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 LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
15#define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
16
17#include "Mips.h"
18#include "llvm/Target/TargetFrameLowering.h"
19
20namespace llvm {
21  class MipsSubtarget;
22
23class MipsFrameLowering : public TargetFrameLowering {
24protected:
25  const MipsSubtarget &STI;
26
27public:
28  explicit MipsFrameLowering(const MipsSubtarget &sti, unsigned Alignment)
29    : TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) {}
30
31  static const MipsFrameLowering *create(const MipsSubtarget &ST);
32
33  bool hasFP(const MachineFunction &MF) const override;
34
35  bool hasBP(const MachineFunction &MF) const;
36
37  bool isFPCloseToIncomingSP() const override { return false; }
38
39  void
40  eliminateCallFramePseudoInstr(MachineFunction &MF,
41                                MachineBasicBlock &MBB,
42                                MachineBasicBlock::iterator I) const override;
43
44protected:
45  uint64_t estimateStackSize(const MachineFunction &MF) const;
46};
47
48/// Create MipsFrameLowering objects.
49const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST);
50const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST);
51
52} // End llvm namespace
53
54#endif
55