+ ir_graph *rem = current_ir_graph;
+ /* this is needed to pass the parameters to the walker that actually
+ walks the type information */
+ type_walk_env type_env;
+ type_or_ent cont;
+
+ type_env.pre = pre;
+ type_env.post = post;
+ type_env.env = env;
+
+ current_ir_graph = irg;
+
+ /* We walk over the irg to find all IR-nodes that contain an attribute
+ with type information. If we find one we call a type walker to
+ touch the reachable type information.
+ The same type can be referenced by several IR-nodes. To avoid
+ repeated visits of the same type node we must decrease the
+ type visited flag for each walk. This is done in start_type_walk().
+ Here we initially increase the flag. We only call do_type_walk that does
+ not increase the flag.
+ */
+ inc_master_type_visited();
+ irg_walk(get_irg_end(irg), start_type_walk, NULL, &type_env);
+
+ cont.ent = get_irg_entity(irg);
+ do_type_walk(cont, pre, post, env);
+
+ cont.typ = get_irg_frame_type(irg);
+ do_type_walk(cont, pre, post, env);
+
+ current_ir_graph = rem;
+}
+
+static void type_walk_s2s_2(type_or_ent tore,
+ type_walk_func *pre,
+ type_walk_func *post,
+ void *env)
+{
+ type_or_ent cont;
+ int i, n;
+
+ /* marked? */
+ switch (get_kind(tore.ent)) {
+ case k_entity:
+ if (entity_visited(tore.ent)) return;
+ break;
+ case k_type:
+ if (type_id == get_type_tpop(tore.typ)) {
+ cont.typ = skip_tid(tore.typ);
+ type_walk_s2s_2(cont, pre, post, env);
+ return;
+ }
+ if (type_visited(tore.typ)) return;
+ break;
+ default:
+ break;
+ }
+
+ /* iterate */
+ switch (get_kind(tore.typ)) {
+ case k_type:
+ {
+ ir_type *tp = tore.typ;
+ mark_type_visited(tp);
+ switch (get_type_tpop_code(tp)) {
+ case tpo_class:
+ {
+ n = get_class_n_supertypes(tp);
+ for (i = 0; i < n; ++i) {
+ cont.typ = get_class_supertype(tp, i);
+ type_walk_s2s_2(cont, pre, post, env);
+ }
+ /* execute pre method */
+ if (pre)
+ pre(tore, env);
+ tp = skip_tid(tp);
+
+ n = get_class_n_subtypes(tp);
+ for (i = 0; i < n; ++i) {
+ cont.typ = get_class_subtype(tp, i);
+ type_walk_s2s_2(cont, pre, post, env);
+ }
+
+ /* execute post method */
+ if (post)
+ post(tore, env);
+ }
+ break;
+ case tpo_struct:
+ case tpo_method:
+ case tpo_union:
+ case tpo_array:
+ case tpo_enumeration:
+ case tpo_pointer:
+ case tpo_primitive:
+ case tpo_id:
+ /* dont care */
+ break;
+ default:
+ printf(" *** Faulty type! \n");
+ break;
+ }
+ } break; /* end case k_type */
+ case k_entity:
+ /* don't care */
+ break;
+ default:
+ printf(" *** Faulty type or entity! \n");
+ break;
+ }
+}
+
+void type_walk_super2sub(type_walk_func *pre,
+ type_walk_func *post,
+ void *env)
+{
+ type_or_ent cont;
+ int i, n_types = get_irp_n_types();
+
+ inc_master_type_visited();
+ cont.typ = get_glob_type();
+ type_walk_s2s_2(cont, pre, post, env);
+ for (i = 0; i < n_types; ++i) {
+ cont.typ = get_irp_type(i);
+ type_walk_s2s_2(cont, pre, post, env);
+ }
+}
+
+/*****************************************************************************/
+
+static void
+type_walk_super_2(type_or_ent tore,
+ type_walk_func *pre,
+ type_walk_func *post,
+ void *env) {
+ type_or_ent cont;
+ int i, n;
+
+ /* marked? */
+ switch (get_kind(tore.ent)) {
+ case k_entity:
+ if (entity_visited(tore.ent))
+ return;
+ break;
+ case k_type:
+ if (type_id == get_type_tpop(tore.typ)) {
+ cont.typ = skip_tid(tore.typ);
