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 
21 using namespace llvm;
22 
23 #define DEBUG_TYPE "tti"
24 
25 namespace {
26 /// \brief No-op implementation of the TTI interface using the utility base
27 /// classes.
28 ///
29 /// This is used when no target specific information is available.
30 struct NoTTIImpl : TargetTransformInfoImplCRTPBase<NoTTIImpl> {
31   explicit NoTTIImpl(const DataLayout &DL)
32       : TargetTransformInfoImplCRTPBase<NoTTIImpl>(DL) {}
33 };
34 }
35 
36 TargetTransformInfo::TargetTransformInfo(const DataLayout &DL)
37     : TTIImpl(new Model<NoTTIImpl>(NoTTIImpl(DL))) {}
38 
39 TargetTransformInfo::~TargetTransformInfo() {}
40 
41 TargetTransformInfo::TargetTransformInfo(TargetTransformInfo &&Arg)
42     : TTIImpl(std::move(Arg.TTIImpl)) {}
43 
44 TargetTransformInfo &TargetTransformInfo::operator=(TargetTransformInfo &&RHS) {
45   TTIImpl = std::move(RHS.TTIImpl);
46   return *this;
47 }
48 
49 int TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
50                                           Type *OpTy) const {
51   int Cost = TTIImpl->getOperationCost(Opcode, Ty, OpTy);
52   assert(Cost >= 0 && "TTI should not produce negative costs!");
53   return Cost;
54 }
55 
56 int TargetTransformInfo::getCallCost(FunctionType *FTy, int NumArgs) const {
57   int Cost = TTIImpl->getCallCost(FTy, NumArgs);
58   assert(Cost >= 0 && "TTI should not produce negative costs!");
59   return Cost;
60 }
61 
62 int TargetTransformInfo::getCallCost(const Function *F,
63                                      ArrayRef<const Value *> Arguments) const {
64   int Cost = TTIImpl->getCallCost(F, Arguments);
65   assert(Cost >= 0 && "TTI should not produce negative costs!");
66   return Cost;
67 }
68 
69 int TargetTransformInfo::getIntrinsicCost(
70     Intrinsic::ID IID, Type *RetTy, ArrayRef<const Value *> Arguments) const {
71   int Cost = TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
72   assert(Cost >= 0 && "TTI should not produce negative costs!");
73   return Cost;
74 }
75 
76 int TargetTransformInfo::getUserCost(const User *U) const {
77   int Cost = TTIImpl->getUserCost(U);
78   assert(Cost >= 0 && "TTI should not produce negative costs!");
79   return Cost;
80 }
81 
82 bool TargetTransformInfo::hasBranchDivergence() const {
83   return TTIImpl->hasBranchDivergence();
84 }
85 
86 bool TargetTransformInfo::isSourceOfDivergence(const Value *V) const {
87   return TTIImpl->isSourceOfDivergence(V);
88 }
89 
90 bool TargetTransformInfo::isLoweredToCall(const Function *F) const {
91   return TTIImpl->isLoweredToCall(F);
92 }
93 
94 void TargetTransformInfo::getUnrollingPreferences(
95     Loop *L, UnrollingPreferences &UP) const {
96   return TTIImpl->getUnrollingPreferences(L, UP);
97 }
98 
99 bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
100   return TTIImpl->isLegalAddImmediate(Imm);
101 }
102 
103 bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
104   return TTIImpl->isLegalICmpImmediate(Imm);
105 }
106 
107 bool TargetTransformInfo::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
108                                                 int64_t BaseOffset,
109                                                 bool HasBaseReg,
110                                                 int64_t Scale,
111                                                 unsigned AddrSpace) const {
112   return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
113                                         Scale, AddrSpace);
114 }
115 
116 bool TargetTransformInfo::isLegalMaskedStore(Type *DataType,
117                                              int Consecutive) const {
118   return TTIImpl->isLegalMaskedStore(DataType, Consecutive);
119 }
120 
121 bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType,
122                                             int Consecutive) const {
123   return TTIImpl->isLegalMaskedLoad(DataType, Consecutive);
124 }
125 
126 int TargetTransformInfo::getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
127                                               int64_t BaseOffset,
128                                               bool HasBaseReg,
129                                               int64_t Scale,
130                                               unsigned AddrSpace) const {
131   int Cost = TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
132                                            Scale, AddrSpace);
133   assert(Cost >= 0 && "TTI should not produce negative costs!");
134   return Cost;
135 }
136 
137 bool TargetTransformInfo::isTruncateFree(Type *Ty1, Type *Ty2) const {
138   return TTIImpl->isTruncateFree(Ty1, Ty2);
139 }
140 
141 bool TargetTransformInfo::isZExtFree(Type *Ty1, Type *Ty2) const {
