1//===-- AVRFrameLowering.h - Define frame lowering for AVR ------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_AVR_FRAME_LOWERING_H
10#define LLVM_AVR_FRAME_LOWERING_H
11
12#include "llvm/CodeGen/TargetFrameLowering.h"
13
14namespace llvm {
15
16/// Utilities for creating function call frames.
17class AVRFrameLowering : public TargetFrameLowering {
18public:
19 explicit AVRFrameLowering();
20
21public:
22 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
23 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
24 bool hasFP(const MachineFunction &MF) const override;
25 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
26 MachineBasicBlock::iterator MI,
27 ArrayRef<CalleeSavedInfo> CSI,
28 const TargetRegisterInfo *TRI) const override;
29 bool
30 restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
31 MachineBasicBlock::iterator MI,
32 MutableArrayRef<CalleeSavedInfo> CSI,
33 const TargetRegisterInfo *TRI) const override;
34 bool hasReservedCallFrame(const MachineFunction &MF) const override;
35 bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override;
36 void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
37 RegScavenger *RS = nullptr) const override;
38 MachineBasicBlock::iterator
39 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
40 MachineBasicBlock::iterator MI) const override;
41};
42
43} // end namespace llvm
44
45#endif // LLVM_AVR_FRAME_LOWERING_H
46