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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/114787] [13/14 Regression] wrong code at -O1
 on x86_64-linux-gnu (the generated code hangs)
Date: Sat, 20 Apr 2024 23:10:17 +0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: needs-bisection, wrong-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114787

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |needs-bisection
      Known to work|                            |12.1.0
   Target Milestone|14.0                        |13.3
      Known to fail|                            |13.1.0
            Summary|[14 Regression] wrong code  |[13/14 Regression] wrong
                   |at -O1 on x86_64-linux-gnu  |code at -O1 on
                   |(the generated code hangs)  |x86_64-linux-gnu (the
                   |                            |generated code hangs)

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So with GCC 13, with `-fdump-tree-all-all`, we get the same wrong code as on
the trunk.

This is why I was I misunderstood thinking it was a target issue as I was
comparing the dumps between GCC 13 and the trunk with -all enabled but it w=
as
broken in GCC 13 too.

Anyways I tested GCC 12.3.0 and it looks to be working there.

It would be useful to get another bisect done this time with `-O1
-fdump-tree-all-all` .=