diff options
Diffstat (limited to 'sysdeps/s390/fpu/math-barriers.h')
| -rw-r--r-- | sysdeps/s390/fpu/math-barriers.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/s390/fpu/math-barriers.h b/sysdeps/s390/fpu/math-barriers.h new file mode 100644 index 0000000..7c3e6b1 --- /dev/null +++ b/sysdeps/s390/fpu/math-barriers.h @@ -0,0 +1,46 @@ +/* Control when floating-point expressions are evaluated. s390 version. + Copyright (C) 2019 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef S390_MATH_BARRIERS_H +#define S390_MATH_BARRIERS_H 1 + +#ifdef HAVE_S390_VX_GCC_SUPPORT +# define ASM_CONSTRAINT_VR "v" +#else +# define ASM_CONSTRAINT_VR +#endif + +#define math_opt_barrier(x) \ + ({ __typeof (x) __x = (x); \ + if (__builtin_types_compatible_p (__typeof (x), _Float128)) \ + __asm__ ("# math_opt_barrier_f128 %0" : "+fm" (__x)); \ + else \ + __asm__ ("# math_opt_barrier %0" \ + : "+f" ASM_CONSTRAINT_VR "m" (__x)); \ + __x; }) +#define math_force_eval(x) \ + ({ __typeof (x) __x = (x); \ + if (__builtin_types_compatible_p (__typeof (x), _Float128)) \ + __asm__ __volatile__ ("# math_force_eval_f128 %0" \ + : : "fm" (__x)); \ + else \ + __asm__ __volatile__ ("# math_force_eval %0" \ + : : "f" ASM_CONSTRAINT_VR "m" (__x)); \ + }) + +#endif |