[Bug tree-optimization/107569] [13 Regression] Failure to optimize std::isfinite since r13-3596

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107569

--- Comment #49 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Does the has_zero_uses patch work for this?  As there is both:
  _4 = _6 u> 1.79769313486231570814527423731704356798070567525844996599e+308;
  _8 = ~_4;
and _8 has_zero_uses while _4 has uses but all are dead.  So, I assume we
wouldn't try
to reuse _8 but perhaps we'd reuse _4?