[Bug tree-optimization/103559] Can't optimize away < 0 check on sqrt

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103559

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Oh it is because you are using the wrong test.
Try:
    if (isless (x, 0))
        __builtin_unreachable();

And yes there is a difference.