That sounds like a long-winded way of saying "x86_64 and the JVM are different but neither prevents TCO", which is precisely my point! Unless your point is "it'

That sounds like a long-winded way of saying "x86_64 and the JVM are different but neither prevents TCO", which is precisely my point! Unless your point is "it's not TCO unless it's literally an instruction called 'jump' and iteration transforms don't count"?