[Webkit-unassigned] [Bug 173228] New: [JSC] Avoid code bloating for iteration if block does not have "break"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173228

            Bug ID: 173228
           Summary: [JSC] Avoid code bloating for iteration if block does
                    not have "break"
           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

for-of iteration emits code path for break. But we can easily ensure that the given for-of does not have "break".
If we ensure that the given block does not have "break" we should not emit this code path.

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