[Bug tree-optimization/82847] [8 regression] gcc.dg/vect/slp-perm-9.c fail
rsandifo at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Nov 22 10:00:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82847
--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #4)
> On Tue, 21 Nov 2017, rsandifo at gcc dot gnu.org wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82847
> >
> > rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
> >
> > What |Removed |Added
> > ----------------------------------------------------------------------------
> > CC| |rsandifo at gcc dot gnu.org
> >
> > --- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
> > Isn't the problem here that vect_perm_byte and vect_perm_short don't return
> > true for x86_64, even though the patterns seem to be there in sse.md?
>
> vect_perm_byte is only available with SSEn+
>
> The test only uses vect_perm_short though.
Sure, fixing only vect_perm_short would be enough for this PR. I just
meant that the same problem seems to apply to vect_perm_byte too.
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