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/CodeGen/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 const X86Subtarget *getST() const { return ST; }
37 const X86TargetLowering *getTLI() const { return TLI; }
40 explicit X86TTIImpl(const X86TargetMachine *TM, const Function &F)
41 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
42 TLI(ST->getTargetLowering()) {}
44 /// \name Scalar TTI Implementations
46 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
50 /// \name Cache TTI Implementation
52 llvm::Optional<unsigned> getCacheSize(
53 TargetTransformInfo::CacheLevel Level) const;
54 llvm::Optional<unsigned> getCacheAssociativity(
55 TargetTransformInfo::CacheLevel Level) const;
58 /// \name Vector TTI Implementations
61 unsigned getNumberOfRegisters(bool Vector);
62 unsigned getRegisterBitWidth(bool Vector) const;
63 unsigned getLoadStoreVecRegBitWidth(unsigned AS) const;
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 ArrayRef<const Value *> Args = ArrayRef<const Value *>());
72 int getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, Type *SubTp);
73 int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
74 const Instruction *I = nullptr);
75 int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
76 const Instruction *I = nullptr);
77 int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
78 int getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
79 unsigned AddressSpace, const Instruction *I = nullptr);
80 int getMaskedMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
81 unsigned AddressSpace);
82 int getGatherScatterOpCost(unsigned Opcode, Type *DataTy, Value *Ptr,
83 bool VariableMask, unsigned Alignment);
84 int getAddressComputationCost(Type *PtrTy, ScalarEvolution *SE,
87 unsigned getAtomicMemIntrinsicMaxElementSize() const;
89 int getIntrinsicInstrCost(Intrinsic::ID IID, Type *RetTy,
90 ArrayRef<Type *> Tys, FastMathFlags FMF,
91 unsigned ScalarizationCostPassed = UINT_MAX);
92 int getIntrinsicInstrCost(Intrinsic::ID IID, Type *RetTy,
93 ArrayRef<Value *> Args, FastMathFlags FMF,
96 int getArithmeticReductionCost(unsigned Opcode, Type *Ty,
99 int getMinMaxReductionCost(Type *Ty, Type *CondTy, bool IsPairwiseForm,
102 int getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy,
103 unsigned Factor, ArrayRef<unsigned> Indices,
104 unsigned Alignment, unsigned AddressSpace,
105 bool UseMaskForCond = false,
106 bool UseMaskForGaps = false);
107 int getInterleavedMemoryOpCostAVX512(unsigned Opcode, Type *VecTy,
108 unsigned Factor, ArrayRef<unsigned> Indices,
109 unsigned Alignment, unsigned AddressSpace,
110 bool UseMaskForCond = false,
111 bool UseMaskForGaps = false);
112 int getInterleavedMemoryOpCostAVX2(unsigned Opcode, Type *VecTy,
113 unsigned Factor, ArrayRef<unsigned> Indices,
114 unsigned Alignment, unsigned AddressSpace,
115 bool UseMaskForCond = false,
116 bool UseMaskForGaps = false);
118 int getIntImmCost(int64_t);
120 int getIntImmCost(const APInt &Imm, Type *Ty);
122 unsigned getUserCost(const User *U, ArrayRef<const Value *> Operands);
124 int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
125 int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
127 bool isLSRCostLess(TargetTransformInfo::LSRCost &C1,
128 TargetTransformInfo::LSRCost &C2);
129 bool canMacroFuseCmp();
130 bool isLegalMaskedLoad(Type *DataType);
131 bool isLegalMaskedStore(Type *DataType);
132 bool isLegalMaskedGather(Type *DataType);
133 bool isLegalMaskedScatter(Type *DataType);
134 bool hasDivRemOp(Type *DataType, bool IsSigned);
135 bool isFCmpOrdCheaperThanFCmpZero(Type *Ty);
136 bool areInlineCompatible(const Function *Caller,
137 const Function *Callee) const;
138 const TTI::MemCmpExpansionOptions *enableMemCmpExpansion(
139 bool IsZeroCmp) const;
140 bool enableInterleavedAccessVectorization();
142 int getGSScalarCost(unsigned Opcode, Type *DataTy, bool VariableMask,
143 unsigned Alignment, unsigned AddressSpace);
144 int getGSVectorCost(unsigned Opcode, Type *DataTy, Value *Ptr,
145 unsigned Alignment, unsigned AddressSpace);
150 } // end namespace llvm