Re: [webkit-dev] recompilation in dfg

2012-10-12 Thread Filip Pizlo
Two bad things could have happened: 1) OSR entry failed. That's rare. You could try to put some logging in prepareOSREntry. 2) The GC decided that it didn't want to keep your code around anymore. We have heuristics for doing this even if your code doesn't OSR exit, and even when the owning

Re: [webkit-dev] recompilation in dfg

2012-10-12 Thread Maciej Stachowiak
The best way to find out would be to file a bug at http://bugs.webkit.org/ with a test case demonstrating the problem. - Maciej On Oct 12, 2012, at 6:26 PM, Blake Fiddler wrote: > Hi. > I have some example in which my function recompiling in dfg jit (it's parsing > in second time without OS

[webkit-dev] recompilation in dfg

2012-10-12 Thread Blake Fiddler
Hi. I have some example in which my function recompiling in dfg jit (it's parsing in second time without OSR exits). Can you explain me why that happens and in which cases? Regards, Blake. ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://li

Re: [webkit-dev] HbbTV support within Webkit

2012-10-12 Thread Randall Bennett
On Thu, Oct 11, 2012 at 12:16 PM, Maciej Stachowiak wrote: > > On Oct 11, 2012, at 7:40 AM, Mark Toller wrote: > > >> -Original Message- > >> From: Dominik Röttsches [mailto:dominik.rottsc...@intel.com] > >> > >> On 10/10/2012 10:26 AM, Mark Toller wrote: > >>> What we would like to see

Re: [webkit-dev] Unprefixing requestAnimationFrame

2012-10-12 Thread Dean Jackson
Me too. Please don't just remove the prefix - we need a period of time where we support both prefixed and unprefixed. Dean On 12/10/2012, at 6:58 PM, Maciej Stachowiak wrote: > > I agree with this position as well. It seems good to have a transition period > and to gather some data. > > -

Re: [webkit-dev] x32 support of JavaScriptCore

2012-10-12 Thread Xian, Yuqiang
Thank you Gavin. I have created a bug entry and proposed a patch for MacroAssembler refactoring at https://bugs.webkit.org/show_bug.cgi?id=99154. Also, a bug entry is created to trace the x32 support of JavaScriptCore at https://bugs.webkit.org/show_bug.cgi?id=99153. There you could also find h

[webkit-dev] Fwd: Transformations precision: double -> float

2012-10-12 Thread Tom Hudson
(again from corrected account) Originally To: Gabor Rapcsanyi , CC: Mike Reed Do you have particular bottleneck functions that you have reason to believe would benefit from ARM SIMD optimizations? Under what workloads, and how much benefit? We've see a few ridiculously expensive transform func

Re: [webkit-dev] Transformations precision: double -> float

2012-10-12 Thread Gabor Rapcsanyi
Yes I agree that we need to do some measures to see the benefits of floats. But it's not just about the performance and memory gain of the floats, I would like to make ARM SIMD optimizations for the transformation functions to fasten up them, but ARM NEON technology only works with floats that'

Re: [webkit-dev] Unprefixing requestAnimationFrame

2012-10-12 Thread Maciej Stachowiak
I agree with this position as well. It seems good to have a transition period and to gather some data. - Maciej On Oct 11, 2012, at 9:59 PM, Darin Fisher wrote: > I agree with what Adam wrote in > https://bugs.webkit.org/show_bug.cgi?id=99116#c5. Even if a lot of sites > will magically fa