Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/CodeGen/MIRParser/MIRParser.h b/linux-x64/clang/include/llvm/CodeGen/MIRParser/MIRParser.h
index b631a8c..e199a1f 100644
--- a/linux-x64/clang/include/llvm/CodeGen/MIRParser/MIRParser.h
+++ b/linux-x64/clang/include/llvm/CodeGen/MIRParser/MIRParser.h
@@ -45,7 +45,7 @@
   /// \returns nullptr if a parsing error occurred.
   std::unique_ptr<Module> parseIRModule();
 
-  /// \brief Parses MachineFunctions in the MIR file and add them to the given
+  /// Parses MachineFunctions in the MIR file and add them to the given
   /// MachineModuleInfo \p MMI.
   ///
   /// \returns true if an error occurred.