macro-op vs. micro-op

David Kanter (dkanter@realworldtech.com) on 5/21/07 wrote:
---------------------------
>
>However, Intel is a different story. First of all, the term is uop, not micro-op,
>which refers to the internal operations. In Intel terminology a macro-op is an
>x86 instruction. So macro-op fusion is the fusing of two x86 instruction (CMP+JMP).
>
>DK

Intel does use terms micro-ops and uOps interchangeably.
See "Inside Intel Core Microarchitecture. Setting new standard for energy-efficient performance" white paper by Ofri Wechsler.
The result of micro-op fusion is also called micro-op/uOp or sometimes complex uOP.
The term macro-op in Intel literature indeed refers to x86 instruction.

For example, "add [mem], reg" consists of four micro-ops, two complex micro-ops but only one macro-op.