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 *RC) const;
  52
  53   void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
  54                      unsigned DestReg, const MachineInstr *Orig) const;
  55
  56   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  57
  58   const TargetRegisterClass* const* getCalleeSavedRegClasses(
  59                                      const MachineFunction *MF = 0) const;
  60
  61   BitVector getReservedRegs(const MachineFunction &MF) const;
  62
  63   bool hasFP(const MachineFunction &MF) const;
  64
  65   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  66                                      MachineBasicBlock &MBB,
  67                                      MachineBasicBlock::iterator I) const;
  68
  69   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  70                            int SPAdj, RegScavenger *RS = NULL) const;
  71
  72   //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  73
  74   void emitPrologue(MachineFunction &MF) const;
  75   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  76
  77   // Debug information queries.
  78   unsigned getRARegister() const;
  79   unsigned getFrameRegister(MachineFunction &MF) const;
  80
  81   // Exception handling queries.
  82   unsigned getEHExceptionRegister() const;
  83   unsigned getEHHandlerRegister() const;
  84
  85   static std::string getPrettyName(unsigned reg);
  86 };
  87
  88 } // end namespace llvm
  89
  90 #endif