lib/Target/Alpha/AlphaRegisterInfo.h

   1 //===- AlphaRegisterInfo.h - Alpha Register Information Impl ----*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by the LLVM research group and is distributed under
   6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the Alpha implementation of the MRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef ALPHAREGISTERINFO_H
  15 #define ALPHAREGISTERINFO_H
  16
  17 #include "llvm/Target/MRegisterInfo.h"
  18 #include "AlphaGenRegisterInfo.h.inc"
  19
  20 namespace llvm {
  21
  22 class TargetInstrInfo;
  23 class Type;
  24
  25 struct AlphaRegisterInfo : public AlphaGenRegisterInfo {
  26   const TargetInstrInfo &TII;
  27
  28   AlphaRegisterInfo(const TargetInstrInfo &tii);
  29
  30   /// Code Generation virtual methods...
  31   void storeRegToStackSlot(MachineBasicBlock &MBB,
  32                            MachineBasicBlock::iterator MBBI,
  33                            unsigned SrcReg, int FrameIndex,
  34                            const TargetRegisterClass *RC) const;
  35
  36   void storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
  37                       SmallVectorImpl<MachineOperand> &Addr,
  38                       const TargetRegisterClass *RC,
  39                       SmallVectorImpl<MachineInstr*> &NewMIs) const;
  40
  41   void loadRegFromStackSlot(MachineBasicBlock &MBB,
  42                             MachineBasicBlock::iterator MBBI,
  43                             unsigned DestReg, int FrameIndex,
  44                             const TargetRegisterClass *RC) const;
  45
  46   void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
  47                        SmallVectorImpl<MachineOperand> &Addr,
  48                        const TargetRegisterClass *RC,
  49                        SmallVectorImpl<MachineInstr*> &NewMIs) const;
  50
  51   MachineInstr* foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
  52                                   int FrameIndex) const;
  53
  54   MachineInstr* foldMemoryOperand(MachineInstr* MI,
  55                                   SmallVectorImpl<unsigned> &UseOps,
  56                                   int FrameIndex) const {
  57     return 0;
  58   }
  59
  60   MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
  61                                   MachineInstr* LoadMI) const {
  62     return 0;
  63   }
  64
  65   MachineInstr* foldMemoryOperand(MachineInstr* MI,
  66                                   SmallVectorImpl<unsigned> &UseOps,
  67                                   MachineInstr* LoadMI) const {
  68     return 0;
  69   }
  70
  71   void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
  72                     unsigned DestReg, unsigned SrcReg,
  73                     const TargetRegisterClass *DestRC,
  74                     const TargetRegisterClass *SrcRC) const;
  75
  76   void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
  77                      unsigned DestReg, const MachineInstr *Orig) const;
  78
  79   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  80
  81   const TargetRegisterClass* const* getCalleeSavedRegClasses(
  82                                      const MachineFunction *MF = 0) const;
  83
  84   BitVector getReservedRegs(const MachineFunction &MF) const;
  85
  86   bool hasFP(const MachineFunction &MF) const;
  87
  88   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  89                                      MachineBasicBlock &MBB,
  90                                      MachineBasicBlock::iterator I) const;
  91
  92   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  93                            int SPAdj, RegScavenger *RS = NULL) const;
  94
  95   //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  96
  97   void emitPrologue(MachineFunction &MF) const;
  98   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  99
 100   // Debug information queries.
 101   unsigned getRARegister() const;
 102   unsigned getFrameRegister(MachineFunction &MF) const;
 103
 104   // Exception handling queries.
 105   unsigned getEHExceptionRegister() const;
 106   unsigned getEHHandlerRegister() const;
 107
 108   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
 109
 110   static std::string getPrettyName(unsigned reg);
 111 };
 112
 113 } // end namespace llvm
 114
 115 #endif