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/* Copyright (C) 2009-2015 Free Software Foundation, Inc. |
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|
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This file is part of GCC. |
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|
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GCC is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3, or (at your option) |
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any later version. |
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|
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GCC is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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Under Section 7 of GPL version 3, you are granted additional |
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permissions described in the GCC Runtime Library Exception, version |
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3.1, as published by the Free Software Foundation. |
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|
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You should have received a copy of the GNU General Public License and |
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a copy of the GCC Runtime Library Exception along with this program; |
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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<http://www.gnu.org/licenses/>. */ |
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|
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#if !defined _X86INTRIN_H_INCLUDED && !defined _IMMINTRIN_H_INCLUDED |
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# error "Never use <lzcntintrin.h> directly; include <x86intrin.h> instead." |
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#endif |
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|
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|
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#ifndef _LZCNTINTRIN_H_INCLUDED |
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#define _LZCNTINTRIN_H_INCLUDED |
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|
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#ifndef __LZCNT__ |
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#pragma GCC push_options |
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#pragma GCC target("lzcnt") |
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#define __DISABLE_LZCNT__ |
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#endif /* __LZCNT__ */ |
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|
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extern __inline unsigned short __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
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__lzcnt16 (unsigned short __X) |
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{ |
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return __builtin_clzs (__X); |
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} |
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|
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extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
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__lzcnt32 (unsigned int __X) |
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{ |
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return __builtin_clz (__X); |
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} |
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|
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extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
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_lzcnt_u32 (unsigned int __X) |
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{ |
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return __builtin_clz (__X); |
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} |
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|
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#ifdef __x86_64__ |
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extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
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__lzcnt64 (unsigned long long __X) |
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{ |
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return __builtin_clzll (__X); |
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} |
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|
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extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
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_lzcnt_u64 (unsigned long long __X) |
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{ |
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return __builtin_clzll (__X); |
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} |
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#endif |
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|
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#ifdef __DISABLE_LZCNT__ |
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#undef __DISABLE_LZCNT__ |
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#pragma GCC pop_options |
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#endif /* __DISABLE_LZCNT__ */ |
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|
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#endif /* _LZCNTINTRIN_H_INCLUDED */ |
