contrib/llvm/lib/Target/Mips/Mips16RegisterInfo.h

   1 //===-- Mips16RegisterInfo.h - Mips16 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 Mips16 implementation of the TargetRegisterInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef MIPS16REGISTERINFO_H
  15 #define MIPS16REGISTERINFO_H
  16
  17 #include "MipsRegisterInfo.h"
  18
  19 namespace llvm {
  20 class Mips16InstrInfo;
  21
  22 class Mips16RegisterInfo : public MipsRegisterInfo {
  23   const Mips16InstrInfo &TII;
  24 public:
  25   Mips16RegisterInfo(const MipsSubtarget &Subtarget,
  26                      const Mips16InstrInfo &TII);
  27
  28   bool requiresRegisterScavenging(const MachineFunction &MF) const;
  29
  30   bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
  31
  32   bool useFPForScavengingIndex(const MachineFunction &MF) const;
  33
  34   bool saveScavengerRegister(MachineBasicBlock &MBB,
  35                                      MachineBasicBlock::iterator I,
  36                                      MachineBasicBlock::iterator &UseMI,
  37                                      const TargetRegisterClass *RC,
  38                                      unsigned Reg) const;
  39
  40   virtual const TargetRegisterClass *intRegClass(unsigned Size) const;
  41
  42 private:
  43   virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
  44                            int FrameIndex, uint64_t StackSize,
  45                            int64_t SPOffset) const;
  46 };
  47
  48 } // end namespace llvm
  49
  50 #endif