diff options
Diffstat (limited to '')
| -rw-r--r-- | mysys/crc32/crc32c_amd64.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mysys/crc32/crc32c_amd64.cc b/mysys/crc32/crc32c_amd64.cc index 22c492b4..147c0cca 100644 --- a/mysys/crc32/crc32c_amd64.cc +++ b/mysys/crc32/crc32c_amd64.cc @@ -47,6 +47,11 @@ #include <nmmintrin.h> #include <wmmintrin.h> +#ifdef _MSC_VER +# define USE_PCLMUL /* nothing */ +#else +# define USE_PCLMUL __attribute__((target("sse4.2,pclmul"))) +#endif #define CRCtriplet(crc, buf, offset) \ crc##0 = _mm_crc32_u64(crc##0, *(buf##0 + offset)); \ @@ -131,6 +136,7 @@ static const uint64_t clmul_constants alignas(16) [] = { }; // Compute the crc32c value for buffer smaller than 8 +USE_PCLMUL static inline void align_to_8( size_t len, uint64_t& crc0, // crc so far, updated on return @@ -155,6 +161,7 @@ static inline void align_to_8( // CombineCRC performs pclmulqdq multiplication of 2 partial CRC's and a well // chosen constant and xor's these with the remaining CRC. // +USE_PCLMUL static inline uint64_t CombineCRC( size_t block_size, uint64_t crc0, @@ -176,6 +183,7 @@ static inline uint64_t CombineCRC( // Compute CRC-32C using the Intel hardware instruction. extern "C" +USE_PCLMUL uint32_t crc32c_3way(uint32_t crc, const char *buf, size_t len) { const unsigned char* next = (const unsigned char*)buf; |