There's also "Let's Build A Compiler" by Jack Crenshaw: https://compilers.iecc.com/crenshaw/ https://compilers.iecc.com/crenshaw/ This page links to that and

There's also "Let's Build A Compiler" by Jack Crenshaw: https://compilers.iecc.com/crenshaw/ https://compilers.iecc.com/crenshaw/ This page links to that and another, "A Nanopass Framework for Compiler Education" by Sarkar, Waddell, and Dybvig: http://prog21.dadgum.com/30.html http://prog21.dadgum.com/30.html http://www.cs.indiana.edu/~dyb/pubs/nano-jfp.pdf http://www.cs.indiana.edu/~dyb/pubs/nano-jfp.pdf