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OpenMP: Skip target-nesting warning for reverse offload 

gcc/ChangeLog:

	* omp-low.cc (check_omp_nesting_restrictions): Skip warning for
	target inside target if inner is reverse offload.

gcc/testsuite/ChangeLog:

	* c-c++-common/gomp/target-device-ancestor-5.c: New test.
This commit is contained in:
Tobias Burnus 2022-05-17 22:09:16 +02:00
parent ddb1427def
commit 47554478a1
2 changed files with 38 additions and 0 deletions
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10
gcc/omp-low.cc
View File

@ -3883,6 +3883,16 @@ check_omp_nesting_restrictions (gimple *stmt, omp_context *ctx)
}
else
{
if ((gimple_omp_target_kind (ctx->stmt)
== GF_OMP_TARGET_KIND_REGION)
&& (gimple_omp_target_kind (stmt)
== GF_OMP_TARGET_KIND_REGION))
{
c = omp_find_clause (gimple_omp_target_clauses (stmt),
OMP_CLAUSE_DEVICE);
if (c && OMP_CLAUSE_DEVICE_ANCESTOR (c))
break;
}
warning_at (gimple_location (stmt), 0,
"%qs construct inside of %qs region",
stmt_name, ctx_stmt_name);

28
gcc/testsuite/c-c++-common/gomp/target-device-ancestor-5.c Normal file
View File

@ -0,0 +1,28 @@
#pragma omp requires reverse_offload /* { dg-message "sorry, unimplemented: 'reverse_offload' clause on 'requires' directive not supported yet" } */
void
foo ()
{
/* Good nesting - as reverse offload */
#pragma omp target
#pragma omp target device(ancestor:1) /* valid -> no warning */ /* { dg-bogus "'target' construct inside of 'target' region" } */
{ }
/* Bad nesting */
#pragma omp target
#pragma omp target /* { dg-warning "'target' construct inside of 'target' region" } */
#pragma omp target /* { dg-warning "'target' construct inside of 'target' region" } */
{ }
/* Good nesting - as reverse offload */
#pragma omp target
#pragma omp target /* { dg-warning "'target' construct inside of 'target' region" } */
#pragma omp target device(ancestor:1) /* valid -> no warning */ /* { dg-bogus "'target' construct inside of 'target' region" } */
{ }
#pragma omp target
#pragma omp target device(ancestor:1) /* valid -> no warning */ /* { dg-bogus "'target' construct inside of 'target' region" } */
#pragma omp target device(ancestor:1) /* { dg-error "OpenMP constructs are not allowed in target region with 'ancestor'" } */
{ }
}