diff --git a/lib/Transforms/Scalar/Reassociate.cpp b/lib/Transforms/Scalar/Reassociate.cpp
index 6b761c5bec7..75f646d1d43 100644
--- a/lib/Transforms/Scalar/Reassociate.cpp
+++ b/lib/Transforms/Scalar/Reassociate.cpp
@@ -2227,8 +2227,13 @@ PreservedAnalyses ReassociatePass::run(Function &F) {
   RankMap.clear();
   ValueRankMap.clear();
 
-  if (MadeChange)
-    return PreservedAnalyses::none();
+  if (MadeChange) {
+    // FIXME: Reassociate should also 'preserve the CFG'.
+    // The new pass manager has currently no way to do it.
+    auto PA = PreservedAnalyses();
+    PA.preserve<GlobalsAA>();
+    return PA;
+  }
 
   return PreservedAnalyses::all();
 }