/* Search the last definition of the block. */
sched_foreach_reverse(block, def) {
if (is_definition(env, def)) {
constr_info *info = get_info(env, def);
/* Search the last definition of the block. */
sched_foreach_reverse(block, def) {
if (is_definition(env, def)) {
constr_info *info = get_info(env, def);