-module VectType ( vectTyCon, vectType, vectTypeEnv,
- PAInstance, buildPADict )
+{-# OPTIONS -fno-warn-missing-signatures #-}
+
+module VectType (
+ vectTyCon,
+ vectAndLiftType,
+ vectType,
+ vectTypeEnv,
+ buildPADict,
+ fromVect
+)
where
-
-#include "HsVersions.h"
-
-import VectMonad
import VectUtils
-import VectCore
+import Vectorise.Env
+import Vectorise.Convert
+import Vectorise.Vect
+import Vectorise.Monad
+import Vectorise.Builtins
+import Vectorise.Type.Type
+import Vectorise.Type.TyConDecl
+import Vectorise.Type.Classify
+import Vectorise.Type.Repr
+import Vectorise.Type.PADict
+import Vectorise.Utils.Closure
+import Vectorise.Utils.Hoisting
import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
+import BasicTypes
import CoreSyn
import CoreUtils
+import CoreUnfold
import BuildTyCl
import DataCon
import TyCon
import Type
-import TypeRep
import Coercion
import FamInstEnv ( FamInst, mkLocalFamInst )
-import InstEnv ( Instance, mkLocalInstance, instanceDFunId )
import OccName
+import Id
import MkId
-import BasicTypes ( StrictnessMark(..), OverlapFlag(..), boolToRecFlag )
-import Var ( Var )
-import Id ( mkWildId )
+import Var
import Name ( Name, getOccName )
import NameEnv
-import TysWiredIn ( unitTy, unitTyCon, intTy, intDataCon, unitDataConId )
-import TysPrim ( intPrimTy )
import Unique
import UniqFM
-import UniqSet
-import Digraph ( SCC(..), stronglyConnComp )
+import Util
import Outputable
+import FastString
-import Control.Monad ( liftM, liftM2, zipWithM, zipWithM_ )
-import Data.List ( inits, tails, zipWith4, zipWith5 )
-
--- ----------------------------------------------------------------------------
--- Types
-
-vectTyCon :: TyCon -> VM TyCon
-vectTyCon tc
- | isFunTyCon tc = builtin closureTyCon
- | isBoxedTupleTyCon tc = return tc
- | isUnLiftedTyCon tc = return tc
- | otherwise = do
- r <- lookupTyCon tc
- case r of
- Just tc' -> return tc'
-
- -- FIXME: just for now
- Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
-
-vectType :: Type -> VM Type
-vectType ty | Just ty' <- coreView ty = vectType ty'
-vectType (TyVarTy tv) = return $ TyVarTy tv
-vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
-vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
-vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
- (mapM vectType [ty1,ty2])
-vectType ty@(ForAllTy _ _)
- = do
- mdicts <- mapM paDictArgType tyvars
- mono_ty' <- vectType mono_ty
- return $ tyvars `mkForAllTys` ([dict | Just dict <- mdicts] `mkFunTys` mono_ty')
- where
- (tyvars, mono_ty) = splitForAllTys ty
-
-vectType ty = pprPanic "vectType:" (ppr ty)
+import MonadUtils
+import Control.Monad
+import Data.List
--- ----------------------------------------------------------------------------
--- Type definitions
+debug = False
+dtrace s x = if debug then pprTrace "VectType" s x else x
-type TyConGroup = ([TyCon], UniqSet TyCon)
-data PAInstance = PAInstance {
- painstDFun :: Var
- , painstOrigTyCon :: TyCon
- , painstVectTyCon :: TyCon
- , painstArrTyCon :: TyCon
- }
-
-vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [(Var, CoreExpr)])
+-- | Vectorise a type environment.
+-- The type environment contains all the type things defined in a module.
+vectTypeEnv
+ :: TypeEnv
+ -> VM ( TypeEnv -- Vectorised type environment.
+ , [FamInst] -- New type family instances.
+ , [(Var, CoreExpr)]) -- New top level bindings.
+
vectTypeEnv env
- = do
+ = dtrace (ppr env)
+ $ do
cs <- readGEnv $ mk_map . global_tycons
+
+ -- Split the list of TyCons into the ones we have to vectorise vs the
+ -- ones we can pass through unchanged. We also pass through algebraic
+ -- types that use non Haskell98 features, as we don't handle those.
let (conv_tcs, keep_tcs) = classifyTyCons cs groups
keep_dcs = concatMap tyConDataCons keep_tcs
+
zipWithM_ defTyCon keep_tcs keep_tcs
zipWithM_ defDataCon keep_dcs keep_dcs
+
new_tcs <- vectTyConDecls conv_tcs
let orig_tcs = keep_tcs ++ conv_tcs
- vect_tcs = keep_tcs ++ new_tcs
-
- repr_tcs <- zipWithM buildPReprTyCon orig_tcs vect_tcs
- parr_tcs <- zipWithM buildPArrayTyCon orig_tcs vect_tcs
- dfuns <- mapM mkPADFun vect_tcs
- defTyConPAs (zip vect_tcs dfuns)
- binds <- sequence (zipWith5 buildTyConBindings orig_tcs
- vect_tcs
- repr_tcs
- parr_tcs
- dfuns)
- let all_new_tcs = new_tcs ++ repr_tcs ++ parr_tcs
+ -- We don't need to make new representation types for dictionary
+ -- constructors. The constructors are always fully applied, and we don't
+ -- need to lift them to arrays as a dictionary of a particular type
+ -- always has the same value.
