+{-# 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 VectUtils (
collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg,
collectAnnValBinders,
- mkDataConTag,
- splitClosureTy,
+ mkDataConTag, mkDataConTagLit,
- TyConRepr(..), mkTyConRepr,
- mkToArrPRepr, mkFromArrPRepr,
+ mkBuiltinCo,
mkPADictType, mkPArrayType, mkPReprType,
- parrayCoerce, parrayReprTyCon, parrayReprDataCon, mkVScrut,
- prDFunOfTyCon, prCoerce,
+ parrayReprTyCon, parrayReprDataCon, mkVScrut,
+ prDFunOfTyCon,
paDictArgType, paDictOfType, paDFunType,
paMethod, mkPR, lengthPA, replicatePA, emptyPA, liftPA,
polyAbstract, polyApply, polyVApply,
import TysWiredIn
import TysPrim ( intPrimTy )
import BasicTypes ( Boxity(..) )
+import Literal ( Literal, mkMachInt )
import Outputable
import FastString
-import Maybes ( orElse )
import Data.List ( zipWith4 )
import Control.Monad ( liftM, liftM2, zipWithM_ )
isAnnTypeArg (_, AnnType t) = True
isAnnTypeArg _ = False
-mkDataConTag :: DataCon -> CoreExpr
-mkDataConTag dc = mkConApp intDataCon [mkIntLitInt $ dataConTag dc]
-
-splitUnTy :: String -> Name -> Type -> Type
-splitUnTy s name ty
- | Just (tc, [ty']) <- splitTyConApp_maybe ty
- , tyConName tc == name
- = ty'
-
- | otherwise = pprPanic s (ppr ty)
-
-splitBinTy :: String -> Name -> Type -> (Type, Type)
-splitBinTy s name ty
- | Just (tc, [ty1, ty2]) <- splitTyConApp_maybe ty
- , tyConName tc == name
- = (ty1, ty2)
+mkDataConTagLit :: DataCon -> Literal
+mkDataConTagLit con
+ = mkMachInt . toInteger $ dataConTag con - fIRST_TAG
- | otherwise = pprPanic s (ppr ty)
-
-splitFixedTyConApp :: TyCon -> Type -> [Type]
-splitFixedTyConApp tc ty
- | Just (tc', tys) <- splitTyConApp_maybe ty
- , tc == tc'
- = tys
-
- | otherwise = pprPanic "splitFixedTyConApp" (ppr tc <+> ppr ty)
+mkDataConTag :: DataCon -> CoreExpr
+mkDataConTag con = mkIntLitInt (dataConTag con - fIRST_TAG)
-splitClosureTy :: Type -> (Type, Type)
-splitClosureTy = splitBinTy "splitClosureTy" closureTyConName
+splitPrimTyCon :: Type -> Maybe TyCon
+splitPrimTyCon ty
+ | Just (tycon, []) <- splitTyConApp_maybe ty
+ , isPrimTyCon tycon
+ = Just tycon
-splitPArrayTy :: Type -> Type
-splitPArrayTy = splitUnTy "splitPArrayTy" parrayTyConName
+ | otherwise = Nothing
mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type
mkBuiltinTyConApp get_tc tys
where
mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
-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
- 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
-
- is_product | [_] <- data_cons = True
- | otherwise = False
-
- mk_shape uarr = intPrimTy : mk_sel uarr
-
- mk_sel uarr | is_product = []
- | otherwise = [uarr_int, uarr_int]
- where
- uarr_int = mkTyConApp uarr [intTy]
-
- mk_tycon get_tc tys
- | n > 1 = builtin (Just . get_tc n)
- | otherwise = return Nothing
- where n = length tys
-
- mk_single_datacon tc | [dc] <- tyConDataCons tc = dc
-
- mk_tc_app_maybe Nothing [] = unitTy
- mk_tc_app_maybe Nothing [ty] = ty
- mk_tc_app_maybe (Just tc) tys = mkTyConApp tc tys
-
- arr_repr_elem_tys [] = [unitTy]
- arr_repr_elem_tys tys = tys
-
-mkToArrPRepr :: CoreExpr -> CoreExpr -> [[CoreExpr]] -> VM CoreExpr
-mkToArrPRepr len sel ess
- = do
- let mk_sum [(expr, ty)] = return (expr, ty)
