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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/102622] [9/10 Regression] Wrong code with -O1
 and above due to phiopt and signed one bit integer types
Date: Sun, 10 Oct 2021 09:06:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102622

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|https://gcc.gnu.org/piperma |
                   |il/gcc-patches/2021-October |
                   |/581251.html                |
            Summary|[9/10/12 Regression] Wrong  |[9/10 Regression] Wrong
                   |code with -O1 and above due |code with -O1 and above due
                   |to phiopt and signed one    |to phiopt and signed one
                   |bit integer types           |bit integer types
           Keywords|patch                       |
      Known to work|                            |12.0

--- Comment #21 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed on the trunk.  I will come up with a patch for GCC 9 and 10 branches =
in
the next few days since it won't be even close to a backport of this patch.=