CISC would be better than RISC because one should keep in mind that for many operation most of the execution time is VM overhead.
But if you want performance you'd rather tailor your instruction set to the language it will execute (assuming you're not making a general purpose VM). CPU makers like Intel do actually keep a close look on what programs are doing in order to evolve their instruction set.
But if you want performance you'd rather tailor your instruction set to the language it will execute (assuming you're not making a general purpose VM). CPU makers like Intel do actually keep a close look on what programs are doing in order to evolve their instruction set.