collectAnnValBinders,
mkDataConTag,
splitClosureTy,
- mkPRepr, mkToPRepr, mkToArrPRepr, mkFromPRepr, mkFromArrPRepr,
+
+ TyConRepr(..), mkTyConRepr,
+ mkToArrPRepr, mkFromPRepr, mkFromArrPRepr,
mkPADictType, mkPArrayType, mkPReprType,
+
parrayCoerce, parrayReprTyCon, parrayReprDataCon, mkVScrut,
prDictOfType, prCoerce,
paDictArgType, paDictOfType, paDFunType,
import Type
import TypeRep
import TyCon
-import DataCon ( DataCon, dataConWrapId, dataConTag )
+import DataCon
import Var
import Id ( mkWildId )
import MkId ( unwrapFamInstScrut )
| otherwise = pprPanic "splitFixedTyConApp" (ppr tc <+> ppr ty)
-splitEmbedTy :: Type -> Type
-splitEmbedTy = splitUnTy "splitEmbedTy" embedTyConName
-
splitClosureTy :: Type -> (Type, Type)
splitClosureTy = splitBinTy "splitClosureTy" closureTyConName
where
mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
-mkPRepr :: [[Type]] -> VM Type
-mkPRepr tys
- = do
- embed_tc <- builtin embedTyCon
- sum_tcs <- builtins sumTyCon
- prod_tcs <- builtins prodTyCon
+data TyConRepr = TyConRepr {
+ repr_tyvars :: [TyVar]
+ , repr_tys :: [[Type]]
- let mk_sum [] = unitTy
- mk_sum [ty] = ty
- mk_sum tys = mkTyConApp (sum_tcs $ length tys) tys
+ , repr_prod_tycons :: [Maybe TyCon]
+ , repr_prod_tys :: [Type]
+ , repr_sum_tycon :: Maybe TyCon
+ , repr_type :: Type
+ }
- mk_prod [] = unitTy
- mk_prod [ty] = ty
- mk_prod tys = mkTyConApp (prod_tcs $ length tys) tys
-
- mk_embed ty = mkTyConApp embed_tc [ty]
-
- return . mk_sum
- . map (mk_prod . map mk_embed)
- $ tys
-
-mkToPRepr :: [[CoreExpr]] -> VM ([CoreExpr], Type)
-mkToPRepr ess
+mkTyConRepr :: TyCon -> VM TyConRepr
+mkTyConRepr vect_tc
= do
- embed_tc <- builtin embedTyCon
- embed_dc <- builtin embedDataCon
- sum_tcs <- builtins sumTyCon
- prod_tcs <- builtins prodTyCon
+ 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
- let mk_sum [] = ([Var unitDataConId], unitTy)
- mk_sum [(expr, ty)] = ([expr], ty)
- mk_sum es = (zipWith mk_alt (tyConDataCons sum_tc) exprs,
- mkTyConApp sum_tc tys)
- where
- (exprs, tys) = unzip es
- sum_tc = sum_tcs (length es)
- mk_alt dc expr = mkConApp dc (map Type tys ++ [expr])
+ return $ TyConRepr {
+ repr_tyvars = tyvars
+ , repr_tys = rep_tys
- mk_prod [] = (Var unitDataConId, unitTy)
- mk_prod [(expr, ty)] = (expr, ty)
- mk_prod es = (mkConApp prod_dc (map Type tys ++ exprs),
- mkTyConApp prod_tc tys)
- where
- (exprs, tys) = unzip es
- prod_tc = prod_tcs (length es)
- [prod_dc] = tyConDataCons prod_tc
+ , repr_prod_tycons = prod_tycons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = sum_tycon
+ , 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_embed expr = (mkConApp embed_dc [Type ty, expr],
- mkTyConApp embed_tc [ty])
- where ty = exprType expr
+ mk_tycon get_tc tys
+ | n > 1 = builtin (Just . get_tc n)
+ | otherwise = return Nothing
+ where n = length tys
- return . mk_sum $ map (mk_prod . map mk_embed) ess
+ 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
- embed_tc <- builtin embedTyCon
- (embed_rtc, _) <- parrayReprTyCon (mkTyConApp embed_tc [unitTy])
- let [embed_rdc] = tyConDataCons embed_rtc
-
let mk_sum [(expr, ty)] = return (expr, ty)
mk_sum es
= do
where
(exprs, tys) = unzip es
- mk_prod [(expr, ty)] = return (expr, ty)
- mk_prod es
+ mk_prod [expr] = return (expr, splitPArrayTy (exprType expr))
+ mk_prod exprs
= do
- prod_tc <- builtin . prodTyCon $ length es
+ 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
- (exprs, tys) = unzip es
-
- mk_embed expr = (mkConApp embed_rdc [Type ty, expr],
- mkTyConApp embed_tc [ty])
- where ty = splitPArrayTy (exprType expr)
+ tys = map (splitPArrayTy . exprType) exprs
- liftM fst (mk_sum =<< mapM (mk_prod . map mk_embed) ess)
+ liftM fst (mk_sum =<< mapM mk_prod ess)
mkFromPRepr :: CoreExpr -> Type -> [([Var], CoreExpr)] -> VM CoreExpr
mkFromPRepr scrut res_ty alts
= do
- embed_dc <- builtin embedDataCon
sum_tcs <- builtins sumTyCon
prod_tcs <- builtins prodTyCon
mk_alt dc p body = (DataAlt dc, [p], body)
un_prod expr ty [] r = return r
- un_prod expr ty [var] r = return $ un_embed expr ty var r
+ un_prod expr ty [var] r = return $ Let (NonRec var expr) r
un_prod expr ty vars r
- = do
- xs <- mapM (newLocalVar FSLIT("x")) tys
- let body = foldr (\(e,t,v) r -> un_embed e t v r) r
- $ zip3 (map Var xs) tys vars
- return $ Case expr (mkWildId ty) res_ty
- [(DataAlt prod_dc, xs, body)]
+ = return $ Case expr (mkWildId ty) res_ty
+ [(DataAlt prod_dc, vars, r)]
where
- tys = splitFixedTyConApp prod_tc ty
prod_tc = prod_tcs $ length vars
[prod_dc] = tyConDataCons prod_tc
- un_embed expr ty var r
- = Case expr (mkWildId ty) res_ty
- [(DataAlt embed_dc, [var], r)]
-
un_sum scrut (exprType scrut) alts
mkFromArrPRepr :: CoreExpr -> Type -> Var -> Var -> [[Var]] -> CoreExpr
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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