| /* Copyright (C) 2009-2015 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC 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 General Public License for more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #if !defined _X86INTRIN_H_INCLUDED && !defined _IMMINTRIN_H_INCLUDED |
| # error "Never use <lzcntintrin.h> directly; include <x86intrin.h> instead." |
| #endif |
| |
| |
| #ifndef _LZCNTINTRIN_H_INCLUDED |
| #define _LZCNTINTRIN_H_INCLUDED |
| |
| #ifndef __LZCNT__ |
| #pragma GCC push_options |
| #pragma GCC target("lzcnt") |
| #define __DISABLE_LZCNT__ |
| #endif /* __LZCNT__ */ |
| |
| extern __inline unsigned short __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
| __lzcnt16 (unsigned short __X) |
| { |
| return __builtin_clzs (__X); |
| } |
| |
| extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
| __lzcnt32 (unsigned int __X) |
| { |
| return __builtin_clz (__X); |
| } |
| |
| extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
| _lzcnt_u32 (unsigned int __X) |
| { |
| return __builtin_clz (__X); |
| } |
| |
| #ifdef __x86_64__ |
| extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
| __lzcnt64 (unsigned long long __X) |
| { |
| return __builtin_clzll (__X); |
| } |
| |
| extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
| _lzcnt_u64 (unsigned long long __X) |
| { |
| return __builtin_clzll (__X); |
| } |
| #endif |
| |
| #ifdef __DISABLE_LZCNT__ |
| #undef __DISABLE_LZCNT__ |
| #pragma GCC pop_options |
| #endif /* __DISABLE_LZCNT__ */ |
| |
| #endif /* _LZCNTINTRIN_H_INCLUDED */ |