llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.h

   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
  16 namespace llvm {
  17
  18 class 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
  33 public:
  34   explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F)
  35       : BaseT(TM, F.getDataLayout()), ST(TM->getSubtargetImpl(F)),
  36         TLI(ST->getTargetLowering()) {}
  37
  38   /// \name Scalar TTI Implementations
  39   /// @{
  40
  41   unsigned adjustInliningThreshold(const CallBase *CB) const;
  42
  43   InstructionCost getIntImmCost(const APInt &Imm, Type *Ty,
  44                                 TTI::TargetCostKind CostKind);
  45
  46   InstructionCost getIntImmCostInst(unsigned Opcode, unsigned Idx,
  47                                     const APInt &Imm, Type *Ty,
  48                                     TTI::TargetCostKind CostKind,
  49                                     Instruction *Inst = nullptr);
  50   InstructionCost getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx,
  51                                       const APInt &Imm, Type *Ty,
  52                                       TTI::TargetCostKind CostKind);
  53
  54   TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
  55
  56   void getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
  57                                TTI::UnrollingPreferences &UP,
  58                                OptimizationRemarkEmitter *ORE);
  59
  60   void getPeelingPreferences(Loop *L, ScalarEvolution &SE,
  61                              TTI::PeelingPreferences &PP);
  62
  63   bool isLSRCostLess(const TargetTransformInfo::LSRCost &C1,
  64                      const TargetTransformInfo::LSRCost &C2);
  65   /// @}
  66
  67   /// \name Vector TTI Implementations
  68   /// @{
  69
  70   unsigned getNumberOfRegisters(unsigned ClassID) const;
  71   TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const;
  72
  73   unsigned getCacheLineSize() const override { return 256; }
  74   unsigned getPrefetchDistance() const override { return 4500; }
  75   unsigned getMinPrefetchStride(unsigned NumMemAccesses,
  76                                 unsigned NumStridedMemAccesses,
  77                                 unsigned NumPrefetches,
  78                                 bool HasCall) const override;
  79   bool enableWritePrefetching() const override { return true; }
  80
  81   bool hasDivRemOp(Type *DataType, bool IsSigned);
  82   bool prefersVectorizedAddressing() { return false; }
  83   bool LSRWithInstrQueries() { return true; }
  84   InstructionCost getScalarizationOverhead(VectorType *Ty,
  85                                            const APInt &DemandedElts,
  86                                            bool Insert, bool Extract,
  87                                            TTI::TargetCostKind CostKind,
  88                                            ArrayRef<Value *> VL = {});
  89   bool supportsEfficientVectorElementLoadStore() { return true; }
  90   bool enableInterleavedAccessVectorization() { return true; }
  91
  92   InstructionCost getArithmeticInstrCost(
  93       unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind,
  94       TTI::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None},
  95       TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None},
  96       ArrayRef<const Value *> Args = {}, const Instruction *CxtI = nullptr);
  97   InstructionCost getShuffleCost(TTI::ShuffleKind Kind, VectorType *Tp,
  98                                  ArrayRef<int> Mask,
  99                                  TTI::TargetCostKind CostKind, int Index,
 100                                  VectorType *SubTp,
 101                                  ArrayRef<const Value *> Args = {},
 102                                  const Instruction *CxtI = nullptr);
 103   unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy);
 104   unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy);
 105   unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst,
 106                                          const Instruction *I);
 107   InstructionCost getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
 108                                    TTI::CastContextHint CCH,
 109                                    TTI::TargetCostKind CostKind,
 110                                    const Instruction *I = nullptr);
 111   InstructionCost getCmpSelInstrCost(
 112       unsigned Opcode, Type *ValTy, Type *CondTy, CmpInst::Predicate VecPred,
 113       TTI::TargetCostKind CostKind,
 114       TTI::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None},
 115       TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None},
 116       const Instruction *I = nullptr);
 117   using BaseT::getVectorInstrCost;
 118   InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
 119                                      TTI::TargetCostKind CostKind,
 120                                      unsigned Index, Value *Op0, Value *Op1);
 121   bool isFoldableLoad(const LoadInst *Ld, const Instruction *&FoldedValue);
 122   InstructionCost
 123   getMemoryOpCost(unsigned Opcode, Type *Src, MaybeAlign Alignment,
 124                   unsigned AddressSpace, TTI::TargetCostKind CostKind,
 125                   TTI::OperandValueInfo OpInfo = {TTI::OK_AnyValue, TTI::OP_None},
 126                   const Instruction *I = nullptr);
 127
 128   InstructionCost getInterleavedMemoryOpCost(
 129       unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
 130       Align Alignment, unsigned AddressSpace, TTI::TargetCostKind CostKind,
 131       bool UseMaskForCond = false, bool UseMaskForGaps = false);
 132
 133   InstructionCost getArithmeticReductionCost(unsigned Opcode, VectorType *Ty,
 134                                              std::optional<FastMathFlags> FMF,
 135                                              TTI::TargetCostKind CostKind);
 136   InstructionCost getMinMaxReductionCost(Intrinsic::ID IID, VectorType *Ty,
 137                                          FastMathFlags FMF,
 138                                          TTI::TargetCostKind CostKind);
 139
 140   InstructionCost getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
 141                                         TTI::TargetCostKind CostKind);
 142
 143   bool shouldExpandReduction(const IntrinsicInst *II) const;
 144   /// @}
 145 };
 146
 147 } // end namespace llvm
 148
 149 #endif