RESOLVED WORKSFORME240440
frequently restyled content can spend significant time recomputing whether text nodes are entirely HTML space characters 
https://bugs.webkit.org/show_bug.cgi?id=240440
Summary frequently restyled content can spend significant time recomputing whether te...
Cameron McCormack (:heycam)
Reported 2022-05-15 18:35:17 PDT
In the MotionMark Design subtest, we spend 1% of Web content process time in isAllSpecialCharacters<isHTMLSpace> under TreeResolver::resolveComposedTree. This is because the cloned <table> elements that are used for the text trails have all white space text nodes between tags, and we end up looking through all those text node characters. We can cache the result in a node flag to avoid this.
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Radar WebKit Bug Importer
Comment 1 2022-05-15 18:35:25 PDT
<rdar://problem/93319600>
Cameron McCormack (:heycam)
Comment 2 2023-05-29 19:57:41 PDT
Closing this as unneeded for now.
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