[Bug tree-optimization/67800] [6 Regression] Missed vectorization opportunity on x86 (DOT_PROD_EXPR in non-reduction)

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67800

--- Comment #6 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 1 Dec 2015, afomin.mailbox at gmail dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67800
> 
> --- Comment #5 from Alexander Fomin <afomin.mailbox at gmail dot com> ---
> Richard, are there any updates on this?
> 
> If BB vectorization support for reductions does not fit your plans for stage3,
> we'd like to fix the regression by doing a partial revert described above.

I will fix this PR in stage3 by either improving vectoirzation here
or partially reverting the commit.  Stay tuned.