+{-# 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 VectType ( vectTyCon, vectType, vectTypeEnv,
PAInstance, buildPADict )
where
import Id ( mkWildId )
import Name ( Name, getOccName )
import NameEnv
-import TysWiredIn ( unitTy, unitTyCon, intTy, intDataCon, unitDataConId )
+import TysWiredIn
import TysPrim ( intPrimTy )
import Unique
import UniqFM
import UniqSet
+import Util ( singleton )
import Digraph ( SCC(..), stronglyConnComp )
import Outputable
, sum_arr_data_con :: DataCon
}
-mkProduct :: [Type] -> VM Repr
-mkProduct tys
+ | IdRepr Type
+
+ | VoidRepr {
+ void_tycon :: TyCon
+ , void_bottom :: CoreExpr
+ }
+
+ | EnumRepr {
+ enum_tycon :: TyCon
+ , enum_data_con :: DataCon
+ , enum_arr_tycon :: TyCon
+ , enum_arr_data_con :: DataCon
+ }
+
+voidRepr :: VM Repr
+voidRepr
+ = do
+ tycon <- builtin voidTyCon
+ var <- builtin voidVar
+ return $ VoidRepr {
+ void_tycon = tycon
+ , void_bottom = Var var
+ }
+
+enumRepr :: VM Repr
+enumRepr
+ = do
+ (arr_tycon, _) <- parrayReprTyCon intTy
+ let [arr_data_con] = tyConDataCons arr_tycon
+
+ return $ EnumRepr {
+ enum_tycon = tycon
+ , enum_data_con = data_con
+ , enum_arr_tycon = arr_tycon
+ , enum_arr_data_con = arr_data_con
+ }
+ where
+ tycon = intTyCon
+ data_con = intDataCon
+
+unboxedProductRepr :: [Type] -> VM Repr
+unboxedProductRepr [] = voidRepr
+unboxedProductRepr [ty] = return $ IdRepr ty
+unboxedProductRepr tys = boxedProductRepr tys
+
+boxedProductRepr :: [Type] -> VM Repr
+boxedProductRepr tys
= do
tycon <- builtin (prodTyCon arity)
let [data_con] = tyConDataCons tycon
where
arity = length tys
-mkSum :: [Repr] -> VM Repr
-mkSum [repr] = return repr
-mkSum reprs
+sumRepr :: [Repr] -> VM Repr
+sumRepr [] = voidRepr
+sumRepr [repr] = boxRepr repr
+sumRepr reprs
= do
tycon <- builtin (sumTyCon arity)
(arr_tycon, _) <- parrayReprTyCon
where
arity = length reprs
+splitSumRepr :: Repr -> [Repr]
+splitSumRepr (SumRepr { sum_components = reprs }) = reprs
+splitSumRepr repr = [repr]
+
+boxRepr :: Repr -> VM Repr
+boxRepr (VoidRepr {}) = boxedProductRepr []
+boxRepr (IdRepr ty) = boxedProductRepr [ty]
+boxRepr repr = return repr
+
reprType :: Repr -> Type
reprType (ProdRepr { prod_tycon = tycon, prod_components = tys })
= mkTyConApp tycon tys
reprType (SumRepr { sum_tycon = tycon, sum_components = reprs })
= mkTyConApp tycon (map reprType reprs)
+reprType (IdRepr ty) = ty
+reprType (VoidRepr { void_tycon = tycon }) = mkTyConApp tycon []
+reprType (EnumRepr { enum_tycon = tycon }) = mkTyConApp tycon []
arrReprType :: Repr -> VM Type
arrReprType = mkPArrayType . reprType
= do
int_arr <- builtin parrayIntPrimTyCon
return [intPrimTy, mkTyConApp int_arr [], mkTyConApp int_arr []]
-arrShapeTys repr = return [intPrimTy]
+arrShapeTys (ProdRepr {}) = return [intPrimTy]
+arrShapeTys (IdRepr _) = return []
+arrShapeTys (VoidRepr {}) = return [intPrimTy]
+arrShapeTys (EnumRepr {}) = return [intPrimTy]
arrShapeVars :: Repr -> VM [Var]
arrShapeVars repr = mapM (newLocalVar FSLIT("sh")) =<< arrShapeTys repr
rep <- builtin replicatePAIntPrimVar
