You can drop `-C target-feature=+ssse3` since `target-cpu=native` will cover that. The `-C opt-level=3` isn't necessary either, but if you drop that, it looks l

You can drop `-C target-feature=+ssse3` since `target-cpu=native` will cover that. The `-C opt-level=3` isn't necessary either, but if you drop that, it looks like there's a function that doesn't get inlined. However, even without opt-level=3, the popcnt instruction is still emitted.