What does "CC Graph Reduction" in Firefox Performance tool mean?
<p>I am profiling a JavaScript application using the Firefox developer tools, specifically the <em>Perfomance</em> tab.</p>

<p>In the result I see the following entry:</p>

<blockquote>
  <p>CC Graph Reduction - ForgetSkippable</p>
</blockquote>

<p>Unfortunately I cannot find a clear documentation explaining what it is.</p>

<p>I would like to know:</p>

<ul>
<li>What is it?</li>
<li>When is this event usually fired?</li>
</ul>