diff -r de141433919f -r 9c2ecc2ffb12 src/share/vm/opto/cfgnode.hpp
--- a/src/share/vm/opto/cfgnode.hpp	Thu Jul 03 11:01:32 2008 -0700
+++ b/src/share/vm/opto/cfgnode.hpp	Fri Jul 11 01:14:44 2008 -0700
@@ -129,7 +129,7 @@
   };
 
   PhiNode( Node *r, const Type *t, const TypePtr* at = NULL,
-           const int iid = TypeOopPtr::UNKNOWN_INSTANCE,
+           const int iid = TypeOopPtr::InstanceTop,
            const int iidx = Compile::AliasIdxTop,
            const int ioffs = Type::OffsetTop )
     : TypeNode(t,r->req()),