-/* Die Anzahl der Aufrufer jeder Methode zählen (irg_data_t->count), und die
- * offenen Methoden (mit unbekannten Vorgänger) markieren. */
+/** Count the number of callers of each method and mark open methods.
+ *
+ * Fills the irg_data data structure.
+ * Open methods are methods with an unknown caller, I.e., methods that
+ * - are external visible
+ * - are dereferenced somewhere within the program (i.e., the address of the
+ * method is stored somewhere). */