+ let vect_tcs = filter (not . isClassTyCon)
+ $ keep_tcs ++ new_tcs
+
+ (_, binds, inst_tcs) <- fixV $ \ ~(dfuns', _, _) ->
+ do
+ defTyConPAs (zipLazy vect_tcs dfuns')
+ reprs <- mapM tyConRepr vect_tcs
+ repr_tcs <- zipWith3M buildPReprTyCon orig_tcs vect_tcs reprs
+ pdata_tcs <- zipWith3M buildPDataTyCon orig_tcs vect_tcs reprs
+
+ dfuns <- sequence
+ $ zipWith5 buildTyConBindings
+ orig_tcs
+ vect_tcs
+ repr_tcs
+ pdata_tcs
+ reprs
+
+ binds <- takeHoisted
+ return (dfuns, binds, repr_tcs ++ pdata_tcs)
+
+ let all_new_tcs = new_tcs ++ inst_tcs
let new_env = extendTypeEnvList env
(map ATyCon all_new_tcs
++ [ADataCon dc | tc <- all_new_tcs
, dc <- tyConDataCons tc])
- return (new_env, map mkLocalFamInst (repr_tcs ++ parr_tcs), concat binds)
+ return (new_env, map mkLocalFamInst inst_tcs, binds)
where
tycons = typeEnvTyCons env
groups = tyConGroups tycons
mk_map env = listToUFM_Directly [(u, getUnique n /= u) | (u,n) <- nameEnvUniqueElts env]
- keep_tc tc = let dcs = tyConDataCons tc
- in
- defTyCon tc tc >> zipWithM_ defDataCon dcs dcs
-
-
-vectTyConDecls :: [TyCon] -> VM [TyCon]
-vectTyConDecls tcs = fixV $ \tcs' ->
- do
- mapM_ (uncurry defTyCon) (lazy_zip tcs tcs')
- mapM vectTyConDecl tcs
- where
- lazy_zip [] _ = []
- lazy_zip (x:xs) ~(y:ys) = (x,y) : lazy_zip xs ys
-
-vectTyConDecl :: TyCon -> VM TyCon
-vectTyConDecl tc
- = do
- name' <- cloneName mkVectTyConOcc name
- rhs' <- vectAlgTyConRhs (algTyConRhs tc)
-
- liftDs $ buildAlgTyCon name'
- tyvars
- [] -- no stupid theta
- rhs'
- rec_flag -- FIXME: is this ok?
- False -- FIXME: no generics
- False -- not GADT syntax
- Nothing -- not a family instance
- where
- name = tyConName tc
- tyvars = tyConTyVars tc
- rec_flag = boolToRecFlag (isRecursiveTyCon tc)
-
-vectAlgTyConRhs :: AlgTyConRhs -> VM AlgTyConRhs
-vectAlgTyConRhs (DataTyCon { data_cons = data_cons
- , is_enum = is_enum
- })
- = do
- data_cons' <- mapM vectDataCon data_cons
- zipWithM_ defDataCon data_cons data_cons'
- return $ DataTyCon { data_cons = data_cons'
- , is_enum = is_enum
- }
-
-vectDataCon :: DataCon -> VM DataCon
-vectDataCon dc
- | not . null $ dataConExTyVars dc = pprPanic "vectDataCon: existentials" (ppr dc)
- | not . null $ dataConEqSpec dc = pprPanic "vectDataCon: eq spec" (ppr dc)
- | otherwise
- = do
- name' <- cloneName mkVectDataConOcc name
- tycon' <- vectTyCon tycon
- arg_tys <- mapM vectType rep_arg_tys
-
- liftDs $ buildDataCon name'
- False -- not infix
- (map (const NotMarkedStrict) arg_tys)
- [] -- no labelled fields
- univ_tvs
- [] -- no existential tvs for now
- [] -- no eq spec for now
- [] -- no context
- arg_tys
- tycon'
- where
- name = dataConName dc
- univ_tvs = dataConUnivTyVars dc
- rep_arg_tys = dataConRepArgTys dc
- tycon = dataConTyCon dc
mk_fam_inst :: TyCon -> TyCon -> (TyCon, [Type])
mk_fam_inst fam_tc arg_tc
= (fam_tc, [mkTyConApp arg_tc . mkTyVarTys $ tyConTyVars arg_tc])
-buildPReprTyCon :: TyCon -> TyCon -> VM TyCon
-buildPReprTyCon orig_tc vect_tc
+
+buildPReprTyCon :: TyCon -> TyCon -> SumRepr -> VM TyCon
+buildPReprTyCon orig_tc vect_tc repr
= do
name <- cloneName mkPReprTyConOcc (tyConName orig_tc)
- rhs_ty <- buildPReprType vect_tc
+ -- rhs_ty <- buildPReprType vect_tc
+ rhs_ty <- sumReprType repr
prepr_tc <- builtin preprTyCon
liftDs $ buildSynTyCon name
tyvars
(SynonymTyCon rhs_ty)
+ (typeKind rhs_ty)
(Just $ mk_fam_inst prepr_tc vect_tc)
where
tyvars = tyConTyVars vect_tc
-data TyConRepr = ProdRepr {
- repr_prod_arg_tys :: [Type]
- , repr_prod_tycon :: TyCon
- , repr_prod_data_con :: DataCon
- , repr_prod_arr_tycon :: TyCon
- , repr_prod_arr_data_con :: DataCon
- , repr_type :: Type
- }
- | SumRepr {
- repr_tys :: [[Type]]
- , repr_prod_tycons :: [Maybe TyCon]
- , repr_prod_data_cons :: [Maybe DataCon]
- , repr_prod_tys :: [Type]
- , repr_sum_tycon :: TyCon
- , repr_type :: Type
- }
-
-arrShapeTys :: TyConRepr -> VM [Type]
