extern void trivial_regty_init(union regval *v);
extern void trivial_regty_release(union regval *v);
extern void allocate_bytes(union regval *v, size_t sz);
extern void trivial_regty_init(union regval *v);
extern void trivial_regty_release(union regval *v);
extern void allocate_bytes(union regval *v, size_t sz);