X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fvectorise%2FVectUtils.hs;h=a540b4d10c20102fa5c609d376e032ce696cb45d;hb=7c737416e30137e7053b4bcd0fdd563f07fa43b0;hp=73c986b4200d6419bd51ab4940099a60f085fd04;hpb=0a21de62e274acc8e8e260298da4f6c1ee18ecc2;p=ghc-hetmet.git diff --git a/compiler/vectorise/VectUtils.hs b/compiler/vectorise/VectUtils.hs index 73c986b..a540b4d 100644 --- a/compiler/vectorise/VectUtils.hs +++ b/compiler/vectorise/VectUtils.hs @@ -1,13 +1,28 @@ +{-# OPTIONS -w #-} +-- The above warning supression flag is a temporary kludge. +-- While working on this module you are encouraged to remove it and fix +-- any warnings in the module. See +-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings +-- for details + module VectUtils ( collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg, - splitClosureTy, - mkPADictType, mkPArrayType, - paDictArgType, paDictOfType, - paMethod, lengthPA, replicatePA, emptyPA, + collectAnnValBinders, + dataConTagZ, mkDataConTag, mkDataConTagLit, + + newLocalVVar, + + mkBuiltinCo, + mkPADictType, mkPArrayType, mkPReprType, + + parrayReprTyCon, parrayReprDataCon, mkVScrut, + prDFunOfTyCon, + paDictArgType, paDictOfType, paDFunType, + paMethod, mkPR, lengthPA, replicatePA, emptyPA, packPA, combinePA, liftPA, polyAbstract, polyApply, polyVApply, - lookupPArrayFamInst, - hoistExpr, hoistPolyVExpr, takeHoisted, - buildClosure + hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted, + buildClosure, buildClosures, + mkClosureApp ) where #include "HsVersions.h" @@ -18,21 +33,26 @@ 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 TysPrim ( intPrimTy ) import BasicTypes ( Boxity(..) ) +import Literal ( Literal, mkMachInt ) import Outputable import FastString -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 +66,104 @@ 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 +dataConTagZ :: DataCon -> Int +dataConTagZ con = dataConTag con - fIRST_TAG -splitClosureTy :: Type -> (Type, Type) -splitClosureTy ty - | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty - , isClosureTyCon tc - = (arg_ty, res_ty) +mkDataConTagLit :: DataCon -> Literal +mkDataConTagLit = mkMachInt . toInteger . dataConTagZ - | otherwise = pprPanic "splitClosureTy" (ppr ty) +mkDataConTag :: DataCon -> CoreExpr +mkDataConTag = mkIntLitInt . dataConTagZ -isPArrayTyCon :: TyCon -> Bool -isPArrayTyCon tc = tyConName tc == parrayTyConName +splitPrimTyCon :: Type -> Maybe TyCon +splitPrimTyCon ty + | Just (tycon, []) <- splitTyConApp_maybe ty + , isPrimTyCon tycon + = Just tycon -splitPArrayTy :: Type -> Type -splitPArrayTy ty - | Just (tc, [arg_ty]) <- splitTyConApp_maybe ty - , isPArrayTyCon tc - = arg_ty + | otherwise = Nothing - | 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 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 paDictTyCon - return $ TyConApp tc [ty] + 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] + +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 + | Just tycon <- splitPrimTyCon ty + = do + arr <- traceMaybeV "mkPArrayType" (ppr tycon) + $ lookupPrimPArray tycon + return $ mkTyConApp arr [] +mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty] + +mkBuiltinCo :: (Builtins -> TyCon) -> VM Coercion +mkBuiltinCo get_tc + = do + tc <- builtin get_tc + return $ mkTyConApp tc [] + +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 <- builtin parrayTyCon - return $ TyConApp tc [ty] + (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)) paDictArgType :: TyVar -> VM (Maybe Type) paDictArgType tv = go (TyVarTy tv) (tyVarKind tv) @@ -118,35 +199,82 @@ 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 dicts <- mapM paDictOfType tys return $ mkApps (mkTyApps dfun tys) dicts -paMethod :: (Builtins -> Var) -> Type -> VM CoreExpr -paMethod method ty +type PAMethod = (Builtins -> Var, String) + +pa_length = (lengthPAVar, "lengthPA") +pa_replicate = (replicatePAVar, "replicatePA") +pa_empty = (emptyPAVar, "emptyPA") +pa_pack = (packPAVar, "packPA") + +paMethod :: PAMethod -> Type -> VM CoreExpr +paMethod (method, name) ty + | Just tycon <- splitPrimTyCon ty + = do + fn <- traceMaybeV "paMethod" (ppr tycon <+> text name) + $ lookupPrimMethod tycon name + return (Var fn) + +paMethod (method, name) ty = do fn <- builtin method dict <- paDictOfType ty return $ mkApps (Var fn) [Type ty, dict] -lengthPA :: CoreExpr -> VM CoreExpr -lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty) - where - ty = splitPArrayTy (exprType x) +mkPR :: Type -> VM CoreExpr +mkPR ty + = do + fn <- builtin mkPRVar + dict <- paDictOfType ty + return $ mkApps (Var fn) [Type ty, dict] + +lengthPA :: Type -> CoreExpr -> VM CoreExpr +lengthPA ty x = liftM (`App` x) (paMethod pa_length ty) replicatePA :: CoreExpr -> CoreExpr -> VM CoreExpr replicatePA len x = liftM (`mkApps` [len,x]) - (paMethod replicatePAVar (exprType x)) + (paMethod pa_replicate (exprType x)) emptyPA :: Type -> VM CoreExpr -emptyPA = paMethod emptyPAVar +emptyPA = paMethod pa_empty + +packPA :: Type -> CoreExpr -> CoreExpr -> CoreExpr -> VM CoreExpr +packPA ty xs len sel = liftM (`mkApps` [len, sel]) + (paMethod pa_pack ty) + +combinePA :: Type -> CoreExpr -> CoreExpr -> CoreExpr -> [CoreExpr] + -> VM CoreExpr +combinePA ty len sel is xs + = liftM (`mkApps` (len : sel : is : xs)) + (paMethod (combinePAVar n, "combine" ++ show n ++ "PA") ty) + where + n = length xs + +liftPA :: CoreExpr -> VM CoreExpr +liftPA x + = do + lc <- builtin liftingContext + replicatePA (Var lc) x newLocalVVar :: FastString -> Type -> VM VVar newLocalVVar fs vty @@ -184,30 +312,31 @@ 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)] @@ -217,6 +346,18 @@ takeHoisted setGEnv $ env { global_bindings = [] } return $ global_bindings env +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) + mkClosure :: Type -> Type -> Type -> VExpr -> VExpr -> VM VExpr mkClosure arg_ty res_ty env_ty (vfn,lfn) (venv,lenv) @@ -227,32 +368,58 @@ 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 :: Type -> Type -> VExpr -> VExpr -> VM VExpr +mkClosureApp arg_ty res_ty (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]) + +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 +440,28 @@ 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) + len <- lengthPA ty (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