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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/111156] [14 Regression] aarch64
 aarch64/sve/mask_struct_store_4.c failures
Date: Thu, 01 Feb 2024 10:15:34 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111156

Tamar Christina <tnfchris at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tnfchris at gcc dot gnu.org

--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Yeah, I know it started between g:4e27ba6e2dd85a5ad4751c35270dbd8f277302dd =
and
g:721f7e2c4e5eed645593258624dd91e6c39f3bd2 but the bisect is hard because s=
ome
of the commits produce an ICE instead.

The bisects lands at

commit a739bac402ea5a583e43dbd01c14ebaff317c885 (refs/bisect/bad)
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Aug 25 09:42:16 2023 +0200

    tree-optimization/111136 - STMT_VINFO_SLP_VECT_ONLY and stores

    vect_dissolve_slp_only_groups currently only expects loads, for stores
    we have to make sure to mark the dissolved "groups" strided.

            PR tree-optimization/111136
            * tree-vect-loop.cc (vect_dissolve_slp_only_groups): For
            stores force STMT_VINFO_STRIDED_P and also duplicate that
            to all elements.

but the previous commit seems to be an ICE? so I guess this one will have t=
o be
done the hard way.=