GHC User’s Guide Documentation (Haskell)

(Release 8.4.1) — Univ. Of Glasgow, GHC Team, 2018. — 554 p.
GHC User’s Guide Documentation.This is a guide to using the Glasgow Haskell Compiler (GHC): an interactive and batch compilation system for the Haskell 2010 language.GHC supports numerous language extensions, including concurrency, a foreign function in- terface, exceptions, type system extensions such as multi-parameter type classes, local uni- versal and existential quantification, functional dependencies, scoped type variables and ex- plicit unboxed types. These are all described in GHC Language Features.GHC has a comprehensive optimiser, so when you want to Really Go For It (and you’ve got time to spare) GHC can produce pretty fast code. Alternatively, the default option is to compile as fast as possible while not making too much effort to optimise the generated code (although GHC probably isn’t what you’d describe as a fast compiler.