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* [gcc r11-2020] openacc: Adjust dynamic reference count semantics
@ 2020-07-10 15:09 Julian Brown
0 siblings, 0 replies; only message in thread
From: Julian Brown @ 2020-07-10 15:09 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:6f5b4b64d25a36f085ab90efc3d54c025a7fff49
commit r11-2020-g6f5b4b64d25a36f085ab90efc3d54c025a7fff49
Author: Julian Brown <julian@codesourcery.com>
Date: Fri May 22 04:06:10 2020 -0700
openacc: Adjust dynamic reference count semantics
This patch adjusts how dynamic reference counts work so that they match
the semantics of the source program more closely, instead of representing
"excess" reference counts beyond those that represent pointers in the
internal libgomp splay-tree data structure. This allows some corner
cases to be handled more gracefully.
2020-07-10 Julian Brown <julian@codesourcery.com>
Thomas Schwinge <thomas@codesourcery.com>
libgomp/
* libgomp.h (struct splay_tree_key_s): Change virtual_refcount to
dynamic_refcount.
(struct gomp_device_descr): Remove GOMP_MAP_VARS_OPENACC_ENTER_DATA.
* oacc-mem.c (acc_map_data): Substitute virtual_refcount for
dynamic_refcount.
(acc_unmap_data): Update comment.
(goacc_map_var_existing, goacc_enter_datum): Adjust for
dynamic_refcount semantics.
(goacc_exit_datum_1, goacc_exit_datum): Re-add some error checking.
Adjust for dynamic_refcount semantics.
(goacc_enter_data_internal): Implement "present" case of dynamic
memory-map handling here. Update "non-present" case for
dynamic_refcount semantics.
(goacc_exit_data_internal): Use goacc_exit_datum_1.
* target.c (gomp_map_vars_internal): Remove
GOMP_MAP_VARS_OPENACC_ENTER_DATA handling. Update for dynamic_refcount
handling.
(gomp_unmap_vars_internal): Remove virtual_refcount handling.
(gomp_load_image_to_device): Substitute dynamic_refcount for
virtual_refcount.
* testsuite/libgomp.oacc-c-c++-common/pr92843-1.c: Remove XFAILs.
* testsuite/libgomp.oacc-c-c++-common/refcounting-1.c: New test.
* testsuite/libgomp.oacc-c-c++-common/refcounting-2.c: New test.
* testsuite/libgomp.oacc-c-c++-common/struct-3-1-1.c: New test.
* testsuite/libgomp.oacc-fortran/deep-copy-6.f90: Remove XFAILs and
trace output.
* testsuite/libgomp.oacc-fortran/deep-copy-6-no_finalize.F90: Remove
trace output.
* testsuite/libgomp.oacc-fortran/dynamic-incr-structural-1.f90: New
test.
* testsuite/libgomp.oacc-c-c++-common/structured-dynamic-lifetimes-4.c:
Remove stale comment.
* testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-1.f90: Remove XFAILs.
* testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-2.F90: Likewise.
* testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-1.f90: Likewise.
* testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-2.f90: Likewise.
* testsuite/libgomp.oacc-fortran/mdc-refcount-1-3-1.f90: Likewise.
* testsuite/libgomp.oacc-fortran/mdc-refcount-1-4-1.f90: Adjust XFAIL.
Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>
Diff:
---
libgomp/libgomp.h | 8 +-
libgomp/oacc-mem.c | 236 ++++++++++++++-------
libgomp/target.c | 38 +---
.../libgomp.oacc-c-c++-common/pr92843-1.c | 9 -
.../libgomp.oacc-c-c++-common/refcounting-1.c | 31 +++
.../libgomp.oacc-c-c++-common/refcounting-2.c | 31 +++
.../libgomp.oacc-c-c++-common/struct-3-1-1.c | 34 +++
.../structured-dynamic-lifetimes-4.c | 2 -
.../deep-copy-6-no_finalize.F90 | 5 +-
.../testsuite/libgomp.oacc-fortran/deep-copy-6.f90 | 8 -
.../dynamic-incr-structural-1.f90 | 49 +++++
.../libgomp.oacc-fortran/mdc-refcount-1-1-1.f90 | 8 -
.../libgomp.oacc-fortran/mdc-refcount-1-1-2.F90 | 5 +-
.../libgomp.oacc-fortran/mdc-refcount-1-2-1.f90 | 8 -
.../libgomp.oacc-fortran/mdc-refcount-1-2-2.f90 | 8 -
.../libgomp.oacc-fortran/mdc-refcount-1-3-1.f90 | 8 -
.../libgomp.oacc-fortran/mdc-refcount-1-4-1.f90 | 7 +-
17 files changed, 316 insertions(+), 179 deletions(-)
diff --git a/libgomp/libgomp.h b/libgomp/libgomp.h
index ca42e0de640..7b52ce7d5c2 100644
--- a/libgomp/libgomp.h
+++ b/libgomp/libgomp.h
@@ -1016,11 +1016,8 @@ struct splay_tree_key_s {
uintptr_t tgt_offset;
/* Reference count. */
uintptr_t refcount;
- /* Reference counts beyond those that represent genuine references in the
- linked splay tree key/target memory structures, e.g. for multiple OpenACC
- "present increment" operations (via "acc enter data") referring to the same
- host-memory block. */
- uintptr_t virtual_refcount;
+ /* Dynamic reference count. */
+ uintptr_t dynamic_refcount;
struct splay_tree_aux *aux;
};
@@ -1153,7 +1150,6 @@ struct gomp_device_descr
enum gomp_map_vars_kind
{
GOMP_MAP_VARS_OPENACC,
- GOMP_MAP_VARS_OPENACC_ENTER_DATA,
GOMP_MAP_VARS_TARGET,
GOMP_MAP_VARS_DATA,
GOMP_MAP_VARS_ENTER_DATA
diff --git a/libgomp/oacc-mem.c b/libgomp/oacc-mem.c
index 34f519a2045..855cad84391 100644
--- a/libgomp/oacc-mem.c
+++ b/libgomp/oacc-mem.c
@@ -409,7 +409,7 @@ acc_map_data (void *h, void *d, size_t s)
splay_tree_key n = tgt->list[0].key;
assert (n);
assert (n->refcount == 1);
- assert (n->virtual_refcount == 0);
+ assert (n->dynamic_refcount == 0);
/* Special reference counting behavior. */
n->refcount = REFCOUNT_INFINITY;
@@ -456,7 +456,7 @@ acc_unmap_data (void *h)
(void *) n->host_start, (int) host_size, (void *) h);
}
/* TODO This currently doesn't catch 'REFCOUNT_INFINITY' usage different from
- 'acc_map_data'. Maybe 'virtual_refcount' can be used for disambiguating
+ 'acc_map_data'. Maybe 'dynamic_refcount' can be used for disambiguating
the different 'REFCOUNT_INFINITY' cases, or simply separate
'REFCOUNT_INFINITY' values per different usage ('REFCOUNT_ACC_MAP_DATA'
etc.)? */
@@ -520,10 +520,8 @@ goacc_map_var_existing (struct gomp_device_descr *acc_dev, void *hostaddr,
assert (n->refcount != REFCOUNT_LINK);
if (n->refcount != REFCOUNT_INFINITY)
- {
- n->refcount++;
- n->virtual_refcount++;
- }
+ n->refcount++;
+ n->dynamic_refcount++;
return d;
}
@@ -574,13 +572,14 @@ goacc_enter_datum (void **hostaddrs, size_t *sizes, void *kinds, int async)
struct target_mem_desc *tgt
= gomp_map_vars_async (acc_dev, aq, mapnum, hostaddrs, NULL, sizes,
- kinds, true, GOMP_MAP_VARS_OPENACC_ENTER_DATA);
+ kinds, true, GOMP_MAP_VARS_ENTER_DATA);
assert (tgt);
assert (tgt->list_count == 1);
n = tgt->list[0].key;
assert (n);
assert (n->refcount == 1);
- assert (n->virtual_refcount == 0);
+ assert (n->dynamic_refcount == 0);
+ n->dynamic_refcount++;
d = (void *) tgt->tgt_start;
}
@@ -676,24 +675,30 @@ goacc_exit_datum_1 (struct gomp_device_descr *acc_dev, void *h, size_t s,
(void *) h, (int) s, (void *) n->host_start, (int) host_size);
}
