diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/zix/digest.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/zix/digest.c b/src/zix/digest.c index 2ac1715..03a1210 100644 --- a/src/zix/digest.c +++ b/src/zix/digest.c @@ -38,6 +38,7 @@ zix_digest_add(uint32_t hash, const void* const buf, const size_t len) { const uint8_t* str = (const uint8_t*)buf; +#ifdef __x86_64__ for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { hash = (uint32_t)_mm_crc32_u64(hash, *(const uint64_t*)str); str += sizeof(uint64_t); @@ -46,6 +47,12 @@ zix_digest_add(uint32_t hash, const void* const buf, const size_t len) hash = _mm_crc32_u32(hash, *(const uint32_t*)str); str += sizeof(uint32_t); } +#else + for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { + hash = _mm_crc32_u32(hash, *(const uint32_t*)str); + str += sizeof(uint32_t); + } +#endif if (len & sizeof(uint16_t)) { hash = _mm_crc32_u16(hash, *(const uint16_t*)str); str += sizeof(uint16_t); @@ -63,6 +70,7 @@ zix_digest_add_64(uint32_t hash, const void* const buf, const size_t len) assert((uintptr_t)buf % sizeof(uint64_t) == 0); assert(len % sizeof(uint64_t) == 0); +#ifdef __x86_64__ const uint64_t* ptr = (const uint64_t*)buf; for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { @@ -71,12 +79,22 @@ zix_digest_add_64(uint32_t hash, const void* const buf, const size_t len) } return hash; +#else + const uint32_t* ptr = (const uint32_t*)buf; + + for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { + hash = _mm_crc32_u32(hash, *ptr); + ++ptr; + } + + return hash; +#endif } uint32_t zix_digest_add_ptr(const uint32_t hash, const void* const ptr) { -#if UINTPTR_MAX == UINT64_MAX +#ifdef __x86_64__ return (uint32_t)_mm_crc32_u64(hash, (uintptr_t)ptr); #else return _mm_crc32_u32(hash, (uintptr_t)ptr); |