introduced node index: a small unique per graph node number

[libfirm] / ir / ir / irnode.h

diff --git a/ir/ir/irnode.h b/ir/ir/irnode.h
index d327f51..b0774ce 100644 (file)
--- a/ir/ir/irnode.h
+++ b/ir/ir/irnode.h
@@ -1162,6 +1162,12 @@ unsigned register_additional_node_data(unsigned size);
  */
 void *get_irn_generic_attr(ir_node *node);
 
+/**
+ * Returns the unique node index for the node in its graph.
+ * This index is used to access phase information for this node.
+ */
+unsigned get_irn_idx(const ir_node *node);
+
 /*-----------------------------------------------------------------*/
 /** Debug aides                                                   **/
 /*-----------------------------------------------------------------*/