RESOLVED WORKSFORME 80076
Make V8CSSStyleDeclaration work directly with CSS Property ID 
https://bugs.webkit.org/show_bug.cgi?id=80076
Summary Make V8CSSStyleDeclaration work directly with CSS Property ID
Ryosuke Niwa
Reported 2012-03-01 17:47:18 PST
http://trac.webkit.org/changeset/108257 improved DOM/Accessors.html's score by 45%. We should do the same optimization.
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Add attachment proposed patch, testcase, etc.
Erik Arvidsson
Comment 1 2012-03-02 12:24:15 PST
We already do this optimization. cssPropertyInfo caches the lookup from the string to the property ID and whether the property has a pos or pixel prefix.
Kentaro Hara
Comment 2 2012-03-04 21:10:30 PST
(In reply to comment #1) > We already do this optimization. > > cssPropertyInfo caches the lookup from the string to the property ID and whether the property has a pos or pixel prefix. Thanks, arv. I confirmed it. Also I confirmed that the reason why V8's DOM/Accessors.html is still much slower than JSC's DOM/Accessors.html is due to the slowness of V8 DOM bindings. (I am investigating the issue in https://docs.google.com/a/google.com/spreadsheet/ccc?key=0AlobCOyvTnPKdDhqQlpybE11Ui1fbTRHNFd2ZHh4bEE&ndplr=1#gid=0)
Kentaro Hara
Comment 3 2012-03-05 01:55:24 PST
Although I played around some optimization, I couldn't optimize V8CSSStyleDeclaration as far as I modify V8CSSStyleDeclarationCustom.cpp. As a side effect of the investigation, I might be able to optimize JSCSSStyleDeclarationCustom.cpp:-) bug 80250
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