up <- builtin upToPAIntPrimVar
return [len, Var rep `mkApps` [len, tag], Var up `App` len]
-
-arrReprElemTys :: Repr -> [[Type]]
-arrReprElemTys (SumRepr { sum_components = prods })
- = map arrProdElemTys prods
-arrReprElemTys prod@(ProdRepr {})
- = [arrProdElemTys prod]
-
-arrProdElemTys (ProdRepr { prod_components = [] })
- = [unitTy]
-arrProdElemTys (ProdRepr { prod_components = tys })
- = tys
-
-arrReprTys :: Repr -> VM [[Type]]
-arrReprTys = mapM (mapM mkPArrayType) . arrReprElemTys
+replicateShape (IdRepr _) _ _ = return []
+replicateShape (VoidRepr {}) len _ = return [len]
+replicateShape (EnumRepr {}) len _ = return [len]
+
+emptyArrRepr :: Repr -> VM [CoreExpr]
+emptyArrRepr (SumRepr { sum_components = prods })
+ = liftM concat $ mapM emptyArrRepr prods
+emptyArrRepr (ProdRepr { prod_components = [] })
+ = return [Var unitDataConId]
+emptyArrRepr (ProdRepr { prod_components = tys })
+ = mapM emptyPA tys
+emptyArrRepr (IdRepr ty)
+ = liftM singleton $ emptyPA ty
+emptyArrRepr (VoidRepr { void_tycon = tycon })
+ = liftM singleton $ emptyPA (mkTyConApp tycon [])
+emptyArrRepr (EnumRepr { enum_tycon = tycon })
+ = liftM singleton $ emptyPA (mkTyConApp tycon [])
+
+arrReprTys :: Repr -> VM [Type]
+arrReprTys (SumRepr { sum_components = reprs })
+ = liftM concat $ mapM arrReprTys reprs
+arrReprTys (ProdRepr { prod_components = [] })
+ = return [unitTy]
+arrReprTys (ProdRepr { prod_components = tys })
+ = mapM mkPArrayType tys
+arrReprTys (IdRepr ty)
+ = liftM singleton $ mkPArrayType ty
+arrReprTys (VoidRepr { void_tycon = tycon })
+ = liftM singleton $ mkPArrayType (mkTyConApp tycon [])
+arrReprTys (EnumRepr {})
+ = liftM singleton $ mkPArrayType intPrimTy
+
+arrReprTys' :: Repr -> VM [[Type]]
+arrReprTys' (SumRepr { sum_components = reprs })
+ = mapM arrReprTys reprs
+arrReprTys' repr = liftM singleton $ arrReprTys repr
arrReprVars :: Repr -> VM [[Var]]
arrReprVars repr
- = mapM (mapM (newLocalVar FSLIT("rs"))) =<< arrReprTys repr
+ = mapM (mapM (newLocalVar FSLIT("rs"))) =<< arrReprTys' repr
mkRepr :: TyCon -> VM Repr
mkRepr vect_tc
- = mkSum
- =<< mapM mkProduct (map dataConRepArgTys $ tyConDataCons vect_tc)
+ | [tys] <- rep_tys = boxedProductRepr tys
+ | all null rep_tys = enumRepr
+ | otherwise = sumRepr =<< mapM unboxedProductRepr rep_tys
+ where
+ rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
buildPReprType :: TyCon -> VM Type
buildPReprType = liftM reprType . mkRepr
, sum_tycon = tycon })
expr
= do
- (vars, bodies) <- mapAndUnzipM prod_alt prods
+ (vars, bodies) <- mapAndUnzipM to_unboxed prods
return . Case expr (mkWildId (exprType expr)) res_ty
$ zipWith4 mk_alt cons vars (tyConDataCons tycon) bodies
where
ty_args = map (Type . reprType) prods
+ to_repr (EnumRepr { enum_data_con = data_con }) expr
+ = return . Case expr (mkWildId (exprType expr)) res_ty
+ $ map mk_alt cons
+ where
+ mk_alt con = (DataAlt con, [], mkConApp data_con [mkDataConTag con])
+
to_repr prod expr
= do
- (vars, body) <- prod_alt prod
+ (vars, body) <- to_unboxed prod
