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diff --git a/contrib/llvm/utils/TableGen/DAGISelEmitter.h b/contrib/llvm/utils/TableGen/DAGISelEmitter.h
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+++ b/contrib/llvm/utils/TableGen/DAGISelEmitter.h
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+//===- DAGISelEmitter.h - Generate an instruction selector ------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tablegen backend emits a DAG instruction selector.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef DAGISEL_EMITTER_H
+#define DAGISEL_EMITTER_H
+
+#include "TableGenBackend.h"
+#include "CodeGenDAGPatterns.h"
+#include <set>
+
+namespace llvm {
+
+/// DAGISelEmitter - The top-level class which coordinates construction
+/// and emission of the instruction selector.
+///
+class DAGISelEmitter : public TableGenBackend {
+  RecordKeeper &Records;
+  CodeGenDAGPatterns CGP;
+public:
+  explicit DAGISelEmitter(RecordKeeper &R) : Records(R), CGP(R) {}
+
+  // run - Output the isel, returning true on failure.
+  void run(raw_ostream &OS);
+private:
+  void EmitPredicateFunctions(raw_ostream &OS);
+};
+
+} // End llvm namespace
+
+#endif