[Webkit-unassigned] [Bug 181460] REGRESSION(r225650): The scores of MotionMark tests Multiply and Leaves dropped by 8%

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Jan 10 21:09:50 PST 2018


--- Comment #10 from Darin Adler <darin at apple.com> ---
Comment on attachment 330906
  --> https://bugs.webkit.org/attachment.cgi?id=330906

View in context: https://bugs.webkit.org/attachment.cgi?id=330906&action=review

>> Source/WebCore/css/parser/CSSParser.cpp:81
>> +    , hasDocumentSecurityOrigin(document.baseURL() == baseURL || document.securityOrigin().canRequest(baseURL))
> Can this tweak be made in canRequest to make it fast instead?
> But also, I'm actually not sure if identical base URL is good enough for not having a security boundary, between origins in this case.

As for the first question, maybe there is some other way to make a fast path, but we can’t make this exact optimization because canRequest does not have access to the document’s baseURL.

For the second question, I suggest we work together to turn your uncertainty into a test case.

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