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diff --git a/clang/utils/TableGen/OptParserEmitter.h b/clang/utils/TableGen/OptParserEmitter.h
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+++ b/clang/utils/TableGen/OptParserEmitter.h
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+//===- OptParserEmitter.h - Table Driven Command Line Parsing ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef UTILS_TABLEGEN_OPTPARSEREMITTER_H
+#define UTILS_TABLEGEN_OPTPARSEREMITTER_H
+
+#include "llvm/TableGen/TableGenBackend.h"
+
+namespace llvm {
+  /// OptParserEmitter - This tablegen backend takes an input .td file
+  /// describing a list of options and emits a data structure for parsing and
+  /// working with those options when given an input command line.
+  class OptParserEmitter : public TableGenBackend {
+    RecordKeeper &Records;
+    bool GenDefs;
+
+  public:
+    OptParserEmitter(RecordKeeper &R, bool _GenDefs)
+      : Records(R), GenDefs(_GenDefs) {}
+
+    /// run - Output the option parsing information.
+    ///
+    /// \param GenHeader - Generate the header describing the option IDs.x
+    void run(raw_ostream &OS);
+  };
+}
+
+#endif