+{-# OPTIONS -fno-warn-missing-signatures #-}
+
module VectType ( vectTyCon, vectAndLiftType, vectType, vectTypeEnv,
-- arrSumArity, pdataCompTys, pdataCompVars,
buildPADict,
fromVect )
where
-import VectMonad
import VectUtils
-import VectCore
+import Vectorise.Env
+import Vectorise.Vect
+import Vectorise.Monad
+import Vectorise.Builtins
+import Vectorise.Type.Type
+import Vectorise.Type.TyConDecl
+import Vectorise.Type.Classify
+import Vectorise.Utils.Closure
import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
+import BasicTypes
import CoreSyn
import CoreUtils
+import CoreUnfold
import MkCore ( mkWildCase )
import BuildTyCl
import DataCon
import Coercion
import FamInstEnv ( FamInst, mkLocalFamInst )
import OccName
+import Id
import MkId
-import BasicTypes ( StrictnessMark(..), boolToRecFlag )
-import Var ( Var, TyVar )
+import Var
import Name ( Name, getOccName )
import NameEnv
import Unique
import UniqFM
-import UniqSet
import Util
-import Digraph ( SCC(..), stronglyConnCompFromEdgedVertices )
import Outputable
import FastString
+import MonadUtils ( zipWith3M, foldrM, concatMapM )
import Control.Monad ( liftM, liftM2, zipWithM, zipWithM_, mapAndUnzipM )
-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 = maybeCantVectoriseM "Tycon not vectorised:" (ppr tc)
- $ lookupTyCon tc
-
-vectAndLiftType :: Type -> VM (Type, Type)
-vectAndLiftType ty | Just ty' <- coreView ty = vectAndLiftType ty'
-vectAndLiftType ty
- = do
- mdicts <- mapM paDictArgType tyvars
- let dicts = [dict | Just dict <- mdicts]
- vmono_ty <- vectType mono_ty
- lmono_ty <- mkPDataType vmono_ty
- return (abstractType tyvars dicts vmono_ty,
- abstractType tyvars dicts lmono_ty)
- where
- (tyvars, mono_ty) = splitForAllTys ty
-
+import Data.List
-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 vectAndBoxType [ty1,ty2])
-vectType ty@(ForAllTy _ _)
- = do
- mdicts <- mapM paDictArgType tyvars
- mono_ty' <- vectType mono_ty
- return $ abstractType tyvars [dict | Just dict <- mdicts] mono_ty'
- where
- (tyvars, mono_ty) = splitForAllTys ty
+debug = False
+dtrace s x = if debug then pprTrace "VectType" s x else x
-vectType ty = cantVectorise "Can't vectorise type" (ppr ty)
-
-vectAndBoxType :: Type -> VM Type
-vectAndBoxType ty = vectType ty >>= boxType
-
-abstractType :: [TyVar] -> [Type] -> Type -> Type
-abstractType tyvars dicts = mkForAllTys tyvars . mkFunTys dicts
-
--- ----------------------------------------------------------------------------
--- Boxing
-
-boxType :: Type -> VM Type
-boxType ty
- | Just (tycon, []) <- splitTyConApp_maybe ty
- , isUnLiftedTyCon tycon
- = do
- r <- lookupBoxedTyCon tycon
- case r of
- Just tycon' -> return $ mkTyConApp tycon' []
- Nothing -> return ty
-boxType ty = return ty
-- ----------------------------------------------------------------------------
-- Type definitions
-type TyConGroup = ([TyCon], UniqSet TyCon)
+-- | Vectorise a type environment.
+-- The type environment contains all the type things defined in a module.
vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [(Var, CoreExpr)])
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
- pdata_tcs <- zipWithM buildPDataTyCon orig_tcs vect_tcs
- dfuns <- mapM mkPADFun vect_tcs
- defTyConPAs (zip vect_tcs dfuns)
- binds <- sequence (zipWith5 buildTyConBindings orig_tcs
- vect_tcs
- repr_tcs
- pdata_tcs
- dfuns)
- let all_new_tcs = new_tcs ++ repr_tcs ++ pdata_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 ++ pdata_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]
-vectTyConDecls :: [TyCon] -> VM [TyCon]
-vectTyConDecls tcs = fixV $ \tcs' ->
- do
- mapM_ (uncurry defTyCon) (zipLazy tcs tcs')
- mapM vectTyConDecl tcs
-
-vectTyConDecl :: TyCon -> VM TyCon
-vectTyConDecl tc
- = do
- name' <- cloneName mkVectTyConOcc name
- rhs' <- vectAlgTyConRhs tc (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 :: TyCon -> 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
- }
-vectAlgTyConRhs tc _ = cantVectorise "Can't vectorise type definition:" (ppr tc)
-
-vectDataCon :: DataCon -> VM DataCon
-vectDataCon dc
- | not . null $ dataConExTyVars dc
- = cantVectorise "Can't vectorise constructor (existentials):" (ppr dc)
- | not . null $ dataConEqSpec dc
- = cantVectorise "Can't vectorise constructor (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
- (mkFamilyTyConApp tycon' (mkTyVarTys univ_tvs))
- 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
where
tyvars = tyConTyVars vect_tc
-buildPReprType :: TyCon -> VM Type
-buildPReprType vect_tc = sum_type . map dataConRepArgTys $ tyConDataCons vect_tc
- where
- sum_type [] = voidType
- sum_type [tys] = prod_type tys
- sum_type _ = do
- (sum_tc, _, _, args) <- reprSumTyCons vect_tc
- return $ mkTyConApp sum_tc args
-
- prod_type [] = voidType
- prod_type [ty] = return ty
- prod_type tys = do
- prod_tc <- builtin (prodTyCon (length tys))
- return $ mkTyConApp prod_tc tys
-
-reprSumTyCons :: TyCon -> VM (TyCon, TyCon, Type, [Type])
-reprSumTyCons vect_tc
- = do
- tc <- builtin (sumTyCon arity)
- args <- mapM (prod . dataConRepArgTys) cons
- (pdata_tc, _) <- pdataReprTyCon (mkTyConApp tc args)
- sel_ty <- builtin (selTy arity)
- return (tc, pdata_tc, sel_ty, args)
+data CompRepr = Keep Type
+ CoreExpr -- PR dictionary for the type
+ | Wrap Type
+
+data ProdRepr = EmptyProd
+ | UnaryProd CompRepr
+ | Prod { repr_tup_tc :: TyCon -- representation tuple tycon
+ , repr_ptup_tc :: TyCon -- PData representation tycon
+ , repr_comp_tys :: [Type] -- representation types of
+ , repr_comps :: [CompRepr] -- components
+ }
+data ConRepr = ConRepr DataCon ProdRepr
+
+data SumRepr = EmptySum
+ | UnarySum ConRepr
+ | Sum { repr_sum_tc :: TyCon -- representation sum tycon
+ , repr_psum_tc :: TyCon -- PData representation tycon
+ , repr_sel_ty :: Type -- type of selector
+ , repr_con_tys :: [Type] -- representation types of
+ , repr_cons :: [ConRepr] -- components
+ }
+
+tyConRepr :: TyCon -> VM SumRepr
+tyConRepr tc = sum_repr (tyConDataCons tc)
where
- cons = tyConDataCons vect_tc
- arity = length cons
-
- prod [] = voidType
- prod [ty] = return ty
- prod tys = do
- prod_tc <- builtin (prodTyCon (length tys))
- return $ mkTyConApp prod_tc tys
-
-buildToPRepr :: TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildToPRepr vect_tc repr_tc _
+ sum_repr [] = return EmptySum
