-/* garbage collect methods: mark and remove */
-void gc_irgs(int n_keep, ir_entity ** keep_arr) {
- void * MARK = &MARK; /* @@@ gefaehrlich!!! Aber wir markieren hoechstens zu viele ... */
- int i;
-
- FIRM_DBG_REGISTER(dbg, "firm.opt.cgopt");
-
- if (n_keep >= get_irp_n_irgs()) {
- /* Shortcut. Obviously we have to keep all methods. */
- return;
- }
-
- /* Mark entities that are alive. */
- if (n_keep > 0) {
- ir_entity ** marked = NEW_ARR_F(ir_entity *, n_keep);
- for (i = 0; i < n_keep; ++i) {
- marked[i] = keep_arr[i];
- set_entity_link(marked[i], MARK);
- DB((dbg, LEVEL_2, "dead method elimination: method %s kept alive.\n",
- get_entity_ld_name(marked[i])));
- }
-
- for (i = 0; i < ARR_LEN(marked); ++i) {
- /* check for extern methods, these don't have an IRG */
- if (get_entity_visibility(marked[i]) != visibility_external_allocated) {
- ir_graph * irg = get_entity_irg(marked[i]);
- ir_node * node = get_irg_end(irg);
-
- /* collect calls */
- irg_walk_graph(irg, firm_clear_link, collect_call, node);
-
- /* iterate calls */
- for (node = get_irn_link(node); node; node = get_irn_link(node)) {
- int i;
- assert(get_irn_op(node) == op_Call);
-
- for (i = get_Call_n_callees(node) - 1; i >= 0; --i) {
- ir_entity * ent = get_Call_callee(node, i);
-
- if (get_entity_irg(ent) && get_entity_link(ent) != MARK) {
- set_entity_link(ent, MARK);
- ARR_APP1(ir_entity *, marked, ent);
-
- DB((dbg, LEVEL_2, "dead method elimination: method %s can be "
- "called from Call %ld: kept alive.\n",
- get_entity_ld_name(ent), get_irn_node_nr(node)));
- }
- }
- }
- }
- }
- DEL_ARR_F(marked);
- }
-
- /* clean */
- type_walk(make_entity_to_description, NULL, MARK);
- for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
- ir_graph * irg = get_irp_irg(i);
- ir_entity * ent = get_irg_entity(irg);
- /* Removing any graph invalidates all interprocedural loop trees. */
- if (get_irg_loopinfo_state(irg) == loopinfo_ip_consistent ||
- get_irg_loopinfo_state(irg) == loopinfo_ip_inconsistent) {
- free_loop_information(irg);
- }
- if ((get_entity_visibility(ent) == visibility_local) && (get_entity_link(ent) != MARK)) {
- remove_irp_irg(irg);
- set_entity_peculiarity(ent, peculiarity_description);
-
- DB((dbg, LEVEL_2, "dead method elimination: freeing method %s\n",
- get_entity_ld_name(ent)));
- }
- set_entity_link(ent, NULL);
- }