[Bug fortran/43829] Scalarization of reductions

["paul.richard.thomas at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43829

--- Comment #36 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> 2011-10-04 16:04:48 UTC ---
Dear Michael,

I agree - we need the most up to date version to be (re-)submitted.  I
will review it.

Cheers

Paul

On Tue, Oct 4, 2011 at 3:17 PM, matz at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org> wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43829
>
> Michael Matz <matz at gcc dot gnu.org> changed:
>
>      What  Â|Removed           |Added
> ----------------------------------------------------------------------------
> ÂAttachment #23268|0 Â Â Â Â Â Â Â Â Â Â Â Â Â |1
> Â Â Â Âis obsolete| Â Â Â Â Â Â Â Â Â Â Â Â Â Â|
>
> --- Comment #35 from Michael Matz <matz at gcc dot gnu.org> 2011-10-04 13:17:00 UTC ---
> Created attachment 25409
> Â--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25409
> Even more up-to-date patch
>
> This patch applies to r179469. ÂThe results on tonto, on a Bulldozer machine:
>
> imf ./tonto.r179469.bdver.avx  3m22.045s
> imf ./tonto.r179469.bdver.nosum 2m59.535s
>
> That's with libimf preloaded. ÂAnd then it's actually faster then with ICC
> (doesn't mean much, as on bulldozer we can use FMA4 and XOP). ÂNevertheless
> the speedup is now rougly 10%. ÂWe really should work towards including
> it for 4.7.
>
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