<html>
    <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 --- - PowerPC - shufflevector operation gets lost"
   href="https://llvm.org/bugs/show_bug.cgi?id=27735">27735</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>PowerPC - shufflevector operation gets lost
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.8
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </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>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>eric.schweitz@pgroup.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=16367" name="attach_16367" title="reduced.ll">attachment 16367</a> <a href="attachment.cgi?id=16367&action=edit" title="reduced.ll">[details]</a></span>
reduced.ll

Compiling the attached .ll file with the following commands:

  llc reduced.ll -mcpu=native -O2 -o reduced.s
  as reduced.s -o reduced.o
  gcc -o a.out reduced.o
  ./a.out

gives the output:

  -81.000000 68.000000

The correct answer is:

  -91.000000 58.000000

and is what is produced by the x86 backend.

It appears that the instruction %Z.L.JA291.9 is being erroneously omitted.</pre>
        </div>
      </p>
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