PPCTargetTransformInfo.h revision 288943 
1//===-- PPCTargetTransformInfo.h - PPC specific TTI -------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9/// \file
10/// This file a TargetTransformInfo::Concept conforming object specific to the
11/// PPC 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.
14///
15//===----------------------------------------------------------------------===//
16
17#ifndef LLVM_LIB_TARGET_POWERPC_PPCTARGETTRANSFORMINFO_H
18#define LLVM_LIB_TARGET_POWERPC_PPCTARGETTRANSFORMINFO_H
19
20#include "PPC.h"
21#include "PPCTargetMachine.h"
22#include "llvm/Analysis/TargetTransformInfo.h"
23#include "llvm/CodeGen/BasicTTIImpl.h"
24#include "llvm/Target/TargetLowering.h"
25
26namespace llvm {
27
28class PPCTTIImpl : public BasicTTIImplBase<PPCTTIImpl> {
29  typedef BasicTTIImplBase<PPCTTIImpl> BaseT;
30  typedef TargetTransformInfo TTI;
31  friend BaseT;
32
33  const PPCSubtarget *ST;
34  const PPCTargetLowering *TLI;
35
36  const PPCSubtarget *getST() const { return ST; }
37  const PPCTargetLowering *getTLI() const { return TLI; }
38
39public:
40  explicit PPCTTIImpl(const PPCTargetMachine *TM, Function &F)
41      : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
42        TLI(ST->getTargetLowering()) {}
43
44  // Provide value semantics. MSVC requires that we spell all of these out.
45  PPCTTIImpl(const PPCTTIImpl &Arg)
46      : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {}
47  PPCTTIImpl(PPCTTIImpl &&Arg)
48      : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)),
49        TLI(std::move(Arg.TLI)) {}
50
51  /// \name Scalar TTI Implementations
52  /// @{
53
54  using BaseT::getIntImmCost;
55  unsigned getIntImmCost(const APInt &Imm, Type *Ty);
56
57  unsigned getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
58                         Type *Ty);
59  unsigned getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
60                         Type *Ty);
61
62  TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
63  void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP);
64
65  /// @}
66
67  /// \name Vector TTI Implementations
68  /// @{
69
70  bool enableAggressiveInterleaving(bool LoopHasReductions);
71  unsigned getNumberOfRegisters(bool Vector);
72  unsigned getRegisterBitWidth(bool Vector);
73  unsigned getMaxInterleaveFactor(unsigned VF);
74  unsigned getArithmeticInstrCost(
75      unsigned Opcode, Type *Ty,
76      TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
77      TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
78      TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
79      TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None);
80  unsigned getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index,
81                          Type *SubTp);
82  unsigned getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src);
83  unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy);
84  unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
85  unsigned getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
86                           unsigned AddressSpace);
87
88  /// @}
89};
90
91} // end namespace llvm
92
93#endif
94