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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/110637] (type)(zeroonep !=/== 0) should be
 optimized as (type)zeroonep/zeroonep^1 earlier than vrp
Date: Wed, 12 Jul 2023 08:06:15 +0000
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X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: missed-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110637

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Maybe zero_one_valued_p needs a

(match zero_one_valued_p
 (bit_and @0 integer_onep))

?  (hopefully for signed 1-bit precision that doesn't match)=