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 unsigned TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
50                                                Type *OpTy) const {
51   return TTIImpl->getOperationCost(Opcode, Ty, OpTy);
52 }
53 
54 unsigned TargetTransformInfo::getCallCost(FunctionType *FTy,
55                                           int NumArgs) const {
56   return TTIImpl->getCallCost(FTy, NumArgs);
57 }
58 
59 unsigned
60 TargetTransformInfo::getCallCost(const Function *F,
61                                  ArrayRef<const Value *> Arguments) const {
62   return TTIImpl->getCallCost(F, Arguments);
63 }
64 
65 unsigned
66 TargetTransformInfo::getIntrinsicCost(Intrinsic::ID IID, Type *RetTy,
67                                       ArrayRef<const Value *> Arguments) const {
68   return TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
69 }
70 
71 unsigned TargetTransformInfo::getUserCost(const User *U) const {
72   return TTIImpl->getUserCost(U);
73 }
74 
75 bool TargetTransformInfo::hasBranchDivergence() const {
76   return TTIImpl->hasBranchDivergence();
77 }
78 
79 bool TargetTransformInfo::isLoweredToCall(const Function *F) const {
80   return TTIImpl->isLoweredToCall(F);
81 }
82 
83 void TargetTransformInfo::getUnrollingPreferences(
84     Loop *L, UnrollingPreferences &UP) const {
85   return TTIImpl->getUnrollingPreferences(L, UP);
86 }
87 
88 bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
89   return TTIImpl->isLegalAddImmediate(Imm);
90 }
91 
92 bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
93   return TTIImpl->isLegalICmpImmediate(Imm);
94 }
95 
96 bool TargetTransformInfo::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
97                                                 int64_t BaseOffset,
98                                                 bool HasBaseReg,
99                                                 int64_t Scale) const {
100   return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
101                                         Scale);
102 }
103 
104 bool TargetTransformInfo::isLegalMaskedStore(Type *DataType,
105                                              int Consecutive) const {
106   return TTIImpl->isLegalMaskedStore(DataType, Consecutive);
107 }
108 
109 bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType,
110                                             int Consecutive) const {
111   return TTIImpl->isLegalMaskedLoad(DataType, Consecutive);
112 }
113 
114 int TargetTransformInfo::getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
115                                               int64_t BaseOffset,
116                                               bool HasBaseReg,
117                                               int64_t Scale) const {
118   return TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
119                                        Scale);
120 }
121 
122 bool TargetTransformInfo::isTruncateFree(Type *Ty1, Type *Ty2) const {
123   return TTIImpl->isTruncateFree(Ty1, Ty2);
124 }
125 
126 bool TargetTransformInfo::isProfitableToHoist(Instruction *I) const {
127   return TTIImpl->isProfitableToHoist(I);
128 }
129 
130 bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
131   return TTIImpl->isTypeLegal(Ty);
132 }
133 
134 unsigned TargetTransformInfo::getJumpBufAlignment() const {
135   return TTIImpl->getJumpBufAlignment();
136 }
137 
138 unsigned TargetTransformInfo::getJumpBufSize() const {
139   return TTIImpl->getJumpBufSize();
140 }
141 
142 bool TargetTransformInfo::shouldBuildLookupTables() const {
143   return TTIImpl->shouldBuildLookupTables();
144 }
145 
146 bool TargetTransformInfo::enableAggressiveInterleaving(bool LoopHasReductions) const {
147   return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
148 }
149 
150 TargetTransformInfo::PopcntSupportKind
151 TargetTransformInfo::getPopcntSupport(unsigned IntTyWidthInBit) const {
152   return TTIImpl->getPopcntSupport(IntTyWidthInBit);
153 }
154 
155 bool TargetTransformInfo::haveFastSqrt(Type *Ty) const {
156   return TTIImpl->haveFastSqrt(Ty);
157 }
158 
159 unsigned TargetTransformInfo::getFPOpCost(Type *Ty) const {
160   return TTIImpl->getFPOpCost(Ty);
161 }
162 
163 unsigned TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
164   return TTIImpl->getIntImmCost(Imm, Ty);
165 }
166 
167 unsigned TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
168                                             const APInt &Imm, Type *Ty) const {
169   return TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
170 }
171 
172 unsigned TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
173                                             const APInt &Imm, Type *Ty) const {
174   return TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
175 }
176 
177 unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
178   return TTIImpl->getNumberOfRegisters(Vector);
179 }
180 
181 unsigned TargetTransformInfo::getRegisterBitWidth(bool Vector) const {
182   return TTIImpl->getRegisterBitWidth(Vector);
183 }
184 
185 unsigned TargetTransformInfo::getMaxInterleaveFactor() const {
186   return TTIImpl->getMaxInterleaveFactor();
