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re PR libgomp/92028 (OpenACC 'host_data' execution test regressions with nvptx offloading)

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PR libgomp/92028
	* target.c (gomp_map_vars_internal): Readd the previous
	GOMP_MAP_USE_DEVICE_PTR handling code in the first loop,
	though do that just in the !not_found_cnt case.

From-SVN: r276753
This commit is contained in:
Jakub Jelinek 2019-10-09 09:33:02 +02:00 committed by Jakub Jelinek
parent f78347996e
commit 7d48e14fc6
2 changed files with 31 additions and 0 deletions
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7
libgomp/ChangeLog
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@ -1,3 +1,10 @@
2019-10-09 Jakub Jelinek <jakub@redhat.com>
PR libgomp/92028
* target.c (gomp_map_vars_internal): Readd the previous
GOMP_MAP_USE_DEVICE_PTR handling code in the first loop,
though do that just in the !not_found_cnt case.
2019-10-08 Tobias Burnus <tobias@codesourcery.com>
* gfortran.dg/gomp/target-simd.f90: New.

24
libgomp/target.c
View File

@ -593,6 +593,30 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
tgt->list[i].key = NULL;
if (!not_found_cnt)
{
/* In OpenMP < 5.0 and OpenACC the mapping has to be done
on a separate construct prior to using use_device_{addr,ptr}.
In OpenMP 5.0, map directives need to be ordered by the
middle-end before the use_device_* clauses. If
!not_found_cnt, all mappings requested (if any) are already
mapped, so use_device_{addr,ptr} can be resolved right away.
Otherwise, if not_found_cnt, gomp_map_lookup might fail
now but would succeed after performing the mappings in the
following loop. We can't defer this always to the second
loop, because it is not even invoked when !not_found_cnt
after the first loop. */
cur_node.host_start = (uintptr_t) hostaddrs[i];
cur_node.host_end = cur_node.host_start;
splay_tree_key n = gomp_map_lookup (mem_map, &cur_node);
if (n == NULL)
{
gomp_mutex_unlock (&devicep->lock);
gomp_fatal ("use_device_ptr pointer wasn't mapped");
}
cur_node.host_start -= n->host_start;
hostaddrs[i]
= (void *) (n->tgt->tgt_start + n->tgt_offset
+ cur_node.host_start);
tgt->list[i].offset = ~(uintptr_t) 0;
}
else
tgt->list[i].offset = 0;