<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/68409>68409</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Too many warning messages during mlir build process
        </td>
    </tr>

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

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

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

<pre>
    ```
system:
gcc (Ubuntu 9.4.0-1ubuntu1~20.04.2) 9.4.0
```
summary:
```
llvm-project/mlir/include/mlir/IR/OperationSupport.h:656:67: warning: parameter ‘rhs’ set but not used [-Wunused-but-set-parameter]
  656 |     bool compareProperties(OpaqueProperties lhs, OpaqueProperties rhs) final {
      |                                                  ~~~~~~~~~~~~~~~~~^~~
llvm-project/mlir/include/mlir/IR/OperationSupport.h: In instantiation of ‘llvm::hash_code mlir::RegisteredOperationName::Model<ConcreteOp>::hashProperties(mlir::OpaqueProperties) [with ConcreteOp = mlir::transform::ApplyExpandOpsPatternsOp]’:
llvm-project/mlir/include/mlir/IR/OperationSupport.h:666:21:   required from here
llvm-project/mlir/include/mlir/IR/OperationSupport.h:666:53: warning: parameter ‘prop’ set but not used [-Wunused-but-set-parameter]
  666 |     llvm::hash_code hashProperties(OpaqueProperties prop) final {
```

</pre>
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