<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/129312>129312</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc++] Ensure that passing predicates through `reference_wrapper` doesn't kill `desugars_to` optimizations
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            libc++,
            performance
      </td>
    </tr>

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

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

<pre>
    We do that in e.g. `ranges::contains` where we pass a `reference_wrapper` to the projection to `ranges::find`. Does that turn off optimizations?
</pre>
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