| 1 | /* Copyright (C) 2009-2015 Free Software Foundation, Inc.
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| 2 |
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| 3 | This file is part of GCC.
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| 4 |
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| 5 | GCC is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 3, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | GCC is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | Under Section 7 of GPL version 3, you are granted additional
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| 16 | permissions described in the GCC Runtime Library Exception, version
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| 17 | 3.1, as published by the Free Software Foundation.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License and
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| 20 | a copy of the GCC Runtime Library Exception along with this program;
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| 21 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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| 22 | <http://www.gnu.org/licenses/>. */
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| 23 |
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| 24 | #if !defined _X86INTRIN_H_INCLUDED && !defined _IMMINTRIN_H_INCLUDED
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| 25 | # error "Never use <lzcntintrin.h> directly; include <x86intrin.h> instead."
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| 26 | #endif
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| 27 |
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| 28 |
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| 29 | #ifndef _LZCNTINTRIN_H_INCLUDED
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| 30 | #define _LZCNTINTRIN_H_INCLUDED
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| 31 |
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| 32 | #ifndef __LZCNT__
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| 33 | #pragma GCC push_options
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| 34 | #pragma GCC target("lzcnt")
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| 35 | #define __DISABLE_LZCNT__
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| 36 | #endif /* __LZCNT__ */
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| 37 |
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| 38 | extern __inline unsigned short __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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| 39 | __lzcnt16 (unsigned short __X)
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| 40 | {
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| 41 | return __builtin_clzs (__X);
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| 42 | }
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| 43 |
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| 44 | extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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| 45 | __lzcnt32 (unsigned int __X)
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| 46 | {
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| 47 | return __builtin_clz (__X);
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| 48 | }
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| 49 |
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| 50 | extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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| 51 | _lzcnt_u32 (unsigned int __X)
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| 52 | {
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| 53 | return __builtin_clz (__X);
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| 54 | }
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| 55 |
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| 56 | #ifdef __x86_64__
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| 57 | extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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| 58 | __lzcnt64 (unsigned long long __X)
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| 59 | {
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| 60 | return __builtin_clzll (__X);
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| 61 | }
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| 62 |
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| 63 | extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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| 64 | _lzcnt_u64 (unsigned long long __X)
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| 65 | {
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| 66 | return __builtin_clzll (__X);
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| 67 | }
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| 68 | #endif
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| 69 |
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| 70 | #ifdef __DISABLE_LZCNT__
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| 71 | #undef __DISABLE_LZCNT__
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| 72 | #pragma GCC pop_options
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| 73 | #endif /* __DISABLE_LZCNT__ */
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| 74 |
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| 75 | #endif /* _LZCNTINTRIN_H_INCLUDED */
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