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Fortran: Fixes for OpenMP loop-iter privatization (PRs 95109 + 94690) 

This commit also fixes a gfortran.dg/gomp/target1.f90 regression;
target1.f90 tests the resolve.c and openmp.c changes.

gcc/fortran/ChangeLog:

	PR fortran/95109
	PR fortran/94690
	* resolve.c (gfc_resolve_code): Also call
	gfc_resolve_omp_parallel_blocks for 'distribute parallel do (simd)'.
	* openmp.c (gfc_resolve_omp_parallel_blocks): Handle it.
	(gfc_resolve_do_iterator): Remove special code for SIMD, which is
	not needed.
	* trans-openmp.c (gfc_trans_omp_target): For TARGET_PARALLEL_DO_SIMD,
	call simd not do processing function.

gcc/testsuite/ChangeLog:

	PR fortran/95109
	PR fortran/94690
	* gfortran.dg/gomp/combined-if.f90: Update scan-tree-dump-times for
	'omp simd.*if'.
	* gfortran.dg/gomp/openmp-simd-5.f90: New test.
This commit is contained in:
Tobias Burnus 2020-09-09 09:33:51 +02:00
parent f56f1a5a75
commit 61c2d476a5
5 changed files with 36 additions and 27 deletions
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27
gcc/fortran/openmp.c
View File

@ -5962,6 +5962,8 @@ gfc_resolve_omp_parallel_blocks (gfc_code *code, gfc_namespace *ns)
switch (code->op)
{
case EXEC_OMP_DISTRIBUTE_PARALLEL_DO:
case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD:
case EXEC_OMP_PARALLEL_DO:
case EXEC_OMP_PARALLEL_DO_SIMD:
case EXEC_OMP_TARGET_PARALLEL_DO:
@ -6047,31 +6049,6 @@ gfc_resolve_do_iterator (gfc_code *code, gfc_symbol *sym, bool add_clause)
if (omp_current_ctx->sharing_clauses->contains (sym))
return;
if (omp_current_ctx->is_openmp && omp_current_ctx->code->block)
{
/* SIMD is handled differently and, hence, ignored here. */
gfc_code *omp_code = omp_current_ctx->code->block;
for ( ; omp_code->next; omp_code = omp_code->next)
switch (omp_code->op)
{
case EXEC_OMP_SIMD:
case EXEC_OMP_DO_SIMD:
case EXEC_OMP_PARALLEL_DO_SIMD:
case EXEC_OMP_DISTRIBUTE_SIMD:
case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD:
case EXEC_OMP_TEAMS_DISTRIBUTE_SIMD:
case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD:
case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD:
case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD:
case EXEC_OMP_TARGET_PARALLEL_DO_SIMD:
case EXEC_OMP_TARGET_SIMD:
case EXEC_OMP_TASKLOOP_SIMD:
return;
default:
break;
}
}
if (! omp_current_ctx->private_iterators->add (sym) && add_clause)
{
gfc_omp_clauses *omp_clauses = omp_current_ctx->code->ext.omp_clauses;

2
gcc/fortran/resolve.c
View File

@ -11722,6 +11722,8 @@ gfc_resolve_code (gfc_code *code, gfc_namespace *ns)
omp_workshare_flag = 1;
gfc_resolve_omp_parallel_blocks (code, ns);
break;
case EXEC_OMP_DISTRIBUTE_PARALLEL_DO:
case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD:
case EXEC_OMP_PARALLEL:
case EXEC_OMP_PARALLEL_DO:
case EXEC_OMP_PARALLEL_DO_SIMD:

8
gcc/fortran/trans-openmp.c
View File

@ -5591,13 +5591,19 @@ gfc_trans_omp_target (gfc_code *code)
}
break;
case EXEC_OMP_TARGET_PARALLEL_DO:
case EXEC_OMP_TARGET_PARALLEL_DO_SIMD:
stmt = gfc_trans_omp_parallel_do (code, &block, clausesa);
if (TREE_CODE (stmt) != BIND_EXPR)
stmt = build3_v (BIND_EXPR, NULL, stmt, poplevel (1, 0));
else
poplevel (0, 0);
break;
case EXEC_OMP_TARGET_PARALLEL_DO_SIMD:
stmt = gfc_trans_omp_parallel_do_simd (code, &block, clausesa);
if (TREE_CODE (stmt) != BIND_EXPR)
stmt = build3_v (BIND_EXPR, NULL, stmt, poplevel (1, 0));
else
poplevel (0, 0);
break;
case EXEC_OMP_TARGET_SIMD:
stmt = gfc_trans_omp_do (code, EXEC_OMP_SIMD, &block,
&clausesa[GFC_OMP_SPLIT_SIMD], NULL_TREE);

2
gcc/testsuite/gfortran.dg/gomp/combined-if.f90
View File

@ -104,6 +104,6 @@ contains
end module
! { dg-final { scan-tree-dump-times "(?n)#pragma omp target.* if\\(" 9 "omplower" } }
! { dg-final { scan-tree-dump-times "(?n)#pragma omp simd.* if\\(" 4 "omplower" { target { ! offload_nvptx } } } }
! { dg-final { scan-tree-dump-times "(?n)#pragma omp simd.* if\\(" 5 "omplower" { target { ! offload_nvptx } } } }
! { dg-final { scan-tree-dump-times "(?n)#pragma omp simd.* if\\(" 7 "omplower" { target { offload_nvptx } } } }
! { dg-final { scan-tree-dump-times "(?n)#pragma omp parallel.* if\\(" 6 "omplower" } }

24
gcc/testsuite/gfortran.dg/gomp/openmp-simd-5.f90 Normal file
View File

@ -0,0 +1,24 @@
! { dg-additional-options "-fdump-tree-original" }
!
! Related:
! PR fortran/95109
! PR fortran/94690
!
implicit none
integer :: i, j, k, ll
integer :: a
!$omp target parallel do simd collapse(1)
do i = 1, 5
do j = 1, 5
do k = 1, 5
a = a + 1
end do
do ll = 1, 5
a = a + 1
end do
end do
end do
!$omp end target parallel do simd
end
! { dg-final { scan-tree-dump-times "omp simd linear\\(i:1\\) private\\(j\\) private\\(ll\\) private\\(k\\) collapse\\(1\\)" 1 "original" } }