[Bug middle-end/114140] quadmath fminq/fmaxq with signaling_NaN not work

["pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114140

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libquadmath                 |middle-end

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This has nothing to do quadmath But rather the builtins and constant folding.
As shown by:


```
_Float128 f1()
{

        using T = _Float128;
        //using L = std::numeric_limits<T>;
        const T
            a = __builtin_huge_valf128(),
            b = __builtin_nanf128(""),
            c = __builtin_nansf128("");
  return __builtin_fminf128(a, b);
}
_Float128 f2()
{

       //using T = std::float128_t;
        using T = _Float128;
     //   using L = std::numeric_limits<T>;
        const T
            a = __builtin_huge_valf128(),
            b = __builtin_nanf128(""),
            c = __builtin_nansf128("");
  return __builtin_fmaxf128(a, b);
}
_Float128 f3()
{
       //using T = std::float128_t;
        using T = _Float128;
      //  using L = std::numeric_limits<T>;
        const T
            a = __builtin_huge_valf128(),
            b = __builtin_nanf128(""),
            c = __builtin_nansf128("");
  return __builtin_fminf128(a, c);
}
_Float128 f4()
{

       //using T = std::float128_t;
        using T = _Float128;
     //   using L = std::numeric_limits<T>;
        const T
            a = __builtin_huge_valf128(),
            b = __builtin_nanf128(""),
            c = __builtin_nansf128("");
  return __builtin_fmaxf128(a, c);
}
```