Share Maps for ElementsKind transitions

src/factory.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 437 matching lines @@
   copy->set_visitor_id(StaticVisitorBase::GetVisitorId(*copy));
   return copy;
 }
 
 
 Handle<Map> Factory::CopyMapDropTransitions(Handle<Map> src) {
   CALL_HEAP_FUNCTION(isolate(), src->CopyDropTransitions(), Map);
 }
 
 
-Handle<Map> Factory::GetFastElementsMap(Handle<Map> src) {
-  CALL_HEAP_FUNCTION(isolate(), src->GetFastElementsMap(), Map);
-}
-
-
-Handle<Map> Factory::GetSlowElementsMap(Handle<Map> src) {
-  CALL_HEAP_FUNCTION(isolate(), src->GetSlowElementsMap(), Map);
-}
-
-
 Handle<Map> Factory::GetElementsTransitionMap(
-    Handle<Map> src,
-    ElementsKind elements_kind,
-    bool safe_to_add_transition) {
+    Handle<JSObject> src,
+    ElementsKind elements_kind) {
   CALL_HEAP_FUNCTION(isolate(),
-                     src->GetElementsTransitionMap(elements_kind,
-                                                   safe_to_add_transition),
+                     src->GetElementsTransitionMap(elements_kind),
                      Map);
 }
 
 
 Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) {
   CALL_HEAP_FUNCTION(isolate(), array->Copy(), FixedArray);
 }
 
 
 Handle<JSFunction> Factory::BaseNewFunctionFromSharedFunctionInfo(
@@ skipping 808 matching lines @@
     Execution::ConfigureInstance(instance,
                                  instance_template,
                                  pending_exception);
   } else {
     *pending_exception = false;
   }
 }
 
 
 } }  // namespace v8::internal