On Thu, Feb 21, 2019 at 10:40:09AM -0800, H.J. Lu wrote:
> > Prune joined switches with Negative and RejectNegative to allow
> > -march=skylake-avx512 to override previous -march=native on command-line.
> >
> > gcc/
> >
> >         PR driver/69471
> >         * opts-common.c (prune_options): Also prune joined switches
> >         with Negative and RejectNegative.
> >         * config/i386/i386.opt (march=): Add Negative(march=).
> >         (mtune=): Add Negative(mtune=).
> >         * doc/options.texi: Document Negative used together with Joined
> >         and RejectNegative.
> >
> > gcc/testsuite/
> >
> >         PR driver/69471
> >         * gcc.dg/pr69471-1.c: New test.
> >         * gcc.dg/pr69471-2.c: Likewise.
> >         * gcc.target/i386/pr69471-3.c: Likewise.
> 
> PING:
> 
> https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01071.html

The latest version looks good to me, so if Joseph won't object in next 48
hours, it is ok for trunk.  I guess we want to ask maintainers of other
backends who support -m*=native to decide what they want afterwards.

        Jakub

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