hashval_t hashcode = iterative_hash_object (TYPE_HASH (elt_type), 0);
if (index_type)
hashcode = iterative_hash_object (TYPE_HASH (index_type), hashcode);
hashval_t hashcode = iterative_hash_object (TYPE_HASH (elt_type), 0);
if (index_type)
hashcode = iterative_hash_object (TYPE_HASH (index_type), hashcode);