//===- IA64RegisterInfo.h - IA64 Register Information Impl ------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file was developed by Duraid Madina and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the IA64 implementation of the MRegisterInfo class.
//
//===----------------------------------------------------------------------===//

#ifndef IA64REGISTERINFO_H
#define IA64REGISTERINFO_H

#include "llvm/Target/MRegisterInfo.h"
#include "IA64GenRegisterInfo.h.inc"

namespace llvm { class llvm::Type; }

namespace llvm {

class TargetInstrInfo;

struct IA64RegisterInfo : public IA64GenRegisterInfo {
  const TargetInstrInfo &TII;

  IA64RegisterInfo(const TargetInstrInfo &tii);

  /// Code Generation virtual methods...
  void storeRegToStackSlot(MachineBasicBlock &MBB,
                           MachineBasicBlock::iterator MI,
                           unsigned SrcReg, int FrameIndex,
                           const TargetRegisterClass *RC) const;

  void loadRegFromStackSlot(MachineBasicBlock &MBB,
                            MachineBasicBlock::iterator MI,
                            unsigned DestReg, int FrameIndex,
                            const TargetRegisterClass *RC) const;

  void copyRegToReg(MachineBasicBlock &MBB,
                    MachineBasicBlock::iterator MI,
                    unsigned DestReg, unsigned SrcReg,
                    const TargetRegisterClass *RC) const;

  void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
                     unsigned DestReg, const MachineInstr *Orig) const;

  const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;

  const TargetRegisterClass* const* getCalleeSavedRegClasses(
                                     const MachineFunction *MF = 0) const;

  BitVector getReservedRegs(const MachineFunction &MF) const;

  bool hasFP(const MachineFunction &MF) const;

  void eliminateCallFramePseudoInstr(MachineFunction &MF,
                                     MachineBasicBlock &MBB,
                                     MachineBasicBlock::iterator MI) const;

  void eliminateFrameIndex(MachineBasicBlock::iterator MI,
                           int SPAdj, RegScavenger *RS = NULL) const;

  void emitPrologue(MachineFunction &MF) const;
  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;

  // Debug information queries.
  unsigned getRARegister() const;
  unsigned getFrameRegister(MachineFunction &MF) const;

  // Exception handling queries.
  unsigned getEHExceptionRegister() const;
  unsigned getEHHandlerRegister() const;
};

} // End llvm namespace

#endif