[Webkit-unassigned] [Bug 65901] New: The JSC JIT currently has not facility to profile and report the types of values

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=65901

           Summary: The JSC JIT currently has not facility to profile and
                    report the types of values
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: fpizlo at apple.com


Much of the effort of tuning the DFG involves trying to figure out what types to predict.  But we have no easy way of profiling or reporting the types seen by expressions in programs.

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