<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/54243>54243</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [mlir-opt] error: custom op 'arith.constant' is unknown
        </td>
    </tr>

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

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

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

<pre>
    when using the command "mlir-opt --convert-affine-for-to-gpu " , it occurs
`error: custom op 'arith.constant' is unknown`
the "arith" Dialect belongs to MLIR, why the command can't identify 'arith.constant' op?
</pre>
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