//===- X86RegisterInfo.h - X86 Register Information Impl ----------*-C++-*-===//
//
// This file contains the X86 implementation of the MRegisterInfo class.
//
//===----------------------------------------------------------------------===//

#ifndef X86REGISTERINFO_H
#define X86REGISTERINFO_H

#include "llvm/Target/MRegisterInfo.h"

class Type;

struct X86RegisterInfo : public MRegisterInfo {
  X86RegisterInfo();

  void storeReg2RegOffset(MachineBasicBlock &MBB,
			  MachineBasicBlock::iterator &MBBI,
			  unsigned SrcReg, unsigned DestReg, unsigned ImmOffset,
			  const TargetRegisterClass *RC) const;

  void loadRegOffset2Reg(MachineBasicBlock &MBB,
			 MachineBasicBlock::iterator &MBBI,
			 unsigned DestReg, unsigned SrcReg, unsigned ImmOffset,
			 const TargetRegisterClass *RC) const;

  void moveReg2Reg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
		   unsigned DestReg, unsigned SrcReg,
		   const TargetRegisterClass *RC) const;

  void moveImm2Reg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
		   unsigned DestReg, unsigned Imm,
		   const TargetRegisterClass *RC) const;

  unsigned getFramePointer() const;
  unsigned getStackPointer() const;

  const unsigned* getCalleeSaveRegs() const;
  const unsigned* getCallerSaveRegs() const;

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

  /// Returns register class appropriate for input SSA register
  /// 
  const TargetRegisterClass *getClassForReg(unsigned Reg) const;

  const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
};

#endif