re PR libgomp/79876 (FAIL: libgomp.fortran/strassen.f90 -O execution test on x86_64-apple-darwin16)

	PR libgomp/79876
	* config/posix/thread-stacksize.h: New file.
	* config/darwin/thread-stacksize.h: New file.
	* config/nvptx/thread-stacksize.h: New file.
	* env.c: Include thread-stacksize.h.
	(initialize_env): Initialize stacksize to GOMP_DEFAULT_STACKSIZE
	instead of 0.  Call pthread_attr_setstacksize even if
	GOMP_DEFAULT_STACKSIZE is non-zero.

From-SVN: r246675

3 files changed, 83 insertions, 0 deletions

diff --git a/libgomp/config/darwin/thread-stacksize.h b/libgomp/config/darwin/thread-stacksize.h
new file mode 100644
index 0000000..ae3910d
--- /dev/null
+++ b/libgomp/config/darwin/thread-stacksize.h
@@ -0,0 +1,29 @@
+/* Copyright (C) 2017 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/>.  */
+
+/* OSX uses too small default stack size (0.5MB), use a bigger default.
+   Users can still override it through OMP_STACKSIZE or GOMP_STACKSIZE
+   environment variables.  */
+#define GOMP_DEFAULT_STACKSIZE	(2 * 1024 * 1024)
diff --git a/libgomp/config/nvptx/thread-stacksize.h b/libgomp/config/nvptx/thread-stacksize.h
new file mode 100644
index 0000000..19da63f
--- /dev/null
+++ b/libgomp/config/nvptx/thread-stacksize.h
@@ -0,0 +1,27 @@
+/* Copyright (C) 2017 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/>.  */
+
+/* Not really applicable to NVPTX.  */
+#define GOMP_DEFAULT_STACKSIZE	0
diff --git a/libgomp/config/posix/thread-stacksize.h b/libgomp/config/posix/thread-stacksize.h
new file mode 100644
index 0000000..570c486
--- /dev/null
+++ b/libgomp/config/posix/thread-stacksize.h
@@ -0,0 +1,27 @@
+/* Copyright (C) 2017 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/>.  */
+
+/* 0 means use the system default.  */
+#define GOMP_DEFAULT_STACKSIZE	0