<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/135377>135377</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] await_suspend() -> std::noop_coroutine() = missed optimization
        </td>
    </tr>

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

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

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

<pre>
    When returning `std::noop_coroutine()` from `await_suspend`, this always seems to result in:
```
lea std::__n4861::coroutine_handle<std::__n4861::noop_coroutine_promise,%rcx
jmp *(%rcx)
```

This delegates to a function that is simply `ret` (<std::__n4861::coroutine_handle<std::__n4861::noop_coroutine_promise>::__frame::__dummy_resume_destroy()>)

This seems like a missed optimization. Can we simply inline the `ret` and skip the indirect jump?
</pre>
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