Comment by almostgotcaught

there are no good modern compiler books - everything that's been written down pales in comparison to what GCC/LLVM really involve. recently i found Engineering a Compiler by Cooper and Torczon when reviewing/prepping for interviews - it wasn't bad. also there's now LLVM Code Generation by Quentin Colombet but that's basically a code walk-through of LLVM (it doesn't cover any of the algos). and it was probably out of the date the second it got published lol (not really but maybe). the truth is that trying to learn how to build a compiler from a single book is like trying to learn how to build a skyscraper from a single book.