+ sum_repr [con] = liftM UnarySum (con_repr con)
+ sum_repr cons = do
+ rs <- mapM con_repr cons
+ sum_tc <- builtin (sumTyCon arity)
+ tys <- mapM conReprType rs
+ (psum_tc, _) <- pdataReprTyCon (mkTyConApp sum_tc tys)
+ sel_ty <- builtin (selTy arity)
+ return $ Sum { repr_sum_tc = sum_tc
+ , repr_psum_tc = psum_tc
+ , repr_sel_ty = sel_ty
+ , repr_con_tys = tys
+ , repr_cons = rs
+ }
+ where
+ arity = length cons
+
+ con_repr con = liftM (ConRepr con) (prod_repr (dataConRepArgTys con))
+
+ prod_repr [] = return EmptyProd
+ prod_repr [ty] = liftM UnaryProd (comp_repr ty)
+ prod_repr tys = do
+ rs <- mapM comp_repr tys
+ tup_tc <- builtin (prodTyCon arity)
+ tys' <- mapM compReprType rs
+ (ptup_tc, _) <- pdataReprTyCon (mkTyConApp tup_tc tys')
+ return $ Prod { repr_tup_tc = tup_tc
+ , repr_ptup_tc = ptup_tc
+ , repr_comp_tys = tys'
+ , repr_comps = rs
+ }
+ where
+ arity = length tys
+
+ comp_repr ty = liftM (Keep ty) (prDictOfType ty)
+ `orElseV` return (Wrap ty)
+
+sumReprType :: SumRepr -> VM Type
+sumReprType EmptySum = voidType
+sumReprType (UnarySum r) = conReprType r
+sumReprType (Sum { repr_sum_tc = sum_tc, repr_con_tys = tys })
+ = return $ mkTyConApp sum_tc tys
+
+conReprType :: ConRepr -> VM Type
+conReprType (ConRepr _ r) = prodReprType r
+
+prodReprType :: ProdRepr -> VM Type
+prodReprType EmptyProd = voidType
+prodReprType (UnaryProd r) = compReprType r
+prodReprType (Prod { repr_tup_tc = tup_tc, repr_comp_tys = tys })
+ = return $ mkTyConApp tup_tc tys
+
+compReprType :: CompRepr -> VM Type
+compReprType (Keep ty _) = return ty
+compReprType (Wrap ty) = do
+ wrap_tc <- builtin wrapTyCon
+ return $ mkTyConApp wrap_tc [ty]
+
+compOrigType :: CompRepr -> Type
+compOrigType (Keep ty _) = ty
+compOrigType (Wrap ty) = ty
+
+buildToPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildToPRepr vect_tc repr_tc _ repr
= do
let arg_ty = mkTyConApp vect_tc ty_args
res_ty <- mkPReprType arg_ty
arg <- newLocalVar (fsLit "x") arg_ty
- result <- to_sum (Var arg) arg_ty res_ty (tyConDataCons vect_tc)
+ result <- to_sum (Var arg) arg_ty res_ty repr
return $ Lam arg result
where
ty_args = mkTyVarTys (tyConTyVars vect_tc)
- wrap = wrapFamInstBody repr_tc ty_args
+ wrap_repr_inst = wrapFamInstBody repr_tc ty_args
- to_sum _ _ _ []
+ to_sum _ _ _ EmptySum
= do
void <- builtin voidVar
- return $ wrap (Var void)
+ return $ wrap_repr_inst $ Var void
- to_sum arg arg_ty res_ty [con]
+ to_sum arg arg_ty res_ty (UnarySum r)
= do
- (prod, vars) <- to_prod (dataConRepArgTys con)
+ (pat, vars, body) <- con_alt r
return $ mkWildCase arg arg_ty res_ty
- [(DataAlt con, vars, wrap prod)]
+ [(pat, vars, wrap_repr_inst body)]
- to_sum arg arg_ty res_ty cons
+ to_sum arg arg_ty res_ty (Sum { repr_sum_tc = sum_tc
+ , repr_con_tys = tys
+ , repr_cons = cons })
= do
- (prods, vars) <- mapAndUnzipM (to_prod . dataConRepArgTys) cons
- (sum_tc, _, _, sum_ty_args) <- reprSumTyCons vect_tc
- let sum_cons = [mkConApp con (map Type sum_ty_args)
- | con <- tyConDataCons sum_tc]
- return . mkWildCase arg arg_ty res_ty
- $ zipWith4 mk_alt cons vars sum_cons prods
- where
- mk_alt con vars sum_con expr
- = (DataAlt con, vars, wrap $ sum_con `App` expr)
+ alts <- mapM con_alt cons
+ let alts' = [(pat, vars, wrap_repr_inst
+ $ mkConApp sum_con (map Type tys ++ [body]))
