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    <head>
      <base href="https: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 --- - [avx512] fail to select sign_extend"
   href="https:llvm.org/bugs/show_bug.cgi?id=22867">22867</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[avx512] fail to select sign_extend
          </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>Windows NT
          </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>Backend: X86
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>asaf.badouh@intel.com
          </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=14022" name="attach_14022" title="test case">attachment 14022</a> <a href="attachment.cgi?id=14022&action=edit" title="test case">[details]</a></span>
test case

fail to select sext in the following code,
  %0 = phi i1 [ true, %for.body ], [ false, %lor.rhs ]
  %cond = sext i1 %0 to i32

repro:
llc -mcpu=knl sext_fail.ll</pre>
        </div>
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