[Webkit-unassigned] [Bug 67460] Add JSVALUE32_64 support to DFG JIT

Wed Sep 21 19:17:25 PDT 2011

https://bugs.webkit.org/show_bug.cgi?id=67460

--- Comment #8 from Yuqiang Xian <yuqiang.xian at intel.com>  2011-09-21 19:17:25 PST ---
Created an attachment (id=108267)
 --> (https://bugs.webkit.org/attachment.cgi?id=108267&action=review)
initial patch for JSVALUE32_64 support in DFG JIT

Hi Gavin,

Glad to know that you're going to enable JSVALUE32_64 support in DFG JIT for 32-bit platforms. Yes we're very interested in this and it's exactly what we've been trying to do. Actually now we're heavily debugging our code and I was thinking to release the code for your reviews after it gets mature enough. But since you're going to work on this I think it would be better to share the initial code with you to have a first glance, though current code has many bugs (known and unknown) and is dirty - for example having some code duplications with the JSVALUE64 code, and some "TODO"s spreaded. It would be great if you can have a look at it and share your comments. Please note that this is not a request for a formal review as it doesn't reach such stage yet. The code is based on revision 95501 (1~2 days behind current trunk).

The code is able to run some benchmark cases in SunSpider, and we really see some improvements on the cases where DFG is truly triggered. The results will be attached later. Currently the 32-bit DFG switch can be turned on/off in the Efl port build.

Thanks a lot. It's really exciting to know that you're also going to do this.

-Yuqiang

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