https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67310
--- Comment #10 from jol_indien at yahoo dot fr --- this patch doesn't do the trick, it detects the VIA Nano CPU as a core2 one. I guess the problem is that processor is first set to PROCESSOR_GENERIC but the VIA Nano CPU check (ie CENTAUR vendor + has_ssse3) is inside the PROCESSOR_PENTIUMPRO switch case instead of default one. Furthermore, I think the patch is missing the 'has_longmode' check to get sure we have a x86_64 Nano / Eden x2/x4 CPU.