module VectUtils (
- paDictArgType
-) where
+ collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg,
+ collectAnnValBinders,
+ dataConTagZ, mkDataConTag, mkDataConTagLit,
+
+ newLocalVVar,
-#include "HsVersions.h"
+ mkBuiltinCo,
+ mkPADictType, mkPArrayType, mkPReprType,
+ parrayReprTyCon, parrayReprDataCon, mkVScrut,
+ prDFunOfTyCon,
+ paDictArgType, paDictOfType, paDFunType,
+ paMethod, mkPR, lengthPA, replicatePA, emptyPA, packPA, combinePA, liftPA,
+ polyAbstract, polyApply, polyVApply,
+ hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted,
+ buildClosure, buildClosures,
+ mkClosureApp
+) where
+
+import VectCore
import VectMonad
+import MkCore
+import CoreSyn
+import CoreUtils
+import Coercion
import Type
import TypeRep
+import TyCon
+import DataCon
import Var
+import MkId ( unwrapFamInstScrut )
+import TysWiredIn
+import BasicTypes ( Boxity(..) )
+import Literal ( Literal, mkMachInt )
+
+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]
+
+{-
+mkBuiltinTyConApps1 :: (Builtins -> TyCon) -> Type -> [Type] -> VM Type
+mkBuiltinTyConApps1 _ dft [] = return dft
+mkBuiltinTyConApps1 get_tc _ 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]
+
+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
+ r <- lookupPrimPArray tycon
+ case r of
+ Just arr -> return $ mkTyConApp arr []
+ Nothing -> cantVectorise "Primitive tycon not vectorised" (ppr tycon)
+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, arg_tys) <- parrayReprTyCon (exprType ve)
+ return ((ve, unwrapFamInstScrut tc arg_tys le), tc, arg_tys)
+
+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)
go ty k | Just k' <- kindView k = go ty k'
go ty (FunTy k1 k2)
= do
- tv <- newTyVar FSLIT("a") k1
+ tv <- newTyVar (fsLit "a") k1
mty1 <- go (TyVarTy tv) k1
case mty1 of
Just ty1 -> do
go ty k
| isLiftedTypeKind k
- = do
- tc <- builtin paDictTyCon
- return . Just $ TyConApp tc [ty]
+ = liftM Just (mkPADictType ty)
+
+ go _ _ = return Nothing
+
+paDictOfType :: Type -> VM CoreExpr
+paDictOfType ty = paDictOfTyApp ty_fn ty_args
+ where
+ (ty_fn, ty_args) = splitAppTys ty
+
+paDictOfTyApp :: Type -> [Type] -> VM 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)
+ paDFunApply dfun ty_args
+paDictOfTyApp (TyConApp tc _) ty_args
+ = do
+ dfun <- maybeCantVectoriseM "No PA dictionary for tycon" (ppr tc)
+ $ lookupTyConPA tc
+ 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
+ dicts <- mapM paDictOfType tys
+ return $ mkApps (mkTyApps dfun tys) dicts
+
+type PAMethod = (Builtins -> Var, String)
+
+pa_length, pa_replicate, pa_empty, pa_pack :: (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
+ = liftM Var
+ . maybeCantVectoriseM "No PA method" (text name <+> text "for" <+> ppr tycon)
+ $ lookupPrimMethod tycon name
+
+paMethod (method, _name) ty
+ = do
+ fn <- builtin method
+ dict <- paDictOfType ty
+ return $ mkApps (Var fn) [Type ty, dict]
+
+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 pa_replicate (exprType x))
+
+emptyPA :: Type -> VM CoreExpr
+emptyPA = paMethod pa_empty
+
+packPA :: Type -> CoreExpr -> CoreExpr -> CoreExpr -> VM CoreExpr
+packPA ty xs len sel = liftM (`mkApps` [xs, 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
+ = do
+ lty <- mkPArrayType vty
+ vv <- newLocalVar fs vty
+ lv <- newLocalVar fs lty
+ return (vv,lv)
+
+polyAbstract :: [TyVar] -> ((CoreExpr -> CoreExpr) -> 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_lams 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_lams mdicts = mkLams (tvs ++ [dict | Just dict <- mdicts])