return $ Case expr (mkWildId (exprType expr)) res_ty
[(DataAlt con, vars, body)]
- prod_alt (ProdRepr { prod_components = tys
- , prod_data_con = data_con })
+ to_unboxed (ProdRepr { prod_components = tys
+ , prod_data_con = data_con })
= do
vars <- mapM (newLocalVar FSLIT("r")) tys
return (vars, mkConApp data_con (map Type tys ++ map Var vars))
+ to_unboxed (IdRepr ty)
+ = do
+ var <- newLocalVar FSLIT("y") ty
+ return ([var], Var var)
+
+ to_unboxed (VoidRepr { void_bottom = bottom })
+ = return ([], bottom)
+
+
buildFromPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
buildFromPRepr repr vect_tc prepr_tc _
= do
expr
= do
vars <- mapM (newLocalVar FSLIT("x")) (map reprType prods)
- bodies <- sequence . zipWith3 from_prod prods cons
+ bodies <- sequence . zipWith3 from_unboxed prods cons
$ map Var vars
return . Case expr (mkWildId (reprType repr)) res_ty
$ zipWith3 sum_alt (tyConDataCons tycon) vars bodies
where
sum_alt data_con var body = (DataAlt data_con, [var], body)
- from_repr repr expr = from_prod repr con expr
+ from_repr repr@(EnumRepr { enum_data_con = data_con }) expr
+ = do
+ var <- newLocalVar FSLIT("n") intPrimTy
- from_prod prod@(ProdRepr { prod_components = tys
- , prod_data_con = data_con })
+ let res = Case (Var var) (mkWildId intPrimTy) res_ty
+ $ (DEFAULT, [], error_expr)
+ : zipWith mk_alt (tyConDataCons vect_tc) cons
+
+ return $ Case expr (mkWildId (reprType repr)) res_ty
+ [(DataAlt data_con, [var], res)]
+ where
+ mk_alt data_con con = (LitAlt (mkDataConTagLit data_con), [], con)
+
+ error_expr = mkRuntimeErrorApp rUNTIME_ERROR_ID res_ty
+ . showSDoc
+ $ sep [text "Invalid NDP representation of", ppr vect_tc]
+
+ from_repr repr expr = from_unboxed repr con expr
+
+ from_unboxed prod@(ProdRepr { prod_components = tys
+ , prod_data_con = data_con })
con
expr
= do
return $ Case expr (mkWildId (reprType prod)) res_ty
[(DataAlt data_con, vars, con `mkVarApps` vars)]
+ from_unboxed (IdRepr _) con expr
+ = return $ con `App` expr
+
+ from_unboxed (VoidRepr {}) con expr
+ = return con
+
buildToArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
buildToArrPRepr repr vect_tc prepr_tc arr_tc
= do
, sum_arr_tycon = tycon
, sum_arr_data_con = data_con })
= do
- exprs <- zipWithM (to_prod len_var) repr_vars prods
+ exprs <- zipWithM to_prod repr_vars prods
return . wrapFamInstBody tycon tys
. mkConApp data_con
where
tys = map reprType prods
- to_repr [len_var] [repr_vars] prod = to_prod len_var repr_vars prod
-
- to_prod len_var
- repr_vars
+ to_repr [len_var]
+ [repr_vars]
(ProdRepr { prod_components = tys
, prod_arr_tycon = tycon
, prod_arr_data_con = data_con })
- = return . wrapFamInstBody tycon tys
- . mkConApp data_con
- $ map Type tys ++ map Var (len_var : repr_vars)
+ = return . wrapFamInstBody tycon tys
+ . mkConApp data_con
+ $ map Type tys ++ map Var (len_var : repr_vars)
+
+ to_repr [len_var]
+ [[repr_var]]
+ (EnumRepr { enum_arr_tycon = tycon
+ , enum_arr_data_con = data_con })
+ = return . wrapFamInstBody tycon []
+ $ mkConApp data_con [Var len_var, Var repr_var]
