Nearly ALL register-based IRs give you infinate number of registers. Register allocation is not done until absolutely the last minute. This alone is one good re

Nearly ALL register-based IRs give you infinate number of registers. Register allocation is not done until absolutely the last minute. This alone is one good reason to favor register based stack machines. A register allocator along with basic dependence analysis phase can be tacked on the VM and you have an instant JIT "executor"; interpreter + compiler + runtime all in one convenient binary.