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https://github.com/c64scene-ar/llvm-6502.git
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5733100450
Summary: Some optimizations such as jump threading and loop unswitching can negatively affect performance when applied to divergent branches. The divergence analysis added in this patch conservatively estimates which branches in a GPU program can diverge. This information can then help LLVM to run certain optimizations selectively. Test Plan: test/Analysis/DivergenceAnalysis/NVPTX/diverge.ll Reviewers: resistor, hfinkel, eliben, meheff, jholewinski Subscribers: broune, bjarke.roune, madhur13490, tstellarAMD, dberlin, echristo, jholewinski, llvm-commits Differential Revision: http://reviews.llvm.org/D8576 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234567 91177308-0d34-0410-b5e6-96231b3b80d8
325 lines
11 KiB
C++
325 lines
11 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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unsigned TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
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Type *OpTy) const {
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return TTIImpl->getOperationCost(Opcode, Ty, OpTy);
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}
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unsigned TargetTransformInfo::getCallCost(FunctionType *FTy,
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int NumArgs) const {
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return TTIImpl->getCallCost(FTy, NumArgs);
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}
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unsigned
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TargetTransformInfo::getCallCost(const Function *F,
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ArrayRef<const Value *> Arguments) const {
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return TTIImpl->getCallCost(F, Arguments);
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}
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unsigned
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TargetTransformInfo::getIntrinsicCost(Intrinsic::ID IID, Type *RetTy,
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ArrayRef<const Value *> Arguments) const {
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return TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
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}
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unsigned TargetTransformInfo::getUserCost(const User *U) const {
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return TTIImpl->getUserCost(U);
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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) const {
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return TTIImpl->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
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Scale);
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}
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bool TargetTransformInfo::isLegalMaskedStore(Type *DataType,
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int Consecutive) const {
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return TTIImpl->isLegalMaskedStore(DataType, Consecutive);
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}
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bool TargetTransformInfo::isLegalMaskedLoad(Type *DataType,
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int Consecutive) const {
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return TTIImpl->isLegalMaskedLoad(DataType, Consecutive);
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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) const {
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return TTIImpl->getScalingFactorCost(Ty, BaseGV, BaseOffset, HasBaseReg,
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Scale);
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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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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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unsigned TargetTransformInfo::getFPOpCost(Type *Ty) const {
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return TTIImpl->getFPOpCost(Ty);
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}
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unsigned TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
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return TTIImpl->getIntImmCost(Imm, Ty);
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}
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unsigned TargetTransformInfo::getIntImmCost(unsigned Opcode, unsigned Idx,
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const APInt &Imm, Type *Ty) const {
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return TTIImpl->getIntImmCost(Opcode, Idx, Imm, Ty);
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}
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unsigned TargetTransformInfo::getIntImmCost(Intrinsic::ID IID, unsigned Idx,
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const APInt &Imm, Type *Ty) const {
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return TTIImpl->getIntImmCost(IID, Idx, Imm, Ty);
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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::getMaxInterleaveFactor() const {
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return TTIImpl->getMaxInterleaveFactor();
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}
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unsigned 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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return TTIImpl->getArithmeticInstrCost(Opcode, Ty, Opd1Info, Opd2Info,
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Opd1PropInfo, Opd2PropInfo);
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}
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unsigned TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Ty,
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int Index, Type *SubTp) const {
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return TTIImpl->getShuffleCost(Kind, Ty, Index, SubTp);
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}
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unsigned TargetTransformInfo::getCastInstrCost(unsigned Opcode, Type *Dst,
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Type *Src) const {
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return TTIImpl->getCastInstrCost(Opcode, Dst, Src);
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}
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unsigned TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
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return TTIImpl->getCFInstrCost(Opcode);
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}
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unsigned TargetTransformInfo::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
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Type *CondTy) const {
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return TTIImpl->getCmpSelInstrCost(Opcode, ValTy, CondTy);
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}
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unsigned TargetTransformInfo::getVectorInstrCost(unsigned Opcode, Type *Val,
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unsigned Index) const {
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return TTIImpl->getVectorInstrCost(Opcode, Val, Index);
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}
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unsigned TargetTransformInfo::getMemoryOpCost(unsigned Opcode, Type *Src,
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unsigned Alignment,
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unsigned AddressSpace) const {
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return TTIImpl->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
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}
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unsigned
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TargetTransformInfo::getMaskedMemoryOpCost(unsigned Opcode, Type *Src,
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unsigned Alignment,
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unsigned AddressSpace) const {
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return TTIImpl->getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
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}
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unsigned
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TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
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ArrayRef<Type *> Tys) const {
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return TTIImpl->getIntrinsicInstrCost(ID, RetTy, Tys);
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}
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unsigned TargetTransformInfo::getCallInstrCost(Function *F, Type *RetTy,
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ArrayRef<Type *> Tys) const {
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return TTIImpl->getCallInstrCost(F, RetTy, Tys);
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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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unsigned TargetTransformInfo::getAddressComputationCost(Type *Tp,
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bool IsComplex) const {
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return TTIImpl->getAddressComputationCost(Tp, IsComplex);
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}
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unsigned TargetTransformInfo::getReductionCost(unsigned Opcode, Type *Ty,
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bool IsPairwiseForm) const {
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return TTIImpl->getReductionCost(Opcode, Ty, IsPairwiseForm);
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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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TargetTransformInfo::Concept::~Concept() {}
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TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
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TargetIRAnalysis::TargetIRAnalysis(
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std::function<Result(Function &)> TTICallback)
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: TTICallback(TTICallback) {}
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TargetIRAnalysis::Result TargetIRAnalysis::run(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(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(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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