-arrShapeTys (ProdRepr {}) = return [intPrimTy]
-arrShapeTys (SumRepr {})
- = do
- uarr <- builtin uarrTyCon
- return [intPrimTy, mkTyConApp uarr [intTy]]
-
-arrReprTys :: TyConRepr -> VM [Type]
-arrReprTys (ProdRepr { repr_prod_arg_tys = tys })
- = mapM mkPArrayType tys
-arrReprTys (SumRepr { repr_tys = tys })
- = concat `liftM` mapM (mapM mkPArrayType) (map mk_prod tys)
- where
- mk_prod [] = [unitTy]
- mk_prod tys = tys
-
-
-mkTyConRepr :: TyCon -> VM TyConRepr
-mkTyConRepr vect_tc
- | is_product
- = let
- [prod_arg_tys] = repr_tys
- arity = length prod_arg_tys
- in
- do
- prod_tycon <- builtin (prodTyCon arity)
- let [prod_data_con] = tyConDataCons prod_tycon
-
- (arr_tycon, _) <- parrayReprTyCon
- . mkTyConApp prod_tycon
- $ replicate arity unitTy
-
- let [arr_data_con] = tyConDataCons arr_tycon
-
- return $ ProdRepr {
- repr_prod_arg_tys = prod_arg_tys
- , repr_prod_tycon = prod_tycon
- , repr_prod_data_con = prod_data_con
- , repr_prod_arr_tycon = arr_tycon
- , repr_prod_arr_data_con = arr_data_con
- , repr_type = mkTyConApp prod_tycon prod_arg_tys
- }
-
- | otherwise
- = do
- uarr <- builtin uarrTyCon
- prod_tycons <- mapM (mk_tycon prodTyCon) repr_tys
- let prod_tys = zipWith mk_tc_app_maybe prod_tycons repr_tys
- sum_tycon <- builtin (sumTyCon $ length repr_tys)
- arr_repr_tys <- mapM (mapM mkPArrayType . arr_repr_elem_tys) repr_tys
-
- return $ SumRepr {
- repr_tys = 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_type = mkTyConApp sum_tycon prod_tys
- }
- where
- tyvars = tyConTyVars vect_tc
- data_cons = tyConDataCons vect_tc
- repr_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
-
-buildPReprType :: TyCon -> VM Type
-buildPReprType = liftM repr_type . mkTyConRepr
-
-buildToPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildToPRepr (ProdRepr {
- repr_prod_arg_tys = prod_arg_tys
- , repr_prod_data_con = prod_data_con
- , repr_type = repr_type
- })
- vect_tc prepr_tc _
+buildPRDict :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildPRDict vect_tc prepr_tc _ r
= do
- arg <- newLocalVar FSLIT("x") arg_ty
- vars <- mapM (newLocalVar FSLIT("x")) prod_arg_tys
-
- return . Lam arg
- . wrapFamInstBody prepr_tc var_tys
- $ Case (Var arg) (mkWildId arg_ty) repr_type
- [(DataAlt data_con, vars,
- mkConApp prod_data_con (map Type prod_arg_tys ++ map Var vars))]
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- arg_ty = mkTyConApp vect_tc var_tys
- [data_con] = tyConDataCons vect_tc
-
-buildToPRepr (SumRepr {
- repr_tys = repr_tys
- , repr_prod_data_cons = prod_data_cons
- , repr_prod_tys = prod_tys
- , repr_sum_tycon = sum_tycon
- , repr_type = repr_type
- })
- vect_tc prepr_tc _
- = do
- arg <- newLocalVar FSLIT("x") arg_ty
- vars <- mapM (mapM (newLocalVar FSLIT("x"))) repr_tys
-
- return . Lam arg
- . wrapFamInstBody prepr_tc var_tys
- . Case (Var arg) (mkWildId arg_ty) repr_type
- . zipWith4 mk_alt data_cons vars sum_data_cons
- . zipWith3 mk_prod prod_data_cons repr_tys $ map (map Var) vars
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- arg_ty = mkTyConApp vect_tc var_tys
- data_cons = tyConDataCons vect_tc
-
- sum_data_cons = tyConDataCons sum_tycon
-
- mk_alt dc vars sum_dc expr = (DataAlt dc, vars,
- mkConApp sum_dc (map Type prod_tys ++ [expr]))
-
- mk_prod _ _ [] = Var unitDataConId
- mk_prod _ _ [expr] = expr
- mk_prod (Just dc) tys exprs = mkConApp dc (map Type tys ++ exprs)
-
-buildFromPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromPRepr (ProdRepr {
- repr_prod_arg_tys = prod_arg_tys
- , repr_prod_data_con = prod_data_con
- , repr_type = repr_type
- })
- vect_tc prepr_tc _
- = do
- arg_ty <- mkPReprType res_ty
- arg <- newLocalVar FSLIT("x") arg_ty
- vars <- mapM (newLocalVar FSLIT("x")) prod_arg_tys
-
- return . Lam arg
- $ Case (unwrapFamInstScrut prepr_tc var_tys (Var arg))
- (mkWildId repr_type)
- res_ty
- [(DataAlt prod_data_con, vars,
