*** old/src/share/vm/opto/compile.cpp	Fri Dec 12 19:19:37 2008
--- new/src/share/vm/opto/compile.cpp	Fri Dec 12 19:19:37 2008

*** 2190,2199 ****
--- 2190,2200 ----
      }
      break;
  
    case Op_DecodeN:
      assert(!n->in(1)->is_EncodeP(), "should be optimized out");
+     assert(n->in(0) == NULL, "no control");
      break;
  
    case Op_EncodeP: {
      Node* in1 = n->in(1);
      if (in1->is_DecodeN()) {