n> is_loop_head : <span><a href="../../../../IR/Procdesc/index.html#type-t">IR.Procdesc.t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="Node/index.html#type-t">Node.t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value" id="val-wto" class="anchored"><a href="#val-wto" class="anchor"></a><code><span><span class="keyword">val</span> wto : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span><a h