[Bug tree-optimization/63537] [4.8/4.9/5 Regression] Missed optimization: Loop unrolling adds extra copy when returning aggregate

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63537

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.9.2                       |4.8.4
            Summary|[4.9/5 Regression] Missed   |[4.8/4.9/5 Regression]
                   |optimization: Loop          |Missed optimization: Loop
                   |unrolling adds extra copy   |unrolling adds extra copy
                   |when returning aggregate    |when returning aggregate
      Known to fail|                            |4.8.3, 4.9.1, 5.0