RESOLVED FIXED 251413
move SVG conditional processing attributes to SVGElementRareData 
https://bugs.webkit.org/show_bug.cgi?id=251413
Summary move SVG conditional processing attributes to SVGElementRareData
Cameron McCormack (:heycam)
Reported 2023-01-30 19:51:40 PST
The SVG conditional processing attributes (requiredFeatures, requiredExtensions, and systemLanguage) are rarely used. Currently nearly every SVG element creates SVGStringList objects for these three attributes in WebCore::SVGTests, at a cost of 48 bytes each SVGStringList plus the three pointers. We can move these to SVGElementRareData to save 72 bytes per SVG element in this common case, which for SVG documents with a large number of graphical elements can add up.
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Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2023-01-30 19:52:05 PST
<rdar://problem/104849618>
Cameron McCormack (:heycam)
Comment 2 2023-01-30 20:48:27 PST
Pull request: https://github.com/WebKit/WebKit/pull/9366
EWS
Comment 3 2023-02-02 12:04:48 PST
Committed 259772@main (a0e6d8e81896): <https://commits.webkit.org/259772@main> Reviewed commits have been landed. Closing PR #9366 and removing active labels.
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