+ | ((pat, vars, body), sum_con)
+ <- zip alts (tyConDataCons sum_tc)]
+ return $ mkWildCase arg arg_ty res_ty alts'
+
+ con_alt (ConRepr con r)
+ = do
+ (vars, body) <- to_prod r
+ return (DataAlt con, vars, body)
- to_prod []
+ to_prod EmptyProd
= do
void <- builtin voidVar
- return (Var void, [])
- to_prod [ty]
+ return ([], Var void)
+
+ to_prod (UnaryProd comp)
= do
- var <- newLocalVar (fsLit "x") ty
- return (Var var, [var])
- to_prod tys
+ var <- newLocalVar (fsLit "x") (compOrigType comp)
+ body <- to_comp (Var var) comp
+ return ([var], body)
+
+ to_prod(Prod { repr_tup_tc = tup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
= do
- prod_con <- builtin (prodDataCon (length tys))
- vars <- newLocalVars (fsLit "x") tys
- return (mkConApp prod_con (map Type tys ++ map Var vars), vars)
+ vars <- newLocalVars (fsLit "x") (map compOrigType comps)
+ exprs <- zipWithM to_comp (map Var vars) comps
+ return (vars, mkConApp tup_con (map Type tys ++ exprs))
+ where
+ [tup_con] = tyConDataCons tup_tc
+
+ to_comp expr (Keep _ _) = return expr
+ to_comp expr (Wrap ty) = do
+ wrap_tc <- builtin wrapTyCon
+ return $ wrapNewTypeBody wrap_tc [ty] expr
-buildFromPRepr :: TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromPRepr vect_tc repr_tc _
+
+buildFromPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildFromPRepr vect_tc repr_tc _ repr
= do
arg_ty <- mkPReprType res_ty
arg <- newLocalVar (fsLit "x") arg_ty
result <- from_sum (unwrapFamInstScrut repr_tc ty_args (Var arg))
- (tyConDataCons vect_tc)
+ repr
return $ Lam arg result
where
ty_args = mkTyVarTys (tyConTyVars vect_tc)
res_ty = mkTyConApp vect_tc ty_args
- from_sum _ [] = pprPanic "buildFromPRepr" (ppr vect_tc)
- from_sum expr [con] = from_prod expr con
- from_sum expr cons
+ from_sum _ EmptySum
= do
- (sum_tc, _, _, sum_ty_args) <- reprSumTyCons vect_tc
- let sum_cons = tyConDataCons sum_tc
- vars <- newLocalVars (fsLit "x") sum_ty_args
- prods <- zipWithM from_prod (map Var vars) cons
- return . mkWildCase expr (exprType expr) res_ty
- $ zipWith3 mk_alt sum_cons vars prods
- where
- mk_alt con var expr = (DataAlt con, [var], expr)
-
- from_prod expr con
- = case dataConRepArgTys con of
- [] -> return $ apply_con []
- [_] -> return $ apply_con [expr]
- tys -> do
- prod_con <- builtin (prodDataCon (length tys))
- vars <- newLocalVars (fsLit "y") tys
- return $ mkWildCase expr (exprType expr) res_ty
- [(DataAlt prod_con, vars, apply_con (map Var vars))]
+ dummy <- builtin fromVoidVar
+ return $ Var dummy `App` Type res_ty
+
+ from_sum expr (UnarySum r) = from_con expr r
+ from_sum expr (Sum { repr_sum_tc = sum_tc
+ , repr_con_tys = tys
+ , repr_cons = cons })
+ = do
+ vars <- newLocalVars (fsLit "x") tys
+ es <- zipWithM from_con (map Var vars) cons
+ return $ mkWildCase expr (exprType expr) res_ty
+ [(DataAlt con, [var], e)
+ | (con, var, e) <- zip3 (tyConDataCons sum_tc) vars es]
+
+ from_con expr (ConRepr con r)
+ = from_prod expr (mkConApp con $ map Type ty_args) r
+
+ from_prod _ con EmptyProd = return con
+ from_prod expr con (UnaryProd r)
+ = do
+ e <- from_comp expr r
+ return $ con `App` e
+
+ from_prod expr con (Prod { repr_tup_tc = tup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps
+ })
+ = do
+ vars <- newLocalVars (fsLit "y") tys
+ es <- zipWithM from_comp (map Var vars) comps
