[Bug middle-end/80775] [8 Regression] -O3 produces ice in group_case_labels_stmt

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80775

--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
I have it recreated.  Digging into it.