MipsFrameLowering.h revision 223017 
1//==--- MipsFrameLowering.h - Define frame lowering for Mips --*- 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 MIPS_FRAMEINFO_H
15#define MIPS_FRAMEINFO_H
16
17#include "Mips.h"
18#include "MipsSubtarget.h"
19#include "llvm/Target/TargetFrameLowering.h"
20
21namespace llvm {
22  class MipsSubtarget;
23
24class MipsFrameLowering : public TargetFrameLowering {
25protected:
26  const MipsSubtarget &STI;
27
28public:
29  explicit MipsFrameLowering(const MipsSubtarget &sti)
30    : TargetFrameLowering(StackGrowsDown, 8, 0), STI(sti) {
31  }
32
33  bool targetHandlesStackFrameRounding() const;
34
35  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
36  /// the function.
37  void emitPrologue(MachineFunction &MF) const;
38  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
39
40  bool hasFP(const MachineFunction &MF) const;
41
42  void getInitialFrameState(std::vector<MachineMove> &Moves) const;
43
44  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
45                                            RegScavenger *RS) const;
46};
47
48} // End llvm namespace
49
50#endif
51