[Webkit-unassigned] [Bug 146231] New: [CSS Grid Layout] Performance optimization: avoid computing overflow alignment if not needed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146231

            Bug ID: 146231
           Summary: [CSS Grid Layout] Performance optimization: avoid
                    computing overflow alignment if not needed
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jfernandez at igalia.com

We we compute grid item's position, both along column and row axis, we compute overflow even if alignment value is 'start' and there is no need of applying any overflow handling, given that there is no risk of data loss.

Computing overflow adds an unnecessary overhead, so we should remove it to improve performance.

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