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

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index ab721bd3af19e02e7d45eb44bdb822cea7d118e9..60d042e4a1ae94deb74f223bc06cd0b153e4cd93 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -1022,8 +1022,11 @@ class HGraphBuilder {
       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);
+  HStoreNamedField* AddStore(HValue *object, HObjectAccess* access,
+      HValue *val, Representation representation = Representation::Tagged());
+  HStoreNamedField* AddStoreMapConstant(HValue *object, Handle<Map>);
 
   class IfBuilder {
    public: