lib/Target/X86/X86RegisterInfo.h

   1 //===- X86RegisterInfo.h - X86 Register Information Impl ----------*-C++-*-===//
   2 //
   3 // This file contains the X86 implementation of the MRegisterInfo class.
   4 //
   5 //===----------------------------------------------------------------------===//
   6
   7 #ifndef X86REGISTERINFO_H
   8 #define X86REGISTERINFO_H
   9
  10 #include "llvm/Target/MRegisterInfo.h"
  11
  12 class Type;
  13
  14 struct X86RegisterInfo : public MRegisterInfo {
  15   X86RegisterInfo();
  16
  17   MRegisterInfo::const_iterator const_regclass_begin() const;
  18   MRegisterInfo::const_iterator const_regclass_end() const;
  19
  20   MachineBasicBlock::iterator
  21   storeReg2RegOffset(MachineBasicBlock *MBB,
  22                      MachineBasicBlock::iterator MBBI,
  23                      unsigned DestReg, unsigned SrcReg,
  24                      unsigned ImmOffset, unsigned dataSize) const;
  25
  26   MachineBasicBlock::iterator
  27   loadRegOffset2Reg(MachineBasicBlock *MBB,
  28                     MachineBasicBlock::iterator MBBI,
  29                     unsigned DestReg, unsigned SrcReg,
  30                     unsigned ImmOffset, unsigned dataSize) const;
  31
  32   unsigned getFramePointer() const;
  33   unsigned getStackPointer() const;
  34
  35   const unsigned* getCalleeSaveRegs() const;
  36   const unsigned* getCallerSaveRegs() const;
  37
  38   MachineBasicBlock::iterator emitPrologue(MachineBasicBlock *MBB,
  39                                            MachineBasicBlock::iterator MBBI,
  40                                            unsigned numBytes) const;
  41
  42   MachineBasicBlock::iterator emitEpilogue(MachineBasicBlock *MBB,
  43                                            MachineBasicBlock::iterator MBBI,
  44                                            unsigned numBytes) const;
  45
  46   /// Returns register class appropriate for input SSA register
  47   ///
  48   const TargetRegisterClass *getClassForReg(unsigned Reg) const;
  49
  50   const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
  51
  52   unsigned getNumRegClasses() const;
  53
  54 };
  55
  56 #endif