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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/112572] [14 regression] LLVM miscompiled since
 r14-5355-g3cd3a09b3f91a1
Date: Sat, 18 Nov 2023 21:55:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112572

--- Comment #20 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #18)
> compare-elim.cc depends on up to date REG_UNUSED and between before
> vzeroupper and cmpelim the note gets out of date.

Note it depends on it indirectly via single_set in fact any pass that uses
single_set will depends on the REG_UNUSED notes to be up to date.=