<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJylUs1u2zAMfhr5QsxwZDuODz60Cwr0ULRYDjtLFmsrlSWDkpOuTz86yTasOw4gLEukvh-KOpgf3XeEUZ0QFJDqeYlwRiBUBtKI8BgPL097GFzQyoH10RoEsS0mNc_WD6K84xgw3bvQvx3sBwq5E7LlCtD4GgjhDcnjetUmq5z9UMkGDzaCCZ7p_JXnpNyC66k6KeuUdggpgHKOs6uYmItiL4q76_dgJy4iQKJAEfDdxoTmxijkV77EUCv-mf1YnyiYpeeKq7uYFK31K4M5LjGtjv4ywfIZ6qIM3xMpxqFZyIfz2inrYUCPZHuYgsE8M11p2rJVmVrSGKg7moD0ipSyhVw3pjTHtVHygWOwaVx03oeJN86dfi1fZgpH7BNvbYwLRv6py13dZGNXVlpWUu5qXTR9Y5pWt1puNrqUZtdW_S7jhqGLnajvhZRhRj-xWCnqffb_9LaTheTY1Ju6KmSZN-V221eNqpWpyqLUoipw4kfLV5w80JBRd4HUyxA56fhx4p-kitEOHvGm9nevboKTTe6Se2YbTy98BN_WueSZ-XcezUI8hECLT3bCTzOWXYx0Fxc_AcQl-FU>53857</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [OpenMP] Race on the IsSPMD global during runtime initialization
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            openmp
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
            jdoerfert
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          jdoerfert
      </td>
    </tr>
</table>

<pre>
    We have a race as we read the IsSPMD global inside `mapping::getBlockSize()` before kernel initialization is done and the value is available to all threads.

Similar errors existed before, this one was introduced as we started to adjust `getBlockSize` for the extra warp/wave in generic mode.
</pre>
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