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llvm-mirror/include/llvm/MC/MCLabel.h
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

57 lines
1.6 KiB
C++

//===- 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