use EP_OptimizerLast instead of EP_ScalarOptimizerLate for ThreadSanitizer

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153356 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index 79cdb3c..a65ae82 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -168,7 +168,7 @@
   }
 
   if (LangOpts.ThreadSanitizer) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate,
+    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
                            addThreadSanitizerPass);
     PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
                            addThreadSanitizerPass);