[Bug middle-end/50384] Returning std::array is not optimal

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50384

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-01-28
          Component|other                       |middle-end
            Summary|Copying a char array        |Returning std::array is not
                   |                            |optimal
     Ever Confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-28 19:34:40 UTC ---
(In reply to comment #1)
> Don't know if it is the same problem, but gcc seems to have trouble optimizing
> with structs:

The issue with comment #1 is simple, f is not being marked as a tail call.
The issue with comment #2 is harder, the expanding of the function call is a
bit bogus so is the return.