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