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70ed78e504
The changes are a result of discussion of https://reviews.llvm.org/D33685. It solves the following problem: 1. We can inform getGEPCost about simplified indices to help it with calculating the cost. But getGEPCost does not take into account the context which GEPs are used in. 2. We have getUserCost which can take the context into account but we cannot inform about simplified indices. With the changes getUserCost will have access to additional information as getGEPCost has. The one parameter getUserCost is also provided. Differential Revision: https://reviews.llvm.org/D34057 llvm-svn: 306674
586 lines
21 KiB
C++
586 lines
21 KiB
C++
//===- llvm/Analysis/TargetTransformInfo.cpp ------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/Analysis/TargetTransformInfoImpl.h"
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#include "llvm/IR/CallSite.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/Operator.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <utility>
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using namespace llvm;
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#define DEBUG_TYPE "tti"
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namespace {
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/// \brief No-op implementation of the TTI interface using the utility base
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/// classes.
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///
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/// This is used when no target specific information is available.
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struct NoTTIImpl : TargetTransformInfoImplCRTPBase<NoTTIImpl> {
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explicit NoTTIImpl(const DataLayout &DL)
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: TargetTransformInfoImplCRTPBase<NoTTIImpl>(DL) {}
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};
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}
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TargetTransformInfo::TargetTransformInfo(const DataLayout &DL)
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: TTIImpl(new Model<NoTTIImpl>(NoTTIImpl(DL))) {}
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TargetTransformInfo::~TargetTransformInfo() {}
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TargetTransformInfo::TargetTransformInfo(TargetTransformInfo &&Arg)
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: TTIImpl(std::move(Arg.TTIImpl)) {}
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TargetTransformInfo &TargetTransformInfo::operator=(TargetTransformInfo &&RHS) {
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TTIImpl = std::move(RHS.TTIImpl);
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return *this;
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}
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int TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
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Type *OpTy) const {
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int Cost = TTIImpl->getOperationCost(Opcode, Ty, OpTy);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getCallCost(FunctionType *FTy, int NumArgs) const {
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int Cost = TTIImpl->getCallCost(FTy, NumArgs);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getCallCost(const Function *F,
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ArrayRef<const Value *> Arguments) const {
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int Cost = TTIImpl->getCallCost(F, Arguments);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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unsigned TargetTransformInfo::getInliningThresholdMultiplier() const {
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return TTIImpl->getInliningThresholdMultiplier();
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}
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int TargetTransformInfo::getGEPCost(Type *PointeeType, const Value *Ptr,
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ArrayRef<const Value *> Operands) const {
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return TTIImpl->getGEPCost(PointeeType, Ptr, Operands);
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}
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int TargetTransformInfo::getIntrinsicCost(
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Intrinsic::ID IID, Type *RetTy, ArrayRef<const Value *> Arguments) const {
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int Cost = TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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unsigned
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TargetTransformInfo::getEstimatedNumberOfCaseClusters(const SwitchInst &SI,
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unsigned &JTSize) const {
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return TTIImpl->getEstimatedNumberOfCaseClusters(SI, JTSize);
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}
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int TargetTransformInfo::getUserCost(const User *U,
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ArrayRef<const Value *> Operands) const {
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int Cost = TTIImpl->getUserCost(U, Operands);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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bool TargetTransformInfo::hasBranchDivergence() const {
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return TTIImpl->hasBranchDivergence();
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}
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bool TargetTransformInfo::isSourceOfDivergence(const Value *V) const {
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return TTIImpl->isSourceOfDivergence(V);
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}
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bool llvm::TargetTransformInfo::isAlwaysUniform(const Value *V) const {
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return TTIImpl->isAlwaysUniform(V);
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}
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unsigned TargetTransformInfo::getFlatAddressSpace() const {
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return TTIImpl->getFlatAddressSpace();
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}
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bool TargetTransformInfo::isLoweredToCall(const Function *F) const {
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return TTIImpl->isLoweredToCall(F);
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}
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void TargetTransformInfo::getUnrollingPreferences(
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Loop *L, ScalarEvolution &SE, UnrollingPreferences &UP) const {
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return TTIImpl->getUnrollingPreferences(L, SE, UP);
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}
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bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
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return TTIImpl->isLegalAddImmediate(Imm);
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}
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bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
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return TTIImpl->isLegalICmpImmediate(Imm);
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}
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bool TargetTransformInfo::isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV,
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int64_t BaseOffset,