+ return $ mkWildCase expr (exprType expr) res_ty
+ [(DataAlt tup_con, vars, con `mkApps` es)]
where
- apply_con exprs = mkConApp con (map Type ty_args) `mkApps` exprs
+ [tup_con] = tyConDataCons tup_tc
+
+ from_comp expr (Keep _ _) = return expr
+ from_comp expr (Wrap ty)
+ = do
+ wrap <- builtin wrapTyCon
+ return $ unwrapNewTypeBody wrap [ty] expr
-buildToArrPRepr :: TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildToArrPRepr vect_tc prepr_tc pdata_tc
+
+buildToArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildToArrPRepr vect_tc prepr_tc pdata_tc r
= do
arg_ty <- mkPDataType el_ty
res_ty <- mkPDataType =<< mkPReprType el_ty
scrut = unwrapFamInstScrut pdata_tc ty_args (Var arg)
- (vars, result) <- to_sum (tyConDataCons vect_tc)
+ (vars, result) <- to_sum r
return . Lam arg
$ mkWildCase scrut (mkTyConApp pdata_tc ty_args) res_ty
[pdata_dc] = tyConDataCons pdata_tc
- to_sum [] = do
- pvoid <- builtin pvoidVar
- return ([], Var pvoid)
- to_sum [con] = to_prod con
- to_sum cons = do
- (vars, exprs) <- mapAndUnzipM to_prod cons
- (_, pdata_tc, sel_ty, arg_tys) <- reprSumTyCons vect_tc
- sel <- newLocalVar (fsLit "sel") sel_ty
- let [pdata_con] = tyConDataCons pdata_tc
- result = wrapFamInstBody pdata_tc arg_tys
- . mkConApp pdata_con
- $ map Type arg_tys ++ (Var sel : exprs)
- return (sel : concat vars, result)
-
- to_prod con
- | [] <- tys = do
- pvoid <- builtin pvoidVar
- return ([], Var pvoid)
- | [ty] <- tys = do
- var <- newLocalVar (fsLit "x") ty
- return ([var], Var var)
- | otherwise
- = do
- vars <- newLocalVars (fsLit "x") tys
- prod_tc <- builtin (prodTyCon (length tys))
- (pdata_prod_tc, _) <- pdataReprTyCon (mkTyConApp prod_tc tys)
- let [pdata_prod_con] = tyConDataCons pdata_prod_tc
- result = wrapFamInstBody pdata_prod_tc tys
- . mkConApp pdata_prod_con
- $ map Type tys ++ map Var vars
- return (vars, result)
+
+ to_sum EmptySum = do
+ pvoid <- builtin pvoidVar
+ return ([], Var pvoid)
+ to_sum (UnarySum r) = to_con r
+ to_sum (Sum { repr_psum_tc = psum_tc
+ , repr_sel_ty = sel_ty
+ , repr_con_tys = tys
+ , repr_cons = cons
+ })
+ = do
+ (vars, exprs) <- mapAndUnzipM to_con cons
+ sel <- newLocalVar (fsLit "sel") sel_ty
+ return (sel : concat vars, mk_result (Var sel) exprs)
where
- tys = dataConRepArgTys con
+ [psum_con] = tyConDataCons psum_tc
+ mk_result sel exprs = wrapFamInstBody psum_tc tys
+ $ mkConApp psum_con
+ $ map Type tys ++ (sel : exprs)
-buildFromArrPRepr :: TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromArrPRepr vect_tc prepr_tc pdata_tc
+ to_con (ConRepr _ r) = to_prod r
+
+ to_prod EmptyProd = do
+ pvoid <- builtin pvoidVar
+ return ([], Var pvoid)
+ to_prod (UnaryProd r)
+ = do
+ pty <- mkPDataType (compOrigType r)
+ var <- newLocalVar (fsLit "x") pty
+ expr <- to_comp (Var var) r
+ return ([var], expr)
+
+ to_prod (Prod { repr_ptup_tc = ptup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
+ = do
+ ptys <- mapM (mkPDataType . compOrigType) comps
+ vars <- newLocalVars (fsLit "x") ptys
+ es <- zipWithM to_comp (map Var vars) comps
+ return (vars, mk_result es)
+ where
+ [ptup_con] = tyConDataCons ptup_tc
+ mk_result exprs = wrapFamInstBody ptup_tc tys
+ $ mkConApp ptup_con
+ $ map Type tys ++ exprs
+
+ to_comp expr (Keep _ _) = return expr
+
+ -- FIXME: this is bound to be wrong!
