https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122474
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> _118 = .VEC_SHL_INSERT ({ -1, ... }, _117);
<signed-boolean:1> _117;
vector([4,4]) <signed-boolean:1> _118;
Looks it is boolean vectorization patches related ...
