case FILTER_OP_LOAD_FIELD_U8:
case FILTER_OP_LOAD_FIELD_U16:
case FILTER_OP_LOAD_FIELD_U32:
case FILTER_OP_LOAD_FIELD_U64:
{
/* Pop 1, push 1 */
case FILTER_OP_LOAD_FIELD_U8:
case FILTER_OP_LOAD_FIELD_U16:
case FILTER_OP_LOAD_FIELD_U32:
case FILTER_OP_LOAD_FIELD_U64:
{
/* Pop 1, push 1 */