+ to_comp expr (Wrap ty)
+ = do
+ wrap_tc <- builtin wrapTyCon
+ (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
+ return $ wrapNewTypeBody pwrap_tc [ty] expr
+
+
+buildFromArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildFromArrPRepr vect_tc prepr_tc pdata_tc r
= do
arg_ty <- mkPDataType =<< mkPReprType el_ty
res_ty <- mkPDataType el_ty
scrut = mkCoerce co (Var arg)
- (args, mk) <- from_sum res_ty scrut (tyConDataCons vect_tc)
+ mk_result args = wrapFamInstBody pdata_tc var_tys
+ $ mkConApp pdata_con
+ $ map Type var_tys ++ args
+
+ (expr, _) <- fixV $ \ ~(_, args) ->
+ from_sum res_ty (mk_result args) scrut r
+
+ return $ Lam arg expr
+
+ -- (args, mk) <- from_sum res_ty scrut r
- let result = wrapFamInstBody pdata_tc var_tys
- . mkConApp pdata_dc
- $ map Type var_tys ++ args
+ -- let result = wrapFamInstBody pdata_tc var_tys
+ -- . mkConApp pdata_dc
+ -- $ map Type var_tys ++ args
- return $ Lam arg (mk result)
+ -- return $ Lam arg (mk result)
where
var_tys = mkTyVarTys $ tyConTyVars vect_tc
el_ty = mkTyConApp vect_tc var_tys
- [pdata_dc] = tyConDataCons pdata_tc
+ [pdata_con] = tyConDataCons pdata_tc
- from_sum res_ty expr [] = return ([], mk)
- where
- mk body = mkWildCase expr (exprType expr) res_ty [(DEFAULT, [], body)]
- from_sum res_ty expr [con] = from_prod res_ty expr con
- from_sum res_ty expr cons
+ from_sum _ res _ EmptySum = return (res, [])
+ from_sum res_ty res expr (UnarySum r) = from_con res_ty res expr r
+ from_sum res_ty res expr (Sum { repr_psum_tc = psum_tc
+ , repr_sel_ty = sel_ty
+ , repr_con_tys = tys
+ , repr_cons = cons })
= do
- (_, pdata_tc, sel_ty, arg_tys) <- reprSumTyCons vect_tc
sel <- newLocalVar (fsLit "sel") sel_ty
- vars <- newLocalVars (fsLit "xs") arg_tys
- rs <- zipWithM (from_prod res_ty) (map Var vars) cons
- let (prods, mks) = unzip rs
- [pdata_con] = tyConDataCons pdata_tc
- scrut = unwrapFamInstScrut pdata_tc arg_tys expr
-
- mk body = mkWildCase scrut (exprType scrut) res_ty
- [(DataAlt pdata_con, sel : vars, foldr ($) body mks)]
- return (Var sel : concat prods, mk)
-
-
- from_prod res_ty expr con
- | [] <- tys = return ([], id)
- | [_] <- tys = return ([expr], id)
- | otherwise
- = do
- prod_tc <- builtin (prodTyCon (length tys))
- (pdata_tc, _) <- pdataReprTyCon (mkTyConApp prod_tc tys)
- pdata_tys <- mapM mkPDataType tys
- vars <- newLocalVars (fsLit "ys") pdata_tys
- let [pdata_con] = tyConDataCons pdata_tc
- scrut = unwrapFamInstScrut pdata_tc tys expr
-
- mk body = mkWildCase scrut (exprType scrut) res_ty
- [(DataAlt pdata_con, vars, body)]
-
- return (map Var vars, mk)
+ ptys <- mapM mkPDataType tys
+ vars <- newLocalVars (fsLit "xs") ptys
+ (res', args) <- fold from_con res_ty res (map Var vars) cons
+ let scrut = unwrapFamInstScrut psum_tc tys expr
+ body = mkWildCase scrut (exprType scrut) res_ty
+ [(DataAlt psum_con, sel : vars, res')]
+ return (body, Var sel : args)
where
- tys = dataConRepArgTys con
+ [psum_con] = tyConDataCons psum_tc
+
+
+ from_con res_ty res expr (ConRepr _ r) = from_prod res_ty res expr r
-buildPRDict :: TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildPRDict vect_tc prepr_tc _
+ from_prod _ res _ EmptyProd = return (res, [])
+ from_prod res_ty res expr (UnaryProd r)
+ = from_comp res_ty res expr r
+ from_prod res_ty res expr (Prod { repr_ptup_tc = ptup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
+ = do
+ ptys <- mapM mkPDataType tys
+ vars <- newLocalVars (fsLit "ys") ptys
+ (res', args) <- fold from_comp res_ty res (map Var vars) comps
+ let scrut = unwrapFamInstScrut ptup_tc tys expr
+ body = mkWildCase scrut (exprType scrut) res_ty
