Create AllocationSite objects, pointed to by AllocationSiteInfo.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index d97a4778afba13fa8307a7e5c6baa74195765824..b1267004328a3e874e4f5edd0f01b87728234415 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -211,8 +211,9 @@ static MaybeObject* ArrayCodeGenericCommon(Arguments* args,
 
     if (FLAG_optimize_constructed_arrays) {
       AllocationSiteInfo* info = AllocationSiteInfo::FindForJSObject(array);
-      ElementsKind to_kind = array->GetElementsKind();
-      if (info != NULL && info->GetElementsKindPayload(&to_kind)) {
+      if (info != NULL) {
+        AllocationSite* site = AllocationSite::cast(info->payload());
+        ElementsKind to_kind = site->GetElementsKindPayload();
         if (IsMoreGeneralElementsKindTransition(array->GetElementsKind(),
                                                 to_kind)) {
           // We have advice that we should change the elements kind