[Webkit-unassigned] [Bug 99118] JSC Should atomize constant strings before handing them to WebCore
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Oct 12 13:00:23 PDT 2012
https://bugs.webkit.org/show_bug.cgi?id=99118
--- Comment #7 from Eric Seidel <eric at webkit.org> 2012-10-12 13:01:06 PST ---
I'm not sure I was clear above. JSC hands WebCore the same StringImpl for constants, every time. But unfortunately that StringImpl is not marked isAtomic(), so when WebCore needs an AtomicString, it does a hash-lookup from the StringImpl provided by JSC, to find the corresponding "Atomic" StringImpl in WebCore. That hash lookup is slow, and ideally would be avoided by having a faster way to map from JSC constants to AtomicStrings. :)
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