From cacf65d74463600815773255e8b82b4043432bd7 Mon Sep 17 00:00:00 2001
From: Julian Brown <julian@codesourcery.com>
Date: Wed, 26 Apr 2023 14:31:53 +0000
Subject: [PATCH] OpenACC: Stand-alone attach/detach clause fixes for Fortran
[PR109622]
This patch fixes several cases where multiple attach or detach mapping
nodes were being created for stand-alone attach or detach clauses
in Fortran. After the introduction of stricter checking later during
compilation, these extra nodes could cause ICEs, as seen in the PR.
The patch also fixes cases that "happened to work" previously where
the user attaches/detaches a pointer to array using a descriptor, and
(I think!) the "_data" field has offset zero, hence the same address as
the descriptor as a whole.
2023-04-27 Julian Brown <julian@codesourcery.com>
PR fortran/109622
gcc/fortran/
* trans-openmp.cc (gfc_trans_omp_clauses): Attach/detach clause fixes.
gcc/testsuite/
* gfortran.dg/goacc/attach-descriptor.f90: Adjust expected output.
libgomp/
* testsuite/libgomp.fortran/pr109622.f90: New test.
* testsuite/libgomp.fortran/pr109622-2.f90: New test.
* testsuite/libgomp.fortran/pr109622-3.f90: New test.
---
gcc/fortran/trans-openmp.cc | 36 +++++++++++++++++--
.../gfortran.dg/goacc/attach-descriptor.f90 | 12 +++----
.../testsuite/libgomp.fortran/pr109622-2.f90 | 32 +++++++++++++++++
.../testsuite/libgomp.fortran/pr109622-3.f90 | 32 +++++++++++++++++
.../testsuite/libgomp.fortran/pr109622.f90 | 32 +++++++++++++++++
5 files changed, 135 insertions(+), 9 deletions(-)
create mode 100644 libgomp/testsuite/libgomp.fortran/pr109622-2.f90
create mode 100644 libgomp/testsuite/libgomp.fortran/pr109622-3.f90
create mode 100644 libgomp/testsuite/libgomp.fortran/pr109622.f90
diff --git a/gcc/fortran/trans-openmp.cc b/gcc/fortran/trans-openmp.cc
index 71f71235756c..6ee22faa836a 100644
--- a/gcc/fortran/trans-openmp.cc
+++ b/gcc/fortran/trans-openmp.cc
@@ -3388,6 +3388,17 @@ gfc_trans_omp_clauses (stmtblock_t *block, gfc_omp_clauses *clauses,
gfc_add_block_to_block (block, &se.post);
if (pointer || allocatable)
{
+ /* If it's a bare attach/detach clause, we just want
+ to perform a single attach/detach operation, of the
+ pointer itself, not of the pointed-to object. */
+ if (openacc
+ && (n->u.map_op == OMP_MAP_ATTACH
+ || n->u.map_op == OMP_MAP_DETACH))
+ {
+ OMP_CLAUSE_SIZE (node) = size_zero_node;
+ goto finalize_map_clause;
+ }
+
node2 = build_omp_clause (input_location,
OMP_CLAUSE_MAP);
gomp_map_kind kind
@@ -3458,6 +3469,19 @@ gfc_trans_omp_clauses (stmtblock_t *block, gfc_omp_clauses *clauses,
{
if (pointer || (openacc && allocatable))
{
+ /* If it's a bare attach/detach clause, we just want
+ to perform a single attach/detach operation, of the
+ pointer itself, not of the pointed-to object. */
+ if (openacc
+ && (n->u.map_op == OMP_MAP_ATTACH
+ || n->u.map_op == OMP_MAP_DETACH))
+ {
+ OMP_CLAUSE_DECL (node)
+ = build_fold_addr_expr (inner);
+ OMP_CLAUSE_SIZE (node) = size_zero_node;
+ goto finalize_map_clause;
+ }
+
tree data, size;
if (lastref->u.c.component->ts.type == BT_CLASS)
@@ -3494,12 +3518,18 @@ gfc_trans_omp_clauses (stmtblock_t *block, gfc_omp_clauses *clauses,
else if (lastref->type == REF_ARRAY
&& lastref->u.ar.type == AR_FULL)
{
- /* Just pass the (auto-dereferenced) decl through for
- bare attach and detach clauses. */
+ /* Bare attach and detach clauses don't want any
+ additional nodes. */
if (n->u.map_op == OMP_MAP_ATTACH
|| n->u.map_op == OMP_MAP_DETACH)
{
