[Webkit-unassigned] [Bug 56770] Speed up HitTestResult

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=56770





--- Comment #17 from Geoff Pike <gpike at chromium.org>  2011-03-22 23:11:20 PST ---
The savings per HitTestResult object is say 1400 cycles plus a bit more for the destructor. Call it .5 to 1 us.

If you start Chrome and rapidly click links for 20 seconds and quit, several thousand HitTestResult objects are created and destroyed per second. That suggests a realistic peak savings of a few CPU ms per second when the mouse is moving. Of course, most of the time it's not. Even so, it's not that ugly a change for the benefit it provides.

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