[Mplayer-users] [mplayer PATCH] SSE fastmemcpy improvements
nickols_k at mail.ru
Fri Apr 20 19:14:40 CEST 2001
I want to suggest you a patch which improves SSE related part of fastmemcpy.
After studing Intel manuals I don't understand one thing:
Can we suppose that data is temporary aligned after executing PREFETCH instruction or not?
IMHO, probably - yes.
May be you'll test it on your CeleronII?
For it please remove block with MOVUPS insns and try to compile my test program which was sent by me
yestoday. If GPF is not occured then, compare benchmarks of MOVUPS and MOVAPS blocks separately.
Ayway, this patch probably fully workable, but it required to be tested on your CeleronII.
In attach is full code of fatsmemcpy.h.
Best regards! Nick
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