- bool finalize = (kind == GOMP_MAP_DELETE
- || kind == GOMP_MAP_FORCE_FROM);
+ bool finalize = (kind == GOMP_MAP_FORCE_FROM
+ || kind == GOMP_MAP_DELETE
+ || kind == GOMP_MAP_FORCE_DETACH);
+
+ assert (n->refcount != REFCOUNT_LINK);
+ if (n->refcount != REFCOUNT_INFINITY
+ && n->refcount < n->dynamic_refcount)
+ {
+ gomp_mutex_unlock (&acc_dev->lock);
+ gomp_fatal ("Dynamic reference counting assert fail\n");
+ }
if (finalize)
{
if (n->refcount != REFCOUNT_INFINITY)
- n->refcount -= n->virtual_refcount;
- n->virtual_refcount = 0;
+ n->refcount -= n->dynamic_refcount;
+ n->dynamic_refcount = 0;
}
-
- if (n->virtual_refcount > 0)
+ else if (n->dynamic_refcount)
{
if (n->refcount != REFCOUNT_INFINITY)
n->refcount--;
- n->virtual_refcount--;
+ n->dynamic_refcount--;
}
- else if (n->refcount > 0 && n->refcount != REFCOUNT_INFINITY)
- n->refcount--;
if (n->refcount == 0)
{
@@ -1068,18 +1073,144 @@ goacc_enter_data_internal (struct gomp_device_descr *acc_dev, size_t mapnum,
void **hostaddrs, size_t *sizes,
unsigned short *kinds, goacc_aq aq)
{
+ gomp_mutex_lock (&acc_dev->lock);
+
for (size_t i = 0; i < mapnum; i++)
{
- int group_last = find_group_last (i, mapnum, sizes, kinds);
+ splay_tree_key n;
+ size_t group_last = find_group_last (i, mapnum, sizes, kinds);
+ bool struct_p = false;
+ size_t size, groupnum = (group_last - i) + 1;
+
+ switch (kinds[i] & 0xff)
+ {
+ case GOMP_MAP_STRUCT:
+ {
+ size = (uintptr_t) hostaddrs[group_last] + sizes[group_last]
+ - (uintptr_t) hostaddrs[i];
+ struct_p = true;
+ }
+ break;
+
+ case GOMP_MAP_ATTACH:
+ size = sizeof (void *);
+ break;
+
+ default:
+ size = sizes[i];
+ }
- gomp_map_vars_async (acc_dev, aq,
- (group_last - i) + 1,
- &hostaddrs[i], NULL,
- &sizes[i], &kinds[i], true,
- GOMP_MAP_VARS_OPENACC_ENTER_DATA);
+ n = lookup_host (acc_dev, hostaddrs[i], size);
+
+ if (n && struct_p)
+ {
+ for (size_t j = i + 1; j <= group_last; j++)
+ {
+ struct splay_tree_key_s cur_node;
+ cur_node.host_start = (uintptr_t) hostaddrs[j];
+ cur_node.host_end = cur_node.host_start + sizes[j];
+ splay_tree_key n2
+ = splay_tree_lookup (&acc_dev->mem_map, &cur_node);
+ if (!n2
+ || n2->tgt != n->tgt
+ || n2->host_start - n->host_start
+ != n2->tgt_offset - n->tgt_offset)
+ {
+ gomp_mutex_unlock (&acc_dev->lock);
+ gomp_fatal ("Trying to map into device [%p..%p) structure "
+ "element when other mapped elements from the "
+ "same structure weren't mapped together with "
+ "it", (void *) cur_node.host_start,
+ (void *) cur_node.host_end);
+ }
+ }
+ /* This is a special case because we must increment the refcount by
+ the number of mapped struct elements, rather than by one. */
+ if (n->refcount != REFCOUNT_INFINITY)
+ n->refcount += groupnum - 1;
+ n->dynamic_refcount += groupnum - 1;
+ }
+ else if (n && groupnum == 1)
+ {
+ void *h = hostaddrs[i];
+ size_t s = sizes[i];
+
+ /* A standalone attach clause. */
+ if ((kinds[i] & 0xff) == GOMP_MAP_ATTACH)
+ gomp_attach_pointer (acc_dev, aq, &acc_dev->mem_map, n,
+ (uintptr_t) h, s, NULL);
+
+ goacc_map_var_existing (acc_dev, h, s, n);
+ }
+ else if (n && groupnum > 1)
+ {
+ assert (n->refcount != REFCOUNT_INFINITY
+ && n->refcount != REFCOUNT_LINK);
+
+ for (size_t j = i + 1; j <= group_last; j++)
+ if ((kinds[j] & 0xff) == GOMP_MAP_ATTACH)
+ {
+ splay_tree_key m
+ = lookup_host (acc_dev, hostaddrs[j], sizeof (void *));
+ gomp_attach_pointer (acc_dev, aq, &acc_dev->mem_map, m,
+ (uintptr_t) hostaddrs[j], sizes[j], NULL);
+ }
+
+ bool processed = false;
+
+ struct target_mem_desc *tgt = n->tgt;
+ for (size_t j = 0; j < tgt->list_count; j++)
+ if (tgt->list[j].key == n)
+ {
+ /* We are processing a group of mappings (e.g.
