X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fvectorise%2FVectUtils.hs;h=a1f554db50e8d1de4157912e0a6f554a138966d9;hb=430cdcde07075d7e2a6d81578e8b889b53bf24b7;hp=73c986b4200d6419bd51ab4940099a60f085fd04;hpb=0a21de62e274acc8e8e260298da4f6c1ee18ecc2;p=ghc-hetmet.git diff --git a/compiler/vectorise/VectUtils.hs b/compiler/vectorise/VectUtils.hs index 73c986b..a1f554d 100644 --- a/compiler/vectorise/VectUtils.hs +++ b/compiler/vectorise/VectUtils.hs @@ -1,13 +1,21 @@ module VectUtils ( collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg, + collectAnnValBinders, + mkDataConTag, splitClosureTy, - mkPADictType, mkPArrayType, - paDictArgType, paDictOfType, - paMethod, lengthPA, replicatePA, emptyPA, + + TyConRepr(..), mkTyConRepr, + mkToArrPRepr, mkFromArrPRepr, + mkPADictType, mkPArrayType, mkPReprType, + + parrayCoerce, parrayReprTyCon, parrayReprDataCon, mkVScrut, + prDFunOfTyCon, prCoerce, + paDictArgType, paDictOfType, paDFunType, + paMethod, mkPR, lengthPA, replicatePA, emptyPA, liftPA, polyAbstract, polyApply, polyVApply, - lookupPArrayFamInst, - hoistExpr, hoistPolyVExpr, takeHoisted, - buildClosure + hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted, + buildClosure, buildClosures, + mkClosureApp ) where #include "HsVersions.h" @@ -18,21 +26,25 @@ import VectMonad import DsUtils import CoreSyn import CoreUtils +import Coercion import Type import TypeRep import TyCon -import DataCon ( dataConWrapId ) +import DataCon import Var import Id ( mkWildId ) import MkId ( unwrapFamInstScrut ) +import Name ( Name ) import PrelNames import TysWiredIn import BasicTypes ( Boxity(..) ) import Outputable import FastString +import Maybes ( orElse ) -import Control.Monad ( liftM, zipWithM_ ) +import Data.List ( zipWith4 ) +import Control.Monad ( liftM, liftM2, zipWithM_ ) collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type]) collectAnnTypeArgs expr = go expr [] @@ -46,43 +58,210 @@ collectAnnTypeBinders expr = go [] expr 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 t) = True isAnnTypeArg _ = False -isClosureTyCon :: TyCon -> Bool -isClosureTyCon tc = tyConName tc == closureTyConName +mkDataConTag :: DataCon -> CoreExpr +mkDataConTag dc = mkConApp intDataCon [mkIntLitInt $ dataConTag dc] -splitClosureTy :: Type -> (Type, Type) -splitClosureTy ty - | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty - , isClosureTyCon tc - = (arg_ty, res_ty) +splitUnTy :: String -> Name -> Type -> Type +splitUnTy s name ty + | Just (tc, [ty']) <- splitTyConApp_maybe ty + , tyConName tc == name + = ty' + + | otherwise = pprPanic s (ppr ty) + +splitBinTy :: String -> Name -> Type -> (Type, Type) +splitBinTy s name ty + | Just (tc, [ty1, ty2]) <- splitTyConApp_maybe ty + , tyConName tc == name + = (ty1, ty2) - | otherwise = pprPanic "splitClosureTy" (ppr ty) + | otherwise = pprPanic s (ppr ty) -isPArrayTyCon :: TyCon -> Bool -isPArrayTyCon tc = tyConName tc == parrayTyConName +splitFixedTyConApp :: TyCon -> Type -> [Type] +splitFixedTyConApp tc ty + | Just (tc', tys) <- splitTyConApp_maybe ty + , tc == tc' + = tys + + | otherwise = pprPanic "splitFixedTyConApp" (ppr tc <+> ppr ty) + +splitClosureTy :: Type -> (Type, Type) +splitClosureTy = splitBinTy "splitClosureTy" closureTyConName splitPArrayTy :: Type -> Type -splitPArrayTy ty - | Just (tc, [arg_ty]) <- splitTyConApp_maybe ty - , isPArrayTyCon tc - = arg_ty +splitPArrayTy = splitUnTy "splitPArrayTy" parrayTyConName - | otherwise = pprPanic "splitPArrayTy" (ppr ty) +mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type +mkBuiltinTyConApp get_tc