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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111431] a & (a == 0) is not optimized to 0
Date: Sat, 16 Sep 2023 03:27:06 +0000
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X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: missed-optimization, xfail
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111431

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note this is an extension of the pattern:
/* X & !X -> 0.  */
(simplify
 (bit_and:c @0 (logical_inverted_value @0))

Which was moved to match via r5-4683-g5609420fbab5ca .=