[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 #16 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Aug 27 08:01:14 2018
New Revision: 263870

URL: https://gcc.gnu.org/viewcvs?rev=263870&root=gcc&view=rev
Log:
Print default options selection for -march,-mcpu and -mtune for aarch64 (PR
driver/83193).

2018-08-27  Martin Liska  <mli...@suse.cz>

        PR driver/83193
        * config/aarch64/aarch64.c (aarch64_override_options_internal):
        Set default values for x_aarch64_*_string strings.
        * config/aarch64/aarch64.opt: Remove --{march,mcpu,mtune}==
        prefix.  For -mabi do not print '=ABI' in help and use
        <option_value> format for -msve-vector-bits and -moverride
        options.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64.c
    trunk/gcc/config/aarch64/aarch64.opt