1 //===-- SparcFrameLowering.h - Define frame lowering for Sparc --*- 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 SPARC_FRAMEINFO_H 15 #define SPARC_FRAMEINFO_H 16 17 #include "Sparc.h" 18 #include "SparcSubtarget.h" 19 #include "llvm/Target/TargetFrameLowering.h" 20 21 namespace llvm { 22 class SparcSubtarget; 23 24 class SparcFrameLowering : public TargetFrameLowering { 25 const SparcSubtarget &SubTarget; 26 public: 27 explicit SparcFrameLowering(const SparcSubtarget &ST) 28 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 29 ST.is64Bit() ? 16 : 8, 0, ST.is64Bit() ? 16 : 8), 30 SubTarget(ST) {} 31 32 /// emitProlog/emitEpilog - These methods insert prolog and epilog code into 33 /// the function. 34 void emitPrologue(MachineFunction &MF) const; 35 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; 36 37 void eliminateCallFramePseudoInstr(MachineFunction &MF, 38 MachineBasicBlock &MBB, 39 MachineBasicBlock::iterator I) const; 40 41 bool hasReservedCallFrame(const MachineFunction &MF) const; 42 bool hasFP(const MachineFunction &MF) const; 43 void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, 44 RegScavenger *RS = NULL) const; 45 46 private: 47 // Remap input registers to output registers for leaf procedure. 48 void remapRegsForLeafProc(MachineFunction &MF) const; 49 50 // Returns true if MF is a leaf procedure. 51 bool isLeafProc(MachineFunction &MF) const; 52 }; 53 54 } // End llvm namespace 55 56 #endif 57