tys + = do + tc <- builtin get_tc + return $ mkTyConApp tc tys -mkPADictType :: Type -> VM Type -mkPADictType ty +mkBuiltinTyConApps :: (Builtins -> TyCon) -> [Type] -> Type -> VM Type +mkBuiltinTyConApps get_tc tys ty = do - tc <- builtin paDictTyCon - return $ TyConApp tc [ty] + tc <- builtin get_tc + return $ foldr (mk tc) ty tys + where + mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2] + +mkBuiltinTyConApps1 :: (Builtins -> TyCon) -> Type -> [Type] -> VM Type +mkBuiltinTyConApps1 get_tc dft [] = return dft +mkBuiltinTyConApps1 get_tc dft tys + = do + tc <- builtin get_tc + case tys of + [] -> pprPanic "mkBuiltinTyConApps1" (ppr tc) + _ -> return $ foldr1 (mk tc) tys + where + mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2] + +data TyConRepr = TyConRepr { + repr_tyvars :: [TyVar] + , repr_tys :: [[Type]] + + , repr_prod_tycons :: [Maybe TyCon] + , repr_prod_data_cons :: [Maybe DataCon] + , repr_prod_tys :: [Type] + , repr_sum_tycon :: Maybe TyCon + , repr_sum_data_cons :: [DataCon] + , repr_type :: Type + } + +mkTyConRepr :: TyCon -> VM TyConRepr +mkTyConRepr vect_tc + = do + prod_tycons <- mapM (mk_tycon prodTyCon) rep_tys + let prod_tys = zipWith mk_tc_app_maybe prod_tycons rep_tys + sum_tycon <- mk_tycon sumTyCon prod_tys + + return $ TyConRepr { + repr_tyvars = tyvars + , repr_tys = rep_tys + + , repr_prod_tycons = prod_tycons + , repr_prod_data_cons = map (fmap mk_single_datacon) prod_tycons + , repr_prod_tys = prod_tys + , repr_sum_tycon = sum_tycon + , repr_sum_data_cons = fmap tyConDataCons sum_tycon `orElse` [] + , repr_type = mk_tc_app_maybe sum_tycon prod_tys + } + where + tyvars = tyConTyVars vect_tc + data_cons = tyConDataCons vect_tc + rep_tys = map dataConRepArgTys data_cons + + mk_tycon get_tc tys + | n > 1 = builtin (Just . get_tc n) + | otherwise = return Nothing + where n = length tys + + mk_single_datacon tc | [dc] <- tyConDataCons tc = dc + + mk_tc_app_maybe Nothing [] = unitTy + mk_tc_app_maybe Nothing [ty] = ty + mk_tc_app_maybe (Just tc) tys = mkTyConApp tc tys + +mkToArrPRepr :: CoreExpr -> CoreExpr -> [[CoreExpr]] -> VM CoreExpr +mkToArrPRepr len sel ess + = do + let mk_sum [(expr, ty)] = return (expr, ty) + mk_sum es + = do + sum_tc <- builtin . sumTyCon $ length es + (sum_rtc, _) <- parrayReprTyCon (mkTyConApp sum_tc tys) + let [sum_rdc] = tyConDataCons sum_rtc + + return (mkConApp sum_rdc (map Type tys ++ (len : sel : exprs)), + mkTyConApp sum_tc tys) + where + (exprs, tys) = unzip es + + mk_prod [expr] = return (expr, splitPArrayTy (exprType expr)) + mk_prod exprs + = do + prod_tc <- builtin . prodTyCon $ length exprs + (prod_rtc, _) <- parrayReprTyCon (mkTyConApp prod_tc tys) + let [prod_rdc] = tyConDataCons prod_rtc + + return (mkConApp prod_rdc (map Type tys ++ (len : exprs)), + mkTyConApp prod_tc tys) + where + tys = map (splitPArrayTy . exprType) exprs + + liftM fst (mk_sum =<< mapM mk_prod ess) + +mkFromArrPRepr :: CoreExpr -> Type -> Var -> Var -> [[Var]] -> CoreExpr + -> VM CoreExpr +mkFromArrPRepr scrut res_ty len sel vars res + = return (Var unitDataConId) + +mkClosureType :: Type -> Type -> VM Type +mkClosureType arg_ty res_ty = mkBuiltinTyConApp closureTyCon [arg_ty, res_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 +mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty] + +parrayCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr +parrayCoerce repr_tc args expr + | Just arg_co <- tyConFamilyCoercion_maybe repr_tc = do - tc <- builtin parrayTyCon - return $ TyConApp tc [ty] + parray <- builtin parrayTyCon + + let co = mkAppCoercion (mkTyConApp parray []) + (mkSymCoercion (mkTyConApp arg_co args)) + + return $ mkCoerce co expr + +parrayReprTyCon :: Type -> VM (TyCon, [Type]) +parrayReprTyCon ty = builtin parrayTyCon >>= (`lookupFamInst` [ty]) + +parrayReprDataCon :: Type -> VM (DataCon, [Type]) +parrayReprDataCon ty + = do + (tc, arg_tys) <- parrayReprTyCon ty + let [dc] = tyConDataCons tc + return (dc, arg_tys) + +mkVScrut :: VExpr -> VM (VExpr, TyCon, [Type]) +mkVScrut (ve, le) + = do + (tc, arg_tys) <- parrayReprTyCon (exprType ve) + return ((ve, unwrapFamInstScrut tc arg_tys le), tc, arg_tys) + +prDFunOfTyCon :: TyCon -> VM CoreExpr +prDFunOfTyCon tycon + = liftM Var (traceMaybeV "prDictOfTyCon" (ppr tycon) (lookupTyConPR tycon)) + +prCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr +prCoerce repr_tc args expr + | Just arg_co <- tyConFamilyCoercion_maybe repr_tc + = do + pr_tc <- builtin prTyCon + + let co = mkAppCoercion (mkTyConApp pr_tc []) + (mkSymCoercion (mkTyConApp arg_co args)) + + return $ mkCoerce co expr paDictArgType :: TyVar -> VM (Maybe Type) paDictArgType tv = go (TyVarTy tv) (tyVarKind tv) @@ -118,11 +297,21 @@ paDictOfTyApp (TyVarTy tv) ty_args paDFunApply dfun ty_args paDictOfTyApp (TyConApp tc _) ty_args = do - pa_class <- builtin paClass - (dfun, ty_args') <- lookupInst pa_class [TyConApp tc ty_args] - paDFunApply (Var dfun) ty_args' + dfun <- traceMaybeV "paDictOfTyApp" (ppr tc) (lookupTyConPA tc) + paDFunApply (Var dfun) ty_args paDictOfTyApp ty ty_args = pprPanic "paDictOfTyApp" (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 @@ -136,6 +325,9 @@ paMethod method ty dict <- paDictOfType ty return $ mkApps (Var fn) [Type ty, dict] +mkPR :: Type -> VM CoreExpr +mkPR = paMethod mkPRVar + lengthPA :: CoreExpr -> VM CoreExpr lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty) where @@ -148,6 +340,12 @@ replicatePA len x = liftM (`mkApps` [len,x]) emptyPA :: Type -> VM CoreExpr emptyPA = paMethod emptyPAVar +liftPA :: CoreExpr -> VM CoreExpr +liftPA x + = do + lc <- builtin liftingContext + replicatePA (Var lc) x + newLocalVVar :: FastString -> Type -> VM VVar newLocalVVar fs vty = do @@ -184,30 +382,31 @@ polyVApply expr tys dicts <- mapM paDictOfType tys return $ mapVect (\e -> e `mkTyApps` tys `mkApps` dicts) expr -lookupPArrayFamInst :: Type -> VM (TyCon, [Type]) -lookupPArrayFamInst ty = builtin parrayTyCon >>= (`lookupFamInst` [ty]) +hoistBinding :: Var -> CoreExpr -> VM () +hoistBinding v e = updGEnv $ \env -> + env { global_bindings = (v,e) : global_bindings env } hoistExpr :: FastString -> CoreExpr -> VM Var hoistExpr fs expr = do var <- newLocalVar fs (exprType expr) - updGEnv $ \env -> - env { global_bindings = (var, expr) : global_bindings env } + hoistBinding var expr return var -hoistVExpr :: FastString -> VExpr -> VM VVar -hoistVExpr fs (ve, le) +hoistVExpr :: VExpr -> VM VVar +hoistVExpr (ve, le) = do + fs <- getBindName vv <- hoistExpr ('v' `consFS` fs) ve lv <- hoistExpr ('l' `consFS` fs) le return (vv, lv) -hoistPolyVExpr :: FastString -> [TyVar] -> VM VExpr -> VM VExpr -hoistPolyVExpr fs tvs p +hoistPolyVExpr :: [TyVar] -> VM VExpr -> VM VExpr +hoistPolyVExpr tvs p = do expr <- closedV . polyAbstract tvs $ \abstract -> liftM (mapVect abstract) p - fn <- hoistVExpr fs expr + fn <- hoistVExpr expr polyVApply (vVar fn) (mkTyVarTys tvs) takeHoisted :: VM [(Var, CoreExpr)] @@ -217,7 +416,6 @@ takeHoisted setGEnv $ env { global_bindings = [] } return $ global_bindings env - mkClosure :: Type -> Type -> Type -> VExpr -> VExpr -> VM VExpr mkClosure arg_ty res_ty env_ty (vfn,lfn) (venv,lenv) = do @@ -227,32 +425,60 @@ mkClosure arg_ty res_ty env_ty (vfn,lfn) (venv,lenv) return (Var mkv `mkTyApps` [arg_ty, res_ty, env_ty] `mkApps` [dict, vfn, lfn, venv], Var mkl `mkTyApps` [arg_ty, res_ty, env_ty] `mkApps` [dict, vfn, lfn, lenv]) +mkClosureApp :: VExpr -> VExpr -> VM VExpr +mkClosureApp (vclo, lclo) (varg, larg) + = do + vapply <- builtin applyClosureVar + lapply <- builtin applyClosurePVar + return (Var vapply `mkTyApps` [arg_ty, res_ty] `mkApps` [vclo, varg], + Var lapply `mkTyApps` [arg_ty, res_ty] `mkApps` [lclo, larg]) + where + (arg_ty, res_ty) = splitClosureTy (exprType vclo) + +buildClosures :: [TyVar] -> [VVar] -> [Type] -> Type -> VM VExpr -> VM VExpr +buildClosures tvs vars [] res_ty mk_body + = mk_body +buildClosures tvs vars [arg_ty] res_ty mk_body + = buildClosure tvs vars arg_ty res_ty mk_body +buildClosures tvs vars (arg_ty : arg_tys) res_ty mk_body + = do + res_ty' <- mkClosureTypes arg_tys res_ty + arg <- newLocalVVar FSLIT("x") arg_ty + buildClosure tvs vars arg_ty res_ty' + . hoistPolyVExpr tvs + $ do + lc <- builtin liftingContext + clo <- buildClosures tvs (vars ++ [arg]) arg_tys res_ty mk_body + return $ vLams lc (vars ++ [arg]) clo + -- (clo , aclo (Arr lc xs1 ... xsn) ) -- where -- f = \env v -> case env of -> e x1 ... xn v -- f^ = \env v -> case env of Arr l xs1 ... xsn -> e^ l x1 ... xn v - -buildClosure :: [TyVar] -> Var -> [VVar] -> Type -> Type -> VM VExpr -> VM VExpr -buildClosure tvs lv vars arg_ty res_ty mk_body +-- +buildClosure :: [TyVar] -> [VVar] -> Type -> Type -> VM VExpr -> VM VExpr +buildClosure tvs vars arg_ty res_ty mk_body = do - (env_ty, env, bind) <- buildEnv lv vars + (env_ty, env, bind) <- buildEnv vars env_bndr <- newLocalVVar FSLIT("env") env_ty arg_bndr <- newLocalVVar FSLIT("arg") arg_ty - fn <- hoistPolyVExpr FSLIT("fn") tvs + fn <- hoistPolyVExpr tvs $ do + lc <- builtin liftingContext body <- mk_body body' <- bind (vVar env_bndr) - (mkVVarApps lv body (vars ++ [arg_bndr])) - return (mkVLams [env_bndr, arg_bndr] body') + (vVarApps lc body (vars ++ [arg_bndr])) + return (vLamsWithoutLC [env_bndr, arg_bndr] body') mkClosure arg_ty res_ty env_ty fn env -buildEnv :: Var -> [VVar] -> VM (Type, VExpr, VExpr -> VExpr -> VM VExpr) -buildEnv lv vvs +buildEnv :: [VVar] -> VM (Type, VExpr, VExpr -> VExpr -> VM VExpr) +buildEnv vvs = do + lc <- builtin liftingContext let (ty, venv, vbind) = mkVectEnv tys vs - (lenv, lbind) <- mkLiftEnv lv tys ls + (lenv, lbind) <- mkLiftEnv lc tys ls return (ty, (venv, lenv), \(venv,lenv) (vbody,lbody) -> do @@ -273,28 +499,28 @@ mkVectEnv tys vs = (ty, mkCoreTup (map Var vs), ty = mkCoreTupTy tys mkLiftEnv :: Var -> [Type] -> [Var] -> VM (CoreExpr, CoreExpr -> CoreExpr -> VM CoreExpr) -mkLiftEnv lv [ty] [v] +mkLiftEnv lc [ty] [v] = return (Var v, \env body -> do len <- lengthPA (Var v) return . Let (NonRec v env) - $ Case len lv (exprType body) [(DEFAULT, [], body)]) + $ Case len lc (exprType body) [(DEFAULT, [], body)]) -- NOTE: this transparently deals with empty environments -mkLiftEnv lv tys vs +mkLiftEnv lc tys vs = do - (env_tc, env_tyargs) <- lookupPArrayFamInst vty + (env_tc, env_tyargs) <- parrayReprTyCon vty let [env_con] = tyConDataCons env_tc env = Var (dataConWrapId env_con) `mkTyApps` env_tyargs - `mkVarApps` (lv : vs) + `mkVarApps` (lc : vs) bind env body = let scrut = unwrapFamInstScrut env_tc env_tyargs env in return $ Case scrut (mkWildId (exprType scrut)) (exprType body) - [(DataAlt env_con, lv : bndrs, body)] + [(DataAlt env_con, lc : bndrs, body)] return (env, bind) where vty = mkCoreTupTy tys