1 files changed, 42 insertions, 0 deletions
diff --git a/lib/Object/RecordStreamer.h b/lib/Object/RecordStreamer.h
new file mode 100644
index 0000000..10e70ef
--- /dev/null
+++ b/lib/Object/RecordStreamer.h
@@ -0,0 +1,42 @@
+//===-- RecordStreamer.h - Record asm defined and used symbols ---*- C++ -*===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_OBJECT_RECORD_STREAMER
+#define LLVM_OBJECT_RECORD_STREAMER
+
+#include "llvm/MC/MCStreamer.h"
+
+namespace llvm {
+class RecordStreamer : public MCStreamer {
+public:
+  enum State { NeverSeen, Global, Defined, DefinedGlobal, Used };
+
+private:
+  StringMap<State> Symbols;
+  void markDefined(const MCSymbol &Symbol);
+  void markGlobal(const MCSymbol &Symbol);
+  void markUsed(const MCSymbol &Symbol);
+  void visitUsedSymbol(const MCSymbol &Sym) override;
+
+public:
+  typedef StringMap<State>::const_iterator const_iterator;
+  const_iterator begin();
+  const_iterator end();
+  RecordStreamer(MCContext &Context);
+  void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
+  void EmitLabel(MCSymbol *Symbol) override;
+  void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override;
+  bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
+  void EmitZerofill(const MCSection *Section, MCSymbol *Symbol, uint64_t Size,
+                    unsigned ByteAlignment) override;
+  void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+                        unsigned ByteAlignment) override;
+};
+}
+#endif