfo::getCallCost(FunctionType *FTy, int NumArgs) const {
58   int Cost = TTIImpl->getCallCost(FTy, NumArgs);
59   assert(Cost >= 0 && "TTI should not produce negative costs!");
60   return Cost;
61 }
62 
63 int TargetTransformInfo::getCallCost(const Function *F,
64                                      ArrayRef<const Value *> Arguments) const {
65   int Cost = TTIImpl->getCallCost(F, Arguments);
66   assert(Cost >= 0 && "TTI should not produce negative costs!");
67   return Cost;
68 }
69 
70 unsigned TargetTransformInfo::getInliningThresholdMultiplier() const {
71   return TTIImpl->getInliningThresholdMultiplier();
72 }
73 
74 int TargetTransformInfo::getGEPCost(Type *PointeeType, const Value *Ptr,
75                                     ArrayRef<const Value *> Operands) const {
76   return TTIImpl->getGEPCost(PointeeType, Ptr, Operands);
77 }
78 
79 int TargetTransformInfo::getIntrinsicCost(
80     Intrinsic::ID IID, Type *RetTy, ArrayRef<const Value *> Arguments) const {
81   int Cost = TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
82   assert(Cost >= 0 && "TTI should not produce negative costs!");
83   return Cost;
84 }
85 
86 unsigned
87 TargetTransformInfo::getEstimatedNumberOfCaseClusters(const SwitchInst &SI,
88                                                       unsigned &JTSize) const {
89   return TTIImpl->getEstimatedNumberOfCaseClusters(SI, JTSize);
90 }
91 
92 int TargetTransformInfo::getUserCost(const User *U) const {
93   int Cost = TTIImpl->getUserCost(U);
94   assert(Cost >= 0 && "TTI should not produce negative costs!");
95   return Cost;
96 }
97 
98 bool TargetTransformInfo::hasBranchDivergence() const {
99   return TTIImpl->hasBranchDivergence();
100 }
101 
102 bool TargetTransformInfo::isSourceOfDivergence(const Value *V) const {
103   return TTIImpl->isSourceOfDivergence(V);
104 }
105 
106 unsigned TargetTransformInfo::getFlatAddressSpace() const {
107   return TTIImpl->getFlatAddressSpace();
108 }
109 
110 bool TargetTransformInfo::isLoweredToCall(const Function *F) const {
111   return TTIImpl->isLoweredToCall(F);
112 }
113 
114 void TargetTransformInfo::getUnrollingPreferences(
115     Loop *L, UnrollingPreferences &UP) const {
116   return TTIImpl->getUnrollingPreferences(L, UP);
117 }
118 
119 bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
120   return TTIImpl->isLegalAddImmediate(Imm);
121 }
122 
123 bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
124   return TTIImpl->isLegalICmpImmediate(Imm);
125 }
126 
127 bool TargetTransformInfo::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
128                                                 int64_t BaseOffset,
129                                                 bool HasBaseReg,
130                                                 int64_t Scale,
131                                                 unsigned AddrSpace) const {
132   return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
133                                         Scale, AddrSpace);
134 }
135 
136 bool TargetTransformInfo::isLSRCostLess(LSRCost &C1, LSRCost &C2) const {
137   return TTIImpl->isLSRCostLess(C1, C2);
138 }
139 
140 bool TargetTransformInfo::isLegalMaskedStore(Type *DataType) const {
141   return TTIImpl->isLegalMaskedStore(DataType);
142 }
143 
144 bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType) const {
145   return TTIImpl->isLegalMaskedLoad(DataType);
146 }
147 
148 bool TargetTransformInfo::isLegalMaskedGather(Type *DataType) const {
149   return TTIImpl->isLegalMaskedGather(DataType);
150 }
151 
152 bool TargetTransformInfo::isLegalMaskedScatter(Type *DataType) const {
153   return TTIImpl->isLegalMaskedGather(DataType);
154 }
155 
156 bool TargetTransformInfo::prefersVectorizedAddressing() const {
157   return TTIImpl->prefersVectorizedAddressing();
158 }
159 
160 int TargetTransformInfo::getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
161                                               int64_t BaseOffset,
162                                               bool HasBaseReg,
163                                               int64_t Scale,
164                                               unsigned AddrSpace) const {
165   int Cost = TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
166                                            Scale, AddrSpace);
