diff -r 7e0e43cf86d6 -r 670a74b863fc src/share/vm/opto/matcher.cpp
--- a/src/share/vm/opto/matcher.cpp	Wed Nov 09 06:14:32 2011 -0800
+++ b/src/share/vm/opto/matcher.cpp	Wed Nov 09 07:25:51 2011 -0800
@@ -1915,7 +1915,7 @@
         set_dontcare(n);
         break;
       case Op_Jump:
-        mstack.push(n->in(1), Visit);         // Switch Value
+        mstack.push(n->in(1), Pre_Visit);     // Switch Value (could be shared)
         mstack.push(n->in(0), Pre_Visit);     // Visit Control input
         continue;                             // while (mstack.is_nonempty())
       case Op_StrComp: