<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61995>61995</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Backport libunwind test case and bugfix to 16.0.2
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          Ami-zhang
      </td>
    </tr>
</table>

<pre>
    Add test to check for unw_resume() and restore $r1 before $r4 in `jumpto`  for LoongArch64.
/cherry-pick 366c5474a3002114b8980ab278d93baa96046385 ff0aabf14dfa0a369c38f6e267c56a83ee48d647
</pre>
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