1 //=- HexagonFrameLowering.h - Define frame lowering for Hexagon --*- 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 HEXAGON_FRAMEINFO_H 11 #define HEXAGON_FRAMEINFO_H 12 13 #include "Hexagon.h" 14 #include "HexagonSubtarget.h" 15 #include "llvm/Target/TargetFrameLowering.h" 16 17 namespace llvm { 18 19 class HexagonFrameLowering : public TargetFrameLowering { 20 private: 21 const HexagonSubtarget &STI; 22 void determineFrameLayout(MachineFunction &MF) const; 23 24 public: 25 explicit HexagonFrameLowering(const HexagonSubtarget &sti) 26 : TargetFrameLowering(StackGrowsDown, 8, 0), STI(sti) { 27 } 28 29 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into 30 /// the function. 31 void emitPrologue(MachineFunction &MF) const; 32 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; 33 virtual bool 34 spillCalleeSavedRegisters(MachineBasicBlock &MBB, 35 MachineBasicBlock::iterator MI, 36 const std::vector<CalleeSavedInfo> &CSI, 37 const TargetRegisterInfo *TRI) const; 38 39 void eliminateCallFramePseudoInstr(MachineFunction &MF, 40 MachineBasicBlock &MBB, 41 MachineBasicBlock::iterator I) const; 42 43 virtual bool 44 restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 45 MachineBasicBlock::iterator MI, 46 const std::vector<CalleeSavedInfo> &CSI, 47 const TargetRegisterInfo *TRI) const; 48 int getFrameIndexOffset(const MachineFunction &MF, int FI) const; 49 bool hasFP(const MachineFunction &MF) const; 50 bool hasTailCall(MachineBasicBlock &MBB) const; 51 }; 52 53 } // End llvm namespace 54 55 #endif 56
