[Bug tree-optimization/123315] [16 Regression] ICE during GIMPLE pass, Segmentation fault, at tree-vect-loop.cc:10694

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123315

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks like we fail to reset LOOP_VINFO_USING_DECREMENTING_IV_P.  Testing patch.