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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/98544] [11 regression] Wrong code generated
 by tree vectorizer since r11-3917-g28290cb50c7dbf87
Date: Thu, 07 Jan 2021 14:26:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98544

--- Comment #6 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> (In reply to Martin Li=C5=A1ka from comment #3)
> > For g++ bug2.cc  -std=3Dc++17 -O1 -mavx -ftree-loop-vectorize, it start=
ed with
> > r11-3917-g28290cb50c7dbf87.
>=20
> Are you sure about this bisection?

Yes, it's correct. I've just verified that.

>  Reverting this doesn't fix the issue
> (reversion isn't quite easy since split_constant_offset has undergone qui=
te
> some refactoring meanwhile).

I'm gonna bisect until when the reversion worked on the trunk.=