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    <body><span class="vcard"><a class="email" href="mailto:sbarati&#64;apple.com" title="Saam Barati &lt;sbarati&#64;apple.com&gt;"> <span class="fn">Saam Barati</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - JavaScriptCore deeply nested &quot;call&quot; performance issue"
   href="https://bugs.webkit.org/show_bug.cgi?id=139847">bug 139847</a>
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            <th>What</th>
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               &nbsp;
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           <td>sbarati&#64;apple.com
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - JavaScriptCore deeply nested &quot;call&quot; performance issue"
   href="https://bugs.webkit.org/show_bug.cgi?id=139847#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - JavaScriptCore deeply nested &quot;call&quot; performance issue"
   href="https://bugs.webkit.org/show_bug.cgi?id=139847">bug 139847</a>
              from <span class="vcard"><a class="email" href="mailto:sbarati&#64;apple.com" title="Saam Barati &lt;sbarati&#64;apple.com&gt;"> <span class="fn">Saam Barati</span></a>
</span></b>
        <pre>My guess is we're recursively emitting bytecode in a way that has exponential blowup.</pre>
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