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//===- X86RegisterInfo.h - X86 Register Information Impl --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the X86 implementation of the MRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef X86REGISTERINFO_H
#define X86REGISTERINFO_H
#include "llvm/Target/MRegisterInfo.h"
class llvm::Type;
#include "X86GenRegisterInfo.h.inc"
namespace llvm {
struct X86RegisterInfo : public X86GenRegisterInfo {
X86RegisterInfo();
const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
/// Code Generation virtual methods...
int storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, int FrameIndex,
const TargetRegisterClass *RC) const;
int loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIndex,
const TargetRegisterClass *RC) const;
int copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const;
/// foldMemoryOperand - If this target supports it, fold a load or store of
/// the specified stack slot into the specified machine instruction for the
/// specified operand. If this is possible, the target should perform the
/// folding and return true, otherwise it should return false. If it folds
/// the instruction, it is likely that the MachineInstruction the iterator
/// references has been changed.
virtual MachineInstr* foldMemoryOperand(MachineBasicBlock::iterator MI,
unsigned OpNum,
int FrameIndex) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const;
void eliminateFrameIndex(MachineFunction &MF,
MachineBasicBlock::iterator MI) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
};
} // End llvm namespace
#endif
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