sdk/build-tools/26.0.0/renderscript/clang-include/lzcntintrin.h

   1 /*===---- lzcntintrin.h - LZCNT intrinsics ---------------------------------===
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy
   4  * of this software and associated documentation files (the "Software"), to deal
   5  * in the Software without restriction, including without limitation the rights
   6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7  * copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in
  11  * all copies or substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19  * THE SOFTWARE.
  20  *
  21  *===-----------------------------------------------------------------------===
  22  */
  23
  24 #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H
  25 #error "Never use <lzcntintrin.h> directly; include <x86intrin.h> instead."
  26 #endif
  27
  28 #ifndef __LZCNTINTRIN_H
  29 #define __LZCNTINTRIN_H
  30
  31 /* Define the default attributes for the functions in this file. */
  32 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lzcnt")))
  33
  34 static __inline__ unsigned short __DEFAULT_FN_ATTRS
  35 __lzcnt16(unsigned short __X)
  36 {
  37   return __X ? __builtin_clzs(__X) : 16;
  38 }
  39
  40 static __inline__ unsigned int __DEFAULT_FN_ATTRS
  41 __lzcnt32(unsigned int __X)
  42 {
  43   return __X ? __builtin_clz(__X) : 32;
  44 }
  45
  46 static __inline__ unsigned int __DEFAULT_FN_ATTRS
  47 _lzcnt_u32(unsigned int __X)
  48 {
  49   return __X ? __builtin_clz(__X) : 32;
  50 }
  51
  52 #ifdef __x86_64__
  53 static __inline__ unsigned long long __DEFAULT_FN_ATTRS
  54 __lzcnt64(unsigned long long __X)
  55 {
  56   return __X ? __builtin_clzll(__X) : 64;
  57 }
  58
  59 static __inline__ unsigned long long __DEFAULT_FN_ATTRS
  60 _lzcnt_u64(unsigned long long __X)
  61 {
  62   return __X ? __builtin_clzll(__X) : 64;
  63 }
  64 #endif
  65
  66 #undef __DEFAULT_FN_ATTRS
  67
  68 #endif /* __LZCNTINTRIN_H */