+ [GOMP_MAP_TO, GOMP_MAP_TO_PSET, GOMP_MAP_POINTER]).
+ Find the right group in the target_mem_desc's variable
+ list, and increment the refcounts for each item in that
+ group. */
+ for (size_t k = 0; k < groupnum; k++)
+ if (j + k < tgt->list_count && tgt->list[j + k].key)
+ {
+ tgt->list[j + k].key->refcount++;
+ tgt->list[j + k].key->dynamic_refcount++;
+ }
+ processed = true;
+ break;
+ }
+
+ if (!processed)
+ {
+ gomp_mutex_unlock (&acc_dev->lock);
+ gomp_fatal ("dynamic refcount incrementing failed for "
+ "pointer/pset");
+ }
+ }
+ else if (hostaddrs[i])
+ {
+ /* The data is not mapped already. Map it now, unless the first
+ member in the group has a NULL pointer (e.g. a non-present
+ optional parameter). */
+ gomp_mutex_unlock (&acc_dev->lock);
+
+ struct target_mem_desc *tgt
+ = gomp_map_vars_async (acc_dev, aq, groupnum, &hostaddrs[i], NULL,
+ &sizes[i], &kinds[i], true,
+ GOMP_MAP_VARS_ENTER_DATA);
+ assert (tgt);
+
+ gomp_mutex_lock (&acc_dev->lock);
+
+ for (size_t j = 0; j < tgt->list_count; j++)
+ {
+ n = tgt->list[j].key;
+ if (n)
+ n->dynamic_refcount++;
+ }
+ }
i = group_last;
}
+
+ gomp_mutex_unlock (&acc_dev->lock);
}
/* Unmap variables for OpenACC "exit data". */
@@ -1128,21 +1259,11 @@ goacc_exit_data_internal (struct gomp_device_descr *acc_dev, size_t mapnum,
for (size_t i = 0; i < mapnum; ++i)
{
unsigned char kind = kinds[i] & 0xff;
- bool copyfrom = false;
- bool finalize = false;
-
- if (kind == GOMP_MAP_FORCE_FROM
- || kind == GOMP_MAP_DELETE
- || kind == GOMP_MAP_FORCE_DETACH)
- finalize = true;
switch (kind)
{
case GOMP_MAP_FROM:
case GOMP_MAP_FORCE_FROM:
- copyfrom = true;
- /* Fallthrough. */
-
case GOMP_MAP_TO_PSET:
case GOMP_MAP_POINTER:
case GOMP_MAP_DELETE:
@@ -1166,54 +1287,7 @@ goacc_exit_data_internal (struct gomp_device_descr *acc_dev, size_t mapnum,
if (n == NULL)
continue;
- if (finalize)
- {
- if (n->refcount != REFCOUNT_INFINITY)
- n->refcount -= n->virtual_refcount;
- n->virtual_refcount = 0;
- }
-
- if (n->virtual_refcount > 0)
- {
- if (n->refcount != REFCOUNT_INFINITY)
- n->refcount--;
- n->virtual_refcount--;
- }
- else if (n->refcount > 0 && n->refcount != REFCOUNT_INFINITY)
- n->refcount--;
-
- if (n->refcount == 0)
- {
- if (copyfrom)
- {
- void *d = (void *) (n->tgt->tgt_start + n->tgt_offset
- + cur_node.host_start - n->host_start);
- gomp_copy_dev2host (acc_dev, aq,
- (void *) cur_node.host_start, d,
- cur_node.host_end - cur_node.host_start);
- }
-
- if (aq)
- /* TODO We can't do the 'is_tgt_unmapped' checking -- see the
- 'gomp_unref_tgt' comment in
- <http://mid.mail-archive.com/878snl36eu.fsf@euler.schwinge.homeip.net>;
- PR92881. */
- gomp_remove_var_async (acc_dev, n, aq);
- else
- {
- size_t num_mappings = 0;
- /* If the target_mem_desc represents a single data mapping,
- we can check that it is freed when this splay tree key's
- refcount reaches zero. Otherwise (e.g. for a
- 'GOMP_MAP_STRUCT' mapping with multiple members), fall
- back to skipping the test. */
- for (size_t l_i = 0; l_i < n->tgt->list_count; ++l_i)
- if (n->tgt->list[l_i].key)
- ++num_mappings;
- bool is_tgt_unmapped = gomp_remove_var (acc_dev, n);
- assert (is_tgt_unmapped || num_mappings > 1);
- }
- }
+ goacc_exit_datum_1 (acc_dev, hostaddrs[i], size, kind, n, aq);
}
break;
diff --git a/libgomp/target.c b/libgomp/target.c
index d4a4a408b40..d6b3572c8d8 100644
--- a/libgomp/target.c
+++ b/libgomp/target.c
@@ -668,8 +668,7 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
struct target_mem_desc *tgt