187 }
188 
189 unsigned TargetTransformInfo::getArithmeticInstrCost(
190     unsigned Opcode, Type *Ty, OperandValueKind Opd1Info,
191     OperandValueKind Opd2Info, OperandValueProperties Opd1PropInfo,
192     OperandValueProperties Opd2PropInfo) const {
193   return TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
194                                          Opd1PropInfo, Opd2PropInfo);
195 }
196 
197 unsigned TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty,
198                                              int Index, Type *SubTp) const {
199   return TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
200 }
201 
202 unsigned TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
203                                                Type *Src) const {
204   return TTIImpl->getCastInstrCost(Opcode, Dst, Src);
205 }
206 
207 unsigned TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
208   return TTIImpl->getCFInstrCost(Opcode);
209 }
210 
211 unsigned TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
212                                                  Type *CondTy) const {
213   return TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy);
214 }
215 
216 unsigned TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
217                                                  unsigned Index) const {
218   return TTIImpl->getVectorInstrCost(Opcode, Val, Index);
219 }
220 
221 unsigned TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
222                                               unsigned Alignment,
223                                               unsigned AddressSpace) const {
224   return TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
225 }
226 
227 unsigned
228 TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
229                                            unsigned Alignment,
230                                            unsigned AddressSpace) const {
231   return TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
232 }
233 
234 unsigned
235 TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
236                                            ArrayRef<Type *> Tys) const {
237   return TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys);
238 }
239 
240 unsigned TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
241                                                ArrayRef<Type *> Tys) const {
242   return TTIImpl->getCallInstrCost(F, RetTy, Tys);
243 }
244 
245 unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
246   return TTIImpl->getNumberOfParts(Tp);
247 }
248 
249 unsigned TargetTransformInfo::getAddressComputationCost(Type *Tp,
250                                                         bool IsComplex) const {
251   return TTIImpl->getAddressComputationCost(Tp, IsComplex);
252 }
253 
254 unsigned TargetTransformInfo::getReductionCost(unsigned Opcode, Type *Ty,
255                                                bool IsPairwiseForm) const {
256   return TTIImpl->getReductionCost(Opcode, Ty, IsPairwiseForm);
257 }
258 
259 unsigned
260 TargetTransformInfo::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) const {
261   return TTIImpl->getCostOfKeepingLiveOverCall(Tys);
262 }
263 
264 bool TargetTransformInfo::getTgtMemIntrinsic(IntrinsicInst *Inst,
265                                              MemIntrinsicInfo &Info) const {
266   return TTIImpl->getTgtMemIntrinsic(Inst, Info);
267 }
268 
269 Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
270     IntrinsicInst *Inst, Type *ExpectedType) const {
271   return TTIImpl->getOrCreateResultFromMemIntrinsic(Inst, ExpectedType);
272 }
273 
274 TargetTransformInfo::Concept::~Concept() {}
275 
276 TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
277 
278 TargetIRAnalysis::TargetIRAnalysis(
279     std::function<Result(Function &)> TTICallback)
280     : TTICallback(TTICallback) {}
281 
282 TargetIRAnalysis::Result TargetIRAnalysis::run(Function &F) {
283   return TTICallback(F);
284 }
285 
286 char TargetIRAnalysis::PassID;
287 
288 TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(Function &F) {
289   return Result(&F.getParent()->getDataLayout());
290 }
291 
292 // Register the basic pass.
293 INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
294                 "Target Transform Information", false, true)
295 char TargetTransformInfoWrapperPass::ID = 0;
296 
297 void TargetTransformInfoWrapperPass::anchor() {}
298 
299 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
300     : ImmutablePass(ID) {
301   initializeTargetTransformInfoWrapperPassPass(
302       *PassRegistry::getPassRegistry());
303 }
304 
305 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
306     TargetIRAnalysis TIRA)
307     : ImmutablePass(ID), TIRA(std::move(TIRA)) {
308   initializeTargetTransformInfoWrapperPassPass(
309       *PassRegistry::getPassRegistry());
310 }
311 
312 TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(Function &F) {
313   TTI = TIRA.run(F);
314   return *TTI;
315 }
316 
317 ImmutablePass *
318 llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
319   return new TargetTransformInfoWrapperPass(std::move(TIRA));
320 }
321