Comment by sparkie

> x86 is unusual in mostly having a maximum of two operands per instruction[2]

Perhaps interesting for those who aren't up to date, the recent APX extension allows 3-operand versions of most of the ALU instructions with a new data destination, so we don't need to use temporary registers - making them more RISC-like.

The downside is they're EVEX encoded, which adds a 4-byte prefix to the instruction. It's still cheaper to use `lea` for an addition, but now we will be able to do things like

    or rax, rdx, rcx