updated in same statement (i = i + 1, i needs to be added to gen)

 kill rule:  for each variable updated in current statement but not read in this or any PRIOR statement,
 add to kill.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isMergeableFunctionCallBlock(org.apache.sysds.parser.DMLProgram)">isMergeableFunctionCallBlock</a></span>&#8203;(<a href="DMLProgram.html" title="class