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 8df7a297269fb1000e7ed8eacc5fbcb58fbbd2ea..4a089e38b35e6b75ff4a3368e17a3b885fd73b61 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -999,17 +999,19 @@ class HGraphBuilder {
       bool is_store,
       KeyedAccessStoreMode store_mode);
 
-  HValue* BuildCheckForCapacityGrow(HValue* object,
-                                    HValue* elements,
-                                    ElementsKind kind,
-                                    HValue* length,
-                                    HValue* key,
-                                    bool is_js_array);
+  HValue* BuildCheckForCapacityGrow(

[danno, 2013/05/08 12:05:35]

In general, please avoid extraneous whitespace changes, they just make the
likelihood of being able to merge this patch to other branches in other contexts
lower. If you want to do whitespace cleanup (in this case it's a bit iffy if
it's necessary), then please in another CL.

[titzer, 2013/05/08 15:15:45]

Done.

+      HValue* object,
+      HValue* elements,
+      ElementsKind kind,
+      HValue* length,
+      HValue* key,
+      bool is_js_array);
 
-  HValue* BuildCopyElementsOnWrite(HValue* object,
-                                   HValue* elements,
-                                   ElementsKind kind,
-                                   HValue* length);
+  HValue* BuildCopyElementsOnWrite(
+      HValue* object,
+      HValue* elements,
+      ElementsKind kind,
+      HValue* length);
 
   HInstruction* BuildUncheckedMonomorphicElementAccess(
       HValue* object,
@@ -1022,8 +1024,19 @@ 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,
+      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);