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Turbo Haskell JITs GHC Core on Truffle and can compile GHC itself

comonad.com 4 min read Editor score 8/10

THC takes over after GHC parsing, typechecking and Core optimization, then JIT- or AOT-compiles programs through Truffle and GraalVM; it can compile GHC itself. The project is a substantial example of reusing a mature compiler front end with a different runtime.

What: THC is a Haskell JIT and AOT compiler that runs GHC Core on the JVM.
How: GHC handles parsing through Core optimization; THC then compiles and executes Core using a Truffle/GraalVM runtime.
Why it matters: Its JIT, AOT, and polyglot FFI support let engineers run Haskell programs, produce executables, and call libraries from other languages.

GHC produces Core that THC compiles and runs on Truffle/GraalVM. Sketched from the article's own text.

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