Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Support/Compiler.h b/linux-x64/clang/include/llvm/Support/Compiler.h
new file mode 100644
index 0000000..43a96e4
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Support/Compiler.h
@@ -0,0 +1,19 @@
+//===-- llvm/Support/Compiler.h - Compiler abstraction support --*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Due to layering constraints (Support depends on Demangler) this is a thin
+// wrapper around the implementation that lives in llvm-c, though most clients
+// can/should think of this as being provided by Support for simplicity (not
+// many clients are aware of their dependency on Demangler/it's a weird place to
+// own this - but didn't seem to justify splitting Support into "lower support"
+// and "upper support").
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Demangle/Compiler.h"