[Pixman] [PATCH 0/4] ARM: NEON: Pipelined bilinear scanline functions

[Taekyun Kim]

I update this in my branch
http://cgit.freedesktop.org/~podain/pixman/?h=neon_bilinear 
<http://cgit.freedesktop.org/%7Epodain/pixman/?h=neon_bilinear>

Fixed cache preload of src scanlines to work correctly and added cache 
preload
for mask and dst scanlines. Some mistakes in comments are corrected.

Thanks,
Taekyun Kim

On 09/21/2011 05:38 PM, Taekyun Kim wrote:
> From: Taekyun Kim<tkq.kim at samsung.com>
>
> Hi, all
>
> Bilinear functions in pixman-arm-neon-asm-bilinear.S have lots of room
> for improvement. With some clean-up to bring tail/head scheme for them
> and did instruction scheduling for mostly used over_8888_8888. Passed
> make check.
>
> I'm not sure that the scheduling is done nicely, but at least I've got
> speed up on both cortex-a8 and a9 devices.
>
> Performance of before/after on cortex-a8 @ 1GHz
>
> <<  2000 x 2000 with scale factor close to 1.x>>
> before : 39.71 Mpix/s
> after  : 60.39 Mpix/s
>
> Performance of before/after on cortex-a9 @ 1.2GHz
>
> <<  2000 x 2000 with scale factor close to 1.x>>
> before : 43.31 Mpix/s
> after  : 65.83 Mpix/s
>
> I will do optimization of other functions too based on the perfstat
> results of popular cairo traces.
>
> --
> Best Regards,
> Taekyun Kim
>
> Taekyun Kim (4):
>    ARM: NEON: Some cleanup of bilinear scanline functions
>    ARM: NEON: Bilinear macro template for instruction scheduling
>    ARM: NEON: Replace old bilinear scanline generator with new template
>    ARM: NEON: Instruction scheduling of bilinear over_8888_8888
>
>   pixman/pixman-arm-neon-asm-bilinear.S |  766 ++++++++++++++++++++++++++-------
>   1 files changed, 605 insertions(+), 161 deletions(-)
>

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