[Webkit-unassigned] [Bug 17504] New: Speed up DOM lists array subscription syntax by using the fast getOwnPropertySlot and set paths

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=17504

           Summary: Speed up DOM lists array subscription syntax by using
                    the fast getOwnPropertySlot and set paths
           Product: WebKit
           Version: 525+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore JavaScript
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: sam at webkit.org
                CC: oliver at apple.com


We are needlessly converting from unsigned -> Identifier -> unsigned when doing
indexGetting and setting for DOM lists like the NodeList or the new
CanvasPixelArray.  We can speed it up by using the fast getOwnPropertySlot and
put methods that take an unsigned.  This technique is already employed by
ArrayInstance.


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