[Webkit-unassigned] [Bug 64039] New: DFG JIT implementation of op_call results in regressions on sunspider controlflow-recursive

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=64039

           Summary: DFG JIT implementation of op_call results in
                    regressions on sunspider controlflow-recursive
           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 op_call implementation causes more code to be compiled by DFG, and is revealing bad speculation decisions, which result in large performance regressions especially on sunspider controlflow-recursive.

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