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      <base href="https://bugs.llvm.org/">
    </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 - SelectionDAG crashes on optnone function after r308025"
   href="https://bugs.llvm.org/show_bug.cgi?id=33833">33833</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>SelectionDAG crashes on optnone function after r308025
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>chandlerc@gmail.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=18814" name="attach_18814" title="reduced IR test case">attachment 18814</a> <a href="attachment.cgi?id=18814&action=edit" title="reduced IR test case">[details]</a></span>
reduced IR test case

After r308025, SelectionDAG crashes while compiling the file:
<a href="https://github.com/xiph/speex/blob/master/libspeex/testenc.c">https://github.com/xiph/speex/blob/master/libspeex/testenc.c</a>

(Possibly some older version of it, I haven't checked...)

I'm attaching a minimized test case that pretty clearly shows the bug. It seems
specific to O0 (optnone attribute is applied).

Because this is blocking even unoptimized builds I'm going to revert the patch
while it gets investigated.</pre>
        </div>
      </p>


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