Bugfix in hydrogen array literal code generation.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index e3bca3bfafabc901e0cc5b70b24faf953354aa2a..21d2cd1198fc1691f252693973932915f8ac8110 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -6064,6 +6064,11 @@ void HOptimizedGraphBuilder::VisitArrayLiteral(ArrayLiteral* expr) {
                                  isolate()->factory()->empty_string(),
                                  Runtime::FunctionForId(function_id),
                                  3));
+
+    // De-opt if elements kind changed from boilerplate_elements_kind

[Yang, 2013/06/19 13:40:30]

add a period at the end of the comment.

[mvstanton, 2013/06/19 13:46:51]

Done.

+    Handle<Map> map = Handle<Map>(original_boilerplate_object->map(),
+                                  isolate());
+    AddInstruction(HCheckMaps::New(literal, map, zone()));
   }
 
   // The array is expected in the bailout environment during computation