[Webkit-unassigned] [Bug 69500] New: DFG should not enforce speculations on a variable if those speculations are never used

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=69500

           Summary: DFG should not enforce speculations on a variable if
                    those speculations are never used
           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


If we have:

function foo(a,b) { bar(a,b); }

And a and b are predicted integer, then we should not check these predictions, because there is no profit to doing so.

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