[XviD-devel] recent mmx patch (xvid_bench results)

[Edouard Gomez]

pete (p_ross at iprimus.com.au) wrote:
> it appears mmx 8to16sub is buggy.

fine you found which one is buggy.

> PLAINC - 8to16sub  1.178 usec       crc32(1)=0xa1e07163 crc32(2)=0xd86c5d23
> MMX    - 8to16sub  0.052 usec       crc32(1)=0xa1e07163 crc32(2)=0xd86c5d23
> 3DNOW  - 8to16sub  0.975 usec       crc32(1)=0xa1e07163 crc32(2)=0xd86c5d23

Hmmm how the hell does it pass the xvid_bench test ?!
/me angry. A crc should spot that kind of things.

> PLAINC - dequant_h263_inter 98.984 usec       crc32=0xe7df8fba
> <crash>

Hu? dunno what  can be the cause of that, no  changes happened there.  I
still don't  understand why my 5  sequence test did not  show so serious
troubles, moreover the  sequence has been tested 3  times, and each time
the output was bit to bit matching...

I'll have a look this evening.

-- 
Edouard Gomez