[Webkit-unassigned] [Bug 68215] New: DFG JIT does not optimize method_check

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=68215

           Summary: DFG JIT does not optimize method_check
           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 JIT emits a lot of code for method_check even though it has a plethora of profiling information that it could use (both from the meta-data in MethodCallLinkInfo and ValueProfile's) to determine how to optimize method_check down to a small number of instructions.

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