MSP430FrameLowering.h revision 700ed80d3da5e98e05ceb90e9bfb66058581a6db 
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 "MSP430Subtarget.h"
19#include "llvm/Target/TargetFrameLowering.h"
20
21namespace llvm {
22  class MSP430Subtarget;
23
24class MSP430FrameLowering : public TargetFrameLowering {
25protected:
26  const MSP430Subtarget &STI;
27
28public:
29  explicit MSP430FrameLowering(const MSP430Subtarget &sti)
30    : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2), STI(sti) {
31  }
32
33  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
34  /// the function.
35  void emitPrologue(MachineFunction &MF) const;
36  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
37
38  void eliminateCallFramePseudoInstr(MachineFunction &MF,
39                                     MachineBasicBlock &MBB,
40                                     MachineBasicBlock::iterator I) const;
41
42  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
43                                 MachineBasicBlock::iterator MI,
44                                 const std::vector<CalleeSavedInfo> &CSI,
45                                 const TargetRegisterInfo *TRI) const;
46  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
47                                   MachineBasicBlock::iterator MI,
48                                   const std::vector<CalleeSavedInfo> &CSI,
49                                   const TargetRegisterInfo *TRI) const;
50
51  bool hasFP(const MachineFunction &MF) const;
52  bool hasReservedCallFrame(const MachineFunction &MF) const;
53  void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
54};
55
56} // End llvm namespace
57
58#endif
59