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Date:      Sat, 31 Oct 2020 16:02:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 250755] 12.2-RELEASE i386 GENERIC kernel fails to load
Message-ID:  <bug-250755-227-XZEWbnJoPj@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-250755-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-250755-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250755

Konstantin Belousov <kib@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dim@FreeBSD.org,
                   |                            |emaste@freebsd.org,
                   |                            |gjb@FreeBSD.org,
                   |                            |kib@FreeBSD.org

--- Comment #2 from Konstantin Belousov <kib@FreeBSD.org> ---
It seems that 12.2 compiler on i386 targets 686 by default.  Your faulting
instruction is cmovne.

We proclaimed that 13.0 will switch to 686 by default, but it seems that the
change
leaked into 12.2, perhaps with clang 10.0.1 import.  I just verified that cc
from
12.2-RELEASE/i386 does generate cmov* instructions with default -march.

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