- let mdl = buildModule "main" $ mapM buildAST asts
- 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
+ let eitherMdl = buildModuleT "main" $ mapM buildAST asts
+
+ case eitherMdl of
+ Left err -> die err
+ Right mdl' -> withContext $ \ctx ->
+ withHostTargetMachine $ \tm -> do
+ hPutStrLn stderr "Before optimisation:"
+ Text.hPutStrLn stderr (ppllvm mdl')
+
+ withModuleFromAST ctx mdl' $ \mdl -> do
+ let spec = defaultCuratedPassSetSpec { optLevel = Just 3 }
+ withPassManager spec $ flip runPassManager mdl
+ hPutStrLn stderr "After optimisation:"
+ Text.hPutStrLn stderr . ppllvm =<< moduleAST mdl
+ jit tm mdl >>= print
+
+jit :: TargetMachine -> Module -> IO Double
+jit tm mdl = do
+ loadLibraryPermanently (Just "stdlib.dylib") >>= guard . not
+ compLayerVar <- newEmptyMVar
+
+ -- jit time
+ withExecutionSession $ \exSession ->
+ withSymbolResolver exSession (SymbolResolver (symResolver compLayerVar)) $ \symResolverPtr ->
+ withObjectLinkingLayer exSession (const $ pure symResolverPtr) $ \linkingLayer ->
+ withModuleKey exSession $ \mdlKey ->
+ withIRCompileLayer linkingLayer tm $ \compLayer -> do
+ putMVar compLayerVar compLayer
+
+ withModule compLayer mdlKey mdl $ do
+ mangled <- mangleSymbol compLayer "expr"
+ Right (JITSymbol fPtr _) <- findSymbolIn compLayer mdlKey mangled False
+ mkFun (castPtrToFunPtr (wordPtrToPtr fPtr))
+
+ where symResolver clv sym = do
+ cl <- readMVar clv
+ ms <- findSymbol cl sym False
+ case ms of
+ Right s -> return (return s)
+ _ -> do
+ addr <- getSymbolAddressInProcess sym
+ return $ return (JITSymbol addr (JITSymbolFlags False False True True))
+
+evalProg :: AST.Program -> IO (Maybe Double)
+evalProg (AST.Program asts) = do
+ let eitherMdl = buildModuleT "main" $ mapM buildAST asts
+ case eitherMdl of
+ Left _ -> return Nothing
+ Right mdl' -> withContext $ \ctx ->
+ withHostTargetMachine $ \tm ->
+ withModuleFromAST ctx mdl' (fmap Just . jit tm)
+
+-- | Builds up programs at the top-level of an LLVM Module
+-- >>> evalProg (read "31 - 5")
+-- Just 26.0
+buildAST :: AST.AST -> ModuleBuilderE Operand