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 #include "MipsGenRegisterInfo.h.inc"
  20
  21 namespace llvm {
  22 class MipsSubtarget;
  23 class TargetInstrInfo;
  24 class Type;
  25
  26 struct MipsRegisterInfo : public MipsGenRegisterInfo {
  27   const MipsSubtarget &Subtarget;
  28   const TargetInstrInfo &TII;
  29
  30   MipsRegisterInfo(const MipsSubtarget &Subtarget, const TargetInstrInfo &tii);
  31
  32   /// getRegisterNumbering - Given the enum value for some register, e.g.
  33   /// Mips::RA, return the number that it corresponds to (e.g. 31).
  34   static unsigned getRegisterNumbering(unsigned RegEnum);
  35
  36   /// Get PIC indirect call register
  37   static unsigned getPICCallReg(void);
  38
  39   /// Adjust the Mips stack frame.
  40   void adjustMipsStackFrame(MachineFunction &MF) const;
  41
  42   /// Code Generation virtual methods...
  43   const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
  44
  45   const TargetRegisterClass* const*
  46   getCalleeSavedRegClasses(const MachineFunction* MF = 0) const;
  47
  48   BitVector getReservedRegs(const MachineFunction &MF) const;
  49
  50   bool hasFP(const MachineFunction &MF) const;
  51
  52   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  53                                      MachineBasicBlock &MBB,
  54                                      MachineBasicBlock::iterator I) const;
  55
  56   /// Stack Frame Processing Methods
  57   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  58                            int SPAdj, RegScavenger *RS = NULL) const;
  59
  60   void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
  61
  62   void emitPrologue(MachineFunction &MF) const;
  63   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
  64
  65   /// Debug information queries.
  66   unsigned getRARegister() const;
  67   unsigned getFrameRegister(MachineFunction &MF) const;
  68
  69   /// Exception handling queries.
  70   unsigned getEHExceptionRegister() const;
  71   unsigned getEHHandlerRegister() const;
  72
  73   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
  74 };
  75
  76 } // end namespace llvm
  77
  78 #endif