[Bug middle-end/97617] missing aggressive loop optimization warning in C++

[jan.smets at nokia dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97617

--- Comment #3 from Jan Smets <jan.smets at nokia dot com> ---
Sorry, I was too quickly in my wording to "skip single_exit()", of course that
edge is still required.