[Bug c/80502] Provide macro to indicate OpenMP SIMD support

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80502

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
_OPENMP_SIMD is a bad idea, that namespace is reserved for OpenMP, so unless it
shows up in the OpenMP standard, it shouldn't be added.
Why do you need a macro?  Just use #pragma omp simd etc. unconditionally,
compilers that don't have support for such pragmas will just ignore those.