Add support for dictionary elements to polymorphic crankshaft code.

src/objects.h

 // 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 3928 matching lines @@
   inline bool has_fast_double_elements() {
     return elements_kind() == JSObject::FAST_DOUBLE_ELEMENTS;
   }
 
   inline bool has_external_array_elements() {
     JSObject::ElementsKind kind(elements_kind());
     return kind >= JSObject::FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND &&
         kind <= JSObject::LAST_EXTERNAL_ARRAY_ELEMENTS_KIND;
   }
 
+  inline bool has_dictionary_elements() {
+    return elements_kind() == JSObject::DICTIONARY_ELEMENTS;
+  }
+
   // Tells whether the map is attached to SharedFunctionInfo
   // (for inobject slack tracking).
   inline void set_attached_to_shared_function_info(bool value);
 
   inline bool attached_to_shared_function_info();
 
   // Tells whether the map is shared between objects that may have different
   // behavior. If true, the map should never be modified, instead a clone
   // should be created and modified.
   inline void set_is_shared(bool value);
@@ skipping 3173 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_