[Bug c++/119699] fnspec for constructors/deconstructors don't say they return this when targetm.cxx.cdtor_returns_this () returns true

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119699

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> Yes because REG_RETURNED does not work always. I will file a new bug for
> that.

PR 120214 .

As for tail call, that is a different issue; I have not fully looked into yet.
Cannot tail-call: call and return value are different: x::x (_2(D));

The call flags are definitely set but I will need to debug what is going wrong.