1 //==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- 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 // 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef MSP430_FRAMEINFO_H 15 #define MSP430_FRAMEINFO_H 16 17 #include "MSP430.h" 18 #include "llvm/Target/TargetFrameLowering.h" 19 20 namespace llvm { 21 class MSP430FrameLowering : public TargetFrameLowering { 22 protected: 23 24 public: 25 explicit MSP430FrameLowering() 26 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2, 2) {} 27 28 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into 29 /// the function. 30 void emitPrologue(MachineFunction &MF) const override; 31 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; 32 33 void eliminateCallFramePseudoInstr(MachineFunction &MF, 34 MachineBasicBlock &MBB, 35 MachineBasicBlock::iterator I) const override; 36 37 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 38 MachineBasicBlock::iterator MI, 39 const std::vector<CalleeSavedInfo> &CSI, 40 const TargetRegisterInfo *TRI) const override; 41 bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 42 MachineBasicBlock::iterator MI, 43 const std::vector<CalleeSavedInfo> &CSI, 44 const TargetRegisterInfo *TRI) const override; 45 46 bool hasFP(const MachineFunction &MF) const override; 47 bool hasReservedCallFrame(const MachineFunction &MF) const override; 48 void processFunctionBeforeFrameFinalized(MachineFunction &MF, 49 RegScavenger *RS = nullptr) const override; 50 }; 51 52 } // End llvm namespace 53 54 #endif 55
