This is a compiler for a tiny subset of Haskell into LLVM IR, based vaguely on the STG machine. The implementation implicitly assumes a 64-bit target platform; it has no typechecker, and will produce broken programs if fed mis-typed input; it supports I/O only by writing a function [Int] -> [Int] that consumes input bytes and returns output bytes; and it has no proper error messages for input that uses unsupported constructs. That said, it can compile a simple strict-tail-recursive sumtorial 10000000 into a binary that runs in about 0.23s on my machine, which is actually faster than an equivalent program compiled by GHC without optimizations (of course, with optimizations, GHC beats it by an order of magnitude). It also has a mostly-working garbage collector.

The output is only known to work with LLVM 5, and definitely won't be accepted by 3, at least.