Pretenure prototype transitions array.

src/transitions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/transitions.h"
 
 #include "src/objects-inl.h"
 #include "src/transitions-inl.h"
 #include "src/utils.h"
 
@@ skipping 251 matching lines @@
 
 
 // static
 Handle<FixedArray> TransitionArray::GrowPrototypeTransitionArray(
     Handle<FixedArray> array, int new_capacity, Isolate* isolate) {
   // Grow array by factor 2 up to MaxCachedPrototypeTransitions.
   int capacity = array->length() - kProtoTransitionHeaderSize;
   new_capacity = Min(kMaxCachedPrototypeTransitions, new_capacity);
   DCHECK_GT(new_capacity, capacity);
   int grow_by = new_capacity - capacity;
-  array = isolate->factory()->CopyFixedArrayAndGrow(array, grow_by);
+  array = isolate->factory()->CopyFixedArrayAndGrow(array, grow_by, TENURED);
   if (capacity < 0) {
     // There was no prototype transitions array before, so the size
     // couldn't be copied. Initialize it explicitly.
     SetNumberOfPrototypeTransitions(*array, 0);
   }
   return array;
 }
 
 
 // static
@@ skipping 262 matching lines @@
                             PropertyAttributes attributes,
                             int* out_insertion_index) {
   int transition = SearchName(name, out_insertion_index);
   if (transition == kNotFound) {
     return kNotFound;
   }
   return SearchDetails(transition, kind, attributes, out_insertion_index);
 }
 }  // namespace internal
 }  // namespace v8