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librhash: Use __builtin_bswap{32,64} on Clang

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This commit is contained in:
Brad King 2016-11-08 11:32:02 -05:00
parent af7ebf8ad3
commit 7189d62c32
1 changed files with 8 additions and 0 deletions
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8
Utilities/cmlibrhash/librhash/byte_order.h
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@ -85,6 +85,10 @@ void rhash_swap_copy_str_to_u64(void* to, int index, const void* from, size_t le
void rhash_swap_copy_u64_to_str(void* to, const void* from, size_t length);
void rhash_u32_mem_swap(unsigned *p, int length_in_u32);
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
/* define bswap_32 */
#if defined(__GNUC__) && defined(CPU_IA32) && !defined(__i386__)
/* for intel x86 CPU */
@ -95,6 +99,8 @@ static inline uint32_t bswap_32(uint32_t x) {
#elif defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
/* for GCC >= 4.3 */
# define bswap_32(x) __builtin_bswap32(x)
#elif defined(__clang__) && __has_builtin(__builtin_bswap32)
# define bswap_32(x) __builtin_bswap32(x)
#elif (_MSC_VER > 1300) && (defined(CPU_IA32) || defined(CPU_X64)) /* MS VC */
# define bswap_32(x) _byteswap_ulong((unsigned long)x)
#elif !defined(__STRICT_ANSI__)
@ -110,6 +116,8 @@ static inline uint32_t bswap_32(uint32_t x) {
#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
# define bswap_64(x) __builtin_bswap64(x)
#elif defined(__clang__) && __has_builtin(__builtin_bswap64)
# define bswap_64(x) __builtin_bswap64(x)
#elif (_MSC_VER > 1300) && (defined(CPU_IA32) || defined(CPU_X64)) /* MS VC */
# define bswap_64(x) _byteswap_uint64((__int64)x)
#elif !defined(__STRICT_ANSI__)