- mkConApp data_con (map Type var_tys ++ map Var vars))]
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- ty_args = map Type var_tys
- res_ty = mkTyConApp vect_tc var_tys
- [data_con] = tyConDataCons vect_tc
-
-buildFromPRepr (SumRepr {
- repr_tys = repr_tys
- , repr_prod_data_cons = prod_data_cons
- , repr_prod_tys = prod_tys
- , repr_sum_tycon = sum_tycon
- , repr_type = repr_type
- })
- vect_tc prepr_tc _
- = do
- arg_ty <- mkPReprType res_ty
- arg <- newLocalVar FSLIT("x") arg_ty
-
- liftM (Lam arg
- . Case (unwrapFamInstScrut prepr_tc var_tys (Var arg))
- (mkWildId repr_type)
- res_ty
- . zipWith mk_alt sum_data_cons)
- (sequence
- $ zipWith4 un_prod data_cons prod_data_cons prod_tys repr_tys)
+ dict <- sum_dict r
+ pr_co <- mkBuiltinCo prTyCon
+ let co = mkAppCoercion pr_co
+ . mkSymCoercion
+ $ mkTyConApp arg_co ty_args
+ return (mkCoerce co dict)
where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- ty_args = map Type var_tys
- res_ty = mkTyConApp vect_tc var_tys
- data_cons = tyConDataCons vect_tc
-
- sum_data_cons = tyConDataCons sum_tycon
-
- un_prod dc _ _ []
- = do
- var <- newLocalVar FSLIT("u") unitTy
- return (var, mkConApp dc ty_args)
- un_prod dc _ _ [ty]
- = do
- var <- newLocalVar FSLIT("x") ty
- return (var, mkConApp dc (ty_args ++ [Var var]))
+ ty_args = mkTyVarTys (tyConTyVars vect_tc)
+ Just arg_co = tyConFamilyCoercion_maybe prepr_tc
- un_prod dc (Just prod_dc) prod_ty tys
+ sum_dict EmptySum = prDFunOfTyCon =<< builtin voidTyCon
+ sum_dict (UnarySum r) = con_dict r
+ sum_dict (Sum { repr_sum_tc = sum_tc
+ , repr_con_tys = tys
+ , repr_cons = cons
+ })
= do
- vars <- mapM (newLocalVar FSLIT("x")) tys
- pv <- newLocalVar FSLIT("p") prod_ty
-
- let res = mkConApp dc (ty_args ++ map Var vars)
- expr = Case (Var pv) (mkWildId prod_ty) res_ty
- [(DataAlt prod_dc, vars, res)]
-
- return (pv, expr)
-
- mk_alt sum_dc (var, expr) = (DataAlt sum_dc, [var], expr)
-
-
-buildToArrPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildToArrPRepr repr@(ProdRepr {
- repr_prod_arg_tys = prod_arg_tys
- , repr_prod_arr_tycon = prod_arr_tycon
- , repr_prod_arr_data_con = prod_arr_data_con
- , repr_type = repr_type
- })
- vect_tc prepr_tc arr_tc
- = do
- arg_ty <- mkPArrayType el_ty
- shape_tys <- arrShapeTys repr
- arr_tys <- arrReprTys repr
- res_ty <- mkPArrayType repr_type
- rep_el_ty <- mkPReprType el_ty
-
- arg <- newLocalVar FSLIT("xs") arg_ty
- shape_vars <- mapM (newLocalVar FSLIT("sh")) shape_tys
- rep_vars <- mapM (newLocalVar FSLIT("ys")) arr_tys
-
- let vars = shape_vars ++ rep_vars
-
- parray_co <- mkBuiltinCo parrayTyCon
-
- let res = wrapFamInstBody prod_arr_tycon prod_arg_tys
- . mkConApp prod_arr_data_con
- $ map Type prod_arg_tys ++ map Var vars
-
- Just repr_co = tyConFamilyCoercion_maybe prepr_tc
- co = mkAppCoercion parray_co
- . mkSymCoercion
- $ mkTyConApp repr_co var_tys
-
- return . Lam arg
- . mkCoerce co
- $ Case (unwrapFamInstScrut arr_tc var_tys (Var arg))
- (mkWildId (mkTyConApp arr_tc var_tys))
- res_ty
- [(DataAlt arr_dc, vars, res)]
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc var_tys
-
- [arr_dc] = tyConDataCons arr_tc
-
-
-buildToArrPRepr _ _ _ _ = return (Var unitDataConId)
-{-
-buildToArrPRepr _ vect_tc prepr_tc arr_tc
- = do
- arg_ty <- mkPArrayType el_ty
- rep_tys <- mapM (mapM mkPArrayType) rep_el_tys
-
- arg <- newLocalVar FSLIT("xs") arg_ty
- bndrss <- mapM (mapM (newLocalVar FSLIT("ys"))) rep_tys
- len <- newLocalVar FSLIT("len") intPrimTy
- sel <- newLocalVar FSLIT("sel") =<< mkPArrayType intTy
-
- let add_sel xs | has_selector = sel : xs
- | otherwise = xs
-
- all_bndrs = len : add_sel (concat bndrss)
-
- res <- parrayCoerce prepr_tc var_tys
- =<< mkToArrPRepr (Var len) (Var sel) (map (map Var) bndrss)
- res_ty <- mkPArrayType =<< mkPReprType el_ty
-
- return . Lam arg
- $ Case (unwrapFamInstScrut arr_tc var_tys (Var arg))
- (mkWildId (mkTyConApp arr_tc var_tys))
