[Bug middle-end/78399] g++ generates sub-optimal assembler code when structs aren't explicitly aligned.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78399

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-11-18
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  We're also expanding from

pod copy_pod(pod) (struct pod d)
{
  struct pod D.2314;

;;   basic block 2, loop depth 0
;;    pred:       ENTRY
  D.2314 = d;
  return D.2314;
;;    succ:       EXIT

}

which has one useless aggregate copy (somewhere we have a bug about not having
aggregate copy propagation).  The C++ FE emits

<<cleanup_point return <retval> = TARGET_EXPR <D.2303, d>>>;