[thirdparty/gcc.git] / libgcc / config / nvptx / reduction.c

/* Oversized reductions lock  variable
   Copyright (C) 2015-2020 Free Software Foundation, Inc.
   Contributed by Mentor Graphics.

This file is part of GCC.

GCC 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.

GCC 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/>.  */


/* We use a global lock variable for reductions on objects larger than
   64 bits.  Until and unless proven that lock contention for
   different reduction is a problem, a single lock will suffice.  */

unsigned volatile __reduction_lock = 0;
Commit	Line	Data
33f47f42	1	/* Oversized reductions lock variable
8d9254fc	2	Copyright (C) 2015-2020 Free Software Foundation, Inc.
33f47f42 NS	3	Contributed by Mentor Graphics.
	4
	5	This file is part of GCC.
	6
	7	GCC is free software; you can redistribute it and/or modify it under
	8	the terms of the GNU General Public License as published by the Free
	9	Software Foundation; either version 3, or (at your option) any later
	10	version.
	11
	12	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	13	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	14	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	15	for more details.
	16
	17	Under Section 7 of GPL version 3, you are granted additional
	18	permissions described in the GCC Runtime Library Exception, version
	19	3.1, as published by the Free Software Foundation.
	20
	21	You should have received a copy of the GNU General Public License and
	22	a copy of the GCC Runtime Library Exception along with this program;
	23	see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
	24	<http://www.gnu.org/licenses/>. */
	25
	26
	27	/* We use a global lock variable for reductions on objects larger than
	28	64 bits. Until and unless proven that lock contention for
	29	different reduction is a problem, a single lock will suffice. */
	30
	31	unsigned volatile __reduction_lock = 0;