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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/103641] [11 regression] Severe compile time
 regression in SLP vectorize step
Date: Mon, 07 Feb 2022 15:05:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103641

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |12.0
            Summary|[11/12 regression] Severe   |[11 regression] Severe
                   |compile time regression in  |compile time regression in
                   |SLP vectorize step          |SLP vectorize step
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot =
gnu.org
             Status|NEW                         |ASSIGNED

--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
Marking fixed for GCC 12 then (still 35% with SLP vectorization is on the h=
igh
end).  I'm not sure about backporting this particular change, I'll definite=
ly
wait more for that.

I suppose the slowness is still entirely within synth_mult?=