<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/136057>136057</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [CIR] Upstream support for C++ name mangling
        </td>
    </tr>

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

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

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

<pre>
    ### Overview
Upstream support for C++ name mangling. Currently, we're still emitting unmangled names for C++ functions. As we start to implement C++ features, we're developing a large backlog of tests that will need to be updated when name mangling is enabled.

This will require introducing the infrastructure for target-specific CXXABI handling.

### Suggested minimal test case
```
void fn() {}
```

### Existing incubator tests
This is thoroughly covered by all C++ tests, but we are missing mangling-specific tests. There are many such tests in clang/test/CodeGenCXX/mangle*.cpp

</pre>
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