Avoid one repeated property lookup when computing load ICs.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index a846fba4164c9cf3647cbbd0297365cb8bbd03d2..2cfe8b210d272409b1a0435c914cce37908435aa 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -15166,6 +15166,13 @@ PropertyCell* GlobalObject::GetPropertyCell(LookupResult* result) {
 }
 
 
+PropertyCell* GlobalObject::GetPropertyCell(LookupIterator* lookup) {

[Toon Verwaest, 2014/07/30 16:54:53]

Let the LookupIterator return the cell instead.

[Jakob Kummerow, 2014/07/31 13:55:51]

Done.

+  ASSERT(!HasFastProperties());
+  Object* value = property_dictionary()->ValueAt(lookup->dictionary_entry());
+  return PropertyCell::cast(value);
+}
+
+
 Handle<PropertyCell> JSGlobalObject::EnsurePropertyCell(
     Handle<JSGlobalObject> global,
     Handle<Name> name) {