1//===-- SystemZTargetTransformInfo.h - SystemZ-specific TTI ---------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H
10#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H
11
12#include "SystemZTargetMachine.h"
13#include "llvm/Analysis/TargetTransformInfo.h"
14#include "llvm/CodeGen/BasicTTIImpl.h"
15
16namespace llvm {
17
18class SystemZTTIImpl : public BasicTTIImplBase<SystemZTTIImpl> {
19  typedef BasicTTIImplBase<SystemZTTIImpl> BaseT;
20  typedef TargetTransformInfo TTI;
21  friend BaseT;
22
23  const SystemZSubtarget *ST;
24  const SystemZTargetLowering *TLI;
25
26  const SystemZSubtarget *getST() const { return ST; }
27  const SystemZTargetLowering *getTLI() const { return TLI; }
28
29  unsigned const LIBCALL_COST = 30;
30
31  bool isInt128InVR(Type *Ty) { return Ty->isIntegerTy(128) && ST->hasVector(); }
32
33public:
34  explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F)
35      : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
36        TLI(ST->getTargetLowering()) {}
37
38  /// \name Scalar TTI Implementations
39  /// @{
40
41  unsigned getInliningThresholdMultiplier() const { return 3; }
42  unsigned adjustInliningThreshold(const CallBase *CB) const;
43
44  InstructionCost getIntImmCost(const APInt &Imm, Type *Ty,
45                                TTI::TargetCostKind CostKind);
46
47  InstructionCost getIntImmCostInst(unsigned Opcode, unsigned Idx,
48                                    const APInt &Imm, Type *Ty,
49                                    TTI::TargetCostKind CostKind,
50                                    Instruction *Inst = nullptr);
51  InstructionCost getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx,
52                                      const APInt &Imm, Type *Ty,
53                                      TTI::TargetCostKind CostKind);
54
55  TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
56
57  void getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
58                               TTI::UnrollingPreferences &UP,
59                               OptimizationRemarkEmitter *ORE);
60
61  void getPeelingPreferences(Loop *L, ScalarEvolution &SE,
62                             TTI::PeelingPreferences &PP);
63
64  bool isLSRCostLess(const TargetTransformInfo::LSRCost &C1,
65                     const TargetTransformInfo::LSRCost &C2);
66  /// @}
67
68  /// \name Vector TTI Implementations
69  /// @{
70
71  unsigned getNumberOfRegisters(unsigned ClassID) const;
72  TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const;
73
74  unsigned getCacheLineSize() const override { return 256; }
75  unsigned getPrefetchDistance() const override { return 4500; }
76  unsigned getMinPrefetchStride(unsigned NumMemAccesses,
77                                unsigned NumStridedMemAccesses,
78                                unsigned NumPrefetches,
79                                bool HasCall) const override;
80  bool enableWritePrefetching() const override { return true; }
81
82  bool hasDivRemOp(Type *DataType, bool IsSigned);
83  bool prefersVectorizedAddressing() { return false; }
84  bool LSRWithInstrQueries() { return true; }
85  bool supportsEfficientVectorElementLoadStore() { return true; }
86  bool enableInterleavedAccessVectorization() { return true; }
87
88  InstructionCost getArithmeticInstrCost(
89      unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind,
90      TTI::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None},
91      TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None},
92      ArrayRef<const Value *> Args = ArrayRef<const Value *>(),
93      const Instruction *CxtI = nullptr);
94  InstructionCost getShuffleCost(TTI::ShuffleKind Kind, VectorType *Tp,
95                                 ArrayRef<int> Mask,
96                                 TTI::TargetCostKind CostKind, int Index,
97                                 VectorType *SubTp,
98                                 ArrayRef<const Value *> Args = std::nullopt);
99  unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy);
100  unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy);
101  unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst,
102                                         const Instruction *I);
103  InstructionCost getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
104                                   TTI::CastContextHint CCH,
105                                   TTI::TargetCostKind CostKind,
106                                   const Instruction *I = nullptr);
107  InstructionCost getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
108                                     CmpInst::Predicate VecPred,
109                                     TTI::TargetCostKind CostKind,
110                                     const Instruction *I = nullptr);
111  using BaseT::getVectorInstrCost;
112  InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
113                                     TTI::TargetCostKind CostKind,
114                                     unsigned Index, Value *Op0, Value *Op1);
115  bool isFoldableLoad(const LoadInst *Ld, const Instruction *&FoldedValue);
116  InstructionCost
117  getMemoryOpCost(unsigned Opcode, Type *Src, MaybeAlign Alignment,
118                  unsigned AddressSpace, TTI::TargetCostKind CostKind,
119                  TTI::OperandValueInfo OpInfo = {TTI::OK_AnyValue, TTI::OP_None},
120                  const Instruction *I = nullptr);
121
122  InstructionCost getInterleavedMemoryOpCost(
123      unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
124      Align Alignment, unsigned AddressSpace, TTI::TargetCostKind CostKind,
125      bool UseMaskForCond = false, bool UseMaskForGaps = false);
126
127  InstructionCost getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
128                                        TTI::TargetCostKind CostKind);
129  /// @}
130};
131
132} // end namespace llvm
133
134#endif
135