<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/130639>130639</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Wider-than-native shifts are compiled inefficiently when the shift count is partially known
        </td>
    </tr>

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

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

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

<pre>
    On 32-bit platforms, 64-bit shifts can be compiled more efficiently if you know whether or not the shiftcount is greater than 32 or not. For example, in [this Godbolt](https://godbolt.org/z/KM1bTsbjv), `short_shift` and `long_shift` should both be able to skip the `test cl, 32` instruction.
</pre>
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