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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/52252] An opportunity for x86 gcc vectorizer
 (gain up to 3 times)
Date: Tue, 28 Nov 2023 06:06:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D52252

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu.org

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note there is also a missing scalar optimization here also (which will impr=
ove
the vectorized version in the end too).

Right now we have the following match pattern:
/* MIN (~X, ~Y) -> ~MAX (X, Y)
   MAX (~X, ~Y) -> ~MIN (X, Y)  */
(for minmax (min max)
 maxmin (max min)
 (simplify
  (minmax (bit_not:s@2 @0) (bit_not:s@3 @1))
  (bit_not (maxmin @0 @1)))


But that does not match here due to the :s. I am not 100% sure but trading 2
possible bit_not for adding another might end up improving things ...=