<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/72972>72972</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            For v8i8 operand, occur fatal error: error in backend: Do not know how to split this operator's operand!
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          mrxia1216
      </td>
    </tr>
</table>

<pre>
    In amdgcn architecture, I add instruction and builtin function, but when i exec "RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -target-cpu gfx9xx  -S -o - %s", occur below error

</pre>
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