[Webkit-unassigned] [Bug 226604] New: DFG should eliminate obvious store barriers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=226604

            Bug ID: 226604
           Summary: DFG should eliminate obvious store barriers
           Product: WebKit
           Version: Other
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fpizlo at apple.com

We have a store barrier elimination strategy mostly based on "clustering" -- moving the barriers to the point where they will actually be meaningful.

Unfortunately, we have PutByOffset listed as DoesGC, so we will not eliminate any store barriers around sequences of PutByOffsets.  This appears to be the case because PutByOffset was accidentally added to the DoesGC list in r240991.

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