[Bug tree-optimization/91459] Tail-Call Optimization is not performed when return value is assumed.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91459

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Part of that might be because of:
  // predicted unlikely by early return (on trees) predictor.

That seems not true, the other side is more unlikely ...