[Webkit-unassigned] [Bug 190106] Style::determineChange() does a full RenderStyle compare when it needs !=

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190106

--- Comment #2 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
(In reply to Antti Koivisto from comment #1)
> > We should probably implement operator != for the common types, which early
> > returns.
> 
> In case styles are equal operator!= is not usually very deep. It just
> compares a small set of pointers and bits for equality.

Right, but it's the != case where only one or two properties changed that affect benchmark and animated content performance (e.g. things that just change transform).

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