https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71918
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Markus Trippelsdorf from comment #11) > The issue can be fixed by a microcode/bios update. > So it is clearly an Intel bug and I don't think anything should change for > gcc. The wrong cpuid reporting sure. What I meant was that there are still CPUs that claim to be Haswell or Skylake, yet they don't support the ISAs GCC includes under the corresponding -march= option. Looking in detail on the Skylake based Pentium or Celeron, they don't even have AVX, so clearly users just must not consider them anything more than a mere westmere or something similar.
