Example compiling haskell to llvm IR code and then linking it with the necessary libraries to run it. (I installed ghc and llvm with brew)

haskell_to_llvm.sh

cat >demo.hs <<EOF
quicksort [] = []
quicksort (p:xs) = (quicksort lesser) ++ [p] ++ (quicksort greater)
  where
    lesser  = filter (<  p) xs
    greater = filter (>= p) xs

main = print(quicksort([5,2,1,0,8,3]))
EOF

# get demo.ll (this also produces a .c file in tmp that we will need)
rm -rf tmp demo *ll \
&& mkdir -p tmp \
&& ghc -v -keep-llvm-file \
       -tmpdir tmp -keep-tmp-files \
       demo.hs \
&& rm demo.o demo demo.hi

# get main.ll (from ghc_5.c)
GHC=/usr/local/Cellar/ghc/8.8.1
clang -S -I${GHC}/lib/ghc-8.8.1/include -emit-llvm tmp/*/*.c -o main.ll

# remove tmp
rm -rf tmp


clang \
   -O3 \
   -DTABLES_NEXT_TO_CODE \
   -o \
   demo \
   -Wl,-no_compact_unwind \
   main.ll \
   demo.ll \
   -L$GHC/lib/ghc-8.8.1/{base-4.13.0.0,integer-gmp-1.0.2.0,ghc-prim-0.5.3,rts} \
   -lHS{base-4.13.0.0,integer-gmp-1.0.2.0,ghc-prim-0.5.3,rts} \
   -L$GHC/libexec/integer-gmp/lib \
   -lgmp \
   -lCffi \
   -liconv \
   -lm \
   -ldl


./demo