Additional work to get array literal allocation tracking working, even with --always-opt

src/ic.cc

Index: src/ic.cc
diff --git a/src/ic.cc b/src/ic.cc
index 0db9aa56204afe81f556c53e86e90adfe5a9f083..b7e00eba89db4056c957881e01893b4a86aa4111 100644
--- a/src/ic.cc
+++ b/src/ic.cc
@@ -1858,6 +1858,11 @@ Handle<Code> KeyedStoreIC::ComputePolymorphicStub(
     Handle<Code> cached_stub;
     Handle<Map> transitioned_map =
         receiver_map->FindTransitionedMap(receiver_maps);
+
+    // TODO(mvstanton): we should set the transitioned map to always be
+    // null, and quit doing transitions on key stores. Right now though
+    // if I do this there are some serious performance issues.
+
     if (!transitioned_map.is_null()) {
       cached_stub = ElementsTransitionAndStoreStub(
           receiver_map->elements_kind(),  // original elements_kind