Linux

Generating a working assembly code is not a big deal. People were doing it before LLMs see slightest light of the day using various other heuristics including Genetic Programming. The challenge is writing an Assembly code which you can prove works well and will continue to do so :)

That's why Genetic Programming is very rarely used to directly generate a software.

Edit: But you can use GP for Machine Learning tasks. Tell it to generate a program, like an assembly code which plays chess well. Or can do a binary classification given a photo or other media.