diff -r de141433919f -r 9c2ecc2ffb12 src/share/vm/opto/cfgnode.cpp
--- a/src/share/vm/opto/cfgnode.cpp	Thu Jul 03 11:01:32 2008 -0700
+++ b/src/share/vm/opto/cfgnode.cpp	Fri Jul 11 01:14:44 2008 -0700
@@ -708,12 +708,12 @@
 // Split out an instance type from a bottom phi.
 PhiNode* PhiNode::split_out_instance(const TypePtr* at, PhaseIterGVN *igvn) const {
   const TypeOopPtr *t_oop = at->isa_oopptr();
-  assert(t_oop != NULL && t_oop->is_instance(), "expecting instance oopptr");
+  assert(t_oop != NULL && t_oop->is_known_instance(), "expecting instance oopptr");
   const TypePtr *t = adr_type();
   assert(type() == Type::MEMORY &&
          (t == TypePtr::BOTTOM || t == TypeRawPtr::BOTTOM ||
-          t->isa_oopptr() && !t->is_oopptr()->is_instance() &&
-          t->is_oopptr()->cast_to_instance(t_oop->instance_id()) == t_oop),
+          t->isa_oopptr() && !t->is_oopptr()->is_known_instance() &&
+          t->is_oopptr()->cast_to_instance_id(t_oop->instance_id()) == t_oop),
          "bottom or raw memory required");
 
   // Check if an appropriate node already exists.
@@ -854,7 +854,8 @@
   // Until we have harmony between classes and interfaces in the type
   // lattice, we must tread carefully around phis which implicitly
   // convert the one to the other.
-  const TypeInstPtr* ttip = _type->isa_narrowoop() ? _type->isa_narrowoop()->make_oopptr()->isa_instptr() :_type->isa_instptr();
+  const TypePtr* ttp = _type->make_ptr();
+  const TypeInstPtr* ttip = (ttp != NULL) ? ttp->isa_instptr() : NULL;
   bool is_intf = false;
   if (ttip != NULL) {
     ciKlass* k = ttip->klass();
@@ -873,7 +874,8 @@
       // of all the input types.  The lattice is not distributive in
       // such cases.  Ward off asserts in type.cpp by refusing to do
       // meets between interfaces and proper classes.
-      const TypeInstPtr* tiip = ti->isa_narrowoop() ? ti->is_narrowoop()->make_oopptr()->isa_instptr() : ti->isa_instptr();
+      const TypePtr* tip = ti->make_ptr();
+      const TypeInstPtr* tiip = (tip != NULL) ? tip->isa_instptr() : NULL;
       if (tiip) {
         bool ti_is_intf = false;
         ciKlass* k = tiip->klass();
@@ -930,13 +932,14 @@
     // class-typed Phi and an interface flows in, it's possible that the meet &
     // join report an interface back out.  This isn't possible but happens
     // because the type system doesn't interact well with interfaces.
-    const TypeInstPtr *jtip = jt->isa_narrowoop() ? jt->isa_narrowoop()->make_oopptr()->isa_instptr() : jt->isa_instptr();
+    const TypePtr *jtp = jt->make_ptr();
+    const TypeInstPtr *jtip = (jtp != NULL) ? jtp->isa_instptr() : NULL;
     if( jtip && ttip ) {
       if( jtip->is_loaded() &&  jtip->klass()->is_interface() &&
           ttip->is_loaded() && !ttip->klass()->is_interface() ) {
         // Happens in a CTW of rt.jar, 320-341, no extra flags
         assert(ft == ttip->cast_to_ptr_type(jtip->ptr()) ||
-               ft->isa_narrowoop() && ft->isa_narrowoop()->make_oopptr() == ttip->cast_to_ptr_type(jtip->ptr()), "");
+               ft->isa_narrowoop() && ft->make_ptr() == ttip->cast_to_ptr_type(jtip->ptr()), "");
         jt = ft;
       }
     }