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Subject: [Bug tree-optimization/101445] [11/12 Regression] wrong code at -O3
 on x86_64-linux-gnu
Date: Wed, 14 Jul 2021 11:09:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101445

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:1eee5fa556432fb6eab3a479c95609c5f3791ccb

commit r11-8736-g1eee5fa556432fb6eab3a479c95609c5f3791ccb
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Jul 14 11:06:58 2021 +0200

    tree-optimization/101445 - fix negative stride SLP vect with gaps

    The following fixes the IV adjustment for the gap in a negative
    stride SLP vectorization.  The adjustment was in the wrong direction,
    now fixes as in the patch.

    2021-07-14  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/101445
            * tree-vect-stmts.c (vectorizable_load): Do the gap adjustment
            of the IV in the correct direction for negative stride
            accesses.

            * gcc.dg/vect/pr101445.c: New testcase.

    (cherry picked from commit a967a3efd39280fe3f5774e45490e991f8e99059)=