Narrow cases where Sparse/Smart versions of Array methods are used

src/objects.h

 // 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 3527 matching lines @@
     return DerivedHashTable::Shrink(dictionary, key);
   }
 
   // Returns the number of elements in the dictionary filtering out properties
   // with the specified attributes.
   int NumberOfElementsFilterAttributes(PropertyAttributes filter);
 
   // Returns the number of enumerable elements in the dictionary.
   int NumberOfEnumElements();
 
+  // Returns true if the dictionary contains any elements that are non-writable,
+  // non-configurable, or have getters/setters.
+  bool HasComplexElements();
+
   enum SortMode { UNSORTED, SORTED };
   // Copies keys to preallocated fixed array.
   void CopyKeysTo(FixedArray* storage,
                   PropertyAttributes filter,
                   SortMode sort_mode);
   // Fill in details for properties into storage.
   void CopyKeysTo(FixedArray* storage,
                   int index,
                   PropertyAttributes filter,
                   SortMode sort_mode);
@@ skipping 7352 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_