de>. <code>pp_instr</code> is used for the debug HTML and passed as a hook to handle both SIL and HIL CFGs.</p></div></div><div class="odoc-spec"><div class="spec value" id="val-exec_cfg" class="anchored"><a href="#val-exec_cfg" class="anchor"></a><code><span><span class="keyword">val</span> exec_cfg : 
  <span>?do_narrowing:bool <span class="arrow">&#45;&gt;</span></span>
  <span><a href="argument-1-T/CFG/index.html#type-t">TransferFunctions.CFG.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a 