Dummy operations handling of Intel processor

Question

Admittedly, I have a bit silly question. Basically, I am wondering if there are some special mechanisms provided by Intel processors to efficiently execute a series of dummy

Answer 1

There's very little need for optimizing sequences of no-ops on the x86 architecture because it has no-op encodings of varying lengths. Instead of many one-byte no-ops, one can just use a single multi-byte no-op. Somewhat more work for the decoder, but the actual execution units only see a single instruction to execute.