Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Utils.h b/linux-x64/clang/include/llvm-c/Transforms/Utils.h
new file mode 100644
index 0000000..f171f7f
--- /dev/null
+++ b/linux-x64/clang/include/llvm-c/Transforms/Utils.h
@@ -0,0 +1,50 @@
+/*===-- Utils.h - Transformation Utils Library C Interface ------*- C++ -*-===*\
+|* *|
+|* The LLVM Compiler Infrastructure *|
+|* *|
+|* This file is distributed under the University of Illinois Open Source *|
+|* License. See LICENSE.TXT for details. *|
+|* *|
+|*===----------------------------------------------------------------------===*|
+|* *|
+|* This header declares the C interface to libLLVMTransformUtils.a, which *|
+|* implements various transformation utilities of the LLVM IR. *|
+|* *|
+|* Many exotic languages can interoperate with C code but have a harder time *|
+|* with C++ due to name mangling. So in addition to C, this interface enables *|
+|* tools written in such languages. *|
+|* *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_TRANSFORMS_UTILS_H
+#define LLVM_C_TRANSFORMS_UTILS_H
+
+#include "llvm-c/Types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup LLVMCTransformsUtils Transformation Utilities
+ * @ingroup LLVMCTransforms
+ *
+ * @{
+ */
+
+/** See llvm::createLowerSwitchPass function. */
+void LLVMAddLowerSwitchPass(LLVMPassManagerRef PM);
+
+/** See llvm::createPromoteMemoryToRegisterPass function. */
+void LLVMAddPromoteMemoryToRegisterPass(LLVMPassManagerRef PM);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif /* defined(__cplusplus) */
+
+#endif
+