Hi!
On 2017-05-01T18:27:59-0700, Cesar Philippidis <ce...@codesourcery.com> wrote:
> --- a/gcc/fortran/openmp.c
> +++ b/gcc/fortran/openmp.c
> @@ -6090,6 +6090,18 @@ resolve_oacc_loop_blocks (gfc_code *code)
> + if (code->op == EXEC_OACC_LOOP
> + && code->ext.omp_clauses->lists[OMP_LIST_REDUCTION]
> + && code->ext.omp_clauses->gang)
> + {
> + for (c = omp_current_ctx; c; c = c->previous)
> + if (!oacc_is_loop (c->code))
> + break;
> + if (c == NULL || !(oacc_is_parallel (c->code)
> + || oacc_is_kernels (c->code)))
> + gfc_error ("gang reduction on an orphan loop at %L", &code->loc);
> + }
To avoid erroneous diagnostics, we also need to handle the OpenACC
'serial' construct here. I've adapted Kwok's relevant patch, and pushed
to master branch commit f1a58ab0db20c0862e8b5039bd448fc8c9799cac
"[OpenACC] Allow gang reductions inside serial constructs", see attached.
Grüße
Thomas
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>From f1a58ab0db20c0862e8b5039bd448fc8c9799cac Mon Sep 17 00:00:00 2001
From: Kwok Cheung Yeung <k...@codesourcery.com>
Date: Fri, 13 Mar 2020 11:13:49 -0700
Subject: [PATCH] [OpenACC] Allow gang reductions inside serial constructs
... fixing a regression introduced in the preceding
commit 2b7dac2c0dcb087da9e4018943c023c0678234a3
"Make OpenACC orphan gang reductions errors".
gcc/fortran/
* openmp.c (oacc_is_serial, oacc_is_parallel_or_serial): New.
(resolve_oacc_loop_blocks): Use oacc_is_parallel_or_serial instead of
oacc_is_parallel.
libgomp/
* testsuite/libgomp.oacc-fortran/parallel-dims.f90: Remove
temporary skip.
Co-Authored-By: Thomas Schwinge <tho...@codesourcery.com>
---
gcc/fortran/openmp.c | 14 +++++++++++++-
.../libgomp.oacc-fortran/parallel-dims.f90 | 1 -
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/gcc/fortran/openmp.c b/gcc/fortran/openmp.c
index 4fa38691c01..b4100577e51 100644
--- a/gcc/fortran/openmp.c
+++ b/gcc/fortran/openmp.c
@@ -8334,6 +8334,18 @@ oacc_is_kernels (gfc_code *code)
return code->op == EXEC_OACC_KERNELS || code->op == EXEC_OACC_KERNELS_LOOP;
}
+static bool
+oacc_is_serial (gfc_code *code)
+{
+ return code->op == EXEC_OACC_SERIAL || code->op == EXEC_OACC_SERIAL_LOOP;
+}
+
+static bool
+oacc_is_parallel_or_serial (gfc_code *code)
+{
+ return oacc_is_parallel (code) || oacc_is_serial (code);
+}
+
static gfc_statement
omp_code_to_statement (gfc_code *code)
{
@@ -8644,7 +8656,7 @@ resolve_oacc_loop_blocks (gfc_code *code)
for (c = omp_current_ctx; c; c = c->previous)
if (!oacc_is_loop (c->code))
break;
- if (c == NULL || !(oacc_is_parallel (c->code)
+ if (c == NULL || !(oacc_is_parallel_or_serial (c->code)
|| oacc_is_kernels (c->code)))
gfc_error ("gang reduction on an orphan loop at %L", &code->loc);
}
diff --git a/libgomp/testsuite/libgomp.oacc-fortran/parallel-dims.f90 b/libgomp/testsuite/libgomp.oacc-fortran/parallel-dims.f90
index 80d64030414..fad3d9d6a80 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/parallel-dims.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/parallel-dims.f90
@@ -3,7 +3,6 @@
! { dg-additional-sources parallel-dims-aux.c }
! { dg-do run }
- ! { dg-skip-if TODO { *-*-* } }
! { dg-prune-output "command-line option '-fintrinsic-modules-path=.*' is valid for Fortran but not for C" }
! { dg-additional-options "-fopt-info-note-omp" }
--
2.33.0
