|7||9|| * John D has built a complete new codegen pipeline, running alongside the old one, enabled by `-fuse-new-codegen`. It is described here: [wiki:Commentary/Compiler/NewCodeGenPipeline]. It uses a new representation for `Cmm`, mostly with "Z" in the name. (Let's call the original Cmm `OldCmm` and this new one `CmmZ`.) It has a new conversion STG->CmmZ, and then sequence of passes that optimise and cps-convert the Cmm. Finally, it is converted back to the old Cmm so that it can flow to the old code generators.