> Sorry, I was not aware of this patch.
> Since Jeff's patch was here first and also includes more tests, I
> propose to move forward with his patch (but I'm not a maintainer!).
> Therefore, I've reviewed Jeff's patch and replied to his email.
>
> FWIW: Jeff's patch can be found here:
>    https://gcc.gnu.org/pipermail/gcc-patches/2023-June/622233.html

No problem.

And I would tend to remove the D03 constraint if we used const_0_3_operand.

BR

Liao  Shihua