[Webkit-unassigned] [Bug 38557] r58526 introduced a ~30% regression on Dromaeo JS lib

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=38557





--- Comment #19 from anton muhin <antonm at chromium.org>  2010-05-07 12:17:54 PST ---
(In reply to comment #18)
> Created an attachment (id=55404)
 --> (https://bugs.webkit.org/attachment.cgi?id=55404) [details]
> Next patch: faster emptyValue

This patch restores notable amount of score for me---this is all due to faster
emptyValue (thanks to Sam's investigation).  Would appreciate if anyone else
checks if it helps on their box.  So the main suspect for now would be
iteration over cached node lists.  I am going to use
NodeListsNodeData::m_listsWithCaches to see if it'll help.

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