142   return TTIImpl->isZExtFree(Ty1, Ty2);
143 }
144 
145 bool TargetTransformInfo::isProfitableToHoist(Instruction *I) const {
146   return TTIImpl->isProfitableToHoist(I);
147 }
148 
149 bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
150   return TTIImpl->isTypeLegal(Ty);
151 }
152 
153 unsigned TargetTransformInfo::getJumpBufAlignment() const {
154   return TTIImpl->getJumpBufAlignment();
155 }
156 
157 unsigned TargetTransformInfo::getJumpBufSize() const {
158   return TTIImpl->getJumpBufSize();
159 }
160 
161 bool TargetTransformInfo::shouldBuildLookupTables() const {
162   return TTIImpl->shouldBuildLookupTables();
163 }
164 
165 bool TargetTransformInfo::enableAggressiveInterleaving(bool LoopHasReductions) const {
166   return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
167 }
168 
169 bool TargetTransformInfo::enableInterleavedAccessVectorization() const {
170   return TTIImpl->enableInterleavedAccessVectorization();
171 }
172 
173 TargetTransformInfo::PopcntSupportKind
174 TargetTransformInfo::getPopcntSupport(unsigned IntTyWidthInBit) const {
175   return TTIImpl->getPopcntSupport(IntTyWidthInBit);
176 }
177 
178 bool TargetTransformInfo::haveFastSqrt(Type *Ty) const {
179   return TTIImpl->haveFastSqrt(Ty);
180 }
181 
182 int TargetTransformInfo::getFPOpCost(Type *Ty) const {
183   int Cost = TTIImpl->getFPOpCost(Ty);
184   assert(Cost >= 0 && "TTI should not produce negative costs!");
185   return Cost;
186 }
187 
188 int TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
189   int Cost = TTIImpl->getIntImmCost(Imm, Ty);
190   assert(Cost >= 0 && "TTI should not produce negative costs!");
191   return Cost;
192 }
193 
194 int TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
195                                        const APInt &Imm, Type *Ty) const {
196   int Cost = TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
197   assert(Cost >= 0 && "TTI should not produce negative costs!");
198   return Cost;
199 }
200 
201 int TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
202                                        const APInt &Imm, Type *Ty) const {
203   int Cost = TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
204   assert(Cost >= 0 && "TTI should not produce negative costs!");
205   return Cost;
206 }
207 
208 unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
209   return TTIImpl->getNumberOfRegisters(Vector);
210 }
211 
212 unsigned TargetTransformInfo::getRegisterBitWidth(bool Vector) const {
213   return TTIImpl->getRegisterBitWidth(Vector);
214 }
215 
216 unsigned TargetTransformInfo::getMaxInterleaveFactor(unsigned VF) const {
217   return TTIImpl->getMaxInterleaveFactor(VF);
218 }
219 
220 int TargetTransformInfo::getArithmeticInstrCost(
221     unsigned Opcode, Type *Ty, OperandValueKind Opd1Info,
222     OperandValueKind Opd2Info, OperandValueProperties Opd1PropInfo,
223     OperandValueProperties Opd2PropInfo) const {
224   int Cost = TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
225                                              Opd1PropInfo, Opd2PropInfo);
226   assert(Cost >= 0 && "TTI should not produce negative costs!");
227   return Cost;
228 }
229 
230 int TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty, int Index,
231                                         Type *SubTp) const {
232   int Cost = TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
233   assert(Cost >= 0 && "TTI should not produce negative costs!");
234   return Cost;
235 }
236 
237 int TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
238                                           Type *Src) const {
239   int Cost = TTIImpl->getCastInstrCost(Opcode, Dst, Src);
240   assert(Cost >= 0 && "TTI should not produce negative costs!");
241   return Cost;
242 }
243 
244 int TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
245   int Cost = TTIImpl->getCFInstrCost(Opcode);
246   assert(Cost >= 0 && "TTI should not produce negative costs!");
247   return Cost;
248 }
249 
250 int TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
251                                             Type *CondTy) const {
252   int Cost = TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy);
253   assert(Cost >= 0 && "TTI should not produce negative costs!");
254   return Cost;
255 }
256 
257 int TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
258                                             unsigned Index) const {
259   int Cost = TTIImpl->getVectorInstrCost(Opcode, Val, Index);
260   assert(Cost >= 0 && "TTI should not produce negative costs!");
261   return Cost;
262 }
263 
264 int TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
265                                          unsigned Alignment,
266                                          unsigned AddressSpace) const {
