As a compiler developer I see no reason to use a lot of passes. My language compiler is designed in such a way, that it does its frontend work (except tokenizat

As a compiler developer I see no reason to use a lot of passes. My language compiler is designed in such a way, that it does its frontend work (except tokenization and syntax analysis) in one big pass, which does all the stuff necessary. Splitting this work in multiple passes is impossible due to language specifics - interleaving many compilation stages is necessary for many language features to function properly. Also I doubt that a common framework can be used by many languages at all. Usually a mature language compiler is self-hosted, which makes near to impossible to incorporate in it some thirdparty library/framework written in some other language.