1//===-- RecordStreamer.h - Record asm defined and used symbols ---*- 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#ifndef LLVM_OBJECT_RECORD_STREAMER 11#define LLVM_OBJECT_RECORD_STREAMER 12 13#include "llvm/MC/MCStreamer.h" 14 15namespace llvm { 16class RecordStreamer : public MCStreamer { 17public: 18 enum State { NeverSeen, Global, Defined, DefinedGlobal, Used }; 19 20private: 21 StringMap<State> Symbols; 22 void markDefined(const MCSymbol &Symbol); 23 void markGlobal(const MCSymbol &Symbol); 24 void markUsed(const MCSymbol &Symbol); 25 void visitUsedSymbol(const MCSymbol &Sym) override; 26 27public: 28 typedef StringMap<State>::const_iterator const_iterator; 29 const_iterator begin(); 30 const_iterator end(); 31 RecordStreamer(MCContext &Context); 32 void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override; 33 void EmitLabel(MCSymbol *Symbol) override; 34 void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override; 35 bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override; 36 void EmitZerofill(const MCSection *Section, MCSymbol *Symbol, uint64_t Size, 37 unsigned ByteAlignment) override; 38 void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, 39 unsigned ByteAlignment) override; 40}; 41} 42#endif 43