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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/99905] [8/9/10/11 Regression] wrong code with -mno-mmx
 -mno-sse since r7-4540-gb229ab2a712ccd44
Date: Tue, 06 Apr 2021 17:25:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99905

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jakub at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gn=
u.org

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It indeed goes wrong during combine.  All the __builtin_bswap (i >> 63) + .=
..
stuff is gone.  Will have a look.=