1 //=- BlackfinFrameLowering.h - Define frame lowering for Blackfin -*- 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 BLACKFIN_FRAMEINFO_H 15 #define BLACKFIN_FRAMEINFO_H 16 17 #include "Blackfin.h" 18 #include "BlackfinSubtarget.h" 19 #include "llvm/Target/TargetFrameLowering.h" 20 21 namespace llvm { 22 class BlackfinSubtarget; 23 24 class BlackfinFrameLowering : public TargetFrameLowering { 25 protected: 26 const BlackfinSubtarget &STI; 27 28 public: 29 explicit BlackfinFrameLowering(const BlackfinSubtarget &sti) 30 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 4, 0), 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 bool hasFP(const MachineFunction &MF) const; 39 bool hasReservedCallFrame(const MachineFunction &MF) const; 40 41 void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, 42 RegScavenger *RS) const; 43 }; 44 45 } // End llvm namespace 46 47 #endif 48
