import Data.String
import Foreign.Ptr
import System.IO
+import System.Exit
import LLVM.Context
import LLVM.ExecutionEngine
import LLVM.Module
+import LLVM.PassManager
import LLVM.IRBuilder
import LLVM.AST.AddrSpace
import LLVM.AST.Constant
import LLVM.AST.Operand
import LLVM.AST.Type as Type
import LLVM.Pretty
+import Control.Monad
+import Control.Monad.Trans.Class
+
+type ModuleBuilderE = ModuleBuilderT (Either String)
foreign import ccall "dynamic" exprFun :: FunPtr (IO Float) -> IO Float
main :: IO ()
main = do
- program <- read <$> getContents
- let mdl = buildModule "main" $ mapM buildAST program
- Text.hPutStrLn stderr (ppllvm mdl)
- withContext $ \ctx ->
+ AST.Program asts <- read <$> getContents
+ let eitherMdl = buildModuleT "main" $ mapM buildAST asts
+ case eitherMdl of
+ Left err -> die err
+ Right mdl -> withContext $ \ctx ->
withMCJIT ctx Nothing Nothing Nothing Nothing $ \mcjit ->
withModuleFromAST ctx mdl $ \mdl' ->
+ withPassManager defaultCuratedPassSetSpec $ \pm -> do
+ runPassManager pm mdl' >>= guard
+ Text.hPutStrLn stderr . ppllvm =<< moduleAST mdl'
withModuleInEngine mcjit mdl' $ \emdl -> do
Just f <- getFunction emdl "expr"
let f' = castFunPtr f :: FunPtr (IO Float)
exprFun f' >>= print
-buildAST :: AST.AST -> ModuleBuilder Operand
+buildAST :: AST.AST -> ModuleBuilderE Operand
buildAST (AST.Function nameStr paramStrs body) = do
- let name = fromString nameStr
- function name params float $ \binds -> do
+ let n = fromString nameStr
+ function n params float $ \binds -> do
let bindMap = Map.fromList (zip paramStrs binds)
buildExpr bindMap body >>= ret
where params = zip (repeat float) (map fromString paramStrs)
buildAST (AST.Eval e) =
function "expr" [] float $ \_ -> buildExpr mempty e >>= ret
-buildExpr :: Map.Map String Operand -> AST.Expr -> IRBuilderT ModuleBuilder Operand
+buildExpr :: Map.Map String Operand -> AST.Expr -> IRBuilderT ModuleBuilderE Operand
buildExpr _ (AST.Num a) = pure $ ConstantOperand (Float (Single a))
-buildExpr binds (AST.Var name) = pure $ binds Map.! name
+buildExpr binds (AST.Var n) = case binds Map.!? n of
+ Just x -> pure x
+ Nothing -> lift $ lift $ Left $ "'" <> n <> "' doesn't exist in scope"
buildExpr binds (AST.Call nameStr params) = do
paramOps <- mapM (buildExpr binds) params