Assembler invert XMM register [duplicate]

Question

This question already has answers here:

Bitwise negation of XMM register (2 answers)

How do I perform a bitwise NOT in SSE/AVX? (4 answers)

Closed last year.

I have to invert the contents of a 128-bit XMM register.

I've tried it in many different ways, but all I get is a not-so-nice error message.

I'm thankful for all kinds of help.

Answer 1

First, PCMPEQD on some register (passing it as both operands) to load all ones into it. Then, PXOR that register with the input register.