diff options
| -rw-r--r-- | port/port_posix_sse.cc | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/port/port_posix_sse.cc b/port/port_posix_sse.cc index 1e519ba..08d9aee 100644 --- a/port/port_posix_sse.cc +++ b/port/port_posix_sse.cc @@ -92,8 +92,12 @@ uint32_t AcceleratedCRC32C(uint32_t crc, const char* buf, size_t size) { } while (0) if (size > 16) { - // Process unaligned bytes - for (unsigned int i = reinterpret_cast<uintptr_t>(p) % 8; i; --i) { + // Point x at first 8-byte aligned byte in string. This must be inside the + // string, due to the size check above. + const uintptr_t pval = reinterpret_cast<uintptr_t>(p); + const uint8_t* x = reinterpret_cast<const uint8_t*>(((pval + 7) >> 3) << 3); + // Process bytes until p is 8-byte aligned. + while (p != x) { STEP1; } |