[Webkit-unassigned] [Bug 184945] New: [negative result] Bimorphic Multi___ByOffset with already proven structures should use select

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=184945

            Bug ID: 184945
           Summary: [negative result] Bimorphic Multi___ByOffset with
                    already proven structures should use select
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fpizlo at apple.com

Perf benchmarking shows that this is actually worse than branching, probably because select is a data dependency, which is worse than branching.

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