*** old/src/share/vm/opto/split_if.cpp	Thu Jan  7 16:01:58 2010
--- new/src/share/vm/opto/split_if.cpp	Thu Jan  7 16:01:58 2010

*** 217,226 ****
--- 217,227 ----
    return true;
  }
  
  //------------------------------register_new_node------------------------------
  void PhaseIdealLoop::register_new_node( Node *n, Node *blk ) {
+   assert(!n->is_CFG(), "must be data node");
    _igvn.register_new_node_with_optimizer(n);
    set_ctrl(n, blk);
    IdealLoopTree *loop = get_loop(blk);
    if( !loop->_child )
      loop->_body.push(n);