> So I would just do:
>
>
> tmp = force_reg (word_mode, x);
> add_input_operand (TYPE_MODE (TREE_TYPE (arg)), tmp);
>
> In the thead specific code. That generates the initial code correctly.
> At that point we just need to make sure nothing like combine, cprop, etc
> propagates the constant into the vsetvl. The way to prevent that is
> with the operand predicates on the vsetvl insns.
>
> jeff
Thank you so much for your patient guidance. I understand what you mean and
will update the patch accordingly :)
BR
Jin
