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Subject: [Bug tree-optimization/105618] [11 Regression] Missed loop body
 simplification by -O3 (trunk v.s. 10.3)
Date: Fri, 22 Jul 2022 11:21:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105618

--- Comment #8 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:dba0883cbbd0ce7545041be96ae75db1d577affb

commit r11-10169-gdba0883cbbd0ce7545041be96ae75db1d577affb
Author: Richard Biener <rguenther@suse.de>
Date:   Tue May 17 09:45:02 2022 +0200

    tree-optimization/105618 - restore load sinking

    The PR97330 fix caused some missed sinking of loads out of loops
    the following patch re-instantiates.

    2022-05-17  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/105618
            * tree-ssa-sink.c (statement_sink_location): For virtual
            PHI uses ignore those defining the used virtual operand.

            * gcc.dg/tree-ssa/ssa-sink-19.c: New testcase.

    (cherry picked from commit ebce0e9bd8d714a8607ae24331a3d842b0d11859)=