<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/64535>64535</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang: missed optimazation for an empty string
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          diamante0018
      </td>
    </tr>
</table>

<pre>
    When initializing a std::string with "" (empty) clang misses the opportunity to optimize a lot of code away.
In a real example we came across when examing a function from libc++ with @philnik777 we found the loss can be quite substantial

God bolt demo:
https://godbolt.org/z/f8av3EYbn

I opened this issue as advised by philnik777
</pre>
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