module VectUtils (
collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg,
collectAnnValBinders,
- mkDataConTag,
- splitClosureTy,
- mkPlusType, mkPlusTypes, mkCrossType, mkCrossTypes, mkEmbedType,
- mkPlusAlts, mkCrosses, mkEmbed,
- mkPADictType, mkPArrayType,
- parrayReprTyCon, parrayReprDataCon, mkVScrut,
- paDictArgType, paDictOfType, paDFunType,
- paMethod, lengthPA, replicatePA, emptyPA, liftPA,
- polyAbstract, polyApply, polyVApply,
- hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted,
- buildClosure, buildClosures,
- mkClosureApp
-) where
+ dataConTagZ, mkDataConTag, mkDataConTagLit,
+
+ newLocalVVar,
-#include "HsVersions.h"
+ mkBuiltinCo, voidType, mkWrapType,
+ mkPADictType, mkPArrayType, mkPDataType, mkPReprType, mkPArray,
+ mkBuiltinTyConApps, mkClosureTypes,
-import VectCore
-import VectMonad
+ 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 DsUtils
import CoreSyn
import CoreUtils
+import Coercion
import Type
import TypeRep
import TyCon
-import DataCon ( DataCon, dataConWrapId, dataConTag )
+import DataCon
import Var
-import Id ( mkWildId )
-import MkId ( unwrapFamInstScrut )
-import PrelNames
-import TysWiredIn
-import BasicTypes ( Boxity(..) )
-
+import MkId
+import Literal
import Outputable
import FastString
+import Control.Monad
-import Control.Monad ( liftM, zipWithM_ )
collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type])
collectAnnTypeArgs expr = go expr []
go bs e = (reverse bs, e)
isAnnTypeArg :: AnnExpr b ann -> Bool
-isAnnTypeArg (_, AnnType t) = True
+isAnnTypeArg (_, AnnType _) = True
isAnnTypeArg _ = False
-mkDataConTag :: DataCon -> CoreExpr
-mkDataConTag dc = mkConApp intDataCon [mkIntLitInt $ dataConTag dc]
-
-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)
-
-isPArrayTyCon :: TyCon -> Bool
-isPArrayTyCon tc = tyConName tc == parrayTyConName
+mkDataConTag :: DataCon -> CoreExpr
+mkDataConTag = mkIntLitInt . dataConTagZ
-splitPArrayTy :: Type -> Type
-splitPArrayTy ty
- | Just (tc, [arg_ty]) <- splitTyConApp_maybe ty
- , isPArrayTyCon tc
- = arg_ty
+splitPrimTyCon :: Type -> Maybe TyCon
+splitPrimTyCon ty
+ | Just (tycon, []) <- splitTyConApp_maybe ty
+ , isPrimTyCon tycon
+ = Just tycon
- | otherwise = pprPanic "splitPArrayTy" (ppr ty)
+ | otherwise = Nothing
mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type
mkBuiltinTyConApp get_tc 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]
-
-mkBuiltinDataConApp :: (Builtins -> DataCon) -> [CoreExpr] -> VM CoreExpr
-mkBuiltinDataConApp get_dc args
- = do
- dc <- builtin get_dc
- return $ mkConApp dc args
-
-mkPlusType :: Type -> Type -> VM Type
-mkPlusType ty1 ty2 = mkBuiltinTyConApp plusTyCon [ty1, ty2]
-
-mkPlusTypes :: Type -> [Type] -> VM Type
-mkPlusTypes = mkBuiltinTyConApps1 plusTyCon
+voidType :: VM Type
+voidType = mkBuiltinTyConApp voidTyCon []
-mkPlusAlts :: [CoreExpr] -> VM [CoreExpr]
-mkPlusAlts [] = return []
-mkPlusAlts exprs
- = do
- plus_tc <- builtin plusTyCon
- left_dc <- builtin leftDataCon
- right_dc <- builtin rightDataCon
-
- let go [expr] = ([expr], exprType expr)
- go (expr : exprs)
- | (alts, right_ty) <- go exprs
- = (mkConApp left_dc [Type left_ty, Type right_ty, expr]
- : [mkConApp right_dc [Type left_ty, Type right_ty, alt]
- | alt <- alts],
- mkTyConApp plus_tc [left_ty, right_ty])
- where
- left_ty = exprType expr
-
- return . fst $ go exprs
-
-mkCrossType :: Type -> Type -> VM Type
-mkCrossType ty1 ty2 = mkBuiltinTyConApp crossTyCon [ty1, ty2]
-
-mkCrossTypes :: Type -> [Type] -> VM Type
-mkCrossTypes = mkBuiltinTyConApps1 crossTyCon
-
-mkCrosses :: [CoreExpr] -> VM CoreExpr
-mkCrosses [] = return (Var unitDataConId)
-mkCrosses exprs
- = do
- cross_tc <- builtin crossTyCon
- cross_dc <- builtin crossDataCon
+mkWrapType :: Type -> VM Type
+mkWrapType ty = mkBuiltinTyConApp wrapTyCon [ty]
- let mk (left, left_ty) (right, right_ty)
- = (mkConApp cross_dc [Type left_ty, Type right_ty, left, right],
- mkTyConApp cross_tc [left_ty, right_ty])
-
- return . fst
- $ foldr1 mk [(expr, exprType expr) | expr <- exprs]
-
-mkEmbedType :: Type -> VM Type
-mkEmbedType ty = mkBuiltinTyConApp embedTyCon [ty]
-
-mkEmbed :: CoreExpr -> VM CoreExpr
-mkEmbed expr = mkBuiltinDataConApp embedDataCon
- [Type $ exprType expr, expr]
-
-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]
-parrayReprTyCon :: Type -> VM (TyCon, [Type])
-parrayReprTyCon ty = builtin parrayTyCon >>= (`lookupFamInst` [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]
