[webkit-gtk] [jsc-dev] Enable WebAssembly on Linux based ports (GTK and JSCOnly)

Andrea Giammarchi andrea.giammarchi at gmail.com
Wed Mar 1 09:55:04 PST 2017


> AFAIU Zero is based on 32-bit ARM, and WASM requires B3 that is 64-bit
only.

performance for the already performant, seems legit :D

I didn't know this precious detail, thanks a lot for the info!

Never mind my previous email.

Best Regards

On Wed, Mar 1, 2017 at 5:16 PM, Konstantin Tokarev <annulen at yandex.ru>
wrote:

>
>
> 01.03.2017, 20:10, "Andrea Giammarchi" <andrea.giammarchi at gmail.com>:
> > Chiming in, it'd be awesome to be able to test WASM on 2.16 behind a
> flag, I'm targeting mostly SBC including Raspberry Pi 0 where WebKitGTK+
> already works like a charm (enabling WebGL and with HW accelerated layers)
> but I can't compare performance against WASM and building from scratch
> targeting Pi Zero ain't the easiest thing to do.
>
> AFAIU Zero is based on 32-bit ARM, and WASM requires B3 that is 64-bit
> only.
>
> >
> > Thanks for eventual consideration.
> >
> > On Wed, Mar 1, 2017 at 4:57 PM, Yusuke SUZUKI <utatane.tea at gmail.com>
> wrote:
> >> On Thu, Mar 2, 2017 at 1:36 AM, Saam Barati <sbarati at apple.com> wrote:
> >>> On Mar 1, 2017, at 7:46 AM, Michael Catanzaro <mcatanzaro at igalia.com>
> wrote:
> >>>
> >>>> On Wed, 2017-03-01 at 15:44 +0100, Carlos Garcia Campos wrote:
> >>>> We have recently branched for 2.16 so it's a perfect moment to enable
> >>>> it in trunk with very little risk.
> >>>>
> >>>> Is Apple planning to enable it within the next six months? If so, now
> >>>> is indeed the ideal time to enable it for WebKitGTK+.
> >>>
> >>> What do you mean by enable it? It's been on by default on the Mac port
> for a while now and has been in the various STP releases.
> >>>
> >>> I think it's a good idea to enable it on other ports too. Note that
> Keith is currently working on a patch to make loads faster in Wasm. It may
> require some OS specific handling to run well on Linux:
> https://bugs.webkit.org/show_bug.cgi?id=162693
> >>
> >> Awesome! I think enabling WASM on Linux after landing Keith's faster
> memory access patch (by using SEGV signal handling instead of bound
> checking) is good.
> >> Once that patch is implemented and landed, we can start implementing
> platform-specific part of that (extracting instruction pointer from
> mcontext_t and signal handling part should be implemented for Linux).
> >> I think that should be easy (since retrieving instruction pointer from
> mcontext_t is already once implemented for sampling profiler. Thus, we can
> share / re-implement the same thing for that).
> >>
> >>>> If not, then I'd prefer to wait until it's going to be enabled in the
> >>>> macOS port.
> >>>>
> >>>> Michael
> >>>> _______________________________________________
> >>>> jsc-dev mailing list
> >>>> jsc-dev at lists.webkit.org
> >>>> https://lists.webkit.org/mailman/listinfo/jsc-dev
> >>
> >> _______________________________________________
> >> webkit-gtk mailing list
> >> webkit-gtk at lists.webkit.org
> >> https://lists.webkit.org/mailman/listinfo/webkit-gtk
> > ,
> >
> > _______________________________________________
> > webkit-gtk mailing list
> > webkit-gtk at lists.webkit.org
> > https://lists.webkit.org/mailman/listinfo/webkit-gtk
>
>
> --
> Regards,
> Konstantin
>
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