167   assert(Cost >= 0 && "TTI should not produce negative costs!");
168   return Cost;
169 }
170 
171 bool TargetTransformInfo::isFoldableMemAccessOffset(Instruction *I,
172                                                     int64_t Offset) const {
173   return TTIImpl->isFoldableMemAccessOffset(I, Offset);
174 }
175 
176 bool TargetTransformInfo::isTruncateFree(Type *Ty1, Type *Ty2) const {
177   return TTIImpl->isTruncateFree(Ty1, Ty2);
178 }
179 
180 bool TargetTransformInfo::isProfitableToHoist(Instruction *I) const {
181   return TTIImpl->isProfitableToHoist(I);
182 }
183 
184 bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
185   return TTIImpl->isTypeLegal(Ty);
186 }
187 
188 unsigned TargetTransformInfo::getJumpBufAlignment() const {
189   return TTIImpl->getJumpBufAlignment();
190 }
191 
192 unsigned TargetTransformInfo::getJumpBufSize() const {
193   return TTIImpl->getJumpBufSize();
194 }
195 
196 bool TargetTransformInfo::shouldBuildLookupTables() const {
197   return TTIImpl->shouldBuildLookupTables();
198 }
199 bool TargetTransformInfo::shouldBuildLookupTablesForConstant(Constant *C) const {
200   return TTIImpl->shouldBuildLookupTablesForConstant(C);
201 }
202 
203 unsigned TargetTransformInfo::
204 getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) const {
205   return TTIImpl->getScalarizationOverhead(Ty, Insert, Extract);
206 }
207 
208 unsigned TargetTransformInfo::
209 getOperandsScalarizationOverhead(ArrayRef<const Value *> Args,
210                                  unsigned VF) const {
211   return TTIImpl->getOperandsScalarizationOverhead(Args, VF);
212 }
213 
214 bool TargetTransformInfo::supportsEfficientVectorElementLoadStore() const {
215   return TTIImpl->supportsEfficientVectorElementLoadStore();
216 }
217 
218 bool TargetTransformInfo::enableAggressiveInterleaving(bool LoopHasReductions) const {
219   return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
220 }
221 
222 bool TargetTransformInfo::expandMemCmp(Instruction *I, unsigned &MaxLoadSize) const {
223   return TTIImpl->expandMemCmp(I, MaxLoadSize);
224 }
225 
226 bool TargetTransformInfo::enableInterleavedAccessVectorization() const {
227   return TTIImpl->enableInterleavedAccessVectorization();
228 }
229 
230 bool TargetTransformInfo::isFPVectorizationPotentiallyUnsafe() const {
231   return TTIImpl->isFPVectorizationPotentiallyUnsafe();
232 }
233 
234 bool TargetTransformInfo::allowsMisalignedMemoryAccesses(LLVMContext &Context,
235                                                          unsigned BitWidth,
236                                                          unsigned AddressSpace,
237                                                          unsigned Alignment,
238                                                          bool *Fast) const {
239   return TTIImpl->allowsMisalignedMemoryAccesses(Context, BitWidth, AddressSpace,
240                                                  Alignment, Fast);
241 }
242 
243 TargetTransformInfo::PopcntSupportKind
244 TargetTransformInfo::getPopcntSupport(unsigned IntTyWidthInBit) const {
245   return TTIImpl->getPopcntSupport(IntTyWidthInBit);
246 }
247 
248 bool TargetTransformInfo::haveFastSqrt(Type *Ty) const {
249   return TTIImpl->haveFastSqrt(Ty);
250 }
251 
252 int TargetTransformInfo::getFPOpCost(Type *Ty) const {
253   int Cost = TTIImpl->getFPOpCost(Ty);
254   assert(Cost >= 0 && "TTI should not produce negative costs!");
255   return Cost;
256 }
257 
258 int TargetTransformInfo::getIntImmCodeSizeCost(unsigned Opcode, unsigned Idx,
259                                                const APInt &Imm,
260                                                Type *Ty) const {
261   int Cost = TTIImpl->getIntImmCodeSizeCost(Opcode, Idx, Imm, Ty);
262   assert(Cost >= 0 && "TTI should not produce negative costs!");
263   return Cost;
264 }
265 
266 int TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
267   int Cost = TTIImpl->getIntImmCost(Imm, Ty);
268   assert(Cost >= 0 && "TTI should not produce negative costs!");
269   return Cost;
270 }
271 
272 int TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
273                                        const APInt &Imm, Type *Ty) const {
274   int Cost = TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
