Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- MCLabel.h - Machine Code Directional Local Labels --------*- C++ -*-===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

//

// This file contains the declaration of the MCLabel class.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_MC_MCLABEL_H

#define LLVM_MC_MCLABEL_H

namespace llvm {

class raw_ostream;

/// Instances of this class represent a label name in the MC file,

/// and MCLabel are created and uniqued by the MCContext class.  MCLabel

/// should only be constructed for valid instances in the object file.

class MCLabel {

  // The instance number of this Directional Local Label.

  unsigned Instance;

private: // MCContext creates and uniques these.

  friend class MCContext;

  MCLabel(unsigned instance) : Instance(instance) {}

public:

  MCLabel(const MCLabel &) = delete;

  MCLabel &operator=(const MCLabel &) = delete;

  /// Get the current instance of this Directional Local Label.

  unsigned getInstance() const { return Instance; }

  /// Increment the current instance of this Directional Local Label.

  unsigned incInstance() { return ++Instance; }

  /// Print the value to the stream \p OS.

  void print(raw_ostream &OS) const;

  /// Print the value to stderr.

  void dump() const;

};

inline raw_ostream &operator<<(raw_ostream &OS, const MCLabel &Label) {

  Label.print(OS);

  return OS;

}

} // end namespace llvm

#endif // LLVM_MC_MCLABEL_H