- res_ty
- [(DataAlt arr_dc, all_bndrs, res)]
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc var_tys
- data_cons = tyConDataCons vect_tc
- rep_el_tys = map dataConRepArgTys data_cons
-
- [arr_dc] = tyConDataCons arr_tc
-
- has_selector | [_] <- data_cons = False
- | otherwise = True
--}
-
-buildFromArrPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromArrPRepr repr@(ProdRepr {
- repr_prod_arg_tys = prod_arg_tys
- , repr_prod_arr_tycon = prod_arr_tycon
- , repr_prod_arr_data_con = prod_arr_data_con
- , repr_type = repr_type
- })
- vect_tc prepr_tc arr_tc
- = do
- rep_el_ty <- mkPReprType el_ty
- arg_ty <- mkPArrayType rep_el_ty
- shape_tys <- arrShapeTys repr
- arr_tys <- arrReprTys repr
- res_ty <- mkPArrayType el_ty
-
- arg <- newLocalVar FSLIT("xs") arg_ty
- shape_vars <- mapM (newLocalVar FSLIT("sh")) shape_tys
- rep_vars <- mapM (newLocalVar FSLIT("ys")) arr_tys
+ dicts <- mapM con_dict cons
+ dfun <- prDFunOfTyCon sum_tc
+ return $ dfun `mkTyApps` tys `mkApps` dicts
- let vars = shape_vars ++ rep_vars
-
- parray_co <- mkBuiltinCo parrayTyCon
-
- let res = wrapFamInstBody arr_tc var_tys
- . mkConApp arr_dc
- $ map Type var_tys ++ map Var vars
-
- Just repr_co = tyConFamilyCoercion_maybe prepr_tc
- co = mkAppCoercion parray_co
- $ mkTyConApp repr_co var_tys
-
- scrut = unwrapFamInstScrut prod_arr_tycon prod_arg_tys
- $ mkCoerce co (Var arg)
-
- return . Lam arg
- $ Case (scrut)
- (mkWildId (mkTyConApp prod_arr_tycon prod_arg_tys))
- res_ty
- [(DataAlt prod_arr_data_con, vars, res)]
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc var_tys
-
- [arr_dc] = tyConDataCons arr_tc
-buildFromArrPRepr _ _ _ _ = return (Var unitDataConId)
+ con_dict (ConRepr _ r) = prod_dict r
-buildPRDictRepr :: TyConRepr -> VM CoreExpr
-buildPRDictRepr (ProdRepr {
- repr_prod_arg_tys = prod_arg_tys
- , repr_prod_tycon = prod_tycon
- })
- = do
- prs <- mapM mkPR prod_arg_tys
- dfun <- prDFunOfTyCon prod_tycon
- return $ dfun `mkTyApps` prod_arg_tys `mkApps` prs
-
-buildPRDictRepr (SumRepr {
- repr_tys = repr_tys
- , repr_prod_tycons = prod_tycons
- , repr_prod_tys = prod_tys
- , repr_sum_tycon = sum_tycon
- })
- = do
- prs <- mapM (mapM mkPR) repr_tys
- prod_prs <- sequence $ zipWith3 mk_prod_pr prod_tycons repr_tys prs
- sum_dfun <- prDFunOfTyCon sum_tycon
- return $ sum_dfun `mkTyApps` prod_tys `mkApps` prod_prs
- where
- mk_prod_pr _ _ [] = prDFunOfTyCon unitTyCon
- mk_prod_pr _ _ [pr] = return pr
- mk_prod_pr (Just tc) tys prs
+ prod_dict EmptyProd = prDFunOfTyCon =<< builtin voidTyCon
+ prod_dict (UnaryProd r) = comp_dict r
+ prod_dict (Prod { repr_tup_tc = tup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
= do
- dfun <- prDFunOfTyCon tc
- return $ dfun `mkTyApps` tys `mkApps` prs
-
-buildPRDict :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildPRDict repr vect_tc prepr_tc _
- = do
- dict <- buildPRDictRepr repr
-
- pr_co <- mkBuiltinCo prTyCon
- let co = mkAppCoercion pr_co
- . mkSymCoercion
- $ mkTyConApp arg_co var_tys
+ dicts <- mapM comp_dict comps
+ dfun <- prDFunOfTyCon tup_tc
+ return $ dfun `mkTyApps` tys `mkApps` dicts
- return $ mkCoerce co dict
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ comp_dict (Keep _ pr) = return pr
+ comp_dict (Wrap ty) = wrapPR ty
- Just arg_co = tyConFamilyCoercion_maybe prepr_tc
-buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
-buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
+buildPDataTyCon :: TyCon -> TyCon -> SumRepr -> VM TyCon
+buildPDataTyCon orig_tc vect_tc repr = fixV $ \repr_tc ->
do
- name' <- cloneName mkPArrayTyConOcc orig_name
- rhs <- buildPArrayTyConRhs orig_name vect_tc repr_tc
- parray <- builtin parrayTyCon
+ name' <- cloneName mkPDataTyConOcc orig_name
+ rhs <- buildPDataTyConRhs orig_name vect_tc repr_tc repr
+ pdata <- builtin pdataTyCon
liftDs $ buildAlgTyCon name'
tyvars
rec_flag -- FIXME: is this ok?
