I assume performance is one of the main reasons that C&#x2F;C++ are still relevant today, and the reason why modern languages like Swift and Go can&#x27;t be as fast is because of their &quot;runtime&quot; software layer which makes their fancy features possible.<p>My honest if somewhat noobish question is: Why isn&#x27;t support for features like type safety and so on being incorporated into CPUs themselves, like they did with SIMD instruction sets?<p>I mean, if so many languages require &quot;runtimes&quot; now, why haven&#x27;t the features that are common across those runtimes, been factored out into hardware already?