<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/99950>99950</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Document `pauthabitest`
        </td>
    </tr>

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

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

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

<pre>
    https://github.com/llvm/llvm-project/pull/97237 implemented a way to specify pointer authentication ABI via explicit `-mabi` option or via target triple environment component. We need to document few aspects here:
  - Transient nature of `pauthabitest`. Noone should rely on this for real implementation
  - How target would implemented pointer authentication ABI, define signing scheme, etc.
</pre>
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