--- a/hotspot/src/share/vm/c1/c1_Runtime1.cpp	Mon Jul 07 12:37:11 2014 +0200
+++ b/hotspot/src/share/vm/c1/c1_Runtime1.cpp	Mon Jul 07 10:12:40 2014 +0200
@@ -1050,6 +1050,7 @@
               n_copy->set_data((intx) (load_klass()));
             } else {
               assert(mirror() != NULL, "klass not set");
+              // Don't need a G1 pre-barrier here since we assert above that data isn't an oop.
               n_copy->set_data(cast_from_oop<intx>(mirror()));
             }