lib/Target/ARM/Thumb2InstrInfo.h

   1 //===- Thumb2InstrInfo.h - Thumb-2 Instruction 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 Thumb-2 implementation of the TargetInstrInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef THUMB2INSTRUCTIONINFO_H
  15 #define THUMB2INSTRUCTIONINFO_H
  16
  17 #include "llvm/Target/TargetInstrInfo.h"
  18 #include "ARM.h"
  19 #include "ARMInstrInfo.h"
  20 #include "Thumb2RegisterInfo.h"
  21
  22 namespace llvm {
  23   class ARMSubtarget;
  24
  25 class Thumb2InstrInfo : public ARMBaseInstrInfo {
  26   Thumb2RegisterInfo RI;
  27 public:
  28   explicit Thumb2InstrInfo(const ARMSubtarget &STI);
  29
  30   // Return the non-pre/post incrementing version of 'Opc'. Return 0
  31   // if there is not such an opcode.
  32   unsigned getUnindexedOpcode(unsigned Opc) const;
  33
  34   // Return true if the block does not fall through.
  35   bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const;
  36
  37   bool copyRegToReg(MachineBasicBlock &MBB,
  38                     MachineBasicBlock::iterator I,
  39                     unsigned DestReg, unsigned SrcReg,
  40                     const TargetRegisterClass *DestRC,
  41                     const TargetRegisterClass *SrcRC) const;
  42
  43   void storeRegToStackSlot(MachineBasicBlock &MBB,
  44                            MachineBasicBlock::iterator MBBI,
  45                            unsigned SrcReg, bool isKill, int FrameIndex,
  46                            const TargetRegisterClass *RC) const;
  47
  48   void loadRegFromStackSlot(MachineBasicBlock &MBB,
  49                             MachineBasicBlock::iterator MBBI,
  50                             unsigned DestReg, int FrameIndex,
  51                             const TargetRegisterClass *RC) const;
  52
  53   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
  54   /// such, whenever a client has an instance of instruction info, it should
  55   /// always be able to get register info as well (through this method).
  56   ///
  57   const Thumb2RegisterInfo &getRegisterInfo() const { return RI; }
  58 };
  59 }
  60
  61 #endif // THUMB2INSTRUCTIONINFO_H