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::isSourceOfDivergence(const Value *V) const {
80   return TTIImpl->isSourceOfDivergence(V);
81 }
82 
83 bool TargetTransformInfo::isLoweredToCall(const Function *F) const {
84   return TTIImpl->isLoweredToCall(F);
85 }
86 
87 void TargetTransformInfo::getUnrollingPreferences(
88     Loop *L, UnrollingPreferences &UP) const {
89   return TTIImpl->getUnrollingPreferences(L, UP);
90 }
91 
92 bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
93   return TTIImpl->isLegalAddImmediate(Imm);
94 }
95 
96 bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
97   return TTIImpl->isLegalICmpImmediate(Imm);
98 }
99 
100 bool TargetTransformInfo::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
101                                                 int64_t BaseOffset,
102                                                 bool HasBaseReg,
103                                                 int64_t Scale,
104                                                 unsigned AddrSpace) const {
105   return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
106                                         Scale, AddrSpace);
107 }
108 
109 bool TargetTransformInfo::isLegalMaskedStore(Type *DataType,
110                                              int Consecutive) const {
111   return TTIImpl->isLegalMaskedStore(DataType, Consecutive);
112 }
113 
114 bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType,
115                                             int Consecutive) const {
116   return TTIImpl->isLegalMaskedLoad(DataType, Consecutive);
117 }
118 
119 int TargetTransformInfo::getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
120                                               int64_t BaseOffset,
121                                               bool HasBaseReg,
122                                               int64_t Scale,
123                                               unsigned AddrSpace) const {
124   return TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
125                                        Scale, AddrSpace);
126 }
127 
128 bool TargetTransformInfo::isTruncateFree(Type *Ty1, Type *Ty2) const {
129   return TTIImpl->isTruncateFree(Ty1, Ty2);
130 }
131 
132 bool TargetTransformInfo::isProfitableToHoist(Instruction *I) const {
133   return TTIImpl->isProfitableToHoist(I);
134 }
135 
136 bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
137   return TTIImpl->isTypeLegal(Ty);
138 }
139 
140 unsigned TargetTransformInfo::getJumpBufAlignment() const {
141   return TTIImpl->getJumpBufAlignment();
142 }
143 
144 unsigned TargetTransformInfo::getJumpBufSize() const {
145   return TTIImpl->getJumpBufSize();
146 }
147 
148 bool TargetTransformInfo::shouldBuildLookupTables() const {
149   return TTIImpl->shouldBuildLookupTables();
150 }
151 
152 bool TargetTransformInfo::enableAggressiveInterleaving(bool LoopHasReductions) const {
153   return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
154 }
155 
156 TargetTransformInfo::PopcntSupportKind
157 TargetTransformInfo::getPopcntSupport(unsigned IntTyWidthInBit) const {
158   return TTIImpl->getPopcntSupport(IntTyWidthInBit);
159 }
160 
161 bool TargetTransformInfo::haveFastSqrt(Type *Ty) const {
162   return TTIImpl->haveFastSqrt(Ty);
163 }
164 
165 unsigned TargetTransformInfo::getFPOpCost(Type *Ty) const {
166   return TTIImpl->getFPOpCost(Ty);
167 }
168 
169 unsigned TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
170   return TTIImpl->getIntImmCost(Imm, Ty);
171 }
172 
173 unsigned TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
174                                             const APInt &Imm, Type *Ty) const {
175   return TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
176 }
177 
178 unsigned TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
179                                             const APInt &Imm, Type *Ty) const {
180   return TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
181 }
182 
183 unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
184   return TTIImpl->getNumberOfRegisters(Vector);
185 }
186 
187 unsigned TargetTransformInfo::getRegisterBitWidth(bool Vector) const {
188   return TTIImpl->getRegisterBitWidth(Vector);
189 }
190 
191 unsigned TargetTransformInfo::getMaxInterleaveFactor(unsigned VF) const {
192   return TTIImpl->getMaxInterleaveFactor(VF);
193 }
194 
195 unsigned TargetTransformInfo::getArithmeticInstrCost(
196     unsigned Opcode, Type *Ty, OperandValueKind Opd1Info,
197     OperandValueKind Opd2Info, OperandValueProperties Opd1PropInfo,
198     OperandValueProperties Opd2PropInfo) const {
199   return TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
200                                          Opd1PropInfo, Opd2PropInfo);
201 }
202 
203 unsigned TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty,
204                                              int Index, Type *SubTp) const {
205   return TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
206 }
207 
