[Webkit-unassigned] [Bug 83666] New: op_is_foo should be optimized

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83666

           Summary: op_is_foo should 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


Currently the op_is_foo opcodes result in C function calls, and the DFG doesn't handle them.

These opcodes should have fast inline assembly code and the DFG should handle them.

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