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d0229876a9
This change adds a new hook for estimating the cost of vector extracts followed by zero- and sign-extensions. The motivating example for this change is the SMOV and UMOV instructions on AArch64. These instructions move data from vector to general purpose registers while performing the corresponding extension (sign-extend for SMOV and zero-extend for UMOV) at the same time. For these operations, TargetTransformInfo can assume the extensions are free and only report the cost of the vector extract. The SLP vectorizer has been updated to make use of the new hook. Differential Revision: http://reviews.llvm.org/D18523 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267725 91177308-0d34-0410-b5e6-96231b3b80d8
441 lines
15 KiB
C++
441 lines
15 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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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::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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int TargetTransformInfo::getUserCost(const User *U) const {
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int Cost = TTIImpl->getUserCost(U);
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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 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, UnrollingPreferences &UP) const {
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return TTIImpl->getUnrollingPreferences(L, 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::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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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::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::enableAggressiveInterleaving(bool LoopHasReductions) const {
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return TTIImpl->enableAggressiveInterleaving(LoopHasReductions);
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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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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::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::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) const {
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int Cost = TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
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Opd1PropInfo, Opd2PropInfo);
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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 {
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int Cost = TTIImpl->getCastInstrCost(Opcode, Dst, Src);
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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 {
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int Cost = TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy);
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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) const {
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int Cost = TTIImpl->getMemoryOpCost(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::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,
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FastMathFlags FMF) const {
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int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys, FMF);
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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,
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FastMathFlags FMF) const {
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int Cost = TTIImpl->getIntrinsicInstrCost(ID, RetTy, Args, FMF);
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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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bool IsComplex) const {
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int Cost = TTIImpl->getAddressComputationCost(Tp, IsComplex);
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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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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,
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const Function *Callee) const {
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return TTIImpl->areInlineCompatible(Caller, Callee);
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}
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TargetTransformInfo::Concept::~Concept() {}
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TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
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TargetIRAnalysis::TargetIRAnalysis(
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std::function<Result(const Function &)> TTICallback)
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: TTICallback(TTICallback) {}
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TargetIRAnalysis::Result TargetIRAnalysis::run(const Function &F) {
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return TTICallback(F);
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}
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char TargetIRAnalysis::PassID;
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TargetIRAnalysis::Result TargetIRAnalysis::getDefaultTTI(const Function &F) {
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return Result(F.getParent()->getDataLayout());
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}
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// Register the basic pass.
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INITIALIZE_PASS(TargetTransformInfoWrapperPass, "tti",
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"Target Transform Information", false, true)
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char TargetTransformInfoWrapperPass::ID = 0;
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void TargetTransformInfoWrapperPass::anchor() {}
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TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass()
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: ImmutablePass(ID) {
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initializeTargetTransformInfoWrapperPassPass(
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*PassRegistry::getPassRegistry());
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}
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TargetTransformInfoWrapperPass::TargetTransformInfoWrapperPass(
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TargetIRAnalysis TIRA)
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: ImmutablePass(ID), TIRA(std::move(TIRA)) {
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initializeTargetTransformInfoWrapperPassPass(
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*PassRegistry::getPassRegistry());
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}
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TargetTransformInfo &TargetTransformInfoWrapperPass::getTTI(const Function &F) {
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TTI = TIRA.run(F);
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return *TTI;
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}
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ImmutablePass *
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llvm::createTargetTransformInfoWrapperPass(TargetIRAnalysis TIRA) {
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return new TargetTransformInfoWrapperPass(std::move(TIRA));
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}
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