1  /* Copyright (C) 2009-2023 Free Software Foundation, Inc.
       2  
       3     This file is part of GCC.
       4  
       5     GCC is free software; you can redistribute it and/or modify
       6     it under the terms of the GNU General Public License as published by
       7     the Free Software Foundation; either version 3, or (at your option)
       8     any later version.
       9  
      10     GCC 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
      13     GNU General Public License for more details.
      14  
      15     Under Section 7 of GPL version 3, you are granted additional
      16     permissions described in the GCC Runtime Library Exception, version
      17     3.1, as published by the Free Software Foundation.
      18  
      19     You should have received a copy of the GNU General Public License and
      20     a copy of the GCC Runtime Library Exception along with this program;
      21     see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      22     <http://www.gnu.org/licenses/>.  */
      23  
      24  #ifndef _POPCNTINTRIN_H_INCLUDED
      25  #define _POPCNTINTRIN_H_INCLUDED
      26  
      27  #ifndef __POPCNT__
      28  #pragma GCC push_options
      29  #pragma GCC target("popcnt")
      30  #define __DISABLE_POPCNT__
      31  #endif /* __POPCNT__ */
      32  
      33  /* Calculate a number of bits set to 1.  */
      34  extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      35  _mm_popcnt_u32 (unsigned int __X)
      36  {
      37    return __builtin_popcount (__X);
      38  }
      39  
      40  #ifdef __x86_64__
      41  extern __inline long long  __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      42  _mm_popcnt_u64 (unsigned long long __X)
      43  {
      44    return __builtin_popcountll (__X);
      45  }
      46  #endif
      47  
      48  #ifdef __DISABLE_POPCNT__
      49  #undef __DISABLE_POPCNT__
      50  #pragma GCC pop_options
      51  #endif  /* __DISABLE_POPCNT__ */
      52  
      53  #endif /* _POPCNTINTRIN_H_INCLUDED */