lib/Target/XCore/XCoreRegisterInfo.h

   1 //===- XCoreRegisterInfo.h - XCore 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 XCore implementation of the MRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef XCOREREGISTERINFO_H
  15 #define XCOREREGISTERINFO_H
  16
  17 #include "llvm/Target/TargetRegisterInfo.h"
  18
  19 #define GET_REGINFO_HEADER
  20 #include "XCoreGenRegisterInfo.inc"
  21
  22 namespace llvm {
  23
  24 class TargetInstrInfo;
  25
  26 struct XCoreRegisterInfo : public XCoreGenRegisterInfo {
  27 private:
  28   const TargetInstrInfo &TII;
  29
  30   void loadConstant(MachineBasicBlock &MBB,
  31                   MachineBasicBlock::iterator I,
  32                   unsigned DstReg, int64_t Value, DebugLoc dl) const;
  33
  34   void storeToStack(MachineBasicBlock &MBB,
  35                   MachineBasicBlock::iterator I,
  36                   unsigned SrcReg, int Offset, DebugLoc dl) const;
  37
  38   void loadFromStack(MachineBasicBlock &MBB,
  39                   MachineBasicBlock::iterator I,
  40                   unsigned DstReg, int Offset, DebugLoc dl) const;
  41
  42 public:
  43   XCoreRegisterInfo(const TargetInstrInfo &tii);
  44
  45   /// Code Generation virtual methods...
  46
  47   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
  48
  49   BitVector getReservedRegs(const MachineFunction &MF) const;
  50
  51   bool requiresRegisterScavenging(const MachineFunction &MF) const;
  52
  53   bool useFPForScavengingIndex(const MachineFunction &MF) const;
  54
  55   void eliminateCallFramePseudoInstr(MachineFunction &MF,
  56                                      MachineBasicBlock &MBB,
  57                                      MachineBasicBlock::iterator I) const;
  58
  59   void eliminateFrameIndex(MachineBasicBlock::iterator II,
  60                            int SPAdj, RegScavenger *RS = NULL) const;
  61
  62   // Debug information queries.
  63   unsigned getRARegister() const;
  64   unsigned getFrameRegister(const MachineFunction &MF) const;
  65
  66   //! Return the array of argument passing registers
  67   /*!
  68     \note The size of this array is returned by getArgRegsSize().
  69     */
  70   static const unsigned *getArgRegs(const MachineFunction *MF = 0);
  71
  72   //! Return the size of the argument passing register array
  73   static unsigned getNumArgRegs(const MachineFunction *MF = 0);
  74
  75   //! Return whether to emit frame moves
  76   static bool needsFrameMoves(const MachineFunction &MF);
  77
  78   //! Get DWARF debugging register number
  79   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
  80   int getLLVMRegNum(unsigned RegNum, bool isEH) const;
  81 };
  82
  83 } // end namespace llvm
  84
  85 #endif