[webkit-reviews] review requested: [Bug 45748] Collect the beginning characters in a RegExp pattern for look-up optimization : [Attachment 68094] proposed patch v3

[bugzilla-daemon at webkit.org]

Peter Varga <pvarga at inf.u-szeged.hu> has asked	for review:
Bug 45748: Collect the beginning characters in a RegExp pattern for look-up
optimization
https://bugs.webkit.org/show_bug.cgi?id=45748

Attachment 68094: proposed patch v3
https://bugs.webkit.org/attachment.cgi?id=68094&action=review

------- Additional Comments from Peter Varga <pvarga at inf.u-szeged.hu>
I have attached a new patch for collecting the beginning characters in the
parsing phase.
This modification doesn't collect the character classes therefore the overhead
of the
collecting is even less but the look-up optimization is less efficient as well.


I separately show the new performance results at JIT
(https://bugs.webkit.org/show_bug.cgi?id=45749) and 
Interpreter (https://bugs.webkit.org/show_bug.cgi?id=45751) bugreports.