- OMP_CLAUSE_DECL (node) = inner;
+ if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (inner)))
+ {
+ tree ptr = gfc_conv_descriptor_data_get (inner);
+ OMP_CLAUSE_DECL (node) = ptr;
+ }
+ else
+ OMP_CLAUSE_DECL (node) = inner;
OMP_CLAUSE_SIZE (node) = size_zero_node;
goto finalize_map_clause;
}
diff --git a/gcc/testsuite/gfortran.dg/goacc/attach-descriptor.f90 b/gcc/testsuite/gfortran.dg/goacc/attach-descriptor.f90
index 8c2ee4a5cca4..734afbe6ca48 100644
--- a/gcc/testsuite/gfortran.dg/goacc/attach-descriptor.f90
+++ b/gcc/testsuite/gfortran.dg/goacc/attach-descriptor.f90
@@ -11,19 +11,19 @@ program att
integer, pointer :: myptr(:)
!$acc enter data attach(myvar%arr2, myptr)
-! { dg-final { scan-tree-dump-times "(?n)#pragma acc enter data map\\(attach:myvar\\.arr2 \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(attach:\\(integer\\(kind=4\\)\\\[0:\\\] \\*\\) myptr\\.data \\\[bias: 0\\\]\\);$" 1 "original" } }
-! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_enter_data map\\(attach:myvar\\.arr2 \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(attach:myptr\\.data \\\[bias: 0\\\]\\)$" 1 "gimple" } }
+! { dg-final { scan-tree-dump-times "(?n)#pragma acc enter data map\\(attach:\\(integer\\(kind=4\\)\\\[0:\\\] \\* restrict\\) myvar\\.arr2\\.data \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(attach:\\(integer\\(kind=4\\)\\\[0:\\\] \\*\\) myptr\\.data \\\[bias: 0\\\]\\);$" 1 "original" } }
+! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_enter_data map\\(attach:myvar\\.arr2\\.data \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(attach:myptr\\.data \\\[bias: 0\\\]\\)$" 1 "gimple" } }
!$acc exit data detach(myvar%arr2, myptr)
-! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data map\\(detach:myvar\\.arr2 \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(detach:\\(integer\\(kind=4\\)\\\[0:\\\] \\*\\) myptr\\.data \\\[bias: 0\\\]\\);$" 1 "original" } }
-! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_exit_data map\\(detach:myvar\\.arr2 \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(detach:myptr\\.data \\\[bias: 0\\\]\\)$" 1 "gimple" } }
+! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data map\\(detach:\\(integer\\(kind=4\\)\\\[0:\\\] \\* restrict\\) myvar\\.arr2\\.data \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(detach:\\(integer\\(kind=4\\)\\\[0:\\\] \\*\\) myptr\\.data \\\[bias: 0\\\]\\);$" 1 "original" } }
+! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_exit_data map\\(detach:myvar\\.arr2\\.data \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(detach:myptr\\.data \\\[bias: 0\\\]\\)$" 1 "gimple" } }
! Test valid usage and processing of the finalize clause.
!$acc exit data detach(myvar%arr2, myptr) finalize
-! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data map\\(detach:myvar\\.arr2 \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(detach:\\(integer\\(kind=4\\)\\\[0:\\\] \\*\\) myptr\\.data \\\[bias: 0\\\]\\) finalize;$" 1 "original" } }
+! { dg-final { scan-tree-dump-times "(?n)#pragma acc exit data map\\(detach:\\(integer\\(kind=4\\)\\\[0:\\\] \\* restrict\\) myvar\\.arr2\\.data \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(detach:\\(integer\\(kind=4\\)\\\[0:\\\] \\*\\) myptr\\.data \\\[bias: 0\\\]\\) finalize;$" 1 "original" } }
! For array-descriptor detaches, we no longer generate a "release" mapping
! for the pointed-to data for gimplify.c to turn into "delete". Make sure
! the mapping still isn't there.
-! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_exit_data map\\(force_detach:myvar\\.arr2 \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(force_detach:myptr\\.data \\\[bias: 0\\\]\\) finalize$" 1 "gimple" } }
+! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_exit_data map\\(force_detach:myvar\\.arr2\\.data \\\[bias: 0\\\]\\) map\\(to:myptr \\\[pointer set, len: \[0-9\]+\\\]\\) map\\(force_detach:myptr\\.data \\\[bias: 0\\\]\\) finalize$" 1 "gimple" } }
end program att
diff --git a/libgomp/testsuite/libgomp.fortran/pr109622-2.f90 b/libgomp/testsuite/libgomp.fortran/pr109622-2.f90
new file mode 100644
index 000000000000..8c5f373f39f7
--- /dev/null
+++ b/libgomp/testsuite/libgomp.fortran/pr109622-2.f90
@@ -0,0 +1,32 @@
+! { dg-do run }
+
+type t
+integer :: foo
+integer, pointer :: bar
+end type t
+
+type(t) :: var
+integer, target :: tgt
+
+var%bar => tgt
+
+var%foo = 99
+tgt = 199
+
+!$acc enter data copyin(var)
+
+!$acc enter data attach(var%bar)
+
+!$acc serial
+var%foo = 5
+var%bar = 7
+!$acc end serial
+
+!$acc exit data detach(var%bar)
+
+!$acc exit data copyout(var)
+
+if (var%foo.ne.5) stop 1
+if (tgt.ne.7) stop 2
+
+end
diff --git a/libgomp/testsuite/libgomp.fortran/pr109622-3.f90 b/libgomp/testsuite/libgomp.fortran/pr109622-3.f90
new file mode 100644
index 000000000000..3ee1b43a7464
--- /dev/null
+++ b/libgomp/testsuite/libgomp.fortran/pr109622-3.f90
@@ -0,0 +1,32 @@
+! { dg-do run }
+
+type t
+integer :: foo
+integer, pointer :: bar(:)
+end type t
+
+type(t) :: var
+integer, target :: tgt(20)
+
+var%bar => tgt
+
+var%foo = 99
+tgt = 199
+
+!$acc enter data copyin(var, tgt)
+
+!$acc enter data attach(var%bar)
+
+!$acc serial
+var%foo = 5
+var%bar = 7
+!$acc end serial
+
+!$acc exit data detach(var%bar)
+
+!$acc exit data copyout(var, tgt)
+
+if (var%foo.ne.5) stop 1
+if (any(tgt.ne.7)) stop 2
+
+end
diff --git a/libgomp/testsuite/libgomp.fortran/pr109622.f90 b/libgomp/testsuite/libgomp.fortran/pr109622.f90
new file mode 100644
index 000000000000..5b8c4102f768
--- /dev/null
+++ b/libgomp/testsuite/libgomp.fortran/pr109622.f90
@@ -0,0 +1,32 @@
+! { dg-do run }
+
+type t
+integer :: value
+type(t), pointer :: chain
+end type t
+
+type(t), target :: var, var2
+
+var%value = 99
+var2%value = 199
+
+var%chain => var2
+nullify(var2%chain)
+
+!$acc enter data copyin(var, var2)
+
+!$acc enter data attach(var%chain)
+
+!$acc serial
+var%value = 5
+var%chain%value = 7
+!$acc end serial
+
+!$acc exit data detach(var%chain)
+
+!$acc exit data copyout(var, var2)
+
+if (var%value.ne.5) stop 1
+if (var2%value.ne.7) stop 2
+
+end
--
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