1 files changed, 62 insertions, 0 deletions
diff --git a/libgomp/scope.c b/libgomp/scope.c
new file mode 100644
index 0000000..8a4691c
--- /dev/null
+++ b/libgomp/scope.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 2021 Free Software Foundation, Inc.
+   Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+   This file is part of the GNU Offloading and Multi Processing Library
+   (libgomp).
+
+   Libgomp is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+   more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This file handles the SCOPE construct with task reductions.  */
+
+#include "libgomp.h"
+#include <string.h>
+
+
+ialias_redirect (GOMP_taskgroup_reduction_register)
+
+/* This routine is called when first encountering a scope construct
+   with task reductions.  While scope is not a work-sharing construct,
+   if it has task reductions on it, we treat it as one, but as if it is
+   nowait, so the work-sharing behavior is done solely to choose which
+   thread does the initial initialization of task reductions and which
+   threads follow.  scope with task reductions must not be nowait,
+   but the barrier and GOMP_workshare_task_reduction_unregister are emitted
+   by the lowered code later.  */
+
+void
+GOMP_scope_start (uintptr_t *reductions)
+{
+  struct gomp_thread *thr = gomp_thread ();
+
+  gomp_workshare_taskgroup_start ();
+  if (gomp_work_share_start (0))
+    {
+      GOMP_taskgroup_reduction_register (reductions);
+      thr->task->taskgroup->workshare = true;
+      thr->ts.work_share->task_reductions = reductions;
+      gomp_work_share_init_done ();
+    }
+  else
+    {
+      uintptr_t *first_reductions = thr->ts.work_share->task_reductions;
+      gomp_workshare_task_reduction_register (reductions,
+					      first_reductions);
+    }
+}