[Bug rtl-optimization/102986] [12 Regression] ICE: in expand_shift_1, at expmed.c:2671 with a negative shift of a vector

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102986

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or tree-vect-generic.c would need to check the predicates of the vector shift
and try to figure out if they accept REGs or not.  But no idea how to do that
cleanly, the predicate could be very well some target specific predicate...