<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/64511>64511</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Backport cost model fix for SystemZ
        </td>
    </tr>

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

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

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

<pre>
    /cherry-pick 85e4ee15d32ae0344755d11d4ca90a15a6e005cd

This was found crashing the Rust compiler when `llvm_unreachable` is configured to trap.
https://bugzilla.redhat.com/show_bug.cgi?id=2224885
</pre>
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