llvm/lib/Target/ARM/ARMInstrInfo.h

//===-- ARMInstrInfo.h - ARM Instruction Information ------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the ARM implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
#define LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H

#include "ARMBaseInstrInfo.h"
#include "ARMRegisterInfo.h"

namespace llvm {
  class ARMSubtarget;

class ARMInstrInfo : public ARMBaseInstrInfo {
  ARMRegisterInfo RI;
public:
  explicit ARMInstrInfo(const ARMSubtarget &STI);

  /// Return the noop instruction to use for a noop.
  void getNoop(MCInst &NopInst) const override;

  // Return the non-pre/post incrementing version of 'Opc'. Return 0
  // if there is not such an opcode.
  unsigned getUnindexedOpcode(unsigned Opc) const override;

  /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
  /// such, whenever a client has an instance of instruction info, it should
  /// always be able to get register info as well (through this method).
  ///
  const ARMRegisterInfo &getRegisterInfo() const override { return RI; }

  std::pair<unsigned, unsigned>
  decomposeMachineOperandsTargetFlags(unsigned TF) const override;
  ArrayRef<std::pair<unsigned, const char *>>
  getSerializableDirectMachineOperandTargetFlags() const override;
  ArrayRef<std::pair<unsigned, const char *>>
  getSerializableBitmaskMachineOperandTargetFlags() const override;

private:
  void expandLoadStackGuard(MachineBasicBlock::iterator MI) const override;
};

}

#endif