[Bug tree-optimization/78114] [7 regression] gfortran.dg/vect/fast-math-mgrid-resid.f FAILs

[ro at CeBiTec dot Uni-Bielefeld.DE]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78114

--- Comment #8 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #6 from amker at gcc dot gnu.org ---
> But for tests:
> FAIL: gfortran.dg/vect/fast-math-mgrid-resid.f   -O   scan-tree-dump-times pcom
> "Executing predictive commoning without unrolling" 1
> FAIL: gfortran.dg/vect/fast-math-mgrid-resid.f   -O   scan-tree-dump-times pcom
> "Predictive commoning failed: no suitable chains" 0
>
> they happened before 20161011.  I tried revision at:
> commit ab93a7014158ec67a0b34e2986742da8a55013f9
> Author: sje <sje@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date:   Wed Oct 5 18:42:10 2016 +0000
>
>     2016-10-05  Steve Ellcey  <sellcey@caviumnetworks.com>
>
>         * MAINTAINERS: Update email address after it got reverted.
>
>
>     git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240801
> 138bc75d-0d04-0410-961f-82ee72b054a4
>
> And it's not working either?

In my tests (Solaris on various x86 systems, both Intel and AMD), the
failure started consistently between 20161011 (r240990) and 20161013
(r241136).

        Rainer