[Webkit-unassigned] [Bug 156568] New: Color changes should not invalidate collapsed border cache

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=156568

            Bug ID: 156568
           Summary: Color changes should not invalidate collapsed border
                    cache
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tables
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: koivisto at iki.fi

RenderTable::invalidateCollapsedBorders() traverses all cells. This can lead to O(n^2) during style recalc. Mitigate by avoiding unnecessary traversal when nothing that matters changes.

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