2020-04-01 SSE4.2 #include #include

#ifndef __SSE4_2__
#pragma GCC push_options
#pragma GCC target("sse4.2")
#define __DISABLE_SSE4_2__
#endif /* __SSE4_1__ */

/* Accumulate CRC32 (polynomial 0x11EDC6F41) value.  */
extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_crc32_u8 (unsigned int __C, unsigned char __V)
{
  return __builtin_ia32_crc32qi (__C, __V);
}

extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_crc32_u16 (unsigned int __C, unsigned short __V)
{
  return __builtin_ia32_crc32hi (__C, __V);
}

extern __inline unsigned int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_crc32_u32 (unsigned int __C, unsigned int __V)
{
  return __builtin_ia32_crc32si (__C, __V);
}

#ifdef __x86_64__
extern __inline unsigned long long __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm_crc32_u64 (unsigned long long __C, unsigned long long __V)
{
  return __builtin_ia32_crc32di (__C, __V);
}
#endif

#ifdef __DISABLE_SSE4_2__
#undef __DISABLE_SSE4_2__
#pragma GCC pop_options
#endif /* __DISABLE_SSE4_2__ */