1  /* Control when floating-point expressions are evaluated.  PowerPC version.
       2     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef POWERPC_MATH_BARRIERS_H
      20  #define POWERPC_MATH_BARRIERS_H 1
      21  
      22  /* Avoid putting floating point values in memory.  */
      23  # define math_opt_barrier(x)					\
      24    ({ __typeof (x) __x = (x); __asm ("" : "+dwa" (__x)); __x; })
      25  # define math_force_eval(x)						\
      26    ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "dwa" (__x)); })
      27  
      28  #endif