[x265] [arm64] port filterPixelToShort

[chen]

The patch looks good, no more modify necessary, thanks.


btw: you didn't see change with CBNZ, I guess two reasons, one is 'sub x9' too is in first part of loop,  I more likely move these independent instruction fill into pipeline stall slots, the second is count of loop is not many enough since this is small function.

At 2021-06-24 10:34:02, "Pop, Sebastian" <spop at amazon.com> wrote:

Also added cbnz, no perf change.

 
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