ElementsKind transitioning support for keyed loads in Crankshaft

Review URL: http://codereview.chromium.org/8352012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen.cc

@@ -4096,7 +4096,6 @@ HValue* HGraphBuilder::HandlePolymorphicElementAccess(HValue* object,
 
   // Elements_kind transition support.
   MapList transition_target(maps->length());
-  if (is_store) {
   // Collect possible transition targets.
   MapList possible_transitioned_maps(maps->length());
   for (int i = 0; i < maps->length(); ++i) {
@@ -4114,15 +4113,13 @@ HValue* HGraphBuilder::HandlePolymorphicElementAccess(HValue* object,
         map->FindTransitionedMap(&possible_transitioned_maps);
     transition_target.Add(transitioned_map);
   }
-  }
 
   int num_untransitionable_maps = 0;
   Handle<Map> untransitionable_map;
   for (int i = 0; i < maps->length(); ++i) {
     Handle<Map> map = maps->at(i);
     ASSERT(map->IsMap());
-    ASSERT(!is_store || (transition_target.length() == maps->length()));
-    if (is_store && transition_target.at(i) != NULL) {
+    if (transition_target.at(i) != NULL) {
       object = AddInstruction(new(zone()) HTransitionElementsKind(
           object, map, Handle<Map>(transition_target.at(i))));
     } else {