Becuase of cross-context calls, hydrogen-based Array constructor needs to ensure

test/mjsunit/allocation-site-info.js

Index: test/mjsunit/allocation-site-info.js
diff --git a/test/mjsunit/allocation-site-info.js b/test/mjsunit/allocation-site-info.js
index d85ce3ef533a3743b99373e536588e8c9e595fa9..d43d2630671b907addd7d37709e479d0b2eeaa85 100644
--- a/test/mjsunit/allocation-site-info.js
+++ b/test/mjsunit/allocation-site-info.js
@@ -41,7 +41,7 @@
 
 // support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8));
 support_smi_only_arrays = true;
-optimize_constructed_arrays = false;
+optimize_constructed_arrays = true;
 
 if (support_smi_only_arrays) {
   print("Tests include smi-only arrays.");
@@ -284,5 +284,25 @@ if (support_smi_only_arrays) {
     assertKind(elements_kind.fast, obj);
     obj = newarraycase_list_smiobj(2);
     assertKind(elements_kind.fast, obj);
+
+    // Verify that cross context calls work
+    var realmA = Realm.current();
+    var realmB = Realm.create();
+    assertEquals(0, realmA);
+    assertEquals(1, realmB);
+
+    function instanceof_check(type) {
+      assertTrue(new type() instanceof type);
+      assertTrue(new type(5) instanceof type);
+      assertTrue(new type(1,2,3) instanceof type);
+    }
+
+    var realmBArray = Realm.eval(realmB, "Array");
+    instanceof_check(Array);
+    instanceof_check(realmBArray);
+    %OptimizeFunctionOnNextCall(instanceof_check);
+    instanceof_check(Array);
+    instanceof_check(realmBArray);
+    assertTrue(2 != %GetOptimizationStatus(instanceof_check));
   }
 }