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interfaces which could be extracted from it, and must be provided on construction, to a chained analysis group. The end goal here is that TTI works much like AA -- there is a baseline "no-op" and target independent pass which is in the group, and each target can expose a target-specific pass in the group. These passes will naturally chain allowing each target-specific pass to delegate to the generic pass as needed. In particular, this will allow a much simpler interface for passes that would like to use TTI -- they can have a hard dependency on TTI and it will just be satisfied by the stub implementation when that is all that is available. This patch is a WIP however. In particular, the "stub" pass is actually the one and only pass, and everything there is implemented by delegating to the target-provided interfaces. As a consequence the tools still have to explicitly construct the pass. Switching targets to provide custom passes and sinking the stub behavior into the NoTTI pass is the next step. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171621 91177308-0d34-0410-b5e6-96231b3b80d8
264 lines
8.4 KiB
C++
264 lines
8.4 KiB
C++
//===- llvm/IR/TargetTransformInfo.cpp --------------------------*- C++ -*-===//
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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/TargetTransformInfo.h"
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#include "llvm/Support/ErrorHandling.h"
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using namespace llvm;
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// Setup the analysis group to manage the TargetTransformInfo passes.
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INITIALIZE_ANALYSIS_GROUP(TargetTransformInfo, "Target Information", NoTTI)
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char TargetTransformInfo::ID = 0;
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TargetTransformInfo::~TargetTransformInfo() {
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}
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void TargetTransformInfo::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequired<TargetTransformInfo>();
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}
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bool TargetTransformInfo::isLegalAddImmediate(int64_t Imm) const {
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return PrevTTI->isLegalAddImmediate(Imm);
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}
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bool TargetTransformInfo::isLegalICmpImmediate(int64_t Imm) const {
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return PrevTTI->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 PrevTTI->isLegalAddressingMode(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 PrevTTI->isTruncateFree(Ty1, Ty2);
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}
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bool TargetTransformInfo::isTypeLegal(Type *Ty) const {
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return PrevTTI->isTypeLegal(Ty);
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}
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unsigned TargetTransformInfo::getJumpBufAlignment() const {
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return PrevTTI->getJumpBufAlignment();
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}
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unsigned TargetTransformInfo::getJumpBufSize() const {
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return PrevTTI->getJumpBufSize();
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}
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bool TargetTransformInfo::shouldBuildLookupTables() const {
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return PrevTTI->shouldBuildLookupTables();
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}
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TargetTransformInfo::PopcntHwSupport
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TargetTransformInfo::getPopcntHwSupport(unsigned IntTyWidthInBit) const {
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return PrevTTI->getPopcntHwSupport(IntTyWidthInBit);
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}
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unsigned TargetTransformInfo::getIntImmCost(const APInt &Imm, Type *Ty) const {
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return PrevTTI->getIntImmCost(Imm, Ty);
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}
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unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
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return PrevTTI->getNumberOfRegisters(Vector);
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}
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unsigned TargetTransformInfo::getArithmeticInstrCost(unsigned Opcode,
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Type *Ty) const {
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return PrevTTI->getArithmeticInstrCost(Opcode, Ty);
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}
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unsigned TargetTransformInfo::getShuffleCost(ShuffleKind Kind, Type *Tp,
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int Index, Type *SubTp) const {
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return PrevTTI->getShuffleCost(Kind, Tp, 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 PrevTTI->getCastInstrCost(Opcode, Dst, Src);
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}
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unsigned TargetTransformInfo::getCFInstrCost(unsigned Opcode) const {
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return PrevTTI->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 PrevTTI->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 PrevTTI->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 PrevTTI->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
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;
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}
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unsigned
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TargetTransformInfo::getIntrinsicInstrCost(Intrinsic::ID ID,
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Type *RetTy,
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ArrayRef<Type *> Tys) const {
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return PrevTTI->getIntrinsicInstrCost(ID, RetTy, Tys);
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}
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unsigned TargetTransformInfo::getNumberOfParts(Type *Tp) const {
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return PrevTTI->getNumberOfParts(Tp);
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}
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namespace {
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class NoTTI : public ImmutablePass, public TargetTransformInfo {
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const ScalarTargetTransformInfo *STTI;
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const VectorTargetTransformInfo *VTTI;
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public:
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// FIXME: This constructor doesn't work which breaks the use of NoTTI on the
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// commandline. This has to be fixed for NoTTI to be fully usable as an
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// analysis pass.