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bool HasBaseReg,
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int64_t Scale,
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unsigned AddrSpace) const {
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return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
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Scale, AddrSpace);
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}
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bool TargetTransformInfo::isLSRCostLess(LSRCost &C1, LSRCost &C2) const {
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return TTIImpl->isLSRCostLess(C1, C2);
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}
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bool TargetTransformInfo::isLegalMaskedStore(Type *DataType) const {
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return TTIImpl->isLegalMaskedStore(DataType);
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}
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bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType) const {
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return TTIImpl->isLegalMaskedLoad(DataType);
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}
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bool TargetTransformInfo::isLegalMaskedGather(Type *DataType) const {
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return TTIImpl->isLegalMaskedGather(DataType);
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}
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bool TargetTransformInfo::isLegalMaskedScatter(Type *DataType) const {
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return TTIImpl->isLegalMaskedGather(DataType);
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}
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bool TargetTransformInfo::prefersVectorizedAddressing() const {
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return TTIImpl->prefersVectorizedAddressing();
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}
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int TargetTransformInfo::getScalingFactorCost(Type *Ty, GlobalValue *BaseGV,
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int64_t BaseOffset,
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bool HasBaseReg,
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int64_t Scale,
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unsigned AddrSpace) const {
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int Cost = TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
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Scale, AddrSpace);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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bool TargetTransformInfo::isFoldableMemAccessOffset(Instruction *I,
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int64_t Offset) const {
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return TTIImpl->isFoldableMemAccessOffset(I, Offset);
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}
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bool TargetTransformInfo::isTruncateFree(Type *Ty1, Type *Ty2) const {
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return TTIImpl->isTruncateFree(Ty1, Ty2);
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}
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bool TargetTransformInfo::isProfitableToHoist(Instruction *I) const {
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return TTIImpl->isProfitableToHoist(I);
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}
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bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
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return TTIImpl->isTypeLegal(Ty);
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}
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unsigned TargetTransformInfo::getJumpBufAlignment() const {
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return TTIImpl->getJumpBufAlignment();
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}
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unsigned TargetTransformInfo::getJumpBufSize() const {
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return TTIImpl->getJumpBufSize();
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}
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bool TargetTransformInfo::shouldBuildLookupTables() const {
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return TTIImpl->shouldBuildLookupTables();
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}
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bool TargetTransformInfo::shouldBuildLookupTablesForConstant(Constant *C) const {
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return TTIImpl->shouldBuildLookupTablesForConstant(C);
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}
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unsigned TargetTransformInfo::
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getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) const {
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return TTIImpl->getScalarizationOverhead(Ty, Insert, Extract);
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}
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unsigned TargetTransformInfo::
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getOperandsScalarizationOverhead(ArrayRef<const Value *> Args,
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unsigned VF) const {
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return TTIImpl->getOperandsScalarizationOverhead(Args, VF);
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}
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bool TargetTransformInfo::supportsEfficientVectorElementLoadStore() const {
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return TTIImpl->supportsEfficientVectorElementLoadStore();
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}
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bool TargetTransformInfo::enableAggressiveInterleaving(bool LoopHasReductions) const {
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return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
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}
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bool TargetTransformInfo::expandMemCmp(Instruction *I, unsigned &MaxLoadSize) const {
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return TTIImpl->expandMemCmp(I, MaxLoadSize);
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}
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bool TargetTransformInfo::enableInterleavedAccessVectorization() const {
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return TTIImpl->enableInterleavedAccessVectorization();
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}
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bool TargetTransformInfo::isFPVectorizationPotentiallyUnsafe() const {
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return TTIImpl->isFPVectorizationPotentiallyUnsafe();
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}
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bool TargetTransformInfo::allowsMisalignedMemoryAccesses(LLVMContext &Context,
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unsigned BitWidth,
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unsigned AddressSpace,
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unsigned Alignment,
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bool *Fast) const {
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return TTIImpl->allowsMisalignedMemoryAccesses(Context, BitWidth, AddressSpace,
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Alignment, Fast);
