HexagonFrameLowering.h revision dce4a407a24b04eebc6a376f8e62b41aaa7b071f 
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 "HexagonSubtarget.h"
15#include "llvm/Target/TargetFrameLowering.h"
16
17namespace llvm {
18
19class HexagonFrameLowering : public TargetFrameLowering {
20private:
21  const HexagonSubtarget &STI;
22  void determineFrameLayout(MachineFunction &MF) const;
23
24public:
25  explicit HexagonFrameLowering(const HexagonSubtarget &sti)
26    : TargetFrameLowering(StackGrowsDown, 8, 0), STI(sti) {
27  }
28
29  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
30  /// the function.
31  void emitPrologue(MachineFunction &MF) const override;
32  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
33  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
34                                 MachineBasicBlock::iterator MI,
35                                 const std::vector<CalleeSavedInfo> &CSI,
36                                 const TargetRegisterInfo *TRI) const override;
37
38  void
39  eliminateCallFramePseudoInstr(MachineFunction &MF,
40                                MachineBasicBlock &MBB,
41                                MachineBasicBlock::iterator I) const override;
42
43  bool
44  restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
45                              MachineBasicBlock::iterator MI,
46                              const std::vector<CalleeSavedInfo> &CSI,
47                              const TargetRegisterInfo *TRI) const override;
48  int getFrameIndexOffset(const MachineFunction &MF, int FI) const override;
49  bool hasFP(const MachineFunction &MF) const override;
50  bool hasTailCall(MachineBasicBlock &MBB) const;
51};
52
53} // End llvm namespace
54
55#endif
56