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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/101895] [11/12 Regression] SLP Vectorizer
 change pushes VEC_PERM_EXPR into bad location spoiling further optimization
 opportunities
Date: Fri, 13 Aug 2021 05:24:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101895

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I wonder if we should do something like in match.pd anyways (unrelated to t=
his
issue):

(simplify
 (vec_perm (any_binary:s (VEC_DUP/CONSTRUCTOR@0) @1)@2 @2 @3)
 (any_binary @0 (vec_perm @1 @1 @3)))=