lib/Target/SystemZ/SystemZRegisterInfo.h

   1 //===-- SystemZRegisterInfo.h - SystemZ Register Information ----*- 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 SystemZ implementation of the TargetRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef SystemZREGISTERINFO_H
  15 #define SystemZREGISTERINFO_H
  16
  17 #include "llvm/Target/TargetRegisterInfo.h"
  18
  19 #define GET_REGINFO_HEADER
  20 #include "SystemZGenRegisterInfo.inc"
  21
  22 namespace llvm {
  23
  24 class SystemZSubtarget;
  25 class SystemZInstrInfo;
  26 class Type;
  27
  28 struct SystemZRegisterInfo : public SystemZGenRegisterInfo {
  29   SystemZTargetMachine &TM;
  30   const SystemZInstrInfo &TII;
  31
  32   SystemZRegisterInfo(SystemZTargetMachine &tm, const SystemZInstrInfo &tii);
  33
  34   /// Code Generation virtual methods...
  35   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  36
  37   BitVector getReservedRegs(const MachineFunction &MF) const;
  38
  39   const TargetRegisterClass*
  40   getMatchingSuperRegClass(const TargetRegisterClass *A,
  41                            const TargetRegisterClass *B, unsigned Idx) const;
  42
  43   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  44                                      MachineBasicBlock &MBB,
  45                                      MachineBasicBlock::iterator I) const;
  46
  47   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  48                            int SPAdj, RegScavenger *RS = NULL) const;
  49
  50   // Debug information queries.
  51   unsigned getRARegister() const;
  52   unsigned getFrameRegister(const MachineFunction &MF) const;
  53
  54   // Exception handling queries.
  55   unsigned getEHExceptionRegister() const;
  56   unsigned getEHHandlerRegister() const;
  57
  58   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
  59   int getLLVMRegNum(unsigned RegNum, bool isEH) const;
  60 };
  61
  62 } // end namespace llvm
  63
  64 #endif