+++ /dev/null
-module VectUtils (
- collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg,
- collectAnnValBinders,
- dataConTagZ, mkDataConTag, mkDataConTagLit,
-
- newLocalVVar,
-
- mkBuiltinCo, voidType, mkWrapType,
- mkPADictType, mkPArrayType, mkPDataType, mkPReprType, mkPArray,
- mkBuiltinTyConApps, mkClosureTypes,
-
- pdataReprTyCon, pdataReprDataCon, mkVScrut,
- prDictOfType, prDFunOfTyCon,
- paDictArgType, paDictOfType, paDFunType,
- paMethod, wrapPR, replicatePD, emptyPD, packByTagPD,
- combinePD,
- liftPD,
- zipScalars, scalarClosure,
- polyAbstract, polyApply, polyVApply, polyArity
-) where
-import Vectorise.Monad
-import Vectorise.Vect
-import Vectorise.Builtins
-
-import CoreSyn
-import CoreUtils
-import Coercion
-import Type
-import TypeRep
-import TyCon
-import DataCon
-import Var
-import MkId
-import Literal
-import Outputable
-import FastString
-import Control.Monad
-
-
-collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type])
-collectAnnTypeArgs expr = go expr []
- where
- go (_, AnnApp f (_, AnnType ty)) tys = go f (ty : tys)
- go e tys = (e, tys)
-
-collectAnnTypeBinders :: AnnExpr Var ann -> ([Var], AnnExpr Var ann)
-collectAnnTypeBinders expr = go [] expr
- where
- go bs (_, AnnLam b e) | isTyVar b = go (b:bs) e
- go bs e = (reverse bs, e)
-
-collectAnnValBinders :: AnnExpr Var ann -> ([Var], AnnExpr Var ann)
-collectAnnValBinders expr = go [] expr
- where
- go bs (_, AnnLam b e) | isId b = go (b:bs) e
- go bs e = (reverse bs, e)
-
-isAnnTypeArg :: AnnExpr b ann -> Bool
-isAnnTypeArg (_, AnnType _) = True
-isAnnTypeArg _ = False
-
-dataConTagZ :: DataCon -> Int
-dataConTagZ con = dataConTag con - fIRST_TAG
-
-mkDataConTagLit :: DataCon -> Literal
-mkDataConTagLit = mkMachInt . toInteger . dataConTagZ
-
-mkDataConTag :: DataCon -> CoreExpr
-mkDataConTag = mkIntLitInt . dataConTagZ
-
-splitPrimTyCon :: Type -> Maybe TyCon
-splitPrimTyCon ty
- | Just (tycon, []) <- splitTyConApp_maybe ty
- , isPrimTyCon tycon
- = Just tycon
-
- | otherwise = Nothing
-
-mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type
-mkBuiltinTyConApp get_tc tys
- = do
- tc <- builtin get_tc
- return $ mkTyConApp tc tys
-
-mkBuiltinTyConApps :: (Builtins -> TyCon) -> [Type] -> Type -> VM Type
-mkBuiltinTyConApps get_tc tys ty
- = do
- tc <- builtin get_tc
- return $ foldr (mk tc) ty tys
- where
- mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
-
-voidType :: VM Type
-voidType = mkBuiltinTyConApp voidTyCon []
-
-mkWrapType :: Type -> VM Type
-mkWrapType ty = mkBuiltinTyConApp wrapTyCon [ty]
-
-
-mkClosureTypes :: [Type] -> Type -> VM Type
-mkClosureTypes = mkBuiltinTyConApps closureTyCon
-
-mkPReprType :: Type -> VM Type
-mkPReprType ty = mkBuiltinTyConApp preprTyCon [ty]
-
-mkPADictType :: Type -> VM Type
-mkPADictType ty = mkBuiltinTyConApp paTyCon [ty]
-
-mkPArrayType :: Type -> VM Type
-mkPArrayType ty
- | Just tycon <- splitPrimTyCon ty
- = do
- r <- lookupPrimPArray tycon
- case r of
- Just arr -> return $ mkTyConApp arr []
- Nothing -> cantVectorise "Primitive tycon not vectorised" (ppr tycon)
-mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty]
-
-mkPDataType :: Type -> VM Type
-mkPDataType ty = mkBuiltinTyConApp pdataTyCon [ty]
-
-mkPArray :: Type -> CoreExpr -> CoreExpr -> VM CoreExpr
-mkPArray ty len dat = do
- tc <- builtin parrayTyCon
- let [dc] = tyConDataCons tc
- return $ mkConApp dc [Type ty, len, dat]
