1 //===-- X86TargetTransformInfo.h - X86 specific TTI -------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 /// This file a TargetTransformInfo::Concept conforming object specific to the
11 /// X86 target machine. It uses the target's detailed information to
12 /// provide more precise answers to certain TTI queries, while letting the
13 /// target independent and default TTI implementations handle the rest.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_LIB_TARGET_X86_X86TARGETTRANSFORMINFO_H
18 #define LLVM_LIB_TARGET_X86_X86TARGETTRANSFORMINFO_H
21 #include "X86TargetMachine.h"
22 #include "llvm/Analysis/TargetTransformInfo.h"
23 #include "llvm/CodeGen/BasicTTIImpl.h"
24 #include "llvm/Target/TargetLowering.h"
28 class X86TTIImpl : public BasicTTIImplBase<X86TTIImpl> {
29 typedef BasicTTIImplBase<X86TTIImpl> BaseT;
30 typedef TargetTransformInfo TTI;
33 const X86Subtarget *ST;
34 const X86TargetLowering *TLI;
36 int getScalarizationOverhead(Type *Ty, bool Insert, bool Extract);
38 const X86Subtarget *getST() const { return ST; }
39 const X86TargetLowering *getTLI() const { return TLI; }
42 explicit X86TTIImpl(const X86TargetMachine *TM, const Function &F)
43 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
44 TLI(ST->getTargetLowering()) {}
46 // Provide value semantics. MSVC requires that we spell all of these out.
47 X86TTIImpl(const X86TTIImpl &Arg)
48 : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {}
49 X86TTIImpl(X86TTIImpl &&Arg)
50 : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)),
51 TLI(std::move(Arg.TLI)) {}
53 /// \name Scalar TTI Implementations
55 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
59 /// \name Vector TTI Implementations
62 unsigned getNumberOfRegisters(bool Vector);
63 unsigned getRegisterBitWidth(bool Vector);
64 unsigned getMaxInterleaveFactor(unsigned VF);
65 int getArithmeticInstrCost(
66 unsigned Opcode, Type *Ty,
67 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
68 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
69 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
70 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None);
71 int getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, Type *SubTp);
72 int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src);
73 int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy);
74 int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
75 int getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
76 unsigned AddressSpace);
77 int getMaskedMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
78 unsigned AddressSpace);
79 int getGatherScatterOpCost(unsigned Opcode, Type *DataTy, Value *Ptr,
80 bool VariableMask, unsigned Alignment);
81 int getAddressComputationCost(Type *PtrTy, bool IsComplex);
83 int getReductionCost(unsigned Opcode, Type *Ty, bool IsPairwiseForm);
85 int getIntImmCost(int64_t);
87 int getIntImmCost(const APInt &Imm, Type *Ty);
89 int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
90 int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
92 bool isLegalMaskedLoad(Type *DataType);
93 bool isLegalMaskedStore(Type *DataType);
94 bool isLegalMaskedGather(Type *DataType);
95 bool isLegalMaskedScatter(Type *DataType);
96 bool areInlineCompatible(const Function *Caller,
97 const Function *Callee) const;
99 int getGSScalarCost(unsigned Opcode, Type *DataTy, bool VariableMask,
100 unsigned Alignment, unsigned AddressSpace);
101 int getGSVectorCost(unsigned Opcode, Type *DataTy, Value *Ptr,
102 unsigned Alignment, unsigned AddressSpace);
107 } // end namespace llvm