This is what happened in my compilers class. We spent, like, the whole thing talking about grammars etc. Which is mind-numbingly boring (to me), and especially given a significant number of industry parsers are hand-rolled/recursive descent style, its not terribly useful information.
Same here, at FU Berlin. We spent several weeks on LR and LALR parsers and such and, IIRC, even more than a week on regular expressions. Somehow we talked about two-address and three-address instructions, but never seemed to do any code generation, and certainly no optimization. It was very disappointing.
At the moment, some of us in the PGH FP group are working through https://www.cs.cmu.edu/~rwh/pfpl/, and so far I vastly prefer it. It is math heavy, which I like for various personal reasons which are irrelevant here, but it also skips parsing!
