<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/107870>107870</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [mlir] remove-dead-values pass throws error when module has a name
        </td>
    </tr>

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

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

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

<pre>
    When the input mlir module has a name, like this for example:
```
module @test_opt attributes {} {
  func.func public @test_opt(%arg0: tensor<128x10xf32>) -> tensor<128x10xf32> {
    %0 = tensor.empty() : tensor<64x96xbf16>
    // CHECK-NOT: %[[C:.*]] = tensor.empty[[C:.*]]
 return %arg0 : tensor<128x10xf32>
  }
}
```

then `remove-dead-values` pass throws this error:
```
error: cannot optimize an IR with non-function symbol ops, non-call symbol user ops or branch ops
```

After removing module name (`@test_opt`) everything works. Seems to be a bug.
</pre>
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