1 //===-- AArch64TargetTransformInfo.h - AArch64 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 /// AArch64 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_AARCH64_AARCH64TARGETTRANSFORMINFO_H
18 #define LLVM_LIB_TARGET_AARCH64_AARCH64TARGETTRANSFORMINFO_H
21 #include "AArch64TargetMachine.h"
22 #include "llvm/Analysis/TargetTransformInfo.h"
23 #include "llvm/CodeGen/BasicTTIImpl.h"
24 #include "llvm/Target/TargetLowering.h"
29 class AArch64TTIImpl : public BasicTTIImplBase<AArch64TTIImpl> {
30 typedef BasicTTIImplBase<AArch64TTIImpl> BaseT;
31 typedef TargetTransformInfo TTI;
34 const AArch64TargetMachine *TM;
35 const AArch64Subtarget *ST;
36 const AArch64TargetLowering *TLI;
38 /// Estimate the overhead of scalarizing an instruction. Insert and Extract
39 /// are set if the result needs to be inserted and/or extracted from vectors.
40 unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract);
42 const AArch64Subtarget *getST() const { return ST; }
43 const AArch64TargetLowering *getTLI() const { return TLI; }
45 enum MemIntrinsicType {
46 VECTOR_LDST_TWO_ELEMENTS,
47 VECTOR_LDST_THREE_ELEMENTS,
48 VECTOR_LDST_FOUR_ELEMENTS
52 explicit AArch64TTIImpl(const AArch64TargetMachine *TM, Function &F)
53 : BaseT(TM), TM(TM), ST(TM->getSubtargetImpl(F)),
54 TLI(ST->getTargetLowering()) {}
56 // Provide value semantics. MSVC requires that we spell all of these out.
57 AArch64TTIImpl(const AArch64TTIImpl &Arg)
58 : BaseT(static_cast<const BaseT &>(Arg)), TM(Arg.TM), ST(Arg.ST),
60 AArch64TTIImpl(AArch64TTIImpl &&Arg)
61 : BaseT(std::move(static_cast<BaseT &>(Arg))), TM(std::move(Arg.TM)),
62 ST(std::move(Arg.ST)), TLI(std::move(Arg.TLI)) {}
63 AArch64TTIImpl &operator=(const AArch64TTIImpl &RHS) {
64 BaseT::operator=(static_cast<const BaseT &>(RHS));
70 AArch64TTIImpl &operator=(AArch64TTIImpl &&RHS) {
71 BaseT::operator=(std::move(static_cast<BaseT &>(RHS)));
72 TM = std::move(RHS.TM);
73 ST = std::move(RHS.ST);
74 TLI = std::move(RHS.TLI);
78 /// \name Scalar TTI Implementations
81 using BaseT::getIntImmCost;
82 unsigned getIntImmCost(int64_t Val);
83 unsigned getIntImmCost(const APInt &Imm, Type *Ty);
84 unsigned getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
86 unsigned getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
88 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
92 /// \name Vector TTI Implementations
95 unsigned getNumberOfRegisters(bool Vector) {
104 unsigned getRegisterBitWidth(bool Vector) {
113 unsigned getMaxInterleaveFactor();
115 unsigned getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src);
117 unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
119 unsigned getArithmeticInstrCost(
120 unsigned Opcode, Type *Ty,
121 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
122 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
123 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
124 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None);
126 unsigned getAddressComputationCost(Type *Ty, bool IsComplex);
128 unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy);
130 unsigned getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
131 unsigned AddressSpace);
133 unsigned getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys);
135 void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP);
137 Value *getOrCreateResultFromMemIntrinsic(IntrinsicInst *Inst,
140 bool getTgtMemIntrinsic(IntrinsicInst *Inst, MemIntrinsicInfo &Info);
145 } // end namespace llvm