[webkit-dev] Anyone using NEON code on ARM builds?

Dean Jackson dino at apple.com
Tue Mar 20 11:00:21 PDT 2012

Hi Jonathan,

On 21/03/2012, at 12:56 AM, Jonathan Kliegman wrote:

> On Wed, Mar 14, 2012 at 2:14 PM, Dean Jackson <dino at apple.com> wrote:
> Hi,
> There are three files with embedded NEON code to speed up filters:
> ./Source/WebCore/platform/graphics/filters/arm/FECompositeArithmeticNEON.{h,cpp}
> ./Source/WebCore/platform/graphics/filters/arm/FEGaussianBlurNEON.{h,cpp}
> ./Source/WebCore/platform/graphics/filters/arm/FELightingNEON.{h,cpp}
> Are any ARM ports using this? (would require SVG and FILTERS both enabled) If so, could you contact me? Off list is fine.
> I see the code came from Felician Marton via Zoltan reviewed by Dirk (eg. https://bugs.webkit.org/show_bug.cgi?id=65522) and it's been very slightly touched for some chromium build issues.
> Chrome OS has ports that use NEON and has SVG and FILTERS both enabled so this would still be used.


Zoltan and I have been chatting offline a bit. I was testing compilation on Darwin/iOS ARM and running into a few issues. The first was about alignment errors from the compiler. The second was some linking issues, for example:

> https://bugs.webkit.org/show_bug.cgi?id=81568

Is there someone (you?) on the Chrome team I should CC on any bugs raises?


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