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 getIntImmCostInst(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
44   int getIntImmCostIntrin(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 4500; }
64   unsigned getMinPrefetchStride(unsigned NumMemAccesses,
65                                 unsigned NumStridedMemAccesses,
66                                 unsigned NumPrefetches,
67                                 bool HasCall) const override;
68   bool enableWritePrefetching() const override { return true; }
69 
70   bool hasDivRemOp(Type *DataType, bool IsSigned);
71   bool prefersVectorizedAddressing() { return false; }
72   bool LSRWithInstrQueries() { return true; }
73   bool supportsEfficientVectorElementLoadStore() { return true; }
74   bool enableInterleavedAccessVectorization() { return true; }
75 
76   int getArithmeticInstrCost(
77       unsigned Opcode, Type *Ty,
78       TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
79       TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
80       TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
81       TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
82       ArrayRef<const Value *> Args = ArrayRef<const Value *>(),
83       const Instruction *CxtI = nullptr);
84   int getShuffleCost(TTI::ShuffleKind Kind, VectorType *Tp, int Index,
85                      VectorType *SubTp);
86   unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy);
87   unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy);
88   unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst,
89                                          const Instruction *I);
90   int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
91                        const Instruction *I = nullptr);
92   int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
93                          const Instruction *I = nullptr);
94   int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
95   bool isFoldableLoad(const LoadInst *Ld, const Instruction *&FoldedValue);
96   int getMemoryOpCost(unsigned Opcode, Type *Src, MaybeAlign Alignment,
97                       unsigned AddressSpace, const Instruction *I = nullptr);
98 
99   int getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy,
100                                  unsigned Factor,
101                                  ArrayRef<unsigned> Indices,
102                                  unsigned Alignment,
103                                  unsigned AddressSpace,
104                                  bool UseMaskForCond = false,
105                                  bool UseMaskForGaps = false);
106 
107   int getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
108                             ArrayRef<Value *> Args, FastMathFlags FMF,
109                             unsigned VF = 1, const Instruction *I = nullptr);
110   int getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy, ArrayRef<Type *> Tys,
111                             FastMathFlags FMF,
112                             unsigned ScalarizationCostPassed = UINT_MAX,
113                             const Instruction *I = nullptr);
114   /// @}
115 };
116 
117 } // end namespace llvm
118 
119 #endif
120