[Webkit-unassigned] [Bug 67677] New: cachedOffset optimization is disabled after r93837

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=67677

           Summary: cachedOffset optimization is disabled after r93837
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org
                CC: jamesr at chromium.org


I perf-tested a previous patch (which prompted the importance of passing the argument to computeRepaintRect) but the patch that landed disabled the optimization!

This mistake basically re-introduce a O(n^2) in updateLayerPositions that the optimization was preventing.

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