275   assert(Cost >= 0 && "TTI should not produce negative costs!");
276   return Cost;
277 }
278 
279 int TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
280                                        const APInt &Imm, Type *Ty) const {
281   int Cost = TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
282   assert(Cost >= 0 && "TTI should not produce negative costs!");
283   return Cost;
284 }
285 
286 unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
287   return TTIImpl->getNumberOfRegisters(Vector);
288 }
289 
290 unsigned TargetTransformInfo::getRegisterBitWidth(bool Vector) const {
291   return TTIImpl->getRegisterBitWidth(Vector);
292 }
293 
294 unsigned TargetTransformInfo::getMinVectorRegisterBitWidth() const {
295   return TTIImpl->getMinVectorRegisterBitWidth();
296 }
297 
298 bool TargetTransformInfo::shouldConsiderAddressTypePromotion(
299     const Instruction &I, bool &AllowPromotionWithoutCommonHeader) const {
300   return TTIImpl->shouldConsiderAddressTypePromotion(
301       I, AllowPromotionWithoutCommonHeader);
302 }
303 
304 unsigned TargetTransformInfo::getCacheLineSize() const {
305   return TTIImpl->getCacheLineSize();
306 }
307 
308 unsigned TargetTransformInfo::getPrefetchDistance() const {
309   return TTIImpl->getPrefetchDistance();
310 }
311 
312 unsigned TargetTransformInfo::getMinPrefetchStride() const {
313   return TTIImpl->getMinPrefetchStride();
314 }
315 
316 unsigned TargetTransformInfo::getMaxPrefetchIterationsAhead() const {
317   return TTIImpl->getMaxPrefetchIterationsAhead();
318 }
319 
320 unsigned TargetTransformInfo::getMaxInterleaveFactor(unsigned VF) const {
321   return TTIImpl->getMaxInterleaveFactor(VF);
322 }
323 
324 int TargetTransformInfo::getArithmeticInstrCost(
325     unsigned Opcode, Type *Ty, OperandValueKind Opd1Info,
326     OperandValueKind Opd2Info, OperandValueProperties Opd1PropInfo,
327     OperandValueProperties Opd2PropInfo,
328     ArrayRef<const Value *> Args) const {
329   int Cost = TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
330                                              Opd1PropInfo, Opd2PropInfo, Args);
331   assert(Cost >= 0 && "TTI should not produce negative costs!");
332   return Cost;
333 }
334 
335 int TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty, int Index,
336                                         Type *SubTp) const {
337   int Cost = TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
338   assert(Cost >= 0 && "TTI should not produce negative costs!");
339   return Cost;
340 }
341 
342 int TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
343                                  Type *Src, const Instruction *I) const {
344   assert ((I == nullptr || I->getOpcode() == Opcode) &&
345           "Opcode should reflect passed instruction.");
346   int Cost = TTIImpl->getCastInstrCost(Opcode, Dst, Src, I);
347   assert(Cost >= 0 && "TTI should not produce negative costs!");
348   return Cost;
349 }
350 
351 int TargetTransformInfo::getExtractWithExtendCost(unsigned Opcode, Type *Dst,
352                                                   VectorType *VecTy,
353                                                   unsigned Index) const {
354   int Cost = TTIImpl->getExtractWithExtendCost(Opcode, Dst, VecTy, Index);
355   assert(Cost >= 0 && "TTI should not produce negative costs!");
356   return Cost;
357 }
358 
359 int TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
360   int Cost = TTIImpl->getCFInstrCost(Opcode);
361   assert(Cost >= 0 && "TTI should not produce negative costs!");
362   return Cost;
363 }
364 
365 int TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
366                                  Type *CondTy, const Instruction *I) const {
367   assert ((I == nullptr || I->getOpcode() == Opcode) &&
368           "Opcode should reflect passed instruction.");
369   int Cost = TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy, I);
370   assert(Cost >= 0 && "TTI should not produce negative costs!");
371   return Cost;
372 }
373 
374 int TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
375                                             unsigned Index) const {
376   int Cost = TTIImpl->getVectorInstrCost(Opcode, Val, Index);
377   assert(Cost >= 0 && "TTI should not produce negative costs!");
378   return Cost;
