> instruction stream density can be puffed up if we don't have a getvar instruction that takes an immediate operand, but only a register pair It's hard to imag

> instruction stream density can be puffed up if we don't have a getvar instruction that takes an immediate operand, but only a register pair It's hard to imagine this being a concern. If you are in a position to choose whether to use a register or stack VM, you are certainly in a position to add such an instruction (assuming the encoding allows it, etc).