Thanks for your interest to contribute to GCC.
This request should be directed to the GNU Fortran mailing list.
Thanks, David
On Thu, Jul 10, 2025 at 1:44 PM 泽邦 贺 via Gcc <gcc@gcc.gnu.org> wrote:
> Dear GCC developers,
>
> Hello everyone!
>
> I am a member of the OSPP open source community who is very interested in
> C language and GCC development. I am currently adding multi-versioning
> support to GFortran. Specifically, I am adding `target` and `target_clones`
> support at the function and subroutine level for the Fortran language.
>
> Since Fortran does not support as many attributes as C, my current
> multi-parameter implementation of `target_clones` is based on GCC,
> specifically the following syntax:
>
> SUBROUTINE calculate(x, y, ans_val)
> !GCC$ ATTRIBUTES TARGET_CLONES('default', 'avx', 'avx512f') ::
> calculate
> DOUBLE PRECISION, INTENT(IN) :: x, y
> DOUBLE PRECISION, INTENT(OUT) :: ans_val
>
> ans_val = x * y + x / y
> END SUBROUTINE calculate
>
> I have implemented multi-string parsing in the frontend following GCC's
> logic, and it currently seems works properly. However, I am still writing
> tests and refining the details. My questions are:
>
> 1. Does the GCC community consider such syntax to have practical value and
> necessity for the Fortran language?
> 2. Are there better or more Fortran-friendly declaration syntax options?
> 3. What are the upstream expectations for the implementation of this
> multi-version feature?
>
> I look forward to hearing everyone's valuable opinions and suggestions.
> Thank you!
>
>
> Zebang HE
>
> hezam...@outlook.com
>
