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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [MemorySSA] Assertion `E >= 2 && "Cannot only remove incoming values in MemoryPhis with at least 2 values."' failed."
   href="https://bugs.llvm.org/show_bug.cgi?id=46574">46574</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[MemorySSA] Assertion `E >= 2 && "Cannot only remove incoming values in MemoryPhis with at least 2 values."' failed.
          </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>enhancement
          </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>paulsson@linux.vnet.ibm.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=23674" name="attach_23674" title="reduced testcase">attachment 23674</a> <a href="attachment.cgi?id=23674&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase

opt -mtriple=s390x-linux-gnu -O3  -o out.opt.bc  -enable-simple-loop-unswitch
-enable-nontrivial-unswitch -enable-unswitch-cost-multiplier=false
tc_memphi_deleteincoming.ll

MemorySSA.h:592: void llvm::MemoryPhi::unorderedDeleteIncoming(unsigned int):
Assertion `E >= 2 && "Cannot only remove incoming values in MemoryPhis with "
"at least 2 values."' failed.
...
10 0x000002aa21b1fb04 llvm::MemorySSAUpdater::removeEdge</pre>
        </div>
      </p>


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