[Bug middle-end/83169] Optimizer doesn't correctly handle NRVO if -fno-inline-small-functions or function uninlinable

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83169

--- Comment #4 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Jakub Jelinek from comment #3)
> NRVO in the middle-end is solely an optimization.  If some FE requires
> something above that, then it needs to do it itself, C++ is an example of a
> FE that does it.

If that's the case, then why the different runtime behaviours?

The generated code sets the address of the constructed variable the same the as
the return address, yet the condition is assumed false by the optimizer.