Introduce HObjectAccess, which is used by LoadNamedField and StoreNamedField to denote what parts

src/hydrogen.h

 // 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 1004 matching lines @@
       HValue* object,
       HValue* key,
       HValue* val,
       HCheckMaps* mapcheck,
       bool is_js_array,
       ElementsKind elements_kind,
       bool is_store,
       KeyedAccessStoreMode store_mode,
       Representation checked_index_representation = Representation::None());
 
-  HInstruction* BuildStoreMap(HValue* object, HValue* map);
-  HInstruction* BuildStoreMap(HValue* object, Handle<Map> map);
+  HLoadNamedField * AddLoad(
+      HValue *object,
+      HObjectAccess access,
+      HValue *typecheck = NULL,
+      Representation representation = Representation::Tagged());
+
+  HStoreNamedField* AddStore(
+      HValue *object,
+      HObjectAccess access,
+      HValue *val,
+      Representation representation = Representation::Tagged());
+
+  HStoreNamedField* AddStoreMapConstant(HValue *object, Handle<Map>);
 
   HLoadNamedField* AddLoadElements(HValue *object, HValue *typecheck = NULL);
 
   class IfBuilder {
    public:
     explicit IfBuilder(HGraphBuilder* builder,
                        int position = RelocInfo::kNoPosition);
     IfBuilder(HGraphBuilder* builder,
               HIfContinuation* continuation);
 
@@ skipping 968 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_