[Bug c/107785] Integer comparison result compile with -O3

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107785

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I suspect you have a signed integer overflow in this code. And in c/c++, signed
integer overflow is undefined behavior.