[Bug libgomp/90593] OpenACC 'acc_async_sync' need not imply synchronizing after every intermediate step but rather just once, at the end

[tschwinge at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90593

Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-05-23
     Ever confirmed|0                           |1

--- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
I wonder how this would relate to r237070 "[OpenACC] Make reduction arguments
addressable", where we currently in the front ends explicitly look for 'async'
clauses being present.