Reimplement SetProperty using the LookupIterator

src/ic.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/codegen.h"
@@ skipping 1263 matching lines @@
   }
 
   return true;
 }
 
 
 MaybeHandle<Object> StoreIC::Store(Handle<Object> object,
                                    Handle<String> name,
                                    Handle<Object> value,
                                    JSReceiver::StoreFromKeyed store_mode) {
+  // TODO(verwaest): Let SetProperty do the migration, since storing a property
+  // might deprecate the current map again, if value does not fit.
   if (MigrateDeprecated(object) || object->IsJSProxy()) {
     Handle<JSReceiver> receiver = Handle<JSReceiver>::cast(object);
     Handle<Object> result;
     ASSIGN_RETURN_ON_EXCEPTION(
         isolate(), result,
         JSReceiver::SetProperty(receiver, name, value, strict_mode()), Object);
     return result;
   }
 
   // If the object is undefined or null it's illegal to try to set any
@@ skipping 456 matching lines @@
     } else {
       return STANDARD_STORE;
     }
   }
 }
 
 
 MaybeHandle<Object> KeyedStoreIC::Store(Handle<Object> object,
                                         Handle<Object> key,
                                         Handle<Object> value) {
+  // TODO(verwaest): Let SetProperty do the migration, since storing a property
+  // might deprecate the current map again, if value does not fit.
   if (MigrateDeprecated(object)) {
     Handle<Object> result;
     ASSIGN_RETURN_ON_EXCEPTION(
         isolate(),
         result,
         Runtime::SetObjectProperty(
             isolate(), object, key, value, strict_mode()),
         Object);
     return result;
   }
@@ skipping 1307 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal