[Webkit-unassigned] [Bug 67694] New: Value profling and execution count profiling is performed even for code that cannot be optimized

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=67694

           Summary: Value profling and execution count profiling is
                    performed even for code that cannot be optimized
           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


Value profiling and execution count profiling are necessary for invoking an optimizing compiler when tiered compilation is enabled.  But some code blocks cannot be compiled with an optimizing compiler.  Currently, we still incur the overhead of profiling even though these code blocks will never be optimized.

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