diff --git a/lib/Transforms/Scalar/Reassociate.cpp b/lib/Transforms/Scalar/Reassociate.cpp
index 578e8e035c0..1080b75ed09 100644
--- a/lib/Transforms/Scalar/Reassociate.cpp
+++ b/lib/Transforms/Scalar/Reassociate.cpp
@@ -1130,6 +1130,7 @@ bool Reassociate::runOnFunction(Function &F) {
   // We are done with the rank map.
   RankMap.clear();
   ValueRankMap.clear();
+  DbgValues.clear();
   return MadeChange;
 }