[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

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |NEW
           Assignee|marxin at gcc dot gnu.org          |unassigned at gcc dot 
gnu.org

--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
The only missing pieces are 2c) and 3b). Which should leverage the new target
hook targetm_common.get_valid_option_values and provide list of possible
values.
I'm leaving that to ARM and aarch64 folks.