1//=- HexagonFrameLowering.h - Define frame lowering for Hexagon --*- 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#ifndef HEXAGON_FRAMEINFO_H
11#define HEXAGON_FRAMEINFO_H
12
13#include "Hexagon.h"
14#include "llvm/Target/TargetFrameLowering.h"
15
16namespace llvm {
17
18class HexagonFrameLowering : public TargetFrameLowering {
19private:
20  void determineFrameLayout(MachineFunction &MF) const;
21
22public:
23  explicit HexagonFrameLowering() : TargetFrameLowering(StackGrowsDown, 8, 0) {}
24
25  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
26  /// the function.
27  void emitPrologue(MachineFunction &MF) const override;
28  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
29  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
30                                 MachineBasicBlock::iterator MI,
31                                 const std::vector<CalleeSavedInfo> &CSI,
32                                 const TargetRegisterInfo *TRI) const override;
33
34  void
35  eliminateCallFramePseudoInstr(MachineFunction &MF,
36                                MachineBasicBlock &MBB,
37                                MachineBasicBlock::iterator I) const override;
38
39  bool
40  restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
41                              MachineBasicBlock::iterator MI,
42                              const std::vector<CalleeSavedInfo> &CSI,
43                              const TargetRegisterInfo *TRI) const override;
44  int getFrameIndexOffset(const MachineFunction &MF, int FI) const override;
45  bool hasFP(const MachineFunction &MF) const override;
46  bool hasTailCall(MachineBasicBlock &MBB) const;
47};
48
49} // End llvm namespace
50
51#endif
52