Enabled compiling to llvm again.

sample-programs/basic-1

@@ -1,5 +1,5 @@
-add : Int -> Int -> Int ;
-add x y = x + y;
+add : Int ;
+add = 5;
 
 main : Int ;
-main = add 4 6 ;
+main = add ;

src/Main.hs

@@ -59,7 +59,7 @@ main' debug s = do
     when check (removeDirectoryRecursive "output")
     createDirectory "output"
     writeFile "output/llvm.ll" compiled
-    -- if debug then debugDotViz else putStrLn compiled
+    if debug then debugDotViz else putStrLn compiled
 
     -- interpred <- fromInterpreterErr $ interpret lifted
     -- putStrLn "\n-- interpret"