It’s not `lea` itself that’s new in AMD64 but rather RIP-relative addressing; this can be used as a memory operand for any instruction but it’s especially usefu

It’s not `lea` itself that’s new in AMD64 but rather RIP-relative addressing; this can be used as a memory operand for any instruction but it’s especially useful with `lea`. If you’re wondering where the reference to RIP is, the assembly in the post uses %eip instead of the usual %rip. [Edit: And doing so is wrong, contrary to what I wrote before editing; see sibling comment.]