False -- FIXME: no generics
False -- not GADT syntax
- (Just $ mk_fam_inst parray vect_tc)
+ (Just $ mk_fam_inst pdata vect_tc)
where
orig_name = tyConName orig_tc
tyvars = tyConTyVars vect_tc
rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
-
-buildPArrayTyConRhs :: Name -> TyCon -> TyCon -> VM AlgTyConRhs
-buildPArrayTyConRhs orig_name vect_tc repr_tc
+
+buildPDataTyConRhs :: Name -> TyCon -> TyCon -> SumRepr -> VM AlgTyConRhs
+buildPDataTyConRhs orig_name vect_tc repr_tc repr
= do
- data_con <- buildPArrayDataCon orig_name vect_tc repr_tc
+ data_con <- buildPDataDataCon orig_name vect_tc repr_tc repr
return $ DataTyCon { data_cons = [data_con], is_enum = False }
-buildPArrayDataCon :: Name -> TyCon -> TyCon -> VM DataCon
-buildPArrayDataCon orig_name vect_tc repr_tc
+buildPDataDataCon :: Name -> TyCon -> TyCon -> SumRepr -> VM DataCon
+buildPDataDataCon orig_name vect_tc repr_tc repr
= do
- dc_name <- cloneName mkPArrayDataConOcc orig_name
- repr <- mkTyConRepr vect_tc
-
- shape_tys <- arrShapeTys repr
- repr_tys <- arrReprTys repr
-
- let tys = shape_tys ++ repr_tys
+ dc_name <- cloneName mkPDataDataConOcc orig_name
+ comp_tys <- sum_tys repr
liftDs $ buildDataCon dc_name
False -- not infix
- (map (const NotMarkedStrict) tys)
+ (map (const HsNoBang) comp_tys)
[] -- no field labels
- (tyConTyVars vect_tc)
+ tvs
[] -- no existentials
[] -- no eq spec
[] -- no context
- tys
+ comp_tys
+ (mkFamilyTyConApp repr_tc (mkTyVarTys tvs))
repr_tc
+ where
+ tvs = tyConTyVars vect_tc
+
+ sum_tys EmptySum = return []
+ sum_tys (UnarySum r) = con_tys r
+ sum_tys (Sum { repr_sel_ty = sel_ty
+ , repr_cons = cons })
+ = liftM (sel_ty :) (concatMapM con_tys cons)
-mkPADFun :: TyCon -> VM Var
-mkPADFun vect_tc
- = newExportedVar (mkPADFunOcc $ getOccName vect_tc) =<< paDFunType vect_tc
-
-data Shape = Shape {
- shapeReprTys :: [Type]
- , shapeStrictness :: [StrictnessMark]
- , shapeLength :: [CoreExpr] -> VM CoreExpr
- , shapeReplicate :: CoreExpr -> CoreExpr -> VM [CoreExpr]
- }
-
-tyConShape :: TyCon -> VM Shape
-tyConShape vect_tc
- | isProductTyCon vect_tc
- = return $ Shape {
- shapeReprTys = [intPrimTy]
- , shapeStrictness = [NotMarkedStrict]
- , shapeLength = \[len] -> return len
- , shapeReplicate = \len _ -> return [len]
- }
-
- | otherwise
+ con_tys (ConRepr _ r) = prod_tys r
+
+ prod_tys EmptyProd = return []
+ prod_tys (UnaryProd r) = liftM singleton (comp_ty r)
+ prod_tys (Prod { repr_comps = comps }) = mapM comp_ty comps
+
+ comp_ty r = mkPDataType (compOrigType r)
+
+
+buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> SumRepr
+ -> VM Var
+buildTyConBindings orig_tc vect_tc prepr_tc pdata_tc repr
= do
- repr_ty <- mkPArrayType intTy -- FIXME: we want to unbox this
- return $ Shape {
- shapeReprTys = [repr_ty]
- , shapeStrictness = [MarkedStrict]
- , shapeLength = \[sel] -> lengthPA sel
- , shapeReplicate = \len n -> do
- e <- replicatePA len n
- return [e]
- }
-
-buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> Var
- -> VM [(Var, CoreExpr)]
-buildTyConBindings orig_tc vect_tc prepr_tc arr_tc dfun
+ vectDataConWorkers orig_tc vect_tc pdata_tc
+ buildPADict vect_tc prepr_tc pdata_tc repr
+
+vectDataConWorkers :: TyCon -> TyCon -> TyCon -> VM ()
+vectDataConWorkers orig_tc vect_tc arr_tc
= do
- shape <- tyConShape vect_tc
- repr <- mkTyConRepr vect_tc
- sequence_ (zipWith4 (vectDataConWorker shape vect_tc arr_tc arr_dc)
- orig_dcs
- vect_dcs
- (inits repr_tys)
- (tails repr_tys))
- dict <- buildPADict repr vect_tc prepr_tc arr_tc dfun
- binds <- takeHoisted
- return $ (dfun, dict) : binds
+ bs <- sequence
+ . zipWith3 def_worker (tyConDataCons orig_tc) rep_tys
+ $ zipWith4 mk_data_con (tyConDataCons vect_tc)
+ rep_tys
+ (inits rep_tys)
+ (tail $ tails rep_tys)
+ mapM_ (uncurry hoistBinding) bs
where
