1 //===- MipsSEFrameLowering.h - Mips32/64 frame lowering ---------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_LIB_TARGET_MIPS_MIPSSEFRAMELOWERING_H
10 #define LLVM_LIB_TARGET_MIPS_MIPSSEFRAMELOWERING_H
11 
12 #include "MipsFrameLowering.h"
13 #include <vector>
14 
15 namespace llvm {
16 
17 class MachineBasicBlock;
18 class MachineFunction;
19 class MipsSubtarget;
20 
21 class MipsSEFrameLowering : public MipsFrameLowering {
22 public:
23   explicit MipsSEFrameLowering(const MipsSubtarget &STI);
24 
25   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
26   /// the function.
27   void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
28   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
29 
30   int getFrameIndexReference(const MachineFunction &MF, int FI,
31                              unsigned &FrameReg) const override;
32 
33   bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
34                                  MachineBasicBlock::iterator MI,
35                                  const std::vector<CalleeSavedInfo> &CSI,
36                                  const TargetRegisterInfo *TRI) const override;
37 
38   bool hasReservedCallFrame(const MachineFunction &MF) const override;
39 
40   void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
41                             RegScavenger *RS) const override;
42 
43 private:
44   void emitInterruptEpilogueStub(MachineFunction &MF,
45                                  MachineBasicBlock &MBB) const;
46   void emitInterruptPrologueStub(MachineFunction &MF,
47                                  MachineBasicBlock &MBB) const;
48 };
49 
50 } // end namespace llvm
51 
52 #endif // LLVM_LIB_TARGET_MIPS_MIPSSEFRAMELOWERING_H
53