[Bug middle-end/92929] OpenACC/OpenMP 'target' 'exit data'/'update' optimizations

[tschwinge at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92929

--- Comment #2 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to myself from comment #1)
>       if (OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_FIRSTPRIVATE_POINTER
>           || (OMP_CLAUSE_MAP_KIND (c)
>               == GOMP_MAP_FIRSTPRIVATE_REFERENCE))
>         /* For target {,enter ,exit }data only the array slice is
>            mapped, but not the pointer to it.  */
>         remove = true;

> Why is this not applicable for OpenACC '!$acc update'/OpenMP '!$omp target
> update', too?  (This is now also relevant for C/C++.)

I see I asked the same question before, and in
<http://mid.mail-archive.com/574F1C6C.5020704@codesourcery.com> Cesar answered:
"I suppose they can be added here, but lower_omp_target already ignores
GOMP_MAP_FIRSTPRIVATE_POINTER for non-offloaded and data_region regions."