NEW 75257
XMLDocumentParser needs a PreloadScanner 
https://bugs.webkit.org/show_bug.cgi?id=75257
Summary XMLDocumentParser needs a PreloadScanner
Tony Gentilcore
Reported 2011-12-27 09:20:41 PST
The XMLDocumentParser doesn't use the PreloadScanner like the HTMLDocumentParser does. In cases like the one described in http://crbug.com/108592 , this leads to very poor performance. This is also mentioned in http://gent.ilcore.com/2011/01/webkit-preloadscanner.html . I thought we had a bug about this, but can't find it. Please dupe this one if you remember where that is.
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Tony Gentilcore
Comment 1 2011-12-27 09:23:26 PST
I seem to also recall abarth asking why we need to pause the parser at all for scripts in XHTML documents (since there is no doc.write). We should probably investigate that further first.
Adam Barth
Comment 2 2011-12-27 10:02:40 PST
Note that preload scanning XML is much easier because we know exactly how the whole document will parse (e.g. there is no document.write).
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