lib/Target/Alpha/AlphaRegisterInfo.h

   1 //===- AlphaRegisterInfo.h - Alpha Register Information Impl ----*- 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 //
  10 // This file contains the Alpha implementation of the TargetRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef ALPHAREGISTERINFO_H
  15 #define ALPHAREGISTERINFO_H
  16
  17 #include "llvm/Target/TargetRegisterInfo.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   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  32
  33   BitVector getReservedRegs(const MachineFunction &MF) const;
  34
  35   bool hasFP(const MachineFunction &MF) const;
  36
  37   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  38                                      MachineBasicBlock &MBB,
  39                                      MachineBasicBlock::iterator I) const;
  40
  41   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  42                            int SPAdj, RegScavenger *RS = NULL) const;
  43
  44   //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  45
  46   void emitPrologue(MachineFunction &MF) const;
  47   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  48
  49   // Debug information queries.
  50   unsigned getRARegister() const;
  51   unsigned getFrameRegister(const MachineFunction &MF) const;
  52
  53   // Exception handling queries.
  54   unsigned getEHExceptionRegister() const;
  55   unsigned getEHHandlerRegister() const;
  56
  57   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
  58
  59   static std::string getPrettyName(unsigned reg);
  60
  61 private:
  62   mutable int curgpdist;
  63 };
  64
  65 } // end namespace llvm
  66
  67 #endif