Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/CodeGen/ParallelCG.h b/linux-x64/clang/include/llvm/CodeGen/ParallelCG.h
index 14ef0ec..dbf09ea 100644
--- a/linux-x64/clang/include/llvm/CodeGen/ParallelCG.h
+++ b/linux-x64/clang/include/llvm/CodeGen/ParallelCG.h
@@ -40,7 +40,7 @@
 splitCodeGen(std::unique_ptr<Module> M, ArrayRef<raw_pwrite_stream *> OSs,
              ArrayRef<llvm::raw_pwrite_stream *> BCOSs,
              const std::function<std::unique_ptr<TargetMachine>()> &TMFactory,
-             TargetMachine::CodeGenFileType FT = TargetMachine::CGFT_ObjectFile,
+             TargetMachine::CodeGenFileType FileType = TargetMachine::CGFT_ObjectFile,
              bool PreserveLocals = false);
 
 } // namespace llvm