lib/Target/Mips/MipsRegisterInfo.h

   1 //===- MipsRegisterInfo.h - Mips Register Information Impl ------*- 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 // This file contains the Mips implementation of the TargetRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef MIPSREGISTERINFO_H
  15 #define MIPSREGISTERINFO_H
  16
  17 #include "Mips.h"
  18 #include "llvm/Target/TargetRegisterInfo.h"
  19
  20 #define GET_REGINFO_HEADER
  21 #include "MipsGenRegisterInfo.inc"
  22
  23 namespace llvm {
  24 class MipsSubtarget;
  25 class TargetInstrInfo;
  26 class Type;
  27
  28 struct MipsRegisterInfo : public MipsGenRegisterInfo {
  29   const MipsSubtarget &Subtarget;
  30   const TargetInstrInfo &TII;
  31
  32   MipsRegisterInfo(const MipsSubtarget &Subtarget, const TargetInstrInfo &tii);
  33
  34   /// getRegisterNumbering - Given the enum value for some register, e.g.
  35   /// Mips::RA, return the number that it corresponds to (e.g. 31).
  36   static unsigned getRegisterNumbering(unsigned RegEnum);
  37
  38   /// Get PIC indirect call register
  39   static unsigned getPICCallReg();
  40
  41   /// Adjust the Mips stack frame.
  42   void adjustMipsStackFrame(MachineFunction &MF) const;
  43
  44   /// Code Generation virtual methods...
  45   const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
  46
  47   BitVector getReservedRegs(const MachineFunction &MF) const;
  48
  49   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  50                                      MachineBasicBlock &MBB,
  51                                      MachineBasicBlock::iterator I) const;
  52
  53   /// Stack Frame Processing Methods
  54   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  55                            int SPAdj, RegScavenger *RS = NULL) const;
  56
  57   void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  58
  59   /// Debug information queries.
  60   unsigned getRARegister() const;
  61   unsigned getFrameRegister(const MachineFunction &MF) const;
  62
  63   /// Exception handling queries.
  64   unsigned getEHExceptionRegister() const;
  65   unsigned getEHHandlerRegister() const;
  66
  67   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
  68   int getLLVMRegNum(unsigned RegNum, bool isEH) const;
  69 };
  70
  71 } // end namespace llvm
  72
  73 #endif