On Sat, Feb 08, 2020 at 11:32:40AM +0100, Uros Bizjak wrote:
> On Sat, Feb 8, 2020 at 11:05 AM Jakub Jelinek <ja...@redhat.com> wrote:
> >
> > On Sat, Feb 08, 2020 at 08:24:38AM +0000, JonY wrote:
> > > It does not, I just checked with the master branch of binutils.
> > ...
> > > I did a -c test build with an older toolchain, it fails to compile
> > > (invalid register for .seh_savexmm) while the latest gcc is passing,
> > > both are using the same binutils version.
> > >
> > > I guess that covers it?
> >
> > I went ahead and committed the patch (with the double config/i386/ in it
> > fixed obviously).
>
> I think that the patch should also be backported to gcc-9 branch. The
> change is backward compatible, since the new code will save and
> restore zmm16+ registers at the caller site, and the old code (e.g.
> existing libraries) will then unnecessarily save and restore regs in
> the callee.
Agreed, will do together with other backports soon.
Jakub
