I don't think the argument is that much about macro-op fusion vs cracking, as both sides agree that highperformance implementations are doable and not hinderes

I don't think the argument is that much about macro-op fusion vs cracking, as both sides agree that highperformance implementations are doable and not hinderes much buy both. I think the real dispute is how the opcode space and code density will evolve when more and more extension will need to be added. Will more 32 opcode space and 64 bit instructions but no 16 and no 48 bit instructions in the longterm be a better choice than fewer 32 bit insrructions, but 16/48/64 bit instructions?