-parrayReprDataCon :: Type -> VM (DataCon, [Type])
-parrayReprDataCon ty
+mkBuiltinCo :: (Builtins -> TyCon) -> VM Coercion
+mkBuiltinCo get_tc
= do
- (tc, arg_tys) <- parrayReprTyCon ty
+ 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 (VExpr, TyCon, [Type])
+mkVScrut :: VExpr -> VM (CoreExpr, CoreExpr, TyCon, [Type])
mkVScrut (ve, le)
= do
- (tc, arg_tys) <- parrayReprTyCon (exprType ve)
- return ((ve, unwrapFamInstScrut tc arg_tys le), tc, arg_tys)
+ (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)
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
| isLiftedTypeKind k
= liftM Just (mkPADictType ty)
- go ty k = return Nothing
+ go _ _ = return Nothing
+
-paDictOfType :: Type -> VM CoreExpr
-paDictOfType ty = paDictOfTyApp ty_fn ty_args
+-- | 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 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 <- traceMaybeV "paDictOfTyApp" (ppr tc) (lookupTyConPA tc)
- paDFunApply (Var dfun) ty_args
-paDictOfTyApp ty ty_args = pprPanic "paDictOfTyApp" (ppr 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
paDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
paDFunApply dfun tys
- = do
- dicts <- mapM paDictOfType tys
+ = do Just dicts <- liftM sequence $ mapM paDictOfType tys
return $ mkApps (mkTyApps dfun tys) dicts
-paMethod :: (Builtins -> Var) -> Type -> VM CoreExpr
-paMethod method ty
+
+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
- dict <- paDictOfType ty
+ fn <- builtin method
+ Just dict <- paDictOfType ty
return $ mkApps (Var fn) [Type ty, dict]
-lengthPA :: CoreExpr -> VM CoreExpr
-lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty)
+prDictOfType :: Type -> VM CoreExpr
+prDictOfType ty = prDictOfTyApp ty_fn ty_args
where
- ty = splitPArrayTy (exprType x)
+ (ty_fn, ty_args) = splitAppTys ty
-replicatePA :: CoreExpr -> CoreExpr -> VM CoreExpr
-replicatePA len x = liftM (`mkApps` [len,x])
- (paMethod replicatePAVar (exprType x))
+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
-emptyPA :: Type -> VM CoreExpr
-emptyPA = paMethod emptyPAVar
+prDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
+prDFunApply dfun tys
+ = do
+ dicts <- mapM prDictOfType tys
+ return $ mkApps (mkTyApps dfun tys) dicts
-liftPA :: CoreExpr -> VM CoreExpr
-liftPA x
+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
- replicatePA (Var lc) x
+ 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 <- mkPArrayType vty
+ lty <- mkPDataType vty
vv <- newLocalVar fs vty
lv <- newLocalVar fs lty
return (vv,lv)
-polyAbstract :: [TyVar] -> ((CoreExpr -> CoreExpr) -> VM a) -> VM a
+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_lams mdicts)
+ 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)
+ Just ty -> liftM Just (newLocalVar (fsLit "dPA") ty)
Nothing -> return Nothing
- mk_lams mdicts = mkLams (tvs ++ [dict | Just dict <- mdicts])
+ 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
- dicts <- mapM paDictOfType tys
+ = do Just dicts <- liftM sequence $ 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)
+ = do Just dicts <- liftM sequence $ mapM paDictOfType tys
+ return $ mapVect (\e -> e `mkTyApps` tys `mkApps` dicts) expr
-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
-
-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 :: VExpr -> VExpr -> VM VExpr
-mkClosureApp (vclo, lclo) (varg, larg)
+{-
+boxExpr :: Type -> VExpr -> VM VExpr
+boxExpr ty (vexpr, lexpr)
+ | Just (tycon, []) <- splitTyConApp_maybe ty
+ , isUnLiftedTyCon tycon
= 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 <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 idType vs
-
-mkVectEnv :: [Type] -> [Var] -> (Type, CoreExpr, CoreExpr -> CoreExpr -> CoreExpr)
-mkVectEnv [] [] = (unitTy, Var unitDataConId, \env 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 -> Case env (mkWildId 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 (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
- let [env_con] = tyConDataCons env_tc
-
- env = Var (dataConWrapId env_con)
- `mkTyApps` env_tyargs
- `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, lc : bndrs, body)]
- return (env, bind)
- where
- vty = mkCoreTupTy tys
+ r <- lookupBoxedTyCon tycon
+ case r of
+ Just tycon' -> let [dc] = tyConDataCons tycon'
+ in
+ return (mkConApp dc [vexpr], lexpr)
+ Nothing -> return (vexpr, lexpr)
+-}
- bndrs | null vs = [mkWildId unitTy]
- | otherwise = vs