lib/Target/Sparc/SparcRegisterInfo.h

   1 //===- SparcRegisterInfo.h - Sparc Register Information Impl ----*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by the LLVM research group and is distributed under
   6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the Sparc implementation of the MRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef SPARCREGISTERINFO_H
  15 #define SPARCREGISTERINFO_H
  16
  17 #include "llvm/Target/MRegisterInfo.h"
  18 #include "SparcGenRegisterInfo.h.inc"
  19
  20 namespace llvm {
  21
  22 class SparcSubtarget;
  23 class TargetInstrInfo;
  24 class Type;
  25
  26 struct SparcRegisterInfo : public SparcGenRegisterInfo {
  27   SparcSubtarget &Subtarget;
  28   const TargetInstrInfo &TII;
  29
  30   SparcRegisterInfo(SparcSubtarget &st, const TargetInstrInfo &tii);
  31
  32   /// Code Generation virtual methods...
  33   void storeRegToStackSlot(MachineBasicBlock &MBB,
  34                            MachineBasicBlock::iterator MBBI,
  35                            unsigned SrcReg, int FrameIndex,
  36                            const TargetRegisterClass *RC) const;
  37
  38   void loadRegFromStackSlot(MachineBasicBlock &MBB,
  39                             MachineBasicBlock::iterator MBBI,
  40                             unsigned DestReg, int FrameIndex,
  41                             const TargetRegisterClass *RC) const;
  42
  43   void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
  44                     unsigned DestReg, unsigned SrcReg,
  45                     const TargetRegisterClass *DestRC,
  46                     const TargetRegisterClass *SrcRC) const;
  47
  48   void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
  49                      unsigned DestReg, const MachineInstr *Orig) const;
  50
  51   virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
  52                                           unsigned OpNum,
  53                                           int FrameIndex) const;
  54
  55   virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
  56                                           unsigned OpNum,
  57                                           MachineInstr* LoadMI) const {
  58     return 0;
  59   }
  60
  61   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  62
  63   const TargetRegisterClass* const* getCalleeSavedRegClasses(
  64                                      const MachineFunction *MF = 0) const;
  65
  66   BitVector getReservedRegs(const MachineFunction &MF) const;
  67
  68   bool hasFP(const MachineFunction &MF) const;
  69
  70   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  71                                      MachineBasicBlock &MBB,
  72                                      MachineBasicBlock::iterator I) const;
  73
  74   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  75                            int SPAdj, RegScavenger *RS = NULL) const;
  76
  77   void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  78
  79   void emitPrologue(MachineFunction &MF) const;
  80   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  81
  82   // Debug information queries.
  83   unsigned getRARegister() const;
  84   unsigned getFrameRegister(MachineFunction &MF) const;
  85
  86   // Exception handling queries.
  87   unsigned getEHExceptionRegister() const;
  88   unsigned getEHHandlerRegister() const;
  89 };
  90
  91 } // end namespace llvm
  92
  93 #endif