[Bug tree-optimization/121755] ice in lower_bound, at value-range.h:619 with -ffinite-math-only but Nan in src

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121755

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
double f(double a) {
  double b = __builtin_nan("");
  b = a < b ? a : b;
  return b;
}
```