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Subject: [Bug tree-optimization/104543] [12 Regression] wrong code at -O3 on
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Date: Tue, 15 Feb 2022 12:22:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104543

--- Comment #6 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:d03a67dc69251dc86c0772a432380a6e9bcb8617

commit r12-7243-gd03a67dc69251dc86c0772a432380a6e9bcb8617
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Feb 15 12:27:14 2022 +0100

    tree-optimization/104543 - fix unroll-and-jam precondition

    We have to make sure that outer loop exits come after the inner
    loop since we otherwise will put it into the fused loop body.

    2022-02-15  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/104543
            * gimple-loop-jam.cc (unroll_jam_possible_p): Check outer loop
exits
            come after the inner loop.

            * gcc.dg/torture/pr104543.c: New testcase.=