Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/TableGen/Main.h b/linux-x64/clang/include/llvm/TableGen/Main.h
new file mode 100644
index 0000000..670572d
--- /dev/null
+++ b/linux-x64/clang/include/llvm/TableGen/Main.h
@@ -0,0 +1,30 @@
+//===- llvm/TableGen/Main.h - tblgen entry point ----------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the common entry point for tblgen tools.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TABLEGEN_MAIN_H
+#define LLVM_TABLEGEN_MAIN_H
+
+namespace llvm {
+
+class raw_ostream;
+class RecordKeeper;
+
+/// Perform the action using Records, and write output to OS.
+/// Returns true on error, false otherwise.
+using TableGenMainFn = bool (raw_ostream &OS, RecordKeeper &Records);
+
+int TableGenMain(char *argv0, TableGenMainFn *MainFn);
+
+} // end namespace llvm
+
+#endif // LLVM_TABLEGEN_MAIN_H