-
-mkBuiltinCo :: (Builtins -> TyCon) -> VM Coercion
-mkBuiltinCo get_tc
- = do
- tc <- builtin get_tc
- return $ mkTyConApp tc []
-
-pdataReprTyCon :: Type -> VM (TyCon, [Type])
-pdataReprTyCon ty = builtin pdataTyCon >>= (`lookupFamInst` [ty])
-
-pdataReprDataCon :: Type -> VM (DataCon, [Type])
-pdataReprDataCon ty
- = do
- (tc, arg_tys) <- pdataReprTyCon ty
- let [dc] = tyConDataCons tc
- return (dc, arg_tys)
-
-mkVScrut :: VExpr -> VM (CoreExpr, CoreExpr, TyCon, [Type])
-mkVScrut (ve, le)
- = do
- (tc, arg_tys) <- pdataReprTyCon ty
- return (ve, unwrapFamInstScrut tc arg_tys le, tc, arg_tys)
- where
- ty = exprType ve
-
-prDFunOfTyCon :: TyCon -> VM CoreExpr
-prDFunOfTyCon tycon
- = liftM Var
- . maybeCantVectoriseM "No PR dictionary for tycon" (ppr tycon)
- $ lookupTyConPR tycon
-
-
-paDictArgType :: TyVar -> VM (Maybe Type)
-paDictArgType tv = go (TyVarTy tv) (tyVarKind tv)
- where
- go ty k | Just k' <- kindView k = go ty k'
- go ty (FunTy k1 k2)
- = do
- tv <- newTyVar (fsLit "a") k1
- mty1 <- go (TyVarTy tv) k1
- case mty1 of
- Just ty1 -> do
- mty2 <- go (AppTy ty (TyVarTy tv)) k2
- return $ fmap (ForAllTy tv . FunTy ty1) mty2
- Nothing -> go ty k2
-
- go ty k
- | isLiftedTypeKind k
- = liftM Just (mkPADictType ty)
-
- go _ _ = return Nothing
-
-
--- | Get the PA dictionary for some type, or `Nothing` if there isn't one.
-paDictOfType :: Type -> VM (Maybe CoreExpr)
-paDictOfType ty
- = paDictOfTyApp ty_fn ty_args
- where
- (ty_fn, ty_args) = splitAppTys ty
-
- paDictOfTyApp :: Type -> [Type] -> VM (Maybe CoreExpr)
- paDictOfTyApp ty_fn ty_args
- | Just ty_fn' <- coreView ty_fn
- = paDictOfTyApp ty_fn' ty_args
-
- paDictOfTyApp (TyVarTy tv) ty_args
- = do dfun <- maybeV (lookupTyVarPA tv)
- liftM Just $ paDFunApply dfun ty_args
-
- paDictOfTyApp (TyConApp tc _) ty_args
- = do mdfun <- lookupTyConPA tc
- case mdfun of
- Nothing
- -> pprTrace "VectUtils.paDictOfType"
- (vcat [ text "No PA dictionary"
- , text "for tycon: " <> ppr tc
- , text "in type: " <> ppr ty])
- $ return Nothing
-
- Just dfun -> liftM Just $ paDFunApply (Var dfun) ty_args
-
- paDictOfTyApp ty _
- = cantVectorise "Can't construct PA dictionary for type" (ppr ty)
-
-
-
-paDFunType :: TyCon -> VM Type
-paDFunType tc
- = do
- margs <- mapM paDictArgType tvs
- res <- mkPADictType (mkTyConApp tc arg_tys)
- return . mkForAllTys tvs
- $ mkFunTys [arg | Just arg <- margs] res
- where
- tvs = tyConTyVars tc
- arg_tys = mkTyVarTys tvs
-
-paDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
-paDFunApply dfun tys
- = do Just dicts <- liftM sequence $ mapM paDictOfType tys
- return $ mkApps (mkTyApps dfun tys) dicts
-
-
-paMethod :: (Builtins -> Var) -> String -> Type -> VM CoreExpr
-paMethod _ name ty
- | Just tycon <- splitPrimTyCon ty
- = liftM Var
- . maybeCantVectoriseM "No PA method" (text name <+> text "for" <+> ppr tycon)
- $ lookupPrimMethod tycon name
-
-paMethod method _ ty
- = do
- fn <- builtin method
- Just dict <- paDictOfType ty
- return $ mkApps (Var fn) [Type ty, dict]
-
-prDictOfType :: Type -> VM CoreExpr
-prDictOfType ty = prDictOfTyApp ty_fn ty_args
- where
- (ty_fn, ty_args) = splitAppTys ty
-
-prDictOfTyApp :: Type -> [Type] -> VM CoreExpr
-prDictOfTyApp ty_fn ty_args
- | Just ty_fn' <- coreView ty_fn = prDictOfTyApp ty_fn' ty_args
-prDictOfTyApp (TyConApp tc _) ty_args
- = do
- dfun <- liftM Var $ maybeV (lookupTyConPR tc)
