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//=- MBlazeFrameLowering.h - Define frame lowering for MicroBlaze -*- C++ -*-=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//
//===----------------------------------------------------------------------===//
#ifndef MBLAZE_FRAMEINFO_H
#define MBLAZE_FRAMEINFO_H
#include "MBlaze.h"
#include "MBlazeSubtarget.h"
#include "llvm/Target/TargetFrameLowering.h"
namespace llvm {
class MBlazeSubtarget;
class MBlazeFrameLowering : public TargetFrameLowering {
protected:
const MBlazeSubtarget &STI;
public:
explicit MBlazeFrameLowering(const MBlazeSubtarget &sti)
: TargetFrameLowering(TargetFrameLowering::StackGrowsUp, 4, 0), STI(sti) {
}
/// targetHandlesStackFrameRounding - Returns true if the target is
/// responsible for rounding up the stack frame (probably at emitPrologue
/// time).
bool targetHandlesStackFrameRounding() const { return true; }
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
/// the function.
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
bool hasFP(const MachineFunction &MF) const;
int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
virtual void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const;
};
} // End llvm namespace
#endif
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