[webkit-reviews] review requested: [Bug 13021] XPath can be very slow : [Attachment 13578] partial fix 1

[bugzilla-request-daemon at macosforge.org]

Alexey Proskuryakov <ap at webkit.org> has asked  for review:
Bug 13021: XPath can be very slow
http://bugs.webkit.org/show_bug.cgi?id=13021

Attachment 13578: partial fix 1
http://bugs.webkit.org/attachment.cgi?id=13578&action=edit

------- Additional Comments from Alexey Proskuryakov <ap at webkit.org>
I'm still not sure what the main culprit is (the DOM modification events do not
seem to be a huge contributor, according to Shark), but this patch improves the
performance a bit. The results are very inconsistent, though - sometimes I
measure a 10% improvement, other times, a slowdown :-/