Architecture Question:

As superscalar machines become more complex, the difficulties of scheduling instruction issue become more complex. Another way of looking at superscalar machines is as dynamic instruction schedulers - the hardware decides on the fly which instructions to execute in parallel, out of order, etc.

An alternative approach would be to get the compiler to do it beforehand - that is, to statically schedule execution. This is the basic concept behind Very Long Instruction Word, or VLIW machines.