Editing C-- (section)

===Haskell===
Some developers of C--, including Simon Peyton Jones, João Dias, and Norman Ramsey, work or have worked on GHC, whose development has led to extensions in the C-- language, forming the ''Cmm'' dialect which uses the [[C preprocessor]] for ergonomics.<ref name="cmm-hs" /><ref>{{Cite web |title=5.10. GHC Backends — Glasgow Haskell Compiler 9.8.1 User's Guide |url=https://downloads.haskell.org/ghc/9.8.1/docs/users_guide/codegens.html#:~:text=5.10.-,GHC%20Backends,compiling%20it%20to%20executable%20code. |access-date=2024-06-20 |website=downloads.haskell.org}}</ref>

GHC backends are responsible for further transforming C-- into executable code, via [[LLVM]] IR, slow C, or directly through the built-in native backend.<ref name="code generator" /><ref name="llvm">{{Cite web |date=August 25, 2019 |title=Opinion piece on GHC backends. |url=https://andreaspk.github.io/posts/2019-08-25-Opinion%20piece%20on%20GHC%20backends.html |access-date=2024-06-20 |website=andreaspk.github.io}}</ref><ref>{{Cite web |title=Using the Glasgow Haskell Compiler (GHC) |url=https://programmingdoer.com/ |access-date=2024-06-20 |website=ProgDoer}}</ref> Despite the original intention, GHC does perform many of its generic optimizations on C--. As with other compiler IRs, the C-- representation can be dumped for debugging.<ref name="debugging" /> Target-specific optimizations are performed later by the backend.