lib/Target/ZPU/ZPURegisterInfo.h

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