--- a/hotspot/src/share/vm/opto/lcm.cpp	Tue Jan 22 11:31:25 2013 -0800
+++ b/hotspot/src/share/vm/opto/lcm.cpp	Tue Jan 22 15:34:16 2013 -0800
@@ -175,6 +175,7 @@
     case Op_StrEquals:
     case Op_StrIndexOf:
     case Op_AryEq:
+    case Op_EncodeISOArray:
       // Not a legit memory op for implicit null check regardless of
       // embedded loads
       continue;