+/**
+ * Sets the debug information of a node.
+ *
+ * @param n The node.
+ * @param db The debug info.
+ */
+void set_irn_dbg_info(ir_node *n, dbg_info *db);
+
+/**
+ * Returns the debug information of an node.
+ *
+ * @param n The node.
+ */
+dbg_info *get_irn_dbg_info(const ir_node *n);
+