collectAnnValBinders,
mkDataConTag,
splitClosureTy,
- mkPRepr, mkToPRepr, mkFromPRepr,
+
+ TyConRepr(..), mkTyConRepr,
+ mkToArrPRepr, mkFromArrPRepr,
mkPADictType, mkPArrayType, mkPReprType,
- parrayReprTyCon, parrayReprDataCon, mkVScrut,
+
+ parrayCoerce, parrayReprTyCon, parrayReprDataCon, mkVScrut,
+ prDFunOfTyCon, prCoerce,
paDictArgType, paDictOfType, paDFunType,
- paMethod, lengthPA, replicatePA, emptyPA, liftPA,
+ paMethod, mkPR, lengthPA, replicatePA, emptyPA, liftPA,
polyAbstract, polyApply, polyVApply,
hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted,
buildClosure, buildClosures,
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 Name ( Name )
import PrelNames
import TysWiredIn
+import TysPrim ( intPrimTy )
import BasicTypes ( Boxity(..) )
import Outputable
import FastString
+import Maybes ( orElse )
+import Data.List ( zipWith4 )
import Control.Monad ( liftM, liftM2, zipWithM_ )
collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type])
| otherwise = pprPanic s (ppr ty)
-splitCrossTy :: Type -> (Type, Type)
-splitCrossTy = splitBinTy "splitCrossTy" ndpCrossTyConName
-
-splitPlusTy :: Type -> (Type, Type)
-splitPlusTy = splitBinTy "splitSumTy" ndpPlusTyConName
+splitFixedTyConApp :: TyCon -> Type -> [Type]
+splitFixedTyConApp tc ty
+ | Just (tc', tys) <- splitTyConApp_maybe ty
+ , tc == tc'
+ = tys
-splitEmbedTy :: Type -> Type
-splitEmbedTy = splitUnTy "splitEmbedTy" embedTyConName
+ | otherwise = pprPanic "splitFixedTyConApp" (ppr tc <+> ppr ty)
splitClosureTy :: Type -> (Type, Type)
splitClosureTy = splitBinTy "splitClosureTy" closureTyConName
where
mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
-mkPRepr :: [[Type]] -> VM Type
-mkPRepr [] = return unitTy
-mkPRepr tys
+data TyConRepr = TyConRepr {
+ repr_tyvars :: [TyVar]
+ , repr_tys :: [[Type]]
+ , arr_shape_tys :: [Type]
+ , arr_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
- embed <- builtin embedTyCon
- cross <- builtin crossTyCon
- plus <- builtin plusTyCon
-
- let mk_embed ty = mkTyConApp embed [ty]
- mk_cross ty1 ty2 = mkTyConApp cross [ty1, ty2]
- mk_plus ty1 ty2 = mkTyConApp plus [ty1, ty2]
+ uarr <- builtin uarrTyCon
+ 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
+ arr_repr_tys <- mapM (mapM mkPArrayType . arr_repr_elem_tys) rep_tys
+
+ return $ TyConRepr {
+ repr_tyvars = tyvars
+ , repr_tys = rep_tys
+ , arr_shape_tys = mk_shape uarr
+ , arr_repr_tys = arr_repr_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_tup [] = unitTy
- mk_tup tys = foldr1 mk_cross tys
+ is_product | [_] <- data_cons = True
+ | otherwise = False
- mk_sum [] = unitTy
- mk_sum tys = foldr1 mk_plus tys
+ mk_shape uarr = intPrimTy : mk_sel uarr
- return . mk_sum
- . map (mk_tup . map mk_embed)
- $ tys
+ mk_sel uarr | is_product = []
+ | otherwise = [uarr_int, uarr_int]
+ where
+ uarr_int = mkTyConApp uarr [intTy]
-mkToPRepr :: [[CoreExpr]] -> VM ([CoreExpr], Type)
-mkToPRepr ess
- = do
- embed_tc <- builtin embedTyCon
- embed_dc <- builtin embedDataCon
- cross_tc <- builtin crossTyCon
- cross_dc <- builtin crossDataCon
- plus_tc <- builtin plusTyCon
- left_dc <- builtin leftDataCon
- right_dc <- builtin rightDataCon
-
- let mk_embed (expr, ty, pa)
- = (mkConApp embed_dc [Type ty, pa, expr],
- mkTyConApp embed_tc [ty])
-
- mk_cross (expr1, ty1) (expr2, ty2)
- = (mkConApp cross_dc [Type ty1, Type ty2, expr1, expr2],
- mkTyConApp cross_tc [ty1, ty2])
-
- mk_tup [] = (Var unitDataConId, unitTy)
