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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/105586] [11/12/13 Regression] -fcompare-debug failure
 (length) with -O2 -fno-if-conversion -mtune=power4
 -fno-guess-branch-probability
Date: Fri, 13 May 2022 09:31:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105586

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |linkw at gcc dot gnu.org,
                   |                            |segher at gcc dot gnu.org
   Last reconfirmed|                            |2022-05-13

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The differences start during sched1 pass.
Could be the backend (rs6000_sched*, rs6000_variable_issue*) or the schedul=
er.=