[Bug tree-optimization/120035] Loops are not optimized when "unsigned i" is used

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120035

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
It works with

_Bool f(){
    _Bool retval = 0;
    for(unsigned int i=0; i< (1u << 30); ++i)
        retval = retval || g(i);
    return retval;
}

it also works when g() takes an [unsigned] long.  So a bit weird.