/* 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