[Webkit-unassigned] [Bug 63669] New: DFG JIT - fix spectral-norm regression

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63669

           Summary: DFG JIT - fix spectral-norm regression
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: barraclough at apple.com


The problem is a mis-speculation leading to us falling off the speculative path.  Make the speculation logic slightly smarter, don't predict int if one of the operands is already loaded as a double (we use this logic already for compares).

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