On Wed, Jul 20, 2011 at 3:29 PM, <mattst88 at gmail.com> wrote: > + memcpy(d, s, w); I'm not sure if this change should be made, or whether I should do like the other two hunks and only emit movq instructions for #if defined USE_MMX. memcpy should be optimized in libc, or perhaps the C compiler itself, so. Matt