Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h b/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h
new file mode 100644
index 0000000..e1c1572
--- /dev/null
+++ b/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h
@@ -0,0 +1,43 @@
+/*===-- Scalar.h - Scalar Transformation 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 libLLVMInstCombine.a, which        *|
+|* combines instructions to form fewer, simple IR instructions.               *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_TRANSFORMS_INSTCOMBINE_H
+#define LLVM_C_TRANSFORMS_INSTCOMBINE_H
+
+#include "llvm-c/Types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup LLVMCTransformsInstCombine Instruction Combining transformations
+ * @ingroup LLVMCTransforms
+ *
+ * @{
+ */
+
+/** See llvm::createInstructionCombiningPass function. */
+void LLVMAddInstructionCombiningPass(LLVMPassManagerRef PM);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif /* defined(__cplusplus) */
+
+#endif
+