https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89223
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
The chrec in question is {8, +, 0xfffffffffffffffffffffffffffffffe}_1 which
wraps. The dependence code basically assumes infinite precision integers
(which we don't have) and thus cannot really handle the case of wrapping IVs.
