<html>
    <head>
      <base href="http://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - DSE miscompile"
   href="http://llvm.org/bugs/show_bug.cgi?id=18068">18068</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>DSE miscompile
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Scalar Optimizations
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>hfinkel@anl.gov
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=11614" name="attach_11614" title="bugpoint reduced test case">attachment 11614</a> <a href="attachment.cgi?id=11614&action=edit" title="bugpoint reduced test case">[details]</a></span>
bugpoint reduced test case

ClangBugs2/diff/t43047 from PR16431 is a DSE miscompile.

To reproduce:

opt -o o.bc -basicaa -dse bugpoint-tooptimize.bc
clang o.bc bugpoint-tonotoptimize.bc -o t

./t < input.txt 
res = 1910

whereas running:

clang bugpoint-tooptimize.bc bugpoint-tonotoptimize.bc -o t
./t < input.txt 
res = 2553</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>