+
+polyApply :: CoreExpr -> [Type] -> VM CoreExpr
+polyApply expr tys
+ = do
+ dicts <- mapM paDictOfType tys
+ return $ expr `mkTyApps` tys `mkApps` dicts
+
+polyVApply :: VExpr -> [Type] -> VM VExpr
+polyVApply expr tys
+ = do
+ dicts <- mapM paDictOfType tys
+ return $ mapVect (\e -> e `mkTyApps` tys `mkApps` dicts) expr
+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)
+ hoistBinding var expr
+ return var
+
+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 :: [TyVar] -> VM VExpr -> VM VExpr
+hoistPolyVExpr tvs p
+ = do
+ expr <- closedV . polyAbstract tvs $ \abstract ->
+ liftM (mapVect abstract) p
+ fn <- hoistVExpr expr
+ polyVApply (vVar fn) (mkTyVarTys tvs)
+
+takeHoisted :: VM [(Var, CoreExpr)]
+takeHoisted
+ = do
+ env <- readGEnv id
+ 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)
+ = do
+ dict <- paDictOfType env_ty
+ mkv <- builtin mkClosureVar
+ mkl <- builtin mkClosurePVar
+ 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 _ _ [] _ 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 <x1,...,xn> <f,f^>, aclo (Arr lc xs1 ... xsn) <f,f^>)
+-- where
+-- f = \env v -> case env of <x1,...,xn> -> e x1 ... xn v
+-- f^ = \env v -> case env of Arr l xs1 ... xsn -> e^ l x1 ... xn v
+--
+buildClosure :: [TyVar] -> [VVar] -> Type -> Type -> VM VExpr -> VM VExpr
+buildClosure tvs vars arg_ty res_ty mk_body
+ = do
+ (env_ty, env, bind) <- buildEnv vars
+ env_bndr <- newLocalVVar (fsLit "env") env_ty
+ arg_bndr <- newLocalVVar (fsLit "arg") arg_ty
+
+ fn <- hoistPolyVExpr tvs
+ $ do
+ lc <- builtin liftingContext
+ body <- mk_body
+ body' <- bind (vVar env_bndr)
+ (vVarApps lc body (vars ++ [arg_bndr]))
+ return (vLamsWithoutLC [env_bndr, arg_bndr] body')
+
+ mkClosure arg_ty res_ty env_ty fn env
+
+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 lc tys ls
+ return (ty, (venv, lenv),
+ \(venv,lenv) (vbody,lbody) ->
+ do
+ let vbody' = vbind venv vbody
+ lbody' <- lbind lenv lbody
+ return (vbody', lbody'))
+ where
+ (vs,ls) = unzip vvs
+ tys = map varType vs
+
+mkVectEnv :: [Type] -> [Var] -> (Type, CoreExpr, CoreExpr -> CoreExpr -> CoreExpr)
+mkVectEnv [] [] = (unitTy, Var unitDataConId, \_ body -> body)
+mkVectEnv [ty] [v] = (ty, Var v, \env body -> Let (NonRec v env) body)
+mkVectEnv tys vs = (ty, mkCoreTup (map Var vs),
+ \env body -> mkWildCase env ty (exprType body)
+ [(DataAlt (tupleCon Boxed (length vs)), vs, body)])
+ where
+ ty = mkCoreTupTy tys
+
+mkLiftEnv :: Var -> [Type] -> [Var] -> VM (CoreExpr, CoreExpr -> CoreExpr -> VM CoreExpr)
+mkLiftEnv lc [ty] [v]
+ = return (Var v, \env body ->
+ do
+ len <- lengthPA ty (Var v)
+ return . Let (NonRec v env)
+ $ Case len lc (exprType body) [(DEFAULT, [], body)])
+
+-- NOTE: this transparently deals with empty environments
+mkLiftEnv lc tys vs
+ = do
+ (env_tc, env_tyargs) <- parrayReprTyCon vty
+
+ bndrs <- if null vs then do
+ v <- newDummyVar unitTy
+ return [v]
+ else return vs
+ let [env_con] = tyConDataCons env_tc
+
+ env = Var (dataConWrapId env_con)
+ `mkTyApps` env_tyargs
+ `mkApps` (Var lc : args)
+
+ bind env body = let scrut = unwrapFamInstScrut env_tc env_tyargs env
+ in
+ return $ mkWildCase scrut (exprType scrut)
+ (exprType body)
+ [(DataAlt env_con, lc : bndrs, body)]
+ return (env, bind)
+ where
+ vty = mkCoreTupTy tys
- go ty k = return Nothing
+ args | null vs = [Var unitDataConId]
+ | otherwise = map Var vs
projects / ghc-hetmet.git / blobdiff