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}
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TargetTransformInfo::PopcntSupportKind
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TargetTransformInfo::getPopcntSupport(unsigned IntTyWidthInBit) const {
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return TTIImpl->getPopcntSupport(IntTyWidthInBit);
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}
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bool TargetTransformInfo::haveFastSqrt(Type *Ty) const {
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return TTIImpl->haveFastSqrt(Ty);
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}
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int TargetTransformInfo::getFPOpCost(Type *Ty) const {
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int Cost = TTIImpl->getFPOpCost(Ty);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getIntImmCodeSizeCost(unsigned Opcode, unsigned Idx,
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const APInt &Imm,
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Type *Ty) const {
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int Cost = TTIImpl->getIntImmCodeSizeCost(Opcode, Idx, Imm, Ty);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
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int Cost = TTIImpl->getIntImmCost(Imm, Ty);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
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const APInt &Imm, Type *Ty) const {
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int Cost = TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
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const APInt &Imm, Type *Ty) const {
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int Cost = TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
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return TTIImpl->getNumberOfRegisters(Vector);
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}
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unsigned TargetTransformInfo::getRegisterBitWidth(bool Vector) const {
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return TTIImpl->getRegisterBitWidth(Vector);
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}
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unsigned TargetTransformInfo::getMinVectorRegisterBitWidth() const {
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return TTIImpl->getMinVectorRegisterBitWidth();
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}
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bool TargetTransformInfo::shouldConsiderAddressTypePromotion(
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const Instruction &I, bool &AllowPromotionWithoutCommonHeader) const {
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return TTIImpl->shouldConsiderAddressTypePromotion(
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I, AllowPromotionWithoutCommonHeader);
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}
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unsigned TargetTransformInfo::getCacheLineSize() const {
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return TTIImpl->getCacheLineSize();
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}
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unsigned TargetTransformInfo::getPrefetchDistance() const {
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return TTIImpl->getPrefetchDistance();
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}
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unsigned TargetTransformInfo::getMinPrefetchStride() const {
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return TTIImpl->getMinPrefetchStride();
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}
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unsigned TargetTransformInfo::getMaxPrefetchIterationsAhead() const {
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return TTIImpl->getMaxPrefetchIterationsAhead();
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}
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unsigned TargetTransformInfo::getMaxInterleaveFactor(unsigned VF) const {
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return TTIImpl->getMaxInterleaveFactor(VF);
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}
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int TargetTransformInfo::getArithmeticInstrCost(
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unsigned Opcode, Type *Ty, OperandValueKind Opd1Info,
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OperandValueKind Opd2Info, OperandValueProperties Opd1PropInfo,
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OperandValueProperties Opd2PropInfo,
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ArrayRef<const Value *> Args) const {
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int Cost = TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
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Opd1PropInfo, Opd2PropInfo, Args);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty, int Index,
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Type *SubTp) const {
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int Cost = TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
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Type *Src, const Instruction *I) const {
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assert ((I == nullptr || I->getOpcode() == Opcode) &&
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"Opcode should reflect passed instruction.");
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int Cost = TTIImpl->getCastInstrCost(Opcode, Dst, Src, I);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getExtractWithExtendCost(unsigned Opcode, Type *Dst,
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VectorType *VecTy,
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unsigned Index) const {
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int Cost = TTIImpl->getExtractWithExtendCost(Opcode, Dst, VecTy, Index);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
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int Cost = TTIImpl->getCFInstrCost(Opcode);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
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Type *CondTy, const Instruction *I) const {
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assert ((I == nullptr || I->getOpcode() == Opcode) &&
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"Opcode should reflect passed instruction.");
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int Cost = TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy, I);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
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unsigned Index) const {
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int Cost = TTIImpl->getVectorInstrCost(Opcode, Val, Index);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
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unsigned Alignment,
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unsigned AddressSpace,
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const Instruction *I) const {
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assert ((I == nullptr || I->getOpcode() == Opcode) &&
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"Opcode should reflect passed instruction.");
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int Cost = TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace, I);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
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unsigned Alignment,
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unsigned AddressSpace) const {
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int Cost =