= gomp_malloc (sizeof (*tgt) + sizeof (tgt->list[0]) * mapnum);
tgt->list_count = mapnum;
- tgt->refcount = (pragma_kind == GOMP_MAP_VARS_ENTER_DATA
- || pragma_kind == GOMP_MAP_VARS_OPENACC_ENTER_DATA) ? 0 : 1;
+ tgt->refcount = pragma_kind == GOMP_MAP_VARS_ENTER_DATA ? 0 : 1;
tgt->device_descr = devicep;
tgt->prev = NULL;
struct gomp_coalesce_buf cbuf, *cbufp = NULL;
@@ -1095,7 +1094,7 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
tgt->list[i].copy_from = false;
tgt->list[i].always_copy_from = false;
tgt->list[i].do_detach
- = (pragma_kind != GOMP_MAP_VARS_OPENACC_ENTER_DATA);
+ = (pragma_kind != GOMP_MAP_VARS_ENTER_DATA);
n->refcount++;
}
else
@@ -1156,7 +1155,7 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
tgt->list[i].offset = 0;
tgt->list[i].length = k->host_end - k->host_start;
k->refcount = 1;
- k->virtual_refcount = 0;
+ k->dynamic_refcount = 0;
tgt->refcount++;
array->left = NULL;
array->right = NULL;
@@ -1295,20 +1294,8 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
/* If the variable from "omp target enter data" map-list was already mapped,
tgt is not needed. Otherwise tgt will be freed by gomp_unmap_vars or
gomp_exit_data. */
- if ((pragma_kind == GOMP_MAP_VARS_ENTER_DATA
- || pragma_kind == GOMP_MAP_VARS_OPENACC_ENTER_DATA)
- && tgt->refcount == 0)
- {
- /* If we're about to discard a target_mem_desc with no "structural"
- references (tgt->refcount == 0), any splay keys linked in the tgt's
- list must have their virtual refcount incremented to represent that
- "lost" reference in order to implement the semantics of the OpenACC
- "present increment" operation properly. */
- if (pragma_kind == GOMP_MAP_VARS_OPENACC_ENTER_DATA)
- for (i = 0; i < tgt->list_count; i++)
- if (tgt->list[i].key)
- tgt->list[i].key->virtual_refcount++;
-
+ if (pragma_kind == GOMP_MAP_VARS_ENTER_DATA && tgt->refcount == 0)
+ {
free (tgt);
tgt = NULL;
}
@@ -1460,14 +1447,7 @@ gomp_unmap_vars_internal (struct target_mem_desc *tgt, bool do_copyfrom,
continue;
bool do_unmap = false;
- if (k->tgt == tgt
- && k->virtual_refcount > 0
- && k->refcount != REFCOUNT_INFINITY)
- {
- k->virtual_refcount--;
- k->refcount--;
- }
- else if (k->refcount > 1 && k->refcount != REFCOUNT_INFINITY)
+ if (k->refcount > 1 && k->refcount != REFCOUNT_INFINITY)
k->refcount--;
else if (k->refcount == 1)
{
@@ -1632,7 +1612,7 @@ gomp_load_image_to_device (struct gomp_device_descr *devicep, unsigned version,
k->tgt = tgt;
k->tgt_offset = target_table[i].start;
k->refcount = REFCOUNT_INFINITY;
- k->virtual_refcount = 0;
+ k->dynamic_refcount = 0;
k->aux = NULL;
array->left = NULL;
array->right = NULL;
@@ -1666,7 +1646,7 @@ gomp_load_image_to_device (struct gomp_device_descr *devicep, unsigned version,
k->tgt = tgt;
k->tgt_offset = target_var->start;
k->refcount = is_link_var ? REFCOUNT_LINK : REFCOUNT_INFINITY;
- k->virtual_refcount = 0;
+ k->dynamic_refcount = 0;
k->aux = NULL;
array->left = NULL;
array->right = NULL;
@@ -2936,7 +2916,7 @@ omp_target_associate_ptr (const void *host_ptr, const void *device_ptr,
k->tgt = tgt;
k->tgt_offset = (uintptr_t) device_ptr + device_offset;
k->refcount = REFCOUNT_INFINITY;
- k->virtual_refcount = 0;
+ k->dynamic_refcount = 0;
k->aux = NULL;
array->left = NULL;
array->right = NULL;
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/pr92843-1.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/pr92843-1.c
index 78fe1402ad4..db5b35b08d9 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/pr92843-1.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/pr92843-1.c
