index.html#type-t">IR.Procdesc.Node.t</a></code></dt><dt class="spec value" id="val-of_underlying_node"><a href="#val-of_underlying_node" class="anchor"></a><code><span class="keyword">val</span> of_underlying_node : <a href="../../../../../IR/Procdesc/Node/index.html#type-t">IR.Procdesc.Node.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-compare_id"><a href="#val-compare_id" class="anchor"></a><code><span class="keyword">val</span> compare_id : <a h