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//===-- SparcFrameLowering.h - Define frame lowering for Sparc --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//
//===----------------------------------------------------------------------===//
#ifndef SPARC_FRAMEINFO_H
#define SPARC_FRAMEINFO_H
#include "Sparc.h"
#include "SparcSubtarget.h"
#include "llvm/Target/TargetFrameLowering.h"
namespace llvm {
class SparcSubtarget;
class SparcFrameLowering : public TargetFrameLowering {
const SparcSubtarget &SubTarget;
public:
explicit SparcFrameLowering(const SparcSubtarget &ST)
: TargetFrameLowering(TargetFrameLowering::StackGrowsDown,
ST.is64Bit() ? 16 : 8, 0, ST.is64Bit() ? 16 : 8),
SubTarget(ST) {}
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
/// the function.
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
bool hasReservedCallFrame(const MachineFunction &MF) const;
bool hasFP(const MachineFunction &MF) const;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS = NULL) const;
private:
// Remap input registers to output registers for leaf procedure.
void remapRegsForLeafProc(MachineFunction &MF) const;
// Returns true if MF is a leaf procedure.
bool isLeafProc(MachineFunction &MF) const;
};
} // End llvm namespace
#endif
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