https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88602
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Jean-Michaël Celerier from comment #4) > Another vote for this. It's used in the KFR DSP library which for this > reason gets restricted to clang in some configurations... > > Compare > > https://github.com/kfrlib/kfr/blob/main/include/kfr/simd/impl/backend_clang. > hpp > > and > > https://github.com/kfrlib/kfr/blob/main/include/kfr/simd/impl/ > backend_generic.hpp Hmm, backend_clang.hpp does not use the .xyzw syntax (or anything that is not supported by GCC's normal vector, it only uses __builtin_shufflevector (since GCC 12) and __builtin_convertvector (since GCC 9) both which have been supported in GCC for a few releases already. So it could just use vector_size there instead. Something like: ``` template <typename TT, size_t NN> using simd = unwrap_bit<TT> __attribute__((vector_size(NN*sizeof(unwrap_bit<TT>)))); ``` And use the header for GCC >= 12.1.0
