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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/92335] [11/12/13/14 Regression] sinking of
 loads happen too early which causes vectorization not to be done
Date: Wed, 02 Aug 2023 08:46:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D92335

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:399c8dd44ff44f4b496223c7cc980651c4d6f6a0

commit r14-2927-g399c8dd44ff44f4b496223c7cc980651c4d6f6a0
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Jul 27 15:34:12 2023 +0200

    tree-optimization/92335 - Improve sinking heuristics for vectorization

    The following delays sinking of loads within the same innermost
    loop when it was unconditional before.  That's a not uncommon
    issue preventing vectorization when masked loads are not available.

            PR tree-optimization/92335
            * tree-ssa-sink.cc (select_best_block): Before loop
            optimizations avoid sinking unconditional loads/stores
            in innermost loops to conditional executed places.

            * gcc.dg/tree-ssa/ssa-sink-10.c: Disable vectorizing.
            * gcc.dg/tree-ssa/predcom-9.c: Clone from ssa-sink-10.c,
            expect predictive commoning to happen instead of sinking.
            * gcc.dg/vect/pr65947-3.c: Ajdust.=