1//==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- 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//
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_MSP430_MSP430FRAMELOWERING_H
14#define LLVM_LIB_TARGET_MSP430_MSP430FRAMELOWERING_H
15
16#include "MSP430.h"
17#include "llvm/CodeGen/TargetFrameLowering.h"
18
19namespace llvm {
20class MSP430FrameLowering : public TargetFrameLowering {
21protected:
22
23public:
24  explicit MSP430FrameLowering()
25      : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(2), -2,
26                            Align(2)) {}
27
28  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
29  /// the function.
30  void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
31  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
32
33  MachineBasicBlock::iterator
34  eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
35                                MachineBasicBlock::iterator I) const override;
36
37  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
38                                 MachineBasicBlock::iterator MI,
39                                 const std::vector<CalleeSavedInfo> &CSI,
40                                 const TargetRegisterInfo *TRI) const override;
41  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
42                                  MachineBasicBlock::iterator MI,
43                                  std::vector<CalleeSavedInfo> &CSI,
44                                  const TargetRegisterInfo *TRI) const override;
45
46  bool hasFP(const MachineFunction &MF) const override;
47  bool hasReservedCallFrame(const MachineFunction &MF) const override;
48  void processFunctionBeforeFrameFinalized(MachineFunction &MF,
49                                     RegScavenger *RS = nullptr) const override;
50};
51
52} // End llvm namespace
53
54#endif
55