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NoTTI() : ImmutablePass(ID), TargetTransformInfo(0) {
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llvm_unreachable("Unsupported code path!");
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}
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NoTTI(const ScalarTargetTransformInfo *S, const VectorTargetTransformInfo *V)
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: ImmutablePass(ID),
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TargetTransformInfo(0), // NoTTI is special and doesn't delegate here.
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STTI(S), VTTI(V) {
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initializeNoTTIPass(*PassRegistry::getPassRegistry());
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}
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void getAnalysisUsage(AnalysisUsage &AU) const {
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// Note that this subclass is special, and must *not* call
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// TTI::getAnalysisUsage as it breaks the recursion.
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}
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/// Pass identification.
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static char ID;
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/// Provide necessary pointer adjustments for the two base classes.
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virtual void *getAdjustedAnalysisPointer(const void *ID) {
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if (ID == &TargetTransformInfo::ID)
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return (TargetTransformInfo*)this;
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return this;
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}
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// Delegate all predicates through the STTI or VTTI interface.
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bool isLegalAddImmediate(int64_t Imm) const {
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return STTI->isLegalAddImmediate(Imm);
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}
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bool isLegalICmpImmediate(int64_t Imm) const {
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return STTI->isLegalICmpImmediate(Imm);
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}
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bool isLegalAddressingMode(Type *Ty, GlobalValue *BaseGV, int64_t BaseOffset,
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bool HasBaseReg, int64_t Scale) const {
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return STTI->isLegalAddressingMode(Ty, BaseGV, BaseOffset, HasBaseReg,
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Scale);
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}
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bool isTruncateFree(Type *Ty1, Type *Ty2) const {
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return STTI->isTruncateFree(Ty1, Ty2);
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}
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bool isTypeLegal(Type *Ty) const {
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return STTI->isTypeLegal(Ty);
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}
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unsigned getJumpBufAlignment() const {
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return STTI->getJumpBufAlignment();
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}
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unsigned getJumpBufSize() const {
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return STTI->getJumpBufSize();
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}
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bool shouldBuildLookupTables() const {
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return STTI->shouldBuildLookupTables();
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}
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PopcntHwSupport getPopcntHwSupport(unsigned IntTyWidthInBit) const {
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return (PopcntHwSupport)STTI->getPopcntHwSupport(IntTyWidthInBit);
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}
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unsigned getIntImmCost(const APInt &Imm, Type *Ty) const {
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return STTI->getIntImmCost(Imm, Ty);
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}
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unsigned getNumberOfRegisters(bool Vector) const {
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return VTTI->getNumberOfRegisters(Vector);
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}
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unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty) const {
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return VTTI->getArithmeticInstrCost(Opcode, Ty);
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}
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unsigned getShuffleCost(ShuffleKind Kind, Type *Tp,
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int Index = 0, Type *SubTp = 0) const {
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return VTTI->getShuffleCost((VectorTargetTransformInfo::ShuffleKind)Kind,
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Tp, Index, SubTp);
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}
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unsigned getCastInstrCost(unsigned Opcode, Type *Dst,
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Type *Src) const {
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return VTTI->getCastInstrCost(Opcode, Dst, Src);
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}
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unsigned getCFInstrCost(unsigned Opcode) const {
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return VTTI->getCFInstrCost(Opcode);
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}
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unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
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Type *CondTy = 0) const {
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return VTTI->getCmpSelInstrCost(Opcode, ValTy, CondTy);
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}
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unsigned getVectorInstrCost(unsigned Opcode, Type *Val,
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unsigned Index = -1) const {
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return VTTI->getVectorInstrCost(Opcode, Val, Index);
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}
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unsigned getMemoryOpCost(unsigned Opcode, Type *Src,
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unsigned Alignment,
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unsigned AddressSpace) const {
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return VTTI->getMemoryOpCost(Opcode, Src, Alignment, AddressSpace);
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}
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unsigned getIntrinsicInstrCost(Intrinsic::ID ID,
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Type *RetTy,
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ArrayRef<Type*> Tys) const {
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return VTTI->getIntrinsicInstrCost(ID, RetTy, Tys);
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}
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unsigned getNumberOfParts(Type *Tp) const {
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return VTTI->getNumberOfParts(Tp);
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}
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};
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} // end anonymous namespace
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INITIALIZE_AG_PASS(NoTTI, TargetTransformInfo, "no-tti",
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"No target information", true, true, true)
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char NoTTI::ID = 0;
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ImmutablePass *llvm::createNoTTIPass(const ScalarTargetTransformInfo *S,
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const VectorTargetTransformInfo *V) {
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return new NoTTI(S, V);
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}
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