@@ -4,7 +4,6 @@
/* { dg-skip-if "" { *-*-* } { "*" } { "-DACC_MEM_SHARED=0" } } */
#include <assert.h>
-#include <stdio.h>
#include <stdlib.h>
#include <openacc.h>
@@ -135,15 +134,7 @@ test_acc_data ()
assert (acc_is_present (h, sizeof h));
assign_array (h, N, c1);
- fprintf (stderr, "CheCKpOInT1\n");
- // { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
acc_copyout_finalize (h, sizeof h);
- //TODO goacc_exit_datum: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- //TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
- //TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
- //TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
- fprintf (stderr, "CheCKpOInT2\n");
- // { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
assert (acc_is_present (h, sizeof h));
verify_array (h, N, c1);
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/refcounting-1.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/refcounting-1.c
new file mode 100644
index 00000000000..4e6d06d48d5
--- /dev/null
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/refcounting-1.c
@@ -0,0 +1,31 @@
+/* Test dynamic unmapping of separate structure members. */
+
+/* { dg-skip-if "" { *-*-* } { "-DACC_MEM_SHARED=1" } } */
+
+#include <assert.h>
+#include <openacc.h>
+
+struct s
+{
+ char a;
+ char b;
+};
+
+int main ()
+{
+ struct s s;
+
+#pragma acc enter data create(s.a, s.b)
+
+ assert (acc_is_present (&s.a, sizeof s.a));
+ assert (acc_is_present (&s.b, sizeof s.b));
+
+#pragma acc exit data delete(s.a)
+#pragma acc exit data delete(s.b)
+
+ assert (!acc_is_present (&s.a, sizeof s.a));
+ assert (!acc_is_present (&s.b, sizeof s.b));
+
+ return 0;
+}
+
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/refcounting-2.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/refcounting-2.c
new file mode 100644
index 00000000000..5539fd8d57f
--- /dev/null
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/refcounting-2.c
@@ -0,0 +1,31 @@
+/* Test dynamic unmapping of separate structure members. */
+
+/* { dg-skip-if "" { *-*-* } { "-DACC_MEM_SHARED=1" } } */
+
+#include <assert.h>
+#include <openacc.h>
+
+struct s
+{
+ char a;
+ char b;
+};
+
+int main ()
+{
+ struct s s;
+
+#pragma acc enter data create(s.a, s.b)
+
+ assert (acc_is_present (&s.a, sizeof s.a));
+ assert (acc_is_present (&s.b, sizeof s.b));
+
+ acc_delete (&s.a, sizeof s.a);
+ acc_delete (&s.b, sizeof s.b);
+
+ assert (!acc_is_present (&s.a, sizeof s.a));
+ assert (!acc_is_present (&s.b, sizeof s.b));
+
+ return 0;
+}
+
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/struct-3-1-1.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/struct-3-1-1.c
new file mode 100644
index 00000000000..a644ea9c26f
--- /dev/null
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/struct-3-1-1.c
@@ -0,0 +1,34 @@
+/* Test dynamic mapping of separate structure members. */
+
+#include <assert.h>
+#include <stdio.h>
+#include <openacc.h>
+
+struct s
+{
+ char a;
+ float b;
+};
+
+int main ()
+{
+ struct s s;
+
+#pragma acc enter data create(s.a)
+ assert (acc_is_present (&s.a, sizeof s.a));
+
+ fprintf (stderr, "CheCKpOInT1\n");
+ /* { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" } */
+#pragma acc enter data create(s.b)
+ /* { dg-output "(\n|\r\n|\r)libgomp: Trying to map into device \\\[\[0-9a-fA-FxX.\]+\\\) structure element when other mapped elements from the same structure weren't mapped together with it(\n|\r\n|\r)$" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
+ { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
+ { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log. */
+ fprintf (stderr, "CheCKpOInT2\n");
+ /* { dg-output "CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } } */
+ assert (acc_is_present (&s.b, sizeof s.b));
+
+ //TODO PR95236
+ assert (acc_is_present (&s, sizeof s));
+
+ return 0;
+}
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/structured-dynamic-lifetimes-4.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/structured-dynamic-lifetimes-4.c
index e9a6510ace8..09d2ad54e87 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/structured-dynamic-lifetimes-4.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/structured-dynamic-lifetimes-4.c
@@ -13,8 +13,6 @@ main (int argc, char *argv[])
char *block2 = (char *) malloc (SIZE);
char *block3 = (char *) malloc (SIZE);
- /* Doing this twice ensures that we have a non-zero virtual refcount. Make
- sure that works too. */
#ifdef OPENACC_API
acc_copyin (block1, SIZE);
acc_copyin (block1, SIZE);
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6-no_finalize.F90 b/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6-no_finalize.F90
index ed4f10e7a3f..038f04a3c37 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6-no_finalize.F90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6-no_finalize.F90
@@ -1,8 +1,5 @@
! { dg-do run }
-/* Nullify the 'finalize' clause, which disturbs reference counting. */
+/* Nullify the 'finalize' clause. */
#define finalize
#include "deep-copy-6.f90"
-
-! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
-! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" }
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6.f90 b/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6.f90
index 5837a403910..6aab6a4a763 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/deep-copy-6.f90
@@ -40,15 +40,7 @@ program dtype
if (.not. acc_is_present(var%a(5:n - 5))) stop 11
if (.not. acc_is_present(var%b(5:n - 5))) stop 12
if (.not. acc_is_present(var)) stop 13
- print *, "CheCKpOInT1"
- ! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
!$acc exit data copyout(var%a(5:n - 5), var%b(5:n - 5)) finalize
- !TODO goacc_exit_data_internal: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- !TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
- !TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
- !TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
- print *, "CheCKpOInT2"
- ! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
if (acc_get_device_type() .ne. acc_device_host) then
if (acc_is_present(var%a(5:n - 5))) stop 21
if (acc_is_present(var%b(5:n - 5))) stop 22
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/dynamic-incr-structural-1.f90 b/libgomp/testsuite/libgomp.oacc-fortran/dynamic-incr-structural-1.f90
new file mode 100644
index 00000000000..6b17b1dbbc9
--- /dev/null
+++ b/libgomp/testsuite/libgomp.oacc-fortran/dynamic-incr-structural-1.f90
@@ -0,0 +1,49 @@
+! { dg-do run }
+! { dg-skip-if "" { *-*-* } { "*" } { "-DACC_MEM_SHARED=0" } }
+
+program map_multi
+ use openacc
+ implicit none
+ integer, parameter :: n = 512
+ integer, allocatable :: a(:), b(:), c(:)
+
+ allocate(a(1:n))
+ allocate(b(1:n))
+ allocate(c(1:n))
+
+ !$acc data copy(a, b, c)
+
+ ! These arrays have descriptors, so use multiple mappings. Make sure those
+ ! are matched up properly with the mappings in the enclosing data region.