- mk_tup es = foldr1 mk_cross es
-
- mk_sum [] = ([Var unitDataConId], unitTy)
- mk_sum [(expr, ty)] = ([expr], ty)
- mk_sum ((expr, lty) : es)
- = let (alts, rty) = mk_sum es
- in
- (mkConApp left_dc [Type lty, Type rty, expr]
- : [mkConApp right_dc [Type lty, Type rty, alt] | alt <- alts],
- mkTyConApp plus_tc [lty, rty])
-
- liftM (mk_sum . map (mk_tup . map mk_embed))
- (mapM (mapM init) ess)
- where
- init expr = let ty = exprType expr
- in do
- pa <- paDictOfType ty
- return (expr, ty, pa)
+ mk_tycon get_tc tys
+ | n > 1 = builtin (Just . get_tc n)
+ | otherwise = return Nothing
+ where n = length tys
-mkFromPRepr :: CoreExpr -> Type -> [([Var], CoreExpr)] -> VM CoreExpr
-mkFromPRepr scrut res_ty alts
- = do
- embed_dc <- builtin embedDataCon
- cross_dc <- builtin crossDataCon
- left_dc <- builtin leftDataCon
- right_dc <- builtin rightDataCon
- pa_tc <- builtin paTyCon
+ mk_single_datacon tc | [dc] <- tyConDataCons tc = dc
- let un_embed expr ty var res
- = do
- pa <- newLocalVar FSLIT("pa") (mkTyConApp pa_tc [idType var])
- return $ Case expr (mkWildId ty) res_ty
- [(DataAlt embed_dc, [pa, var], res)]
+ mk_tc_app_maybe Nothing [] = unitTy
+ mk_tc_app_maybe Nothing [ty] = ty
+ mk_tc_app_maybe (Just tc) tys = mkTyConApp tc tys
- un_cross expr ty var1 var2 res
- = Case expr (mkWildId ty) res_ty
- [(DataAlt cross_dc, [var1, var2], res)]
+ arr_repr_elem_tys [] = [unitTy]
+ arr_repr_elem_tys tys = tys
- un_tup expr ty [] res = return res
- un_tup expr ty [var] res = un_embed expr ty var res
- un_tup expr ty (var : vars) res
+mkToArrPRepr :: CoreExpr -> CoreExpr -> [[CoreExpr]] -> VM CoreExpr
+mkToArrPRepr len sel ess
+ = do
+ let mk_sum [(expr, ty)] = return (expr, ty)
+ mk_sum es
= do
- lv <- newLocalVar FSLIT("x") lty
- rv <- newLocalVar FSLIT("y") rty
- liftM (un_cross expr ty lv rv)
- (un_embed (Var lv) lty var
- =<< un_tup (Var rv) rty vars res)
- where
- (lty, rty) = splitCrossTy ty
+ sum_tc <- builtin . sumTyCon $ length es
+ (sum_rtc, _) <- parrayReprTyCon (mkTyConApp sum_tc tys)
+ let [sum_rdc] = tyConDataCons sum_rtc
- un_plus expr ty var1 var2 res1 res2
- = Case expr (mkWildId ty) res_ty
- [(DataAlt left_dc, [var1], res1),
- (DataAlt right_dc, [var2], res2)]
+ return (mkConApp sum_rdc (map Type tys ++ (len : sel : exprs)),
+ mkTyConApp sum_tc tys)
+ where
+ (exprs, tys) = unzip es
- un_sum expr ty [(vars, res)] = un_tup expr ty vars res
- un_sum expr ty ((vars, res) : alts)
+ mk_prod [expr] = return (expr, splitPArrayTy (exprType expr))
+ mk_prod exprs
= do
- lv <- newLocalVar FSLIT("l") lty
- rv <- newLocalVar FSLIT("r") rty
- liftM2 (un_plus expr ty lv rv)
- (un_tup (Var lv) lty vars res)
- (un_sum (Var rv) rty alts)
+ 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
- (lty, rty) = splitPlusTy ty
+ tys = map (splitPArrayTy . exprType) exprs
+
+ liftM fst (mk_sum =<< mapM mk_prod ess)
- un_sum scrut (exprType scrut) alts
+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]
mkPArrayType :: Type -> VM Type
mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty]
+parrayCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr
+parrayCoerce repr_tc args expr
+ | Just arg_co <- tyConFamilyCoercion_maybe repr_tc
+ = do
+ 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])
(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)
where
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
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