[Webkit-unassigned] [Bug 63409] New: DFG JIT does not perform put_by_id caching

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63409

           Summary: DFG JIT does not perform put_by_id caching
           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 main JSC JIT performs extensive caching optimizations for put_by_id.  The DFG JIT currently always emits a call to a helper function, which is implemented in C.  At least the basic put_by_id caching (such as replacement of existing properties) should be ported to DFG.

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