| //===- MCLabel.h - Machine Code Directional Local Labels --------*- 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 declaration of the MCLabel class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_MC_MCLABEL_H |
| #define LLVM_MC_MCLABEL_H |
| |
| namespace llvm { |
| |
| class raw_ostream; |
| |
| /// \brief 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 { |
| // \brief 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; |
| |
| /// \brief Get the current instance of this Directional Local Label. |
| unsigned getInstance() const { return Instance; } |
| |
| /// \brief Increment the current instance of this Directional Local Label. |
| unsigned incInstance() { return ++Instance; } |
| |
| /// \brief Print the value to the stream \p OS. |
| void print(raw_ostream &OS) const; |
| |
| /// \brief 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 |