[Bug tree-optimization/98095] Optimize __builtin_unordered (...) || __builtin_is{less,greater}{,equal}

[joseph at codesourcery dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98095

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot 
com> ---
There's no __builtin_isequal because == and != don't raise exceptions for 
quiet NaNs anyway.  (The lack of __builtin_iseqsig is bug 77928.)