[Webkit-unassigned] [Bug 16738] New: Collector block offset could be stored as an cell offset instead of a byte offset

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=16738

           Summary: Collector block offset could be stored as an cell offset
                    instead of a byte offset
           Product: WebKit
           Version: 525+ (Nightly build)
          Platform: Macintosh
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: hmason at mac.com


Contrary to comments in the code to the contrary, storing the "next" field as a
byte offset rather than a cell offset seems to be hurting performance. Both
shark and timing tests with SunSpider show a small performance gain by
switching to cell offsets. As an added bonus, using cell offsets eliminates a
lot of somewhat ugly casting.


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