+ !$acc enter data copyin(a)
+ !$acc enter data copyin(b)
+ !$acc enter data copyin(c)
+
+ !$acc end data
+
+ if (.not.acc_is_present (a)) stop 1
+ if (.not.acc_is_present (b)) stop 2
+ if (.not.acc_is_present (c)) stop 3
+
+ !$acc exit data delete(a)
+
+ if (acc_is_present (a)) stop 4
+ if (.not.acc_is_present (b)) stop 5
+ if (.not.acc_is_present (c)) stop 6
+
+ !$acc exit data delete(b)
+
+ if (acc_is_present (a)) stop 7
+ if (acc_is_present (b)) stop 8
+ if (.not.acc_is_present (c)) stop 9
+
+ !$acc exit data delete(c)
+
+ if (acc_is_present (a)) stop 10
+ if (acc_is_present (b)) stop 11
+ if (acc_is_present (c)) stop 12
+
+ deallocate(a)
+ deallocate(b)
+ deallocate(c)
+end program map_multi
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-1.f90 b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-1.f90
index 445cbabb8ca..1d97dd382d4 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-1.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-1.f90
@@ -21,15 +21,7 @@ program main
if (.not. acc_is_present(var%a)) stop 1
if (.not. acc_is_present(var)) stop 2
- print *, "CheCKpOInT1"
- ! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
!$acc exit data delete(var%a) finalize
- !TODO goacc_exit_data_internal: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- !TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
- !TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
- !TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
- print *, "CheCKpOInT2"
- ! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
if (acc_is_present(var%a)) stop 3
if (.not. acc_is_present(var)) stop 4
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-2.F90 b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-2.F90
index 7b206ac2042..4307f50c46e 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-2.F90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-1-2.F90
@@ -1,9 +1,6 @@
! { dg-do run }
! { dg-skip-if "" { *-*-* } { "*" } { "-DACC_MEM_SHARED=0" } }
-/* Nullify the 'finalize' clause, which disturbs reference counting. */
+/* Nullify the 'finalize' clause. */
#define finalize
#include "mdc-refcount-1-1-1.f90"
-
-! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
-! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" }
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-1.f90 b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-1.f90
index 8554534b2f2..e6f3f4afc3b 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-1.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-1.f90
@@ -23,15 +23,7 @@ program main
if (.not. acc_is_present(var%a)) stop 1
if (.not. acc_is_present(var)) stop 2
- print *, "CheCKpOInT1"
- ! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
!$acc exit data delete(var%a) finalize
- !TODO goacc_exit_data_internal: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- !TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
- !TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
- !TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
- print *, "CheCKpOInT2"
- ! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
if (acc_is_present(var%a)) stop 3
if (.not. acc_is_present(var)) stop 4
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-2.f90 b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-2.f90
index 8e696cc70e8..78f54e64dce 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-2.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-2-2.f90
@@ -23,15 +23,7 @@ program main
if (.not. acc_is_present(var%a)) stop 1
if (.not. acc_is_present(var)) stop 2
- print *, "CheCKpOInT1"
- ! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
!$acc exit data delete(var%a)
- !TODO goacc_exit_data_internal: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- !TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
- !TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
- !TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
- print *, "CheCKpOInT2"
- ! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
if (acc_is_present(var%a)) stop 3
if (.not. acc_is_present(var)) stop 4
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-3-1.f90 b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-3-1.f90
index 070a6f8e149..f9dcb485b26 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-3-1.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-3-1.f90
@@ -24,15 +24,7 @@ program main
if (.not. acc_is_present(var)) stop 2
!$acc exit data detach(var%a)
- print *, "CheCKpOInT1"
- ! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
!$acc exit data delete(var%a) finalize
- !TODO goacc_exit_data_internal: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- !TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
- !TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
- !TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
- print *, "CheCKpOInT2"
- ! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
if (acc_is_present(var%a)) stop 3
if (.not. acc_is_present(var)) stop 4
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-4-1.f90 b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-4-1.f90
index b22e411567f..fbd52373946 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-4-1.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/mdc-refcount-1-4-1.f90
@@ -23,16 +23,15 @@ program main
if (.not. acc_is_present(var%a)) stop 1
if (.not. acc_is_present(var)) stop 2
+ !$acc exit data detach(var%a) finalize
print *, "CheCKpOInT1"
! { dg-output ".*CheCKpOInT1(\n|\r\n|\r)" }
- !$acc exit data detach(var%a) finalize
- !TODO goacc_exit_data_internal: Assertion `is_tgt_unmapped || num_mappings > 1' failed.
- !TODO { dg-output ".*\[Aa\]ssert.*is_tgt_unmapped" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
+ !$acc exit data delete(var%a)
+ !TODO { dg-output "(\n|\r\n|\r)libgomp: attach count underflow(\n|\r\n|\r)$" { target { ! openacc_host_selected } } } ! Scan for what we expect in the "XFAILed" case (without actually XFAILing).
!TODO { dg-shouldfail "XFAILed" { ! openacc_host_selected } } ! ... instead of 'dg-xfail-run-if' so that 'dg-output' is evaluated at all.
!TODO { dg-final { if { [dg-process-target { xfail { ! openacc_host_selected } }] == "F" } { xfail "[testname-for-summary] really is XFAILed" } } } ! ... so that we still get an XFAIL visible in the log.
print *, "CheCKpOInT2"
! { dg-output ".CheCKpOInT2(\n|\r\n|\r)" { target { openacc_host_selected } } }
- !$acc exit data delete(var%a)
if (acc_is_present(var%a)) stop 3
if (.not. acc_is_present(var)) stop 4
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2020-07-10 15:09 [gcc r11-2020] openacc: Adjust dynamic reference count semantics Julian Brown
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