+
+ to_prod repr_vars@(r : _)
+ (ProdRepr { prod_components = tys@(ty : _)
+ , prod_arr_tycon = tycon
+ , prod_arr_data_con = data_con })
+ = do
+ len <- lengthPA ty (Var r)
+ return . wrapFamInstBody tycon tys
+ . mkConApp data_con
+ $ map Type tys ++ len : map Var repr_vars
+
+ to_prod [var] (IdRepr ty) = return (Var var)
+ to_prod [var] (VoidRepr {}) = return (Var var)
+
buildFromArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
buildFromArrPRepr repr vect_tc prepr_tc arr_tc
return $ Case scrut (mkWildId scrut_ty) res_ty
[(DataAlt data_con, shape_vars ++ repr_vars, body)]
+ from_prod (EnumRepr { enum_arr_tycon = tycon
+ , enum_arr_data_con = data_con })
+ expr
+ [len_var]
+ [repr_var]
+ res_ty
+ body
+ = let scrut = unwrapFamInstScrut tycon [] expr
+ scrut_ty = mkTyConApp tycon []
+ in
+ return $ Case scrut (mkWildId scrut_ty) res_ty
+ [(DataAlt data_con, [len_var, repr_var], body)]
+
+ from_prod (IdRepr ty)
+ expr
+ shape_vars
+ [repr_var]
+ res_ty
+ body
+ = return $ Let (NonRec repr_var expr) body
+
+ from_prod (VoidRepr {})
+ expr
+ shape_vars
+ [repr_var]
+ res_ty
+ body
+ = return $ Let (NonRec repr_var expr) body
+
buildPRDictRepr :: Repr -> VM CoreExpr
+buildPRDictRepr (VoidRepr { void_tycon = tycon })
+ = prDFunOfTyCon tycon
+buildPRDictRepr (IdRepr ty) = mkPR ty
buildPRDictRepr (ProdRepr {
prod_components = tys
, prod_tycon = tycon
dfun <- prDFunOfTyCon tycon
return $ dfun `mkTyApps` map reprType prods `mkApps` prs
+buildPRDictRepr (EnumRepr { enum_tycon = tycon })
+ = prDFunOfTyCon tycon
+
buildPRDict :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
buildPRDict repr vect_tc prepr_tc _
= do
shape_tys <- arrShapeTys repr
repr_tys <- arrReprTys repr
- let tys = shape_tys ++ concat repr_tys
+ let tys = shape_tys ++ repr_tys
liftDs $ buildDataCon dc_name
False -- not infix
. zipWith3 def_worker (tyConDataCons orig_tc) rep_tys
$ zipWith4 mk_data_con (tyConDataCons vect_tc)
rep_tys
- (inits arr_tys)
- (tail $ tails arr_tys)
+ (inits reprs)
+ (tail $ tails reprs)
mapM_ (uncurry hoistBinding) bs
where
tyvars = tyConTyVars vect_tc
res_ty = mkTyConApp vect_tc var_tys
rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
- arr_tys = arrReprElemTys repr
+ reprs = splitSumRepr repr
[arr_dc] = tyConDataCons arr_tc
mk_data_con con tys pre post
= liftM2 (,) (vect_data_con con)
- (lift_data_con tys (concat pre)
- (concat post)
- (mkDataConTag con))
+ (lift_data_con tys pre post (mkDataConTag con))
vect_data_con con = return $ mkConApp con ty_args
- lift_data_con tys pre_tys post_tys tag
+ lift_data_con tys pre_reprs post_reprs tag
= do
len <- builtin liftingContext
args <- mapM (newLocalVar FSLIT("xs"))
shape <- replicateShape repr (Var len) tag
repr <- mk_arr_repr (Var len) (map Var args)
- pre <- mapM emptyPA pre_tys
- post <- mapM emptyPA post_tys
+ pre <- liftM concat $ mapM emptyArrRepr pre_reprs
+ post <- liftM concat $ mapM emptyArrRepr post_reprs
return . mkLams (len : args)
. wrapFamInstBody arr_tc var_tys
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