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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/109722] ABSU<a> == 0 is not optimized to just
 a == 0
Date: Fri, 05 May 2023 05:23:20 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: missed-optimization, patch
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109722

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pinskia@gcc.gnu.org>:

https://gcc.gnu.org/g:6fe385eac6ff8ecddb6cbdff2c706b27b5137006

commit r14-488-g6fe385eac6ff8ecddb6cbdff2c706b27b5137006
Author: Andrew Pinski <apinski@marvell.com>
Date:   Thu May 4 23:37:51 2023 +0000

    MATCH: Add ABSU<a> =3D=3D 0 to a =3D=3D 0 simplification

    There is already an `ABS<a> =3D=3D 0` to `a =3D=3D 0` pattern,
    this just extends that to ABSU too.

    OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.

            PR tree-optimization/109722

    gcc/ChangeLog:

            * match.pd: Extend the `ABS<a> =3D=3D 0` pattern
            to cover `ABSU<a> =3D=3D 0` too.

    gcc/testsuite/ChangeLog:

            * gcc.dg/tree-ssa/abs-1.c: New test.=