W. D. Young, A Verified Code Generator for a Subset of Gypsy
Relevance: a verified compiler (from a small
Pascal-like subset to an assembly language) and a component of the CLI
Verified Stack
The verified compiler used in the CLI Verified Stack as reported in bib::bhmy89 is described here. By the way, we could not find the original Nqthm script for this effort, but the complete script is included in Appendix B of the linked pdf file above, pages 206-860.