- prDFunApply dfun ty_args
-prDictOfTyApp _ _ = noV
-
-prDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
-prDFunApply dfun tys
- = do
- dicts <- mapM prDictOfType tys
- return $ mkApps (mkTyApps dfun tys) dicts
-
-wrapPR :: Type -> VM CoreExpr
-wrapPR ty
- = do
- Just pa_dict <- paDictOfType ty
- pr_dfun <- prDFunOfTyCon =<< builtin wrapTyCon
- return $ mkApps pr_dfun [Type ty, pa_dict]
-
-replicatePD :: CoreExpr -> CoreExpr -> VM CoreExpr
-replicatePD len x = liftM (`mkApps` [len,x])
- (paMethod replicatePDVar "replicatePD" (exprType x))
-
-emptyPD :: Type -> VM CoreExpr
-emptyPD = paMethod emptyPDVar "emptyPD"
-
-packByTagPD :: Type -> CoreExpr -> CoreExpr -> CoreExpr -> CoreExpr
- -> VM CoreExpr
-packByTagPD ty xs len tags t
- = liftM (`mkApps` [xs, len, tags, t])
- (paMethod packByTagPDVar "packByTagPD" ty)
-
-combinePD :: Type -> CoreExpr -> CoreExpr -> [CoreExpr]
- -> VM CoreExpr
-combinePD ty len sel xs
- = liftM (`mkApps` (len : sel : xs))
- (paMethod (combinePDVar n) ("combine" ++ show n ++ "PD") ty)
- where
- n = length xs
-
--- | Like `replicatePD` but use the lifting context in the vectoriser state.
-liftPD :: CoreExpr -> VM CoreExpr
-liftPD x
- = do
- lc <- builtin liftingContext
- replicatePD (Var lc) x
-
-zipScalars :: [Type] -> Type -> VM CoreExpr
-zipScalars arg_tys res_ty
- = do
- scalar <- builtin scalarClass
- (dfuns, _) <- mapAndUnzipM (\ty -> lookupInst scalar [ty]) ty_args
- zipf <- builtin (scalarZip $ length arg_tys)
- return $ Var zipf `mkTyApps` ty_args `mkApps` map Var dfuns
- where
- ty_args = arg_tys ++ [res_ty]
-
-scalarClosure :: [Type] -> Type -> CoreExpr -> CoreExpr -> VM CoreExpr
-scalarClosure arg_tys res_ty scalar_fun array_fun
- = do
- ctr <- builtin (closureCtrFun $ length arg_tys)
- Just pas <- liftM sequence $ mapM paDictOfType (init arg_tys)
- return $ Var ctr `mkTyApps` (arg_tys ++ [res_ty])
- `mkApps` (pas ++ [scalar_fun, array_fun])
-
-newLocalVVar :: FastString -> Type -> VM VVar
-newLocalVVar fs vty
- = do
- lty <- mkPDataType vty
- vv <- newLocalVar fs vty
- lv <- newLocalVar fs lty
- return (vv,lv)
-
-polyAbstract :: [TyVar] -> ([Var] -> VM a) -> VM a
-polyAbstract tvs p
- = localV
- $ do
- mdicts <- mapM mk_dict_var tvs
- zipWithM_ (\tv -> maybe (defLocalTyVar tv)
- (defLocalTyVarWithPA tv . Var)) tvs mdicts
- p (mk_args mdicts)
- where
- mk_dict_var tv = do
- r <- paDictArgType tv
- case r of
- Just ty -> liftM Just (newLocalVar (fsLit "dPA") ty)
- Nothing -> return Nothing
-
- mk_args mdicts = [dict | Just dict <- mdicts]
-
-polyArity :: [TyVar] -> VM Int
-polyArity tvs = do
- tys <- mapM paDictArgType tvs
- return $ length [() | Just _ <- tys]
-
-polyApply :: CoreExpr -> [Type] -> VM CoreExpr
-polyApply expr tys
- = do Just dicts <- liftM sequence $ mapM paDictOfType tys
- return $ expr `mkTyApps` tys `mkApps` dicts
-
-polyVApply :: VExpr -> [Type] -> VM VExpr
-polyVApply expr tys
- = do Just dicts <- liftM sequence $ mapM paDictOfType tys
- return $ mapVect (\e -> e `mkTyApps` tys `mkApps` dicts) expr
-
-
-{-
-boxExpr :: Type -> VExpr -> VM VExpr
-boxExpr ty (vexpr, lexpr)
- | Just (tycon, []) <- splitTyConApp_maybe ty
- , isUnLiftedTyCon tycon
- = do
- r <- lookupBoxedTyCon tycon
- case r of
- Just tycon' -> let [dc] = tyConDataCons tycon'
- in
- return (mkConApp dc [vexpr], lexpr)
- Nothing -> return (vexpr, lexpr)
--}
-
-
projects / ghc-hetmet.git / blobdiff