[Bug tree-optimization/101895] [11/12 Regression] SLP Vectorizer change pushes VEC_PERM_EXPR into bad location spoiling further optimization opportunities

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101895

--- 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 this
issue):

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