<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/82154>82154</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Should consteval constructor produce symbols?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            c++20,
            consteval
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          ChuanqiXu9
      </td>
    </tr>
</table>

<pre>
    (From https://github.com/llvm/llvm-project/issues/81745)

During the debugging process, I found the codegen will generate consteval constructor. It is surprising to me. In my memory, we shouldn't emit consteval functions at all.

Reproducer:

```
// test-main.cc
struct S1 { consteval S1(int) {} };
int main() {
    struct S2 { S1 s = 0; };
 S2 s;
}
```

```
$ clang++ -std=c++20 test-main.cc -c -o main.o
$nm -C main.o | grep S1
0000000000000000 W S1::S1(int)
```

We can double check the LLVM IR:

```
$ clang++ -std=c++20 test-main.cc -fmodule-file=M=test.pcm -S -emit-llvm -o -
```

We should be able to see the definition of `@_ZN2S1C2Ei`. And we can demangle it  by:

```
$ llvm-cxxfilt _ZN2S1C2Ei
S1::S1(int)
```
</pre>
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