Update clang to r339409b.

Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Scalar.h b/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
index f55cdce..3c3bb4e 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
@@ -35,9 +35,6 @@
 /** See llvm::createAggressiveDCEPass function. */
 void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM);
 
-/** See llvm::createAggressiveInstCombinerPass function. */
-void LLVMAddAggressiveInstCombinerPass(LLVMPassManagerRef PM);
-
 /** See llvm::createBitTrackingDCEPass function. */
 void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM);
 
@@ -95,6 +92,9 @@
 /** See llvm::createLoopUnswitchPass function. */
 void LLVMAddLoopUnswitchPass(LLVMPassManagerRef PM);
 
+/** See llvm::createLowerAtomicPass function. */
+void LLVMAddLowerAtomicPass(LLVMPassManagerRef PM);
+
 /** See llvm::createMemCpyOptPass function. */
 void LLVMAddMemCpyOptPass(LLVMPassManagerRef PM);
 
@@ -153,6 +153,9 @@
 /** See llvm::createBasicAliasAnalysisPass function */
 void LLVMAddBasicAliasAnalysisPass(LLVMPassManagerRef PM);
 
+/** See llvm::createUnifyFunctionExitNodesPass function */
+void LLVMAddUnifyFunctionExitNodesPass(LLVMPassManagerRef PM);
+
 /**
  * @}
  */