[mythtv] fast_memcpy ???

[Bryan Mayland]

>> Has anybody tried the fast_memcpy routines in Mytthv ?
>
>     I am interested in trying these routines.
>
I looked at different memcpy routines for transcode and found that the 
optimized memcpy presented in AMD's Optimization guide was easily twice 
as fast as the libc version.  I'd be willing to bet that 3-4x would be 
possible on Athlon64s (because it has twice the number of SSE 
registers).  Works on aligned and unaligned data too, so it is a drop in 
replacement.  I've never looked at the renderer implementation in 
MythTV, would this be a worthwhile optimization?