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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/102494] Failure to optimize out vector
 reduction properly especially when using OpenMP
Date: Mon, 27 Sep 2021 01:45:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102494

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-*
           Keywords|                            |missed-optimization

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Both with and without -fopenmp-simd works on aarch64-linux-gnu which has a
reduction addition.

Just looks like how reduction addition is handled for x86_64 really.

Also we have:
  MEM <vector(4) short int> [(short int *)&D.2916] =3D vect__21.35_111;
  MEM <vector(4) short int> [(short int *)&D.2916 + 8B] =3D vect__21.35_112;
  vect__24.24_88 =3D MEM <vector(8) short int> [(short int *)&D.2916];=