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dad102bcc9
analyses to have a common type which is enforced rather than using a char object and a `void *` type when used as an identifier. This has a number of advantages. First, it at least helps some of the confusion raised in Justin Lebar's code review of why `void *` was being used everywhere by having a stronger type that connects to documentation about this. However, perhaps more importantly, it addresses a serious issue where the alignment of these pointer-like identifiers was unknown. This made it hard to use them in pointer-like data structures. We were already dodging this in dangerous ways to create the "all analyses" entry. In a subsequent patch I attempted to use these with TinyPtrVector and things fell apart in a very bad way. And it isn't just a compile time or type system issue. Worse than that, the actual alignment of these pointer-like opaque identifiers wasn't guaranteed to be a useful alignment as they were just characters. This change introduces a type to use as the "key" object whose address forms the opaque identifier. This both forces the objects to have proper alignment, and provides type checking that we get it right everywhere. It also makes the types somewhat less mysterious than `void *`. We could go one step further and introduce a truly opaque pointer-like type to return from the `ID()` static function rather than returning `AnalysisKey *`, but that didn't seem to be a clear win so this is just the initial change to get to a reliably typed and aligned object serving is a key for all the analyses. Thanks to Richard Smith and Justin Lebar for helping pick plausible names and avoid making this refactoring many times. =] And thanks to Sean for the super fast review! While here, I've tried to move away from the "PassID" nomenclature entirely as it wasn't really helping and is overloaded with old pass manager constructs. Now we have IDs for analyses, and key objects whose address can be used as IDs. Where possible and clear I've shortened this to just "ID". In a few places I kept "AnalysisID" to make it clear what was being identified. Differential Revision: https://reviews.llvm.org/D27031 llvm-svn: 287783
512 lines
19 KiB
C++
512 lines
19 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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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::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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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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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::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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unsigned TargetTransformInfo::getLoadStoreVecRegBitWidth(unsigned AS) const {
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return TTIImpl->getLoadStoreVecRegBitWidth(AS);
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}
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bool TargetTransformInfo::isLegalToVectorizeLoad(LoadInst *LI) const {
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return TTIImpl->isLegalToVectorizeLoad(LI);
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}
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bool TargetTransformInfo::isLegalToVectorizeStore(StoreInst *SI) const {
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return TTIImpl->isLegalToVectorizeStore(SI);
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}
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bool TargetTransformInfo::isLegalToVectorizeLoadChain(
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unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
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return TTIImpl->isLegalToVectorizeLoadChain(ChainSizeInBytes, Alignment,
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AddrSpace);
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}
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bool TargetTransformInfo::isLegalToVectorizeStoreChain(
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unsigned ChainSizeInBytes, unsigned Alignment, unsigned AddrSpace) const {
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return TTIImpl->isLegalToVectorizeStoreChain(ChainSizeInBytes, Alignment,
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AddrSpace);
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}
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unsigned TargetTransformInfo::getLoadVectorFactor(unsigned VF,
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unsigned LoadSize,
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unsigned ChainSizeInBytes,
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VectorType *VecTy) const {
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return TTIImpl->getLoadVectorFactor(VF, LoadSize, ChainSizeInBytes, VecTy);
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}
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unsigned TargetTransformInfo::getStoreVectorFactor(unsigned VF,
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unsigned StoreSize,
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unsigned ChainSizeInBytes,
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VectorType *VecTy) const {
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return TTIImpl->getStoreVectorFactor(VF, StoreSize, ChainSizeInBytes, VecTy);
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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(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));
|
|
}
|