MipsFrameLowering.h revision 1d53f1bbab0573289a9856b7da5e9977cad848d4 
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, sti.hasMips64() ? 16 : 8, 0),
31      STI(sti) {
32  }
33
34  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
35  /// the function.
36  void emitPrologue(MachineFunction &MF) const;
37  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
38
39  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
40                                 MachineBasicBlock::iterator MI,
41                                 const std::vector<CalleeSavedInfo> &CSI,
42                                 const TargetRegisterInfo *TRI) const;
43
44  bool hasFP(const MachineFunction &MF) const;
45
46  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
47                                            RegScavenger *RS) const;
48};
49
50} // End llvm namespace
51
52#endif
53