<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/71003>71003</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang driver seems to treat `.s` file extension as `-x assembler-with-cpp` instead of `-x assembler`
        </td>
    </tr>

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

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

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

<pre>
    According to https://github.com/llvm/llvm-project/blob/main/clang/include/clang/Driver/Types.def#L78 and  https://gcc.gnu.org/onlinedocs/gcc-11.1.0/gcc/Overall-Options.html, it seems `.s` should be treated as `-x assembler`, but it seems the driver treats `.s` as `-x assembler-with-cpp`.

Steps to reproduce:
```
touch empty.s
clang -### empty.s
```

The output contains "-x" "assembler-with-cpp".



</pre>
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