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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/106022] [12/13 Regression] Enable vectorizer generates
 extra load
Date: Mon, 27 Jun 2022 09:00:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106022

--- Comment #13 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 24 Jun 2022, hjl.tools at gmail dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106022
>=20
> --- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
> (In reply to Richard Biener from comment #11)
> > No, I think you would need to pattern match an actual store sequence,
> > for example by looking at
> >=20
> >  if (STMT_VINFO_GROUPED_ACCESS (stmt_info)
> >      && pow2p_hwi (DR_GROUP_STORE_COUNT (stmt_info)))
> >    /* cost a possibly merged store only once (but with larger mode?) */
> >    if (DR_GROUP_FIRST_ELEMENT (stmt_info) =3D=3D stmt_info)
> >      ...
>=20
> The information aren't available in add_stmt_cost.

They should be ...=