379 }
380 
381 int TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
382                                          unsigned Alignment,
383                                          unsigned AddressSpace,
384                                          const Instruction *I) const {
385   assert ((I == nullptr || I->getOpcode() == Opcode) &&
386           "Opcode should reflect passed instruction.");
387   int Cost = TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace, I);
388   assert(Cost >= 0 && "TTI should not produce negative costs!");
389   return Cost;
390 }
391 
392 int TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
393                                                unsigned Alignment,
394                                                unsigned AddressSpace) const {
395   int Cost =
396       TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
397   assert(Cost >= 0 && "TTI should not produce negative costs!");
398   return Cost;
399 }
400 
401 int TargetTransformInfo::getGatherScatterOpCost(unsigned Opcode, Type *DataTy,
402                                                 Value *Ptr, bool VariableMask,
403                                                 unsigned Alignment) const {
404   int Cost = TTIImpl->getGatherScatterOpCost(Opcode, DataTy, Ptr, VariableMask,
405                                              Alignment);
406   assert(Cost >= 0 && "TTI should not produce negative costs!");
407   return Cost;
408 }
409 
410 int TargetTransformInfo::getInterleavedMemoryOpCost(
411     unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
412     unsigned Alignment, unsigned AddressSpace) const {
413   int Cost = TTIImpl->getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
414                                                  Alignment, AddressSpace);
415   assert(Cost >= 0 && "TTI should not produce negative costs!");
416   return Cost;
417 }
418 
419 int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
420                                     ArrayRef<Type *> Tys, FastMathFlags FMF,
421                                     unsigned ScalarizationCostPassed) const {
422   int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys, FMF,
423                                             ScalarizationCostPassed);
424   assert(Cost >= 0 && "TTI should not produce negative costs!");
425   return Cost;
426 }
427 
428 int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
429            ArrayRef<Value *> Args, FastMathFlags FMF, unsigned VF) const {
430   int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Args, FMF, VF);
431   assert(Cost >= 0 && "TTI should not produce negative costs!");
432   return Cost;
433 }
434 
435 int TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
436                                           ArrayRef<Type *> Tys) const {
437   int Cost = TTIImpl->getCallInstrCost(F, RetTy, Tys);
438   assert(Cost >= 0 && "TTI should not produce negative costs!");
439   return Cost;
440 }
441 
442 unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
443   return TTIImpl->getNumberOfParts(Tp);
444 }
445 
446 int TargetTransformInfo::getAddressComputationCost(Type *Tp,
447                                                    ScalarEvolution *SE,
448                                                    const SCEV *Ptr) const {
449   int Cost = TTIImpl->getAddressComputationCost(Tp, SE, Ptr);
450   assert(Cost >= 0 && "TTI should not produce negative costs!");
451   return Cost;
452 }
453 
454 int TargetTransformInfo::getReductionCost(unsigned Opcode, Type *Ty,
455                                           bool IsPairwiseForm) const {
456   int Cost = TTIImpl->getReductionCost(Opcode, Ty, IsPairwiseForm);
457   assert(Cost >= 0 && "TTI should not produce negative costs!");
458   return Cost;
459 }
460 
461 unsigned
462 TargetTransformInfo::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) const {
463   return TTIImpl->getCostOfKeepingLiveOverCall(Tys);
464 }
465 
466 bool TargetTransformInfo::getTgtMemIntrinsic(IntrinsicInst *Inst,
467                                              MemIntrinsicInfo &Info) const {
468   return TTIImpl->getTgtMemIntrinsic(Inst, Info);
469 }
470 
471 unsigned TargetTransformInfo::getAtomicMemIntrinsicMaxElementSize() const {
472   return TTIImpl->getAtomicMemIntrinsicMaxElementSize();