267   int Cost = TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
268   assert(Cost >= 0 && "TTI should not produce negative costs!");
269   return Cost;
270 }
271 
272 int TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
273                                                unsigned Alignment,
274                                                unsigned AddressSpace) const {
275   int Cost =
276       TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
277   assert(Cost >= 0 && "TTI should not produce negative costs!");
278   return Cost;
279 }
280 
281 int TargetTransformInfo::getInterleavedMemoryOpCost(
282     unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
283     unsigned Alignment, unsigned AddressSpace) const {
284   int Cost = TTIImpl->getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
285                                                  Alignment, AddressSpace);
286   assert(Cost >= 0 && "TTI should not produce negative costs!");
287   return Cost;
288 }
289 
290 int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
291                                                ArrayRef<Type *> Tys) const {
292   int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys);
293   assert(Cost >= 0 && "TTI should not produce negative costs!");
294   return Cost;
295 }
296 
297 int TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
298                                           ArrayRef<Type *> Tys) const {
299   int Cost = TTIImpl->getCallInstrCost(F, RetTy, Tys);
300   assert(Cost >= 0 && "TTI should not produce negative costs!");
301   return Cost;
302 }
303 
304 unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
305   return TTIImpl->getNumberOfParts(Tp);
306 }
307 
308 int TargetTransformInfo::getAddressComputationCost(Type *Tp,
309                                                    bool IsComplex) const {
310   int Cost = TTIImpl->getAddressComputationCost(Tp, IsComplex);
311   assert(Cost >= 0 && "TTI should not produce negative costs!");
312   return Cost;
313 }
314 
315 int TargetTransformInfo::getReductionCost(unsigned Opcode, Type *Ty,
316                                           bool IsPairwiseForm) const {
317   int Cost = TTIImpl->getReductionCost(Opcode, Ty, IsPairwiseForm);
318   assert(Cost >= 0 && "TTI should not produce negative costs!");
319   return Cost;
320 }
321 
322 unsigned
323 TargetTransformInfo::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) const {
324   return TTIImpl->getCostOfKeepingLiveOverCall(Tys);
325 }
326 
327 bool TargetTransformInfo::getTgtMemIntrinsic(IntrinsicInst *Inst,
328                                              MemIntrinsicInfo &Info) const {
329   return TTIImpl->getTgtMemIntrinsic(Inst, Info);
330 }
331 
332 Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
333     IntrinsicInst *Inst, Type *ExpectedType) const {
334   return TTIImpl->getOrCreateResultFromMemIntrinsic(Inst, ExpectedType);
335 }
336 
337 bool TargetTransformInfo::areInlineCompatible(const Function *Caller,
338                                               const Function *Callee) const {
339   return TTIImpl->areInlineCompatible(Caller, Callee);
340 }
341 
342 TargetTransformInfo::Concept::~Concept() {}
343 
344 TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
345 
346 TargetIRAnalysis::TargetIRAnalysis(
347     std::function<Result(const Function &)> TTICallback)
348     : TTICallback(TTICallback) {}
349 
350 TargetIRAnalysis::Result TargetIRAnalysis::run(const Function &F) {
351   return TTICallback(F);
352 }
353 
354 char TargetIRAnalysis::PassID;
355 
356 TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(const Function &F) {
357   return Result(F.getParent()->getDataLayout());
358 }
359 
360 // Register the basic pass.
361 INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
362                 "Target Transform Information", false, true)
363 char TargetTransformInfoWrapperPass::ID = 0;
364 
365 void TargetTransformInfoWrapperPass::anchor() {}
366 
367 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
368     : ImmutablePass(ID) {
369   initializeTargetTransformInfoWrapperPassPass(
370       *PassRegistry::getPassRegistry());
371 }
372 
373 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
374     TargetIRAnalysis TIRA)
375     : ImmutablePass(ID), TIRA(std::move(TIRA)) {
376   initializeTargetTransformInfoWrapperPassPass(
377       *PassRegistry::getPassRegistry());
378 }
379 
380 TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(const Function &F) {
381   TTI = TIRA.run(F);
382   return *TTI;
383 }
384 
385 ImmutablePass *
386 llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
387   return new TargetTransformInfoWrapperPass(std::move(TIRA));
388 }
389