Allocate room for expected number of properties based on the...

src/runtime.cc

 // Copyright 2006-2008 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 3960 matching lines @@
           JSObject::cast(result->holder())->property_dictionary();
       value = dict->ValueAt(result->GetDictionaryEntry());
       if (value->IsTheHole()) {
         return Heap::undefined_value();
       }
       return value;
     }
     case FIELD:
       value =
           JSObject::cast(
-              result->holder())->properties()->get(result->GetFieldIndex());
+              result->holder())->FastPropertyAt(result->GetFieldIndex());
       if (value->IsTheHole()) {
         return Heap::undefined_value();
       }
       return value;
     case CONSTANT_FUNCTION:
       return result->GetConstantFunction();
     case CALLBACKS:
     case INTERCEPTOR:
     case MAP_TRANSITION:
     case CONSTANT_TRANSITION:
@@ skipping 1338 matching lines @@
 
 void Runtime::PerformGC(Object* result) {
   Failure* failure = Failure::cast(result);
   // Try to do a garbage collection; ignore it if it fails. The C
   // entry stub will throw an out-of-memory exception in that case.
   Heap::CollectGarbage(failure->requested(), failure->allocation_space());
 }
 
 
 } }  // namespace v8::internal