1 //===-- AVRFrameLowering.h - Define frame lowering for AVR ------*- 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 LLVM_AVR_FRAME_LOWERING_H 11 #define LLVM_AVR_FRAME_LOWERING_H 12 13 #include "llvm/Target/TargetFrameLowering.h" 14 15 namespace llvm { 16 17 /// Utilities for creating function call frames. 18 class AVRFrameLowering : public TargetFrameLowering { 19 public: 20 explicit AVRFrameLowering(); 21 22 public: 23 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 24 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 25 bool hasFP(const MachineFunction &MF) const override; 26 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 27 MachineBasicBlock::iterator MI, 28 const std::vector<CalleeSavedInfo> &CSI, 29 const TargetRegisterInfo *TRI) const override; 30 bool 31 restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 32 MachineBasicBlock::iterator MI, 33 const std::vector<CalleeSavedInfo> &CSI, 34 const TargetRegisterInfo *TRI) const override; 35 bool hasReservedCallFrame(const MachineFunction &MF) const override; 36 bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override; 37 void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, 38 RegScavenger *RS = nullptr) const override; 39 MachineBasicBlock::iterator 40 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, 41 MachineBasicBlock::iterator MI) const override; 42 }; 43 44 } // end namespace llvm 45 46 #endif // LLVM_AVR_FRAME_LOWERING_H 47
