[Bug driver/83193] Help for invalid -march= options from cc1 omits -march=native on x86-64, arm. aarch64, output also inconsistent

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83193

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43468
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43468&action=edit
2c) patch candidate