https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103421
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- I think that makes sense in some way, not sure we want -march-for-check=bogus12323123423452345. Also consider -march=xyz -moption-not-valid-for-xyz -march=but-for-this
