src/share/vm/opto/phaseX.hpp

@@ -401,10 +401,12 @@
   virtual Node *transform_old( Node *a_node );
 
   // Subsume users of node 'old' into node 'nn'
   void subsume_node( Node *old, Node *nn );
 
+  Node_Stack _stack;      // Stack used to avoid recursion
+
 protected:
 
   // Idealize new Node 'n' with respect to its inputs and its value
   virtual Node *transform( Node *a_node );
 

@@ -436,12 +438,12 @@
   // transforms can be triggered on the region.
   // Optional 'orig' is an earlier version of this node.
   // It is significant only for debugging and profiling.
   Node* register_new_node_with_optimizer(Node* n, Node* orig = NULL);
 
-  // Kill a globally dead Node.   It is allowed to have uses which are
-  // assumed dead and left 'in limbo'.
+  // Kill a globally dead Node.  All uses are also globally dead and are
+  // aggressively trimmed.
   void remove_globally_dead_node( Node *dead );
 
   // Kill all inputs to a dead node, recursively making more dead nodes.
   // The Node must be dead locally, i.e., have no uses.
   void remove_dead_node( Node *dead ) {