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Diffstat (limited to 'sysdeps/alpha/fpu/math-barriers.h')
| -rw-r--r-- | sysdeps/alpha/fpu/math-barriers.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sysdeps/alpha/fpu/math-barriers.h b/sysdeps/alpha/fpu/math-barriers.h new file mode 100644 index 0000000000..27a64d789d --- /dev/null +++ b/sysdeps/alpha/fpu/math-barriers.h @@ -0,0 +1,28 @@ +/* Control when floating-point expressions are evaluated. Alpha version. + Copyright (C) 2014-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef ALPHA_MATH_BARRIERS_H +#define ALPHA_MATH_BARRIERS_H 1 + +/* Generic code forces values to memory; we don't need to do that. */ +#define math_opt_barrier(x) \ + ({ __typeof (x) __x = (x); __asm ("" : "+frm" (__x)); __x; }) +#define math_force_eval(x) \ + ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "frm" (__x)); }) + +#endif |