208 unsigned TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
209                                                Type *Src) const {
210   return TTIImpl->getCastInstrCost(Opcode, Dst, Src);
211 }
212 
213 unsigned TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
214   return TTIImpl->getCFInstrCost(Opcode);
215 }
216 
217 unsigned TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
218                                                  Type *CondTy) const {
219   return TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy);
220 }
221 
222 unsigned TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
223                                                  unsigned Index) const {
224   return TTIImpl->getVectorInstrCost(Opcode, Val, Index);
225 }
226 
227 unsigned TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
228                                               unsigned Alignment,
229                                               unsigned AddressSpace) const {
230   return TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
231 }
232 
233 unsigned
234 TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
235                                            unsigned Alignment,
236                                            unsigned AddressSpace) const {
237   return TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
238 }
239 
240 unsigned TargetTransformInfo::getInterleavedMemoryOpCost(
241     unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
242     unsigned Alignment, unsigned AddressSpace) const {
243   return TTIImpl->getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
244                                              Alignment, AddressSpace);
245 }
246 
247 unsigned
248 TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
249                                            ArrayRef<Type *> Tys) const {
250   return TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys);
251 }
252 
253 unsigned TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
254                                                ArrayRef<Type *> Tys) const {
255   return TTIImpl->getCallInstrCost(F, RetTy, Tys);
256 }
257 
258 unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
259   return TTIImpl->getNumberOfParts(Tp);
260 }
261 
262 unsigned TargetTransformInfo::getAddressComputationCost(Type *Tp,
263                                                         bool IsComplex) const {
264   return TTIImpl->getAddressComputationCost(Tp, IsComplex);
265 }
266 
267 unsigned TargetTransformInfo::getReductionCost(unsigned Opcode, Type *Ty,
268                                                bool IsPairwiseForm) const {
269   return TTIImpl->getReductionCost(Opcode, Ty, IsPairwiseForm);
270 }
271 
272 unsigned
273 TargetTransformInfo::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) const {
274   return TTIImpl->getCostOfKeepingLiveOverCall(Tys);
275 }
276 
277 bool TargetTransformInfo::getTgtMemIntrinsic(IntrinsicInst *Inst,
278                                              MemIntrinsicInfo &Info) const {
279   return TTIImpl->getTgtMemIntrinsic(Inst, Info);
280 }
281 
282 Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
283     IntrinsicInst *Inst, Type *ExpectedType) const {
284   return TTIImpl->getOrCreateResultFromMemIntrinsic(Inst, ExpectedType);
285 }
286 
287 bool TargetTransformInfo::hasCompatibleFunctionAttributes(
288     const Function *Caller, const Function *Callee) const {
289   return TTIImpl->hasCompatibleFunctionAttributes(Caller, Callee);
290 }
291 
292 TargetTransformInfo::Concept::~Concept() {}
293 
294 TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
295 
296 TargetIRAnalysis::TargetIRAnalysis(
297     std::function<Result(Function &)> TTICallback)
298     : TTICallback(TTICallback) {}
299 
300 TargetIRAnalysis::Result TargetIRAnalysis::run(Function &F) {
301   return TTICallback(F);
302 }
303 
304 char TargetIRAnalysis::PassID;
305 
306 TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(Function &F) {
307   return Result(F.getParent()->getDataLayout());
308 }
309 
310 // Register the basic pass.
311 INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
312                 "Target Transform Information", false, true)
313 char TargetTransformInfoWrapperPass::ID = 0;
314 
315 void TargetTransformInfoWrapperPass::anchor() {}
316 
317 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
318     : ImmutablePass(ID) {
319   initializeTargetTransformInfoWrapperPassPass(
320       *PassRegistry::getPassRegistry());
321 }
322 
323 TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
324     TargetIRAnalysis TIRA)
325     : ImmutablePass(ID), TIRA(std::move(TIRA)) {
326   initializeTargetTransformInfoWrapperPassPass(
327       *PassRegistry::getPassRegistry());
328 }
329 
330 TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(Function &F) {
331   TTI = TIRA.run(F);
332   return *TTI;
333 }
334 
335 ImmutablePass *
336 llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
337   return new TargetTransformInfoWrapperPass(std::move(TIRA));
338 }
339