rn a precondition which is provable only if (modulo soundness bugs) the registers at post-execution will have equal values given the registers at pre-execution have equal values.</p></div></div><div class="odoc-spec"><div class="spec value" id="val-compare_subs" class="anchored"><a href="#val-compare_subs" class="anchor"></a><code><span><span class="keyword">val</span> compare_subs : 
  <span>postconds:<span><a href="#type-comparator">comparator</a> list</span> <span class="arrow">&#45;&gt;</span></span>
  