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Fortran: openmp: Add support for thread_limit clause on target 

gcc/fortran/ChangeLog:

	* openmp.c (OMP_TARGET_CLAUSES): Add thread_limit.
	* trans-openmp.c (gfc_split_omp_clauses): Add thread_limit also to
	teams.

libgomp/ChangeLog:

	* testsuite/libgomp.fortran/thread-limit-1.f90: New test.
This commit is contained in:
Tobias Burnus 2021-11-15 15:44:11 +01:00
parent b2e1ac5485
commit 82ec4cb3c4
3 changed files with 45 additions and 1 deletions
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3
gcc/fortran/openmp.c
View File

@ -3563,7 +3563,8 @@ cleanup:
(omp_mask (OMP_CLAUSE_DEVICE) | OMP_CLAUSE_MAP | OMP_CLAUSE_IF \
| OMP_CLAUSE_DEPEND | OMP_CLAUSE_NOWAIT | OMP_CLAUSE_PRIVATE \
| OMP_CLAUSE_FIRSTPRIVATE | OMP_CLAUSE_DEFAULTMAP \
| OMP_CLAUSE_IS_DEVICE_PTR | OMP_CLAUSE_IN_REDUCTION)
| OMP_CLAUSE_IS_DEVICE_PTR | OMP_CLAUSE_IN_REDUCTION \
| OMP_CLAUSE_THREAD_LIMIT)
#define OMP_TARGET_DATA_CLAUSES \
(omp_mask (OMP_CLAUSE_DEVICE) | OMP_CLAUSE_MAP | OMP_CLAUSE_IF \
| OMP_CLAUSE_USE_DEVICE_PTR | OMP_CLAUSE_USE_DEVICE_ADDR)

2
gcc/fortran/trans-openmp.c
View File

@ -5870,6 +5870,8 @@ gfc_split_omp_clauses (gfc_code *code,
= code->ext.omp_clauses->lists[OMP_LIST_IS_DEVICE_PTR];
clausesa[GFC_OMP_SPLIT_TARGET].device
= code->ext.omp_clauses->device;
clausesa[GFC_OMP_SPLIT_TARGET].thread_limit
= code->ext.omp_clauses->thread_limit;
for (int i = 0; i < OMP_DEFAULTMAP_CAT_NUM; i++)
clausesa[GFC_OMP_SPLIT_TARGET].defaultmap[i]
= code->ext.omp_clauses->defaultmap[i];

41
libgomp/testsuite/libgomp.fortran/thread-limit-1.f90 Normal file
View File

@ -0,0 +1,41 @@
! { dg-additional-options "-fdump-tree-original" }
! { dg-final { scan-tree-dump-times "#pragma omp teams thread_limit\\(9\\)" 1 "original" } }
! { dg-final { scan-tree-dump-times "#pragma omp target thread_limit\\(9\\)" 1 "original" } }
! { dg-final { scan-tree-dump-times "#pragma omp target nowait thread_limit\\(4\\)" 1 "original" } }
! { dg-final { scan-tree-dump-times "#pragma omp parallel num_threads\\(1\\)" 1 "original" } }
! { dg-final { scan-tree-dump-times "#pragma omp target thread_limit\\(6\\)" 1 "original" } }
module m
use omp_lib
implicit none
contains
subroutine uncalled()
!$omp target teams thread_limit (9)
!$omp end target teams
end
subroutine foo ()
block
!$omp target parallel nowait thread_limit (4) num_threads (1)
if (omp_get_thread_limit () > 4) &
stop 1
!$omp end target parallel
end block
!$omp taskwait
end
end module
program main
use m
implicit none
!$omp target thread_limit (6)
if (omp_get_thread_limit () > 6) &
stop 2
!$omp end target
call foo ()
end