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 loadRegFromStackSlot(MachineBasicBlock &MBB,
  37                             MachineBasicBlock::iterator MBBI,
  38                             unsigned DestReg, int FrameIndex,
  39                             const TargetRegisterClass *RC) const;
  40
  41   MachineInstr* foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
  42                                   int FrameIndex) const;
  43
  44   MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
  45                                   MachineInstr* LoadMI) const {
  46     return 0;
  47   }
  48
  49   void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
  50                     unsigned DestReg, unsigned SrcReg,
  51                     const TargetRegisterClass *DestRC,
  52                     const TargetRegisterClass *SrcRC) const;
  53
  54   void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
  55                      unsigned DestReg, const MachineInstr *Orig) const;
  56
  57   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  58
  59   const TargetRegisterClass* const* getCalleeSavedRegClasses(
  60                                      const MachineFunction *MF = 0) const;
  61
  62   BitVector getReservedRegs(const MachineFunction &MF) const;
  63
  64   bool hasFP(const MachineFunction &MF) const;
  65
  66   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  67                                      MachineBasicBlock &MBB,
  68                                      MachineBasicBlock::iterator I) const;
  69
  70   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  71                            int SPAdj, RegScavenger *RS = NULL) const;
  72
  73   //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  74
  75   void emitPrologue(MachineFunction &MF) const;
  76   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  77
  78   // Debug information queries.
  79   unsigned getRARegister() const;
  80   unsigned getFrameRegister(MachineFunction &MF) const;
  81
  82   // Exception handling queries.
  83   unsigned getEHExceptionRegister() const;
  84   unsigned getEHHandlerRegister() const;
  85
  86   static std::string getPrettyName(unsigned reg);
  87 };
  88
  89 } // end namespace llvm
  90
  91 #endif