[Webkit-unassigned] [Bug 185345] New: [JSC][ARM64] Emit CAS if LSE (Large System Extension) is enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185345

            Bug ID: 185345
           Summary: [JSC][ARM64] Emit CAS if LSE (Large System Extension)
                    is enabled
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: utatane.tea at gmail.com

ARM v8.1 introduces large system extension (LSE), which includes a direct "cas" instruction instead of LL/SC.

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