MSP430FrameLowering.h revision cd81d94322a39503e4a3e87b6ee03d4fcb3465fb 
1//==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- C++ -*--==//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef MSP430_FRAMEINFO_H
15#define MSP430_FRAMEINFO_H
16
17#include "MSP430.h"
18#include "llvm/Target/TargetFrameLowering.h"
19
20namespace llvm {
21class MSP430FrameLowering : public TargetFrameLowering {
22protected:
23
24public:
25  explicit MSP430FrameLowering()
26      : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2, 2) {}
27
28  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
29  /// the function.
30  void emitPrologue(MachineFunction &MF) const override;
31  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
32
33  void eliminateCallFramePseudoInstr(MachineFunction &MF,
34                                  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                                  const 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