<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/83137>83137</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Long double options cannot be enabled
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          cctv130
      </td>
    </tr>
</table>

<pre>
    clang-cl: warning: unknown argument ignored in clang-cl: '-mlong-double-128' [-Wunknown-argument]

That means I didn't force it on successfully ，on windows


</pre>
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