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 
14 namespace llvm {
15 
16 class MachineBasicBlock;
17 class MachineFunction;
18 class MipsSubtarget;
19 
20 class MipsSEFrameLowering : public MipsFrameLowering {
21 public:
22   explicit MipsSEFrameLowering(const MipsSubtarget &STI);
23 
24   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
25   /// the function.
26   void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
27   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
28 
29   StackOffset getFrameIndexReference(const MachineFunction &MF, int FI,
30                                      Register &FrameReg) const override;
31 
32   bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
33                                  MachineBasicBlock::iterator MI,
34                                  ArrayRef<CalleeSavedInfo> CSI,
35                                  const TargetRegisterInfo *TRI) const override;
36 
37   bool hasReservedCallFrame(const MachineFunction &MF) const override;
38 
39   void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
40                             RegScavenger *RS) const override;
41 
42 private:
43   void emitInterruptEpilogueStub(MachineFunction &MF,
44                                  MachineBasicBlock &MBB) const;
45   void emitInterruptPrologueStub(MachineFunction &MF,
46                                  MachineBasicBlock &MBB) const;
47 };
48 
49 } // end namespace llvm
50 
51 #endif // LLVM_LIB_TARGET_MIPS_MIPSSEFRAMELOWERING_H
52