Here&#x27;s a bit more modern implementation (using SSE2 registers and instructions), for comparison: <a href="http:&#x2F;&#x2F;golang.org&#x2F;src&#x2F;runtime&#x2F;memmove_amd64.s" rel="nofollow">http:&#x2F;&#x2F;golang.org&#x2F;src&#x2F;runtime&#x2F;memmove_amd64.s</a>