[Bug ipa/97640] GCC doesn't optimize-out outside-affecting lambdas within y-combinator while clang does.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97640

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |ipa
             Status|ASSIGNED                    |NEW
           Assignee|pinskia at gcc dot gnu.org         |unassigned at gcc dot 
gnu.org

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> Confirmed. We get close at -O3 (even at -O2 we are close).
> 
> GCC even gets the tail call at -O2 which LLVM does not.

Note at -O3 and s/main/f/ GCC does optimize it down to a constant. So maybe
there is just heurstics of the inliner let.