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