https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101995
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12/13/14/15 Regression] |[12/13/14 Regression]
|regression built-in memset |regression built-in memset
|missed-optimization arm -Os |missed-optimization arm -Os
|since r9-3594 |since r9-3594
--- Comment #17 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Richard Earnshaw from comment #16)
> Still present.
I just tried on the today's trunk on arm and get the REG_RETURNED as needed.
This is because late_combine (don't complain about the name) removes the extra
move that was added.
>
> Perhaps more significantly (and possibly related)
This is a different issue where the C++ front-end does not add a fnspec for the
constructor (and deconstructor) with `targetm.cxx.cdtor_returns_this ()`
returning true. I will file this a sperate issue.
