1 //===- MCLabel.h - Machine Code Directional Local Labels --------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains the declaration of the MCLabel class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_MC_MCLABEL_H 15 #define LLVM_MC_MCLABEL_H 16 17 #include "llvm/Support/Compiler.h" 18 19 namespace llvm { 20 class MCContext; 21 class raw_ostream; 22 23 /// MCLabel - Instances of this class represent a label name in the MC file, 24 /// and MCLabel are created and unique'd by the MCContext class. MCLabel 25 /// should only be constructed for valid instances in the object file. 26 class MCLabel { 27 // Instance - the instance number of this Directional Local Label 28 unsigned Instance; 29 30 private: // MCContext creates and uniques these. 31 friend class MCContext; 32 MCLabel(unsigned instance) 33 : Instance(instance) {} 34 35 MCLabel(const MCLabel&) LLVM_DELETED_FUNCTION; 36 void operator=(const MCLabel&) LLVM_DELETED_FUNCTION; 37 public: 38 /// getInstance - Get the current instance of this Directional Local Label. 39 unsigned getInstance() const { return Instance; } 40 41 /// incInstance - Increment the current instance of this Directional Local 42 /// Label. 43 unsigned incInstance() { return ++Instance; } 44 45 /// print - Print the value to the stream \p OS. 46 void print(raw_ostream &OS) const; 47 48 /// dump - Print the value to stderr. 49 void dump() const; 50 }; 51 52 inline raw_ostream &operator<<(raw_ostream &OS, const MCLabel &Label) { 53 Label.print(OS); 54 return OS; 55 } 56 } // end namespace llvm 57 58 #endif 59