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TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getGatherScatterOpCost(unsigned Opcode, Type *DataTy,
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Value *Ptr, bool VariableMask,
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unsigned Alignment) const {
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int Cost = TTIImpl->getGatherScatterOpCost(Opcode, DataTy, Ptr, VariableMask,
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Alignment);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getInterleavedMemoryOpCost(
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unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
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unsigned Alignment, unsigned AddressSpace) const {
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int Cost = TTIImpl->getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
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Alignment, AddressSpace);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
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ArrayRef<Type *> Tys, FastMathFlags FMF,
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unsigned ScalarizationCostPassed) const {
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int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys, FMF,
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ScalarizationCostPassed);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
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ArrayRef<Value *> Args, FastMathFlags FMF, unsigned VF) const {
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int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Args, FMF, VF);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
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ArrayRef<Type *> Tys) const {
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int Cost = TTIImpl->getCallInstrCost(F, RetTy, Tys);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
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return TTIImpl->getNumberOfParts(Tp);
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}
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int TargetTransformInfo::getAddressComputationCost(Type *Tp,
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ScalarEvolution *SE,
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const SCEV *Ptr) const {
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int Cost = TTIImpl->getAddressComputationCost(Tp, SE, Ptr);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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int TargetTransformInfo::getReductionCost(unsigned Opcode, Type *Ty,
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bool IsPairwiseForm) const {
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int Cost = TTIImpl->getReductionCost(Opcode, Ty, IsPairwiseForm);
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assert(Cost >= 0 && "TTI should not produce negative costs!");
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return Cost;
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}
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unsigned
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TargetTransformInfo::getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys) const {
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return TTIImpl->getCostOfKeepingLiveOverCall(Tys);
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}
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bool TargetTransformInfo::getTgtMemIntrinsic(IntrinsicInst *Inst,
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MemIntrinsicInfo &Info) const {
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return TTIImpl->getTgtMemIntrinsic(Inst, Info);
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}
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unsigned TargetTransformInfo::getAtomicMemIntrinsicMaxElementSize() const {
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return TTIImpl->getAtomicMemIntrinsicMaxElementSize();
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}
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Value *TargetTransformInfo::getOrCreateResultFromMemIntrinsic(
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IntrinsicInst *Inst, Type *ExpectedType) const {
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return TTIImpl->getOrCreateResultFromMemIntrinsic(Inst, ExpectedType);
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}
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bool TargetTransformInfo::areInlineCompatible(const Function *Caller,
|
|
const Function *Callee) const {
|
|
return TTIImpl->areInlineCompatible(Caller, Callee);
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|
}
|
|
|
|
unsigned TargetTransformInfo::getLoadStoreVecRegBitWidth(unsigned AS) const {
|
|
return TTIImpl->getLoadStoreVecRegBitWidth(AS);
|
|
}
|
|
|
|
bool TargetTransformInfo::isLegalToVectorizeLoad(LoadInst *LI) const {
|
|
return TTIImpl->isLegalToVectorizeLoad(LI);
|
|
}
|
|
|
|
bool TargetTransformInfo::isLegalToVectorizeStore(StoreInst *SI) const {
|
|
return TTIImpl->isLegalToVectorizeStore(SI);
|
|
}
|
|
|
|
bool TargetTransformInfo::isLegalToVectorizeLoadChain(
|
|
unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
|
|
return TTIImpl->isLegalToVectorizeLoadChain(ChainSizeInBytes, Alignment,
|
|
AddrSpace);
|
|
}
|
|
|
|
bool TargetTransformInfo::isLegalToVectorizeStoreChain(
|
|
unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
|
|
return TTIImpl->isLegalToVectorizeStoreChain(ChainSizeInBytes, Alignment,
|
|
AddrSpace);
|
|
}
|
|
|
|
unsigned TargetTransformInfo::getLoadVectorFactor(unsigned VF,
|
|
unsigned LoadSize,
|
|
unsigned ChainSizeInBytes,
|
|
VectorType *VecTy) const {
|
|
return TTIImpl->getLoadVectorFactor(VF, LoadSize, ChainSizeInBytes, VecTy);
|
|
}
|
|
|
|
unsigned TargetTransformInfo::getStoreVectorFactor(unsigned VF,
|
|
unsigned StoreSize,
|
|
unsigned ChainSizeInBytes,
|
|
VectorType *VecTy) const {
|
|
return TTIImpl->getStoreVectorFactor(VF, StoreSize, ChainSizeInBytes, VecTy);
|
|
}
|
|
|
|
bool TargetTransformInfo::useReductionIntrinsic(unsigned Opcode,
|
|
Type *Ty, ReductionFlags Flags) const {
|
|
return TTIImpl->useReductionIntrinsic(Opcode, Ty, Flags);
|
|
}
|
|
|
|
bool TargetTransformInfo::shouldExpandReduction(const IntrinsicInst *II) const {
|
|
return TTIImpl->shouldExpandReduction(II);
|
|
}
|
|
|
|
TargetTransformInfo::Concept::~Concept() {}
|
|
|
|
TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
|
|
|
|
TargetIRAnalysis::TargetIRAnalysis(
|
|
std::function<Result(const Function &)> TTICallback)
|
|
: TTICallback(std::move(TTICallback)) {}
|
|
|
|
TargetIRAnalysis::Result TargetIRAnalysis::run(const Function &F,
|
|
FunctionAnalysisManager &) {
|
|
return TTICallback(F);
|
|
}
|
|
|
|
AnalysisKey TargetIRAnalysis::Key;
|
|
|
|
TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(const Function &F) {
|
|
return Result(F.getParent()->getDataLayout());
|
|
}
|
|
|
|
// Register the basic pass.
|
|
INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
|
|
"Target Transform Information", false, true)
|
|
char TargetTransformInfoWrapperPass::ID = 0;
|
|
|
|
void TargetTransformInfoWrapperPass::anchor() {}
|
|
|
|
TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
|
|
: ImmutablePass(ID) {
|
|
initializeTargetTransformInfoWrapperPassPass(
|
|
*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
|
|
TargetIRAnalysis TIRA)
|
|
: ImmutablePass(ID), TIRA(std::move(TIRA)) {
|
|
initializeTargetTransformInfoWrapperPassPass(
|
|
*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(const Function &F) {
|
|
FunctionAnalysisManager DummyFAM;
|
|
TTI = TIRA.run(F, DummyFAM);
|
|
return *TTI;
|
|
}
|
|
|
|
ImmutablePass *
|
|
llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
|
|
return new TargetTransformInfoWrapperPass(std::move(TIRA));
|
|
}
|