std::string unique_name;
  std::string description;
  mlir::TypeID type_id;
  std::unique_ptr<TargetHardware> target_hardware;
  std::function<std::unique_ptr<TargetHardware>()> target_hardware_factory;
};

struct RegisteredTargetHardwareOps {
  explicit RegisteredTargetHardwareOps(mlir::TypeID hardware_type)
      : hardware_typeid(hardware_type) {}
  // Key is the Operation TypeID

```
std::unique_ptr<TargetHardware> CreateFooHardware() {
  return std::make_unique<FooHardware>();
}

TargetHardwareRegistration<FooHardware> foo_hardware(
    "Target device for FOO", CreateFooHardware);
```

### Advanced user

For advanced users (e.g., you may already have your own hardware dialect
defined), please just use `TargetHardware` directly. See the following code
snippet for reference.