1 /* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
2 ** All rights reserved.
4 ** Author: Goetz Lindenmaier
6 ** traverse the type information. The walker walks the whole ir graph
7 ** to find the distinct type trees in the type graph forest.
8 ** - execute the pre function before recursion
9 ** - execute the post function after recursion
18 #include "type_or_entity.h"
20 /* Make types visible to allow most efficient access */
21 # include "entity_t.h"
23 typedef struct type_walk_env {
30 void type_walk_2(type_or_ent *tore,
31 void (pre)(type_or_ent*, void*),
32 void (post)(type_or_ent*, void*),
38 switch (get_kind(tore)) {
40 if (((entity *)tore)->visit >= type_visited) visited = 1; break;
42 if (((type_class *)tore)->visit >= type_visited) visited = 1; break;
44 if (((type_strct *)tore)->visit >= type_visited) visited = 1; break;
46 if (((type_method *)tore)->visit >= type_visited) visited = 1; break;
48 if (((type_union *)tore)->visit >= type_visited) visited = 1; break;
50 if (((type_array *)tore)->visit >= type_visited) visited = 1; break;
51 case k_type_enumeration:
52 if (((type_enumeration *)tore)->visit >= type_visited) visited = 1; break;
54 if (((type_pointer *)tore)->visit >= type_visited) visited = 1; break;
55 case k_type_primitive:
56 if (((type_primitive *)tore)->visit >= type_visited) visited = 1; break;
61 if (!visited) { /* not marked. */
63 /* execute pre method */
68 switch (get_kind(tore)) {
71 entity *ent = (entity *)tore;
72 ent->visit = type_visited;
73 type_walk_2((type_or_ent *)get_entity_owner(ent), pre, post, env);
74 type_walk_2((type_or_ent *)get_entity_type(ent), pre, post, env);
80 ((type_class *)tore)->visit = type_visited;
82 for (i=0; i<get_class_n_member((type_class *)tore); i++)
84 type_walk_2((type_or_ent *)get_class_member((type_class *)tore, i),
87 for (i=0; i<get_class_n_subtype((type_class *)tore); i++)
89 type_walk_2((type_or_ent *)get_class_subtype((type_class *)tore, i),
92 for (i=0; i<get_class_n_supertype((type_class *)tore); i++)
94 type_walk_2((type_or_ent *)get_class_supertype((type_class *)tore, i),
103 ((type_strct *)tore)->visit = type_visited;
105 for (i=0; i<get_strct_n_member((type_strct *)tore); i++)
107 type_walk_2((type_or_ent *)get_strct_member((type_strct *)tore, i),
114 type_method *meth = (type_method *)tore;
115 meth->visit = type_visited;
116 for (i = 0; i < get_method_arity(meth); i++)
117 type_walk_2((type_or_ent *)get_method_param_type(meth, i), pre, post, env);
118 for (i = 0; i < get_method_n_res(meth); i++)
119 type_walk_2((type_or_ent *)get_method_res_type(meth, i), pre, post, env);
123 ((type_union *)tore)->visit = type_visited;
127 ((type_array *)tore)->visit = type_visited;
128 type_walk_2((type_or_ent *)get_array_element_type((type_array *)tore),
131 case k_type_enumeration:
132 ((type_enumeration *)tore)->visit = type_visited;
136 ((type_pointer *)tore)->visit = type_visited;
137 type_walk_2((type_or_ent *)get_pointer_points_to_type((type_pointer *)tore),
140 case k_type_primitive:
141 ((type_primitive *)tore)->visit = type_visited;
148 /* execute post method */
156 void start_type_walk(ir_node *node, void *env) {
157 void *pre = ((type_walk_env *)env)->pre;
158 void *post = ((type_walk_env *)env)->post;
159 void *envi = ((type_walk_env *)env)->env;
163 switch (get_irn_opcode(node)) { /* node label */
165 if ( (get_SymConst_kind(node) == type_tag)
166 || (get_SymConst_kind(node) == size))
167 type_walk_2((type_or_ent *)get_SymConst_type(node), pre, post, envi);
170 type_walk_2((type_or_ent *)get_Sel_entity(node), pre, post, envi);
173 type_walk_2((type_or_ent *)get_Call_type(node), pre, post, envi);
176 type_walk_2((type_or_ent *)get_Alloc_type(node), pre, post, envi);
179 printf("here in typewalk\n");
180 type_walk_2((type_or_ent *)get_Free_type(node), pre, post, envi);
188 void type_walk(void (pre)(type_or_ent*, void*),
189 void (post)(type_or_ent*, void*),
193 type_walk_2((type_or_ent *)get_glob_type(), pre, post, env);
194 for (i = 0; i < get_irp_n_types(); i++) {
195 type_walk_2((type_or_ent *)get_irp_type(i), pre, post, env);
199 void type_walk_irg (ir_graph *irg,
200 void (pre)(type_or_ent*, void*),
201 void (post)(type_or_ent*, void*),
204 /* this is needed to pass the parameters to the walker that actually
205 walks the type information */
206 type_walk_env* type_env;
207 type_env = (type_walk_env *) malloc (sizeof(type_walk_env));
209 type_env->post = post;
213 irg_walk(get_irg_end(irg), start_type_walk, NULL, type_env);
215 type_walk_2((type_or_ent *)get_irg_ent(irg), pre, post, env);
217 /* @@@ free type_walk_env!! */