Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/TableGen/TableGenBackend.h b/linux-x64/clang/include/llvm/TableGen/TableGenBackend.h
new file mode 100644
index 0000000..d226f1f
--- /dev/null
+++ b/linux-x64/clang/include/llvm/TableGen/TableGenBackend.h
@@ -0,0 +1,28 @@
+//===- llvm/TableGen/TableGenBackend.h - Backend utilities ------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Useful utilities for TableGen backends.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TABLEGEN_TABLEGENBACKEND_H
+#define LLVM_TABLEGEN_TABLEGENBACKEND_H
+
+namespace llvm {
+
+class StringRef;
+class raw_ostream;
+
+/// emitSourceFileHeader - Output an LLVM style file header to the specified
+/// raw_ostream.
+void emitSourceFileHeader(StringRef Desc, raw_ostream &OS);
+
+} // End llvm namespace
+
+#endif