Introduce code flushing of RegExp code.

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 1203 matching lines @@
   store->set(JSRegExp::kAtomPatternIndex, *data);
   regexp->set_data(*store);
 }
 
 void Factory::SetRegExpIrregexpData(Handle<JSRegExp> regexp,
                                     JSRegExp::Type type,
                                     Handle<String> source,
                                     JSRegExp::Flags flags,
                                     int capture_count) {
   Handle<FixedArray> store = NewFixedArray(JSRegExp::kIrregexpDataSize);
-
+  Smi* uninitialized = Smi::FromInt(JSRegExp::kUninitializedValue);
   store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
   store->set(JSRegExp::kSourceIndex, *source);
   store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
-  store->set(JSRegExp::kIrregexpASCIICodeIndex, HEAP->the_hole_value());
-  store->set(JSRegExp::kIrregexpUC16CodeIndex, HEAP->the_hole_value());
+  store->set(JSRegExp::kIrregexpASCIICodeIndex, uninitialized);
+  store->set(JSRegExp::kIrregexpUC16CodeIndex, uninitialized);
+  store->set(JSRegExp::kIrregexpASCIICodeSavedIndex, uninitialized);
+  store->set(JSRegExp::kIrregexpUC16CodeSavedIndex, uninitialized);
   store->set(JSRegExp::kIrregexpMaxRegisterCountIndex, Smi::FromInt(0));
   store->set(JSRegExp::kIrregexpCaptureCountIndex,
              Smi::FromInt(capture_count));
   regexp->set_data(*store);
 }
 
 
 
 void Factory::ConfigureInstance(Handle<FunctionTemplateInfo> desc,
                                 Handle<JSObject> instance,
                                 bool* pending_exception) {
   // Configure the instance by adding the properties specified by the
   // instance template.
   Handle<Object> instance_template = Handle<Object>(desc->instance_template());
   if (!instance_template->IsUndefined()) {
     Execution::ConfigureInstance(instance,
                                  instance_template,
                                  pending_exception);
   } else {
     *pending_exception = false;
   }
 }
 
 
 } }  // namespace v8::internal