Comparing enums gives SIGILL

```rust
fn main() {
    let _ = LoopState::Continue(()) == LoopState::Break(());
}

#[derive(PartialEq)]
enum LoopState {
    Continue(()),
    Break(())
}
```

```
./test.sh: line 29: 70353 Illegal instruction: 4  ./target/out/std_exampl
```