Migrate instance of deprecated maps in HCheckMaps.

src/runtime.cc

 // Copyright 2012 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 13462 matching lines @@
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_FlattenString) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(String, str, 0);
   FlattenString(str);
   return isolate->heap()->undefined_value();
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_MigrateInstance) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, object, 0);
+  if (!object->IsJSObject()) return Smi::FromInt(0);
+  Handle<JSObject> js_object = Handle<JSObject>::cast(object);
+  if (!js_object->map()->is_deprecated()) return Smi::FromInt(0);
+  JSObject::MigrateInstance(js_object);
+  return *object;
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetFromCache) {
   SealHandleScope shs(isolate);
   // This is only called from codegen, so checks might be more lax.
   CONVERT_ARG_CHECKED(JSFunctionResultCache, cache, 0);
   Object* key = args[1];
 
   int finger_index = cache->finger_index();
   Object* o = cache->get(finger_index);
   if (o == key) {
     // The fastest case: hit the same place again.
@@ skipping 460 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal