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Merge pull request #241 from easyaspi314/clang-rotl

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Use __builtin_rotate on Clang
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Yann Collet 2019-08-10 11:15:52 +02:00 committed by GitHub
commit 67a50241c4
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1 changed files with 8 additions and 1 deletions
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xxhash.c
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@ -231,8 +231,15 @@ static int XXH_isLittleEndian(void)
******************************************/
#define XXH_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
#if !defined(NO_CLANG_BUILTIN) && __has_builtin(__builtin_rotateleft32) && __has_builtin(__builtin_rotateleft64)
# define XXH_rotl32 __builtin_rotateleft32
# define XXH_rotl64 __builtin_rotateleft64
/* Note : although _rotl exists for minGW (GCC under windows), performance seems poor */
#if defined(_MSC_VER)
#elif defined(_MSC_VER)
# define XXH_rotl32(x,r) _rotl(x,r)
# define XXH_rotl64(x,r) _rotl64(x,r)
#else