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 public:
  32   explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F)
  33       : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
  34         TLI(ST->getTargetLowering()) {}
  35
  36   /// \name Scalar TTI Implementations
  37   /// @{
  38
  39   unsigned getInliningThresholdMultiplier() { return 3; }
  40
  41   int getIntImmCost(const APInt &Imm, Type *Ty);
  42
  43   int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
  44   int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
  45                     Type *Ty);
  46
  47   TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
  48
  49   void getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
  50                                TTI::UnrollingPreferences &UP);
  51
  52   bool isLSRCostLess(TargetTransformInfo::LSRCost &C1,
  53                      TargetTransformInfo::LSRCost &C2);
  54   /// @}
  55
  56   /// \name Vector TTI Implementations
  57   /// @{
  58
  59   unsigned getNumberOfRegisters(unsigned ClassID) const;
  60   unsigned getRegisterBitWidth(bool Vector) const;
  61
  62   unsigned getCacheLineSize() const override { return 256; }
  63   unsigned getPrefetchDistance() const override { return 2000; }
  64   unsigned getMinPrefetchStride() const override { return 2048; }
  65
  66   bool hasDivRemOp(Type *DataType, bool IsSigned);
  67   bool prefersVectorizedAddressing() { return false; }
  68   bool LSRWithInstrQueries() { return true; }
  69   bool supportsEfficientVectorElementLoadStore() { return true; }
  70   bool enableInterleavedAccessVectorization() { return true; }
  71
  72   int getArithmeticInstrCost(
  73       unsigned Opcode, Type *Ty,
  74       TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
  75       TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
  76       TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
  77       TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
  78       ArrayRef<const Value *> Args = ArrayRef<const Value *>());
  79   int getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, Type *SubTp);
  80   unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy);
  81   unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy);
  82   unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst,
  83                                          const Instruction *I);
  84   int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
  85                        const Instruction *I = nullptr);
  86   int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
  87                          const Instruction *I = nullptr);
  88   int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
  89   bool isFoldableLoad(const LoadInst *Ld, const Instruction *&FoldedValue);
  90   int getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
  91                       unsigned AddressSpace, const Instruction *I = nullptr);
  92
  93   int getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy,
  94                                  unsigned Factor,
  95                                  ArrayRef<unsigned> Indices,
  96                                  unsigned Alignment,
  97                                  unsigned AddressSpace,
  98                                  bool UseMaskForCond = false,
  99                                  bool UseMaskForGaps = false);
 100
 101   int getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
 102                             ArrayRef<Value *> Args, FastMathFlags FMF,
 103                             unsigned VF = 1);
 104   int getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
 105                             ArrayRef<Type *> Tys, FastMathFlags FMF,
 106                             unsigned ScalarizationCostPassed = UINT_MAX);
 107   /// @}
 108 };
 109
 110 } // end namespace llvm
 111
 112 #endif