https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111768
--- Comment #6 from Arsen Arsenović <arsen at gcc dot gnu.org> --- this poses another problem too, though: should big and little cores ever differ in ISA support levels, building on big cores (which seems like a reasonable thing to do) with -march=native could lead to generating code incompatible with little cores. perhaps it'd be reasonable to always probe all cores (is that possible?) and pick a common subset?