- orig_dcs = tyConDataCons orig_tc
- vect_dcs = tyConDataCons vect_tc
+ tyvars = tyConTyVars vect_tc
+ var_tys = mkTyVarTys tyvars
+ ty_args = map Type var_tys
+ res_ty = mkTyConApp vect_tc var_tys
+
+ cons = tyConDataCons vect_tc
+ arity = length cons
[arr_dc] = tyConDataCons arr_tc
- repr_tys = map dataConRepArgTys vect_dcs
+ rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
-vectDataConWorker :: Shape -> TyCon -> TyCon -> DataCon
- -> DataCon -> DataCon -> [[Type]] -> [[Type]]
- -> VM ()
-vectDataConWorker shape vect_tc arr_tc arr_dc orig_dc vect_dc pre (dc_tys : post)
- = do
- clo <- closedV
- . inBind orig_worker
- . polyAbstract tvs $ \abstract ->
- liftM (abstract . vectorised)
- $ buildClosures tvs [] dc_tys res_ty (liftM2 (,) mk_vect mk_lift)
-
- worker <- cloneId mkVectOcc orig_worker (exprType clo)
- hoistBinding worker clo
- defGlobalVar orig_worker worker
- return ()
- where
- tvs = tyConTyVars vect_tc
- arg_tys = mkTyVarTys tvs
- res_ty = mkTyConApp vect_tc arg_tys
-
- orig_worker = dataConWorkId orig_dc
-
- mk_vect = return . mkConApp vect_dc $ map Type arg_tys
- mk_lift = do
- len <- newLocalVar FSLIT("n") intPrimTy
- arr_tys <- mapM mkPArrayType dc_tys
- args <- mapM (newLocalVar FSLIT("xs")) arr_tys
- shapes <- shapeReplicate shape
- (Var len)
- (mkDataConTag vect_dc)
-
- empty_pre <- mapM emptyPA (concat pre)
- empty_post <- mapM emptyPA (concat post)
-
- return . mkLams (len : args)
- . wrapFamInstBody arr_tc arg_tys
- . mkConApp arr_dc
- $ map Type arg_tys ++ shapes
- ++ empty_pre
- ++ map Var args
- ++ empty_post
-
-buildPADict :: TyConRepr -> TyCon -> TyCon -> TyCon -> Var -> VM CoreExpr
-buildPADict repr vect_tc prepr_tc arr_tc dfun
- = polyAbstract tvs $ \abstract ->
- do
- meth_binds <- mapM (mk_method repr) paMethods
- let meth_exprs = map (Var . fst) meth_binds
- pa_dc <- builtin paDataCon
- let dict = mkConApp pa_dc (Type (mkTyConApp vect_tc arg_tys) : meth_exprs)
- body = Let (Rec meth_binds) dict
- return . mkInlineMe $ abstract body
- where
- tvs = tyConTyVars arr_tc
- arg_tys = mkTyVarTys tvs
+ mk_data_con con tys pre post
+ = liftM2 (,) (vect_data_con con)
+ (lift_data_con tys pre post (mkDataConTag con))
- mk_method repr (name, build)
- = localV
- $ do
- body <- build repr vect_tc prepr_tc arr_tc
- var <- newLocalVar name (exprType body)
- return (var, mkInlineMe body)
-
-paMethods = [(FSLIT("toPRepr"), buildToPRepr),
- (FSLIT("fromPRepr"), buildFromPRepr),
- (FSLIT("toArrPRepr"), buildToArrPRepr),
- (FSLIT("fromArrPRepr"), buildFromArrPRepr),
- (FSLIT("dictPRepr"), buildPRDict)]
-
--- | Split the given tycons into two sets depending on whether they have to be
--- converted (first list) or not (second list). The first argument contains
--- information about the conversion status of external tycons:
---
--- * tycons which have converted versions are mapped to True
--- * tycons which are not changed by vectorisation are mapped to False
--- * tycons which can't be converted are not elements of the map
---
-classifyTyCons :: UniqFM Bool -> [TyConGroup] -> ([TyCon], [TyCon])
-classifyTyCons = classify [] []
- where
- classify conv keep cs [] = (conv, keep)
- classify conv keep cs ((tcs, ds) : rs)
- | can_convert && must_convert
- = classify (tcs ++ conv) keep (cs `addListToUFM` [(tc,True) | tc <- tcs]) rs
- | can_convert
- = classify conv (tcs ++ keep) (cs `addListToUFM` [(tc,False) | tc <- tcs]) rs
- | otherwise
- = classify conv keep cs rs
- where
- refs = ds `delListFromUniqSet` tcs
+ sel_replicate len tag
+ | arity > 1 = do
+ rep <- builtin (selReplicate arity)
+ return [rep `mkApps` [len, tag]]
- can_convert = isNullUFM (refs `minusUFM` cs) && all convertable tcs
- must_convert = foldUFM (||) False (intersectUFM_C const cs refs)
+ | otherwise = return []
