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 _X86GPRINTRIN_H_INCLUDED
      25  # error "Never use <lzcntintrin.h> directly; include <x86gprintrin.h> instead."
      26  #endif
      27  
      28  
      29  #ifndef _LZCNTINTRIN_H_INCLUDED
      30  #define _LZCNTINTRIN_H_INCLUDED
      31  
      32  #ifndef __LZCNT__
      33  #pragma GCC push_options
      34  #pragma GCC target("lzcnt")
      35  #define __DISABLE_LZCNT__
      36  #endif /* __LZCNT__ */
      37  
      38  extern __inline unsigned short __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      39  __lzcnt16 (unsigned short __X)
      40  {
      41    return __builtin_ia32_lzcnt_u16 (__X);
      42  }
      43  
      44  extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      45  __lzcnt32 (unsigned int __X)
      46  {
      47    return __builtin_ia32_lzcnt_u32 (__X);
      48  }
      49  
      50  extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      51  _lzcnt_u32 (unsigned int __X)
      52  {
      53    return __builtin_ia32_lzcnt_u32 (__X);
      54  }
      55  
      56  #ifdef __x86_64__
      57  extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      58  __lzcnt64 (unsigned long long __X)
      59  {
      60    return __builtin_ia32_lzcnt_u64 (__X);
      61  }
      62  
      63  extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__))
      64  _lzcnt_u64 (unsigned long long __X)
      65  {
      66    return __builtin_ia32_lzcnt_u64 (__X);
      67  }
      68  #endif
      69  
      70  #ifdef __DISABLE_LZCNT__
      71  #undef __DISABLE_LZCNT__
      72  #pragma GCC pop_options
      73  #endif /* __DISABLE_LZCNT__ */
      74  
      75  #endif /* _LZCNTINTRIN_H_INCLUDED */