[Bug tree-optimization/92161] [10 Regression] ICE in vect_get_vec_def_for_stmt_copy, at tree-vect-stmts.c:1687

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92161

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so the SLP rollback gets in the way of our adjustment of the def-type
in vectorizable_reduction.  Hmm.

Testing patch.