[stubs] Cleanup storing of maps to objects.

src/ic/keyed-store-generic.cc

 // Copyright 2016 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/ic/keyed-store-generic.h"
 
 #include "src/code-factory.h"
 #include "src/code-stub-assembler.h"
 #include "src/contexts.h"
 #include "src/ic/accessor-assembler-impl.h"
@@ skipping 131 matching lines @@
 
   // Found a supported transition target map, perform the transition!
   Bind(&perform_transition);
   {
     if (IsFastDoubleElementsKind(from_kind) !=
         IsFastDoubleElementsKind(to_kind)) {
       Node* capacity = SmiUntag(LoadFixedArrayBaseLength(elements));
       GrowElementsCapacity(receiver, elements, from_kind, to_kind, capacity,
                            capacity, INTPTR_PARAMETERS, bailout);
     }
-    StoreObjectField(receiver, JSObject::kMapOffset, var_target_map.value());
+    StoreMap(receiver, var_target_map.value());
   }
 }
 
 void KeyedStoreGenericAssembler::TryChangeToHoleyMapHelper(
     Node* receiver, Node* receiver_map, Node* native_context,
     ElementsKind packed_kind, ElementsKind holey_kind, Label* done,
     Label* map_mismatch, Label* bailout) {
   Node* packed_map =
       LoadContextElement(native_context, Context::ArrayMapIndex(packed_kind));
   GotoIf(WordNotEqual(receiver_map, packed_map), map_mismatch);
   if (AllocationSite::GetMode(packed_kind, holey_kind) ==
       TRACK_ALLOCATION_SITE) {
     TrapAllocationMemento(receiver, bailout);
   }
   Node* holey_map =
       LoadContextElement(native_context, Context::ArrayMapIndex(holey_kind));
-  StoreObjectField(receiver, JSObject::kMapOffset, holey_map);
+  StoreMap(receiver, holey_map);
   Goto(done);
 }
 
 void KeyedStoreGenericAssembler::TryChangeToHoleyMap(
     Node* receiver, Node* receiver_map, Node* current_elements_kind,
     Node* context, ElementsKind packed_kind, Label* bailout) {
   ElementsKind holey_kind = GetHoleyElementsKind(packed_kind);
   Label already_holey(this);
 
   GotoIf(Word32Equal(current_elements_kind, Int32Constant(holey_kind)),
@@ skipping 599 matching lines @@
   Bind(&slow);
   {
     Comment("KeyedStoreGeneric_slow");
     TailCallRuntime(Runtime::kSetProperty, context, receiver, name, value,
                     SmiConstant(language_mode));
   }
 }
 
 }  // namespace internal
 }  // namespace v8