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//===- XtensaFrameLowering.h - Define frame lowering for Xtensa --*- C++ -*-==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===-----------------------------------------------------------------------==//
#ifndef LLVM_LIB_TARGET_XTENSA_XTENSAFRAMELOWERING_H
#define LLVM_LIB_TARGET_XTENSA_XTENSAFRAMELOWERING_H
#include "llvm/CodeGen/TargetFrameLowering.h"
namespace llvm {
class XtensaTargetMachine;
class XtensaSubtarget;
class XtensaInstrInfo;
class XtensaRegisterInfo;
class XtensaFrameLowering : public TargetFrameLowering {
const XtensaInstrInfo &TII;
const XtensaRegisterInfo *TRI;
public:
XtensaFrameLowering(const XtensaSubtarget &STI);
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
/// the function.
void emitPrologue(MachineFunction &, MachineBasicBlock &) const override;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
MachineBasicBlock::iterator
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
ArrayRef<CalleeSavedInfo> CSI,
const TargetRegisterInfo *TRI) const override;
bool
restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
MutableArrayRef<CalleeSavedInfo> CSI,
const TargetRegisterInfo *TRI) const override;
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
RegScavenger *RS) const override;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS) const override;
protected:
bool hasFPImpl(const MachineFunction &MF) const override;
};
} // namespace llvm
#endif /* LLVM_LIB_TARGET_XTENSA_XTENSAFRAMELOWERING_H */
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