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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | //===- 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
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