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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/111282] `a & (b ^ ~a)` (or `a & ~(a ^ b)`)
 not optimized to `a & b` in gimple
Date: Mon, 04 Sep 2023 07:26:07 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: enhancement
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111282

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note `|` case already handled by r8-4395:
/* a | ~(a ^ b)  -->  a | ~b  */
(simplify
 (bit_ior:c @0 (bit_not:s (bit_xor:c @0 @1)))
 (bit_ior @0 (bit_not @1)))=