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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/102627] [11/12 Regression] wrong code with "-O1"
Date: Wed, 06 Oct 2021 10:32:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102627

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-10-06
   Target Milestone|---                         |11.3
          Component|tree-optimization           |rtl-optimization
           Priority|P3                          |P2
             Status|UNCONFIRMED                 |NEW
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |vmakarov at gcc dot gnu.org
            Summary|wrong code with "-O1"       |[11/12 Regression] wrong
                   |                            |code with "-O1"
     Ever confirmed|0                           |1

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r11-8008-g4bbd51afaa4a3c116fb538d912b35e126be80b41 (at least on
the #c1 testcase at -O1, I don't see any aliasing issue nor any other UB in=
 the
source there so e.g. -fno-strict-aliasing or -fwrapv isn't needed) so possi=
bly
a RA issue.=