473 }
474 
475 Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
476     IntrinsicInst *Inst, Type *ExpectedType) const {
477   return TTIImpl->getOrCreateResultFromMemIntrinsic(Inst, ExpectedType);
478 }
479 
480 bool TargetTransformInfo::areInlineCompatible(const Function *Caller,
481                                               const Function *Callee) const {
482   return TTIImpl->areInlineCompatible(Caller, Callee);
483 }
484 
485 unsigned TargetTransformInfo::getLoadStoreVecRegBitWidth(unsigned AS) const {
486   return TTIImpl->getLoadStoreVecRegBitWidth(AS);
487 }
488 
489 bool TargetTransformInfo::isLegalToVectorizeLoad(LoadInst *LI) const {
490   return TTIImpl->isLegalToVectorizeLoad(LI);
491 }
492 
493 bool TargetTransformInfo::isLegalToVectorizeStore(StoreInst *SI) const {
494   return TTIImpl->isLegalToVectorizeStore(SI);
495 }
496 
497 bool TargetTransformInfo::isLegalToVectorizeLoadChain(
498     unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
499   return TTIImpl->isLegalToVectorizeLoadChain(ChainSizeInBytes, Alignment,
500                                               AddrSpace);
501 }
502 
503 bool TargetTransformInfo::isLegalToVectorizeStoreChain(
504     unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
505   return TTIImpl->isLegalToVectorizeStoreChain(ChainSizeInBytes, Alignment,
506                                                AddrSpace);
507 }
508 
509 unsigned TargetTransformInfo::getLoadVectorFactor(unsigned VF,
510                                                   unsigned LoadSize,
511                                                   unsigned ChainSizeInBytes,
512                                                   VectorType *VecTy) const {
513   return TTIImpl->getLoadVectorFactor(VF, LoadSize, ChainSizeInBytes, VecTy);
514 }
515 
516 unsigned TargetTransformInfo::getStoreVectorFactor(unsigned VF,
517                                                    unsigned StoreSize,
518                                                    unsigned ChainSizeInBytes,
519                                                    VectorType *VecTy) const {
520   return TTIImpl->getStoreVectorFactor(VF, StoreSize, ChainSizeInBytes, VecTy);
521 }
522 
523 bool TargetTransformInfo::useReductionIntrinsic(unsigned Opcode,
524                                                 Type *Ty, ReductionFlags Flags) const {
525   return TTIImpl->useReductionIntrinsic(Opcode, Ty, Flags);
526 }
527 
528 bool TargetTransformInfo::shouldExpandReduction(const IntrinsicInst *II) const {
529   return TTIImpl->shouldExpandReduction(II);
530 }
531 
532 TargetTransformInfo::Concept::~Concept() {}
533 
534 TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
535 
536 TargetIRAnalysis::TargetIRAnalysis(
537     std::function<Result(const Function &)> TTICallback)
538     : TTICallback(std::move(TTICallback)) {}
539 
540 TargetIRAnalysis::Result TargetIRAnalysis::run(const Function &F,
541                                                FunctionAnalysisManager &) {
542   return TTICallback(F);
543 }
544 
545 AnalysisKey TargetIRAnalysis::Key;
546 
547 TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(const Function &F) {
548   return Result(F.getParent()->getDataLayout());
549 }
550 
551 // Register the basic pass.
552 INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
553                 "Target Transform Information", false, true)
554 char TargetTransformInfoWrapperPass::ID = 0;
555 
556 void TargetTransformInfoWrapperPass::anchor() {}
557 
558 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
559     : ImmutablePass(ID) {
560   initializeTargetTransformInfoWrapperPassPass(
561       *PassRegistry::getPassRegistry());
562 }
563 
564 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
565     TargetIRAnalysis TIRA)
566     : ImmutablePass(ID), TIRA(std::move(TIRA)) {
567   initializeTargetTransformInfoWrapperPassPass(
568       *PassRegistry::getPassRegistry());
569 }
570 
571 TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(const Function &F) {
572   FunctionAnalysisManager DummyFAM;
573   TTI = TIRA.run(F, DummyFAM);
574   return *TTI;
575 }
576 
577 ImmutablePass *
578 llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
579   return new TargetTransformInfoWrapperPass(std::move(TIRA));
580 }
581