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5168f3454a
This checks subtarget feature compatibility for inlining by verifying
that the callee is a strict subset of the caller's features. This includes
the cpu as part of the subtarget we can get via the incoming functions as
the backend takes CPUs as feature sets.
This allows us to inline things like:
int foo() { return baz(); }
int __attribute__((target("sse4.2"))) bar() {
return foo();
}
so that generic code can be inlined into specialized functions.
llvm-svn: 241221
115 lines
4.1 KiB
C++
115 lines
4.1 KiB
C++
//===-- X86TargetTransformInfo.h - X86 specific TTI -------------*- 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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/// \file
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/// This file a TargetTransformInfo::Concept conforming object specific to the
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/// X86 target machine. It uses the target's detailed information to
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/// provide more precise answers to certain TTI queries, while letting the
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/// target independent and default TTI implementations handle the rest.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_X86_X86TARGETTRANSFORMINFO_H
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#define LLVM_LIB_TARGET_X86_X86TARGETTRANSFORMINFO_H
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#include "X86.h"
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#include "X86TargetMachine.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/CodeGen/BasicTTIImpl.h"
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#include "llvm/Target/TargetLowering.h"
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namespace llvm {
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class X86TTIImpl : public BasicTTIImplBase<X86TTIImpl> {
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typedef BasicTTIImplBase<X86TTIImpl> BaseT;
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typedef TargetTransformInfo TTI;
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friend BaseT;
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const X86Subtarget *ST;
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const X86TargetLowering *TLI;
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unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract);
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const X86Subtarget *getST() const { return ST; }
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const X86TargetLowering *getTLI() const { return TLI; }
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public:
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explicit X86TTIImpl(const X86TargetMachine *TM, Function &F)
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: BaseT(TM), ST(TM->getSubtargetImpl(F)), TLI(ST->getTargetLowering()) {}
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// Provide value semantics. MSVC requires that we spell all of these out.
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X86TTIImpl(const X86TTIImpl &Arg)
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: BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {}
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X86TTIImpl(X86TTIImpl &&Arg)
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: BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)),
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TLI(std::move(Arg.TLI)) {}
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X86TTIImpl &operator=(const X86TTIImpl &RHS) {
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BaseT::operator=(static_cast<const BaseT &>(RHS));
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ST = RHS.ST;
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TLI = RHS.TLI;
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return *this;
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}
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X86TTIImpl &operator=(X86TTIImpl &&RHS) {
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BaseT::operator=(std::move(static_cast<BaseT &>(RHS)));
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ST = std::move(RHS.ST);
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TLI = std::move(RHS.TLI);
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return *this;
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}
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/// \name Scalar TTI Implementations
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/// @{
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TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
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/// @}
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/// \name Vector TTI Implementations
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/// @{
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unsigned getNumberOfRegisters(bool Vector);
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unsigned getRegisterBitWidth(bool Vector);
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unsigned getMaxInterleaveFactor(unsigned VF);
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unsigned getArithmeticInstrCost(
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unsigned Opcode, Type *Ty,
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TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
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TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
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TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
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TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None);
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unsigned getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index,
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Type *SubTp);
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unsigned getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src);
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unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy);
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unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
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unsigned getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
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unsigned AddressSpace);
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unsigned getMaskedMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
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unsigned AddressSpace);
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unsigned getAddressComputationCost(Type *PtrTy, bool IsComplex);
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unsigned getReductionCost(unsigned Opcode, Type *Ty, bool IsPairwiseForm);
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unsigned getIntImmCost(int64_t);
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unsigned getIntImmCost(const APInt &Imm, Type *Ty);
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unsigned getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
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Type *Ty);
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unsigned getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
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Type *Ty);
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bool isLegalMaskedLoad(Type *DataType, int Consecutive);
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bool isLegalMaskedStore(Type *DataType, int Consecutive);
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bool hasCompatibleFunctionAttributes(const Function *Caller,
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const Function *Callee) const;
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/// @}
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};
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} // end namespace llvm
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#endif
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