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 "MSP430Subtarget.h" 19#include "llvm/Target/TargetFrameLowering.h" 20 21namespace llvm { 22 class MSP430Subtarget; 23 24class MSP430FrameLowering : public TargetFrameLowering { 25protected: 26 const MSP430Subtarget &STI; 27 28public: 29 explicit MSP430FrameLowering(const MSP430Subtarget &sti) 30 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2), STI(sti) { 31 } 32 33 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into 34 /// the function. 35 void emitPrologue(MachineFunction &MF) const; 36 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; 37 38 void eliminateCallFramePseudoInstr(MachineFunction &MF, 39 MachineBasicBlock &MBB, 40 MachineBasicBlock::iterator I) const; 41 42 bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 43 MachineBasicBlock::iterator MI, 44 const std::vector<CalleeSavedInfo> &CSI, 45 const TargetRegisterInfo *TRI) const; 46 bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 47 MachineBasicBlock::iterator MI, 48 const std::vector<CalleeSavedInfo> &CSI, 49 const TargetRegisterInfo *TRI) const; 50 51 bool hasFP(const MachineFunction &MF) const; 52 bool hasReservedCallFrame(const MachineFunction &MF) const; 53 void processFunctionBeforeFrameFinalized(MachineFunction &MF, 54 RegScavenger *RS = NULL) const; 55}; 56 57} // End llvm namespace 58 59#endif 60