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 AArch64Subtarget *ST;
35 const AArch64TargetLowering *TLI;
37 /// Estimate the overhead of scalarizing an instruction. Insert and Extract
38 /// are set if the result needs to be inserted and/or extracted from vectors.
39 unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract);
41 const AArch64Subtarget *getST() const { return ST; }
42 const AArch64TargetLowering *getTLI() const { return TLI; }
44 enum MemIntrinsicType {
45 VECTOR_LDST_TWO_ELEMENTS,
46 VECTOR_LDST_THREE_ELEMENTS,
47 VECTOR_LDST_FOUR_ELEMENTS
51 explicit AArch64TTIImpl(const AArch64TargetMachine *TM, const Function &F)
52 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
53 TLI(ST->getTargetLowering()) {}
55 /// \name Scalar TTI Implementations
58 using BaseT::getIntImmCost;
59 int getIntImmCost(int64_t Val);
60 int getIntImmCost(const APInt &Imm, Type *Ty);
61 int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
62 int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
64 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
68 /// \name Vector TTI Implementations
71 bool enableInterleavedAccessVectorization() { return true; }
73 unsigned getNumberOfRegisters(bool Vector) {
82 unsigned getRegisterBitWidth(bool Vector) {
91 unsigned getMaxInterleaveFactor(unsigned VF);
93 int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src);
95 int getExtractWithExtendCost(unsigned Opcode, Type *Dst, VectorType *VecTy,
98 int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
100 int getArithmeticInstrCost(
101 unsigned Opcode, Type *Ty,
102 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
103 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
104 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
105 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
106 ArrayRef<const Value *> Args = ArrayRef<const Value *>());
108 int getAddressComputationCost(Type *Ty, ScalarEvolution *SE, const SCEV *Ptr);
110 int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy);
112 int getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
113 unsigned AddressSpace);
115 int getCostOfKeepingLiveOverCall(ArrayRef<Type *> Tys);
117 void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP);
119 Value *getOrCreateResultFromMemIntrinsic(IntrinsicInst *Inst,
122 bool getTgtMemIntrinsic(IntrinsicInst *Inst, MemIntrinsicInfo &Info);
124 int getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy, unsigned Factor,
125 ArrayRef<unsigned> Indices, unsigned Alignment,
126 unsigned AddressSpace);
128 unsigned getCacheLineSize();
130 unsigned getPrefetchDistance();
132 unsigned getMinPrefetchStride();
134 unsigned getMaxPrefetchIterationsAhead();
138 } // end namespace llvm