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//===-- LanaiFrameLowering.h - Define frame lowering for Lanai --*- 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
//
//===----------------------------------------------------------------------===//
//
// This class implements Lanai-specific bits of TargetFrameLowering class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H
#define LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H
#include "llvm/CodeGen/TargetFrameLowering.h"
namespace llvm {
class BitVector;
class LanaiSubtarget;
class LanaiFrameLowering : public TargetFrameLowering {
private:
void determineFrameLayout(MachineFunction &MF) const;
void replaceAdjDynAllocPseudo(MachineFunction &MF) const;
protected:
const LanaiSubtarget &STI;
public:
explicit LanaiFrameLowering(const LanaiSubtarget &Subtarget)
: TargetFrameLowering(StackGrowsDown,
/*StackAlignment=*/8,
/*LocalAreaOffset=*/0),
STI(Subtarget) {}
// emitProlog/emitEpilog - These methods insert prolog and epilog code into
// the function.
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
MachineBasicBlock::iterator
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
bool hasFP(const MachineFunction & /*MF*/) const override { return true; }
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
RegScavenger *RS = nullptr) const override;
};
} // namespace llvm
#endif // LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H
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