Updating commentary about PrimOps and codegen

Hi all, I've been reading Commentary about PrimOps and code generation and I noticed that it is partially outdated (e.g. references to old code gen files: compiler/codeGen/CgPrimOp.hs): http://hackage.haskell.org/trac/ghc/wiki/Commentary/PrimOps http://hackage.haskell.org/trac/ghc/wiki/Commentary/Compiler/CodeGen Would anyone be so kind to update these pages and possibly other pages about code generation, STG, Cmm and related stuff? I've been trying to figure out how to add new PrimOps and having up to date documentation would be most helpful. Janek