[Webkit-unassigned] [Bug 65290] New: DFG speculative JIT does not implement load elimination for GetById

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=65290

           Summary: DFG speculative JIT does not implement load
                    elimination for GetById
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: fpizlo at apple.com


The DFG JIT has most of the information that it needs for performing load elimination on GetById.  Currently it only does load elimination for GetByVal.  It should also do it for GetById, and should take care to handle cases where GetById or PutById might cause a side-effect that invalidates the elimination of the load.

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