[x264-devel] question in pixel_avg2_w20_sse2

[chen]

In pixel_avg2_w20_sse2, it mixed use XMM0-XMM4 and MM4-MM5, so MM4-MM5 was not save and restore.
I check ABI document, it just said Microsoft Compiler didn't use MM0-MM7
Is it a bug?
 
btw: I know the MM_ is double faster then XMM_ in old cpu, but in latest CPU, it is same speed or slower.
 
Min
 
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