LLVM  9.0.0svn
MipsSEFrameLowering.h
Go to the documentation of this file.
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 
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 
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
This class represents lattice values for constants.
Definition: AllocatorList.h:23
const MipsSubtarget & STI
unsigned const TargetRegisterInfo * TRI
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const std::vector< CalleeSavedInfo > &CSI, const TargetRegisterInfo *TRI) const override
spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns tru...
bool hasReservedCallFrame(const MachineFunction &MF) const override
hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required, we reserve argument space for call sites in the function immediately on entry to the current function.
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
MipsSEFrameLowering(const MipsSubtarget &STI)
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
IRTranslator LLVM IR MI
int getFrameIndexReference(const MachineFunction &MF, int FI, unsigned &FrameReg) const override
getFrameIndexReference - This method should return the base register and offset used to reference a f...