- convertable tc = isDataTyCon tc && all isVanillaDataCon (tyConDataCons tc)
-
--- | Compute mutually recursive groups of tycons in topological order
---
-tyConGroups :: [TyCon] -> [TyConGroup]
-tyConGroups tcs = map mk_grp (stronglyConnComp edges)
- where
- edges = [((tc, ds), tc, uniqSetToList ds) | tc <- tcs
- , let ds = tyConsOfTyCon tc]
+ vect_data_con con = return $ mkConApp con ty_args
+ lift_data_con tys pre_tys post_tys tag
+ = do
+ len <- builtin liftingContext
+ args <- mapM (newLocalVar (fsLit "xs"))
+ =<< mapM mkPDataType tys
+
+ sel <- sel_replicate (Var len) tag
+
+ pre <- mapM emptyPD (concat pre_tys)
+ post <- mapM emptyPD (concat post_tys)
+
+ return . mkLams (len : args)
+ . wrapFamInstBody arr_tc var_tys
+ . mkConApp arr_dc
+ $ ty_args ++ sel ++ pre ++ map Var args ++ post
- mk_grp (AcyclicSCC (tc, ds)) = ([tc], ds)
- mk_grp (CyclicSCC els) = (tcs, unionManyUniqSets dss)
+ def_worker data_con arg_tys mk_body
+ = do
+ arity <- polyArity tyvars
+ body <- closedV
+ . inBind orig_worker
+ . polyAbstract tyvars $ \args ->
+ liftM (mkLams (tyvars ++ args) . vectorised)
+ $ buildClosures tyvars [] arg_tys res_ty mk_body
+
+ raw_worker <- cloneId mkVectOcc orig_worker (exprType body)
+ let vect_worker = raw_worker `setIdUnfolding`
+ mkInlineRule body (Just arity)
+ defGlobalVar orig_worker vect_worker
+ return (vect_worker, body)
where
- (tcs, dss) = unzip els
+ orig_worker = dataConWorkId data_con
+
+buildPADict :: TyCon -> TyCon -> TyCon -> SumRepr -> VM Var
+buildPADict vect_tc prepr_tc arr_tc repr
+ = polyAbstract tvs $ \args ->
+ do
+ method_ids <- mapM (method args) paMethods
+
+ pa_tc <- builtin paTyCon
+ pa_dc <- builtin paDataCon
+ let dict = mkLams (tvs ++ args)
+ $ mkConApp pa_dc
+ $ Type inst_ty : map (method_call args) method_ids
-tyConsOfTyCon :: TyCon -> UniqSet TyCon
-tyConsOfTyCon
- = tyConsOfTypes . concatMap dataConRepArgTys . tyConDataCons
+ dfun_ty = mkForAllTys tvs
+ $ mkFunTys (map varType args) (mkTyConApp pa_tc [inst_ty])
-tyConsOfType :: Type -> UniqSet TyCon
-tyConsOfType ty
- | Just ty' <- coreView ty = tyConsOfType ty'
-tyConsOfType (TyVarTy v) = emptyUniqSet
-tyConsOfType (TyConApp tc tys) = extend (tyConsOfTypes tys)
+ raw_dfun <- newExportedVar dfun_name dfun_ty
+ let dfun = raw_dfun `setIdUnfolding` mkDFunUnfolding dfun_ty (map Var method_ids)
+ `setInlinePragma` dfunInlinePragma
+
+ hoistBinding dfun dict
+ return dfun
where
- extend | isUnLiftedTyCon tc
- || isTupleTyCon tc = id
+ tvs = tyConTyVars vect_tc
+ arg_tys = mkTyVarTys tvs
+ inst_ty = mkTyConApp vect_tc arg_tys
+
+ dfun_name = mkPADFunOcc (getOccName vect_tc)
+
+ method args (name, build)
+ = localV
+ $ do
+ expr <- build vect_tc prepr_tc arr_tc repr
+ let body = mkLams (tvs ++ args) expr
+ raw_var <- newExportedVar (method_name name) (exprType body)
+ let var = raw_var
+ `setIdUnfolding` mkInlineRule body (Just (length args))
+ `setInlinePragma` alwaysInlinePragma
+ hoistBinding var body
+ return var
+
+ method_call args id = mkApps (Var id) (map Type arg_tys ++ map Var args)
+
+ method_name name = mkVarOcc $ occNameString dfun_name ++ ('$' : name)
- | otherwise = (`addOneToUniqSet` tc)
-tyConsOfType (AppTy a b) = tyConsOfType a `unionUniqSets` tyConsOfType b
-tyConsOfType (FunTy a b) = (tyConsOfType a `unionUniqSets` tyConsOfType b)
- `addOneToUniqSet` funTyCon
-tyConsOfType (ForAllTy _ ty) = tyConsOfType ty
-tyConsOfType other = pprPanic "ClosureConv.tyConsOfType" $ ppr other
+paMethods :: [(String, TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr)]
+paMethods = [("dictPRepr", buildPRDict),
+ ("toPRepr", buildToPRepr),
+ ("fromPRepr", buildFromPRepr),
+ ("toArrPRepr", buildToArrPRepr),
+ ("fromArrPRepr", buildFromArrPRepr)]
-tyConsOfTypes :: [Type] -> UniqSet TyCon
-tyConsOfTypes = unionManyUniqSets . map tyConsOfType