Could you move those thead_* and th_* functions into thead.cc
> +static bool
> +thead_mempair_operand_p (rtx mem, machine_mode mode)
> +{
> + if (!MEM_SIZE_KNOWN_P (mem))
> + return false;
> +
> + /* Only DI or SI mempair instructions exist. */add gcc_assert (mode == SImode || mode == DImode); here
