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 21 namespace llvm { 22 class MSP430Subtarget; 23 24 class MSP430FrameLowering : public TargetFrameLowering { 25 protected: 26 const MSP430Subtarget &STI; 27 28 public: 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
