[Webkit-unassigned] [Bug 71977] New: DFG should not reparse code that was just parsed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71977

           Summary: DFG should not reparse code that was just parsed
           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


The DFG will currently redo parsing on an executable when that executable had just been parsed by the old JIT.  It will also repeatedly reparse code that is inlined multiple times.  This is likely not particularly great for performance.

This is an umbrella bug for now, since there are a number of independent things that need to be fixed.

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