1 /* -------------------------------------------------------------------
3 * -------------------------------------------------------------------
4 * Entfernen von nicht erreichbaren (aufrufbaren) Methoden. Die Menge
5 * der nicht erreichbaren Methoden wird aus der Abschätzung der
6 * Aufrufrelation bestimmt.
8 * Erstellt: Hubert Schmid, 09.06.2002
9 * ---------------------------------------------------------------- */
19 static void clear_link(ir_node * node, void * env) {
20 set_irn_link(node, NULL);
24 /* Call-Operationen an die "link"-Liste von "call_head" anhängen. */
25 static void collect_call(ir_node * node, ir_node * head) {
26 if (get_irn_op(node) == op_Call) {
27 set_irn_link(node, get_irn_link(head));
28 set_irn_link(head, node);
34 /* garbage collect methods: mark and remove */
35 void gc_irgs(int n_keep, entity ** keep_arr) {
41 entity ** marked = NEW_ARR_F(entity *, n_keep);
42 for (i = 0; i < n_keep; ++i) {
43 marked[i] = keep_arr[i];
44 set_entity_link(marked[i], MARK);
46 for (i = 0; i < ARR_LEN(marked); ++i) {
47 ir_graph * irg = get_entity_irg(marked[i]);
48 ir_node * node = get_irg_end(irg);
50 irg_walk_graph(irg, clear_link, (irg_walk_func *) collect_call, node);
52 for (node = get_irn_link(node); node; node = get_irn_link(node)) {
54 assert(get_irn_op(node) == op_Call);
55 for (i = get_Call_n_callees(node) - 1; i >= 0; --i) {
56 entity * ent = get_Call_callee(node, i);
57 if (ent && get_entity_irg(ent) && get_entity_link(ent) != MARK) {
58 set_entity_link(ent, MARK);
59 ARR_APP1(entity *, marked, ent);
68 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
69 ir_graph * irg = get_irp_irg(i);
70 entity * ent = get_irg_ent(irg);
71 if (get_entity_link(ent) != MARK) {
73 set_entity_peculiarity(ent, description);
75 set_entity_link(ent, NULL);