[FFmpeg-devel] [PATCH] NEON add_signed_pixels_clamped

[Måns Rullgård]

David Conrad <lessen42 at gmail.com> writes:

> Hi,
>
> 3% overall wmv3 decoding speedup.
>
> Also, is it possible to have something like
>
> .macro reg=2
> d\(\reg*2)
>
> evaluate to d4? Or any other ideas to put the repeated sections in a
> macro that isn't ugly?

I don't think there is a simple way, but read on.

The attached version is 1 cycle faster on Cortex-A8, 5 cycles faster
on A9.  Unfortunately it's somewhat more difficult to read than the
original.  That's the price you pay for speed.

-- 
M?ns Rullg?rd
mans at mansr.com
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