- mk_sum es
- = do
- sum_tc <- builtin . sumTyCon $ length es
- (sum_rtc, _) <- parrayReprTyCon (mkTyConApp sum_tc tys)
- let [sum_rdc] = tyConDataCons sum_rtc
-
- return (mkConApp sum_rdc (map Type tys ++ (len : sel : exprs)),
- mkTyConApp sum_tc tys)
- where
- (exprs, tys) = unzip es
-
- mk_prod [expr] = return (expr, splitPArrayTy (exprType expr))
- mk_prod exprs
- = do
- 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
- tys = map (splitPArrayTy . exprType) exprs
-
- liftM fst (mk_sum =<< mapM mk_prod ess)
-
-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]
mkPADictType ty = mkBuiltinTyConApp paTyCon [ty]
mkPArrayType :: Type -> VM Type
+mkPArrayType ty
+ | Just tycon <- splitPrimTyCon ty
+ = do
+ arr <- traceMaybeV "mkPArrayType" (ppr tycon)
+ $ lookupPrimPArray tycon
+ return $ mkTyConApp arr []
mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty]
-parrayCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr
-parrayCoerce repr_tc args expr
- | Just arg_co <- tyConFamilyCoercion_maybe repr_tc
+mkBuiltinCo :: (Builtins -> TyCon) -> VM Coercion
+mkBuiltinCo get_tc
= do
- parray <- builtin parrayTyCon
-
- let co = mkAppCoercion (mkTyConApp parray [])
- (mkSymCoercion (mkTyConApp arg_co args))
-
- return $ mkCoerce co expr
+ tc <- builtin get_tc
+ return $ mkTyConApp tc []
parrayReprTyCon :: Type -> VM (TyCon, [Type])
parrayReprTyCon ty = builtin parrayTyCon >>= (`lookupFamInst` [ty])
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
dicts <- mapM paDictOfType tys
return $ mkApps (mkTyApps dfun tys) dicts
-paMethod :: (Builtins -> Var) -> Type -> VM CoreExpr
-paMethod method ty
+type PAMethod = (Builtins -> Var, String)
+
+pa_length = (lengthPAVar, "lengthPA")
+pa_replicate = (replicatePAVar, "replicatePA")
+pa_empty = (emptyPAVar, "emptyPA")
+
+paMethod :: PAMethod -> Type -> VM CoreExpr
+paMethod (method, name) ty
+ | Just tycon <- splitPrimTyCon ty
+ = do
+ fn <- traceMaybeV "paMethod" (ppr tycon <+> text name)
+ $ lookupPrimMethod tycon name
+ return (Var fn)
+
+paMethod (method, name) ty
= do
fn <- builtin method
dict <- paDictOfType ty
return $ mkApps (Var fn) [Type ty, dict]
mkPR :: Type -> VM CoreExpr
-mkPR = paMethod mkPRVar
+mkPR ty
+ = do
+ fn <- builtin mkPRVar
+ dict <- paDictOfType ty
+ return $ mkApps (Var fn) [Type ty, dict]
-lengthPA :: CoreExpr -> VM CoreExpr
-lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty)
- where
- ty = splitPArrayTy (exprType x)
+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 replicatePAVar (exprType x))
+ (paMethod pa_replicate (exprType x))
emptyPA :: Type -> VM CoreExpr
-emptyPA = paMethod emptyPAVar
+emptyPA = paMethod pa_empty
liftPA :: CoreExpr -> VM CoreExpr
liftPA x
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)
+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])
- where
- (arg_ty, res_ty) = splitClosureTy (exprType vclo)
buildClosures :: [TyVar] -> [VVar] -> [Type] -> Type -> VM VExpr -> VM VExpr
buildClosures tvs vars [] res_ty mk_body
mkLiftEnv lc [ty] [v]
= return (Var v, \env body ->
do
- len <- lengthPA (Var v)
+ len <- lengthPA ty (Var v)
return . Let (NonRec v env)
$ Case len lc (exprType body) [(DEFAULT, [], body)])
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