[haiku-development] Re: WebKit SSE2 requirement
- From: François Revol <revol@xxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Thu, 02 Oct 2014 01:49:10 +0200
On 01/10/2014 20:52, pulkomandy wrote:
> Hello,
>
> The JavaScript interpreter in WebKit has started to make use of SSE2
> features. For the previous releases, we advertised support for "i586"
> machines, which means SSE and SSE2 was not to be used, or detected at
> runtime.
>
> If we want to keep this low compatibility requirement, I will have to
> switch our WebKit port to the plain C code version of the JavaScript
> interpreter. This also means we lose the JIT capabilities, which will
> result in a slower web browsing experience. This can only be switched at
> compile time.
>
> What should we do? Increase our requirements to need a CPU with SSE2 for
> the syste as a whole? Only for the web browser? Remove the JIT? Provide
> two versions of HaikuWebKit with different JavaScriptCore engines?
>
> I'd like to avoid the last option, which adds more work than seems
> reasonable (haikuwebkit would need to be built 5 times to support all
> our architectures: gcc2hybrid with and wouthout sse2, x86 with and
> without sse2, and x86_64).
>
> SSE2 was introduced with the Pentium 4 at Intel, and Athlon64 at AMD. So
> Pentium III, Athlon XP and anything older would be left out.
That's painful, I happen to have an Athlon XP here...
Why don't they just autodetect it and have wrappers ?
François.
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