+ type_walk_super_2(cont, pre, post, env);
+ return;
+ }
+ if (type_visited(tore.typ))
+ return;
+ break;
+ default:
+ break;
+ }
+
+ /* iterate */
+ switch (get_kind(tore.typ)) {
+ case k_type:
+ {
+ ir_type *tp = tore.typ;
+ mark_type_visited(tp);
+ switch (get_type_tpop_code(tp)) {
+ case tpo_class:
+ {
+ /* execute pre method */
+ if (pre)
+ pre(tore, env);
+ tp = skip_tid(tp);
+
+ n = get_class_n_supertypes(tp);
+ for (i = 0; i < n; ++i) {
+ cont.typ = get_class_supertype(tp, i);
+ type_walk_super_2(cont, pre, post, env);
+ }
+
+ /* execute post method */
+ if (post)
+ post(tore, env);
+ }
+ break;
+ case tpo_struct:
+ case tpo_method:
+ case tpo_union:
+ case tpo_array:
+ case tpo_enumeration:
+ case tpo_pointer:
+ case tpo_primitive:
+ case tpo_id:
+ /* don't care */
+ break;
+ default:
+ printf(" *** Faulty type! \n");
+ break;
+ }
+ } break; /* end case k_type */
+ case k_entity:
+ /* don't care */
+ break;
+ default:
+ printf(" *** Faulty type or entity! \n");
+ break;
+ }
+}
+
+void type_walk_super(type_walk_func *pre,
+ type_walk_func *post,
+ void *env) {
+ int i, n_types = get_irp_n_types();
+ type_or_ent cont;
+
+ inc_master_type_visited();
+ cont.typ = get_glob_type();
+ type_walk_super_2(cont, pre, post, env);
+ for (i = 0; i < n_types; ++i) {
+ cont.typ = get_irp_type(i);
+ type_walk_super_2(cont, pre, post, env);
+ }
+}
+
+/*****************************************************************************/
+
+
+static void
+class_walk_s2s_2(ir_type *tp,
+ class_walk_func *pre,
+ class_walk_func *post,
+ void *env)
+{
+ int i, n;
+
+ /* marked? */
+ if (type_visited(tp)) return;
+
+ assert(is_Class_type(tp));
+ /* Assure all supertypes are visited before */
+ n = get_class_n_supertypes(tp);
+ for (i = 0; i < n; ++i) {
+ if (type_not_visited(get_class_supertype(tp, i)))
+ return;
+ }
+
+ mark_type_visited(tp);
+
+ /* execute pre method */
+ if (pre)
+ pre(tp, env);
+
+ tp = skip_tid(tp);
+ n = get_class_n_subtypes(tp);
+ for (i = 0; i < n; ++i) {
+ class_walk_s2s_2(get_class_subtype(tp, i), pre, post, env);
+ }
+ /* execute post method */
+ if (post)
+ post(tp, env);
+}
+
+void class_walk_super2sub(class_walk_func *pre,
+ class_walk_func *post,
+ void *env)
+{
+ int i, n_types = get_irp_n_types();
+ ir_type *tp;
+
+ inc_master_type_visited();
+ for (i = 0; i < n_types; i++) {
+ tp = get_irp_type(i);
+ if (is_Class_type(tp) &&
+ (get_class_n_supertypes(tp) == 0) &&
+ type_not_visited(tp)) {
+ assert(! is_frame_type(tp));
+ assert(tp != get_glob_type());
+ class_walk_s2s_2(tp, pre, post, env);
+ }
+ }
+}
+
+
+/* Walks over all entities in the type */
+void walk_types_entities(ir_type *tp,
+ entity_walk_func *doit,
+ void *env)
+{
+ int i, n;
+
+ switch (get_type_tpop_code(tp)) {
+ case tpo_class:
+ n = get_class_n_members(tp);
+ for (i = 0; i < n; ++i)
+ doit(get_class_member(tp, i), env);
+ break;
+ case tpo_struct:
+ n = get_struct_n_members(tp);
+ for (i = 0; i < n; ++i)
+ doit(get_struct_member(tp, i), env);
+ break;
+ case tpo_union:
+ n = get_union_n_members(tp);
+ for (i = 0; i < n; ++i)
+ doit(get_union_member(tp, i), env);
+ break;
+ case tpo_array:
+ doit(get_array_element_entity(tp), env);
+ break;
+ case tpo_method:
+ case tpo_enumeration:
+ case tpo_pointer:
+ case tpo_primitive:
+ case tpo_id:
+ default:
+ break;
+ }