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 #include "SystemZGenRegisterInfo.h.inc"
  19
  20 namespace llvm {
  21
  22 class SystemZSubtarget;
  23 class SystemZInstrInfo;
  24 class Type;
  25
  26 struct SystemZRegisterInfo : public SystemZGenRegisterInfo {
  27   SystemZTargetMachine &TM;
  28   const SystemZInstrInfo &TII;
  29
  30   SystemZRegisterInfo(SystemZTargetMachine &tm, const SystemZInstrInfo &tii);
  31
  32   /// Code Generation virtual methods...
  33   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  34
  35   BitVector getReservedRegs(const MachineFunction &MF) const;
  36
  37   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  38                                      MachineBasicBlock &MBB,
  39                                      MachineBasicBlock::iterator I) const;
  40
  41   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  42                            int SPAdj, RegScavenger *RS = NULL) const;
  43
  44   // Debug information queries.
  45   unsigned getRARegister() const;
  46   unsigned getFrameRegister(const MachineFunction &MF) const;
  47
  48   // Exception handling queries.
  49   unsigned getEHExceptionRegister() const;
  50   unsigned getEHHandlerRegister() const;
  51
  52   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
  53 };
  54
  55 } // end namespace llvm
  56
  57 #endif