+ [(DataAlt ptup_con, vars, res')]
+ return (body, args)
+ where
+ [ptup_con] = tyConDataCons ptup_tc
+
+ from_comp _ res expr (Keep _ _) = return (res, [expr])
+ from_comp _ res expr (Wrap ty)
+ = do
+ wrap_tc <- builtin wrapTyCon
+ (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
+ return (res, [unwrapNewTypeBody pwrap_tc [ty]
+ $ unwrapFamInstScrut pwrap_tc [ty] expr])
+
+ fold f res_ty res exprs rs = foldrM f' (res, []) (zip exprs rs)
+ where
+ f' (expr, r) (res, args) = do
+ (res', args') <- f res_ty res expr r
+ return (res', args' ++ args)
+
+buildPRDict :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildPRDict vect_tc prepr_tc _ r
= do
- dict <- sum_dict (tyConDataCons vect_tc)
+ dict <- sum_dict r
pr_co <- mkBuiltinCo prTyCon
let co = mkAppCoercion pr_co
. mkSymCoercion
ty_args = mkTyVarTys (tyConTyVars vect_tc)
Just arg_co = tyConFamilyCoercion_maybe prepr_tc
- sum_dict [] = prDFunOfTyCon =<< builtin voidTyCon
- sum_dict [con] = prod_dict con
- sum_dict cons = do
- dicts <- mapM prod_dict cons
- (sum_tc, _, _, sum_ty_args) <- reprSumTyCons vect_tc
- dfun <- prDFunOfTyCon sum_tc
- return $ dfun `mkTyApps` sum_ty_args `mkApps` dicts
-
- prod_dict con
- | [] <- tys = prDFunOfTyCon =<< builtin voidTyCon
- | [ty] <- tys = mkPR ty
- | otherwise = do
- dicts <- mapM mkPR tys
- prod_tc <- builtin (prodTyCon (length tys))
- dfun <- prDFunOfTyCon prod_tc
- return $ dfun `mkTyApps` tys `mkApps` dicts
- where
- tys = dataConRepArgTys con
+ 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
+ dicts <- mapM con_dict cons
+ dfun <- prDFunOfTyCon sum_tc
+ return $ dfun `mkTyApps` tys `mkApps` dicts
+
+ con_dict (ConRepr _ r) = prod_dict r
+
+ 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
+ dicts <- mapM comp_dict comps
+ dfun <- prDFunOfTyCon tup_tc
+ return $ dfun `mkTyApps` tys `mkApps` dicts
+
+ comp_dict (Keep _ pr) = return pr
+ comp_dict (Wrap ty) = wrapPR ty
+
-buildPDataTyCon :: TyCon -> TyCon -> VM TyCon
-buildPDataTyCon 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 mkPDataTyConOcc orig_name
- rhs <- buildPDataTyConRhs orig_name vect_tc repr_tc
+ rhs <- buildPDataTyConRhs orig_name vect_tc repr_tc repr
pdata <- builtin pdataTyCon
liftDs $ buildAlgTyCon name'
rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
-buildPDataTyConRhs :: Name -> TyCon -> TyCon -> VM AlgTyConRhs
-buildPDataTyConRhs orig_name vect_tc repr_tc
+buildPDataTyConRhs :: Name -> TyCon -> TyCon -> SumRepr -> VM AlgTyConRhs
+buildPDataTyConRhs orig_name vect_tc repr_tc repr
= do
- data_con <- buildPDataDataCon 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 }
-buildPDataDataCon :: Name -> TyCon -> TyCon -> VM DataCon
-buildPDataDataCon 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 mkPDataDataConOcc orig_name
- comp_tys <- components
+ comp_tys <- sum_tys repr
liftDs $ buildDataCon dc_name
False -- not infix
- (map (const NotMarkedStrict) comp_tys)
+ (map (const HsNoBang) comp_tys)
[] -- no field labels
tvs
[] -- no existentials
repr_tc
where
tvs = tyConTyVars vect_tc
- cons = tyConDataCons vect_tc
- arity = length cons
- components
- | arity > 1 = liftM2 (:) (builtin (selTy arity)) data_components
- | otherwise = data_components
+ 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)
- data_components = mapM mkPDataType
- . concat
- $ map dataConRepArgTys cons
+ con_tys (ConRepr _ r) = prod_tys r
-mkPADFun :: TyCon -> VM Var
-mkPADFun vect_tc
- = newExportedVar (mkPADFunOcc $ getOccName vect_tc) =<< paDFunType vect_tc
+ prod_tys EmptyProd = return []
+ prod_tys (UnaryProd r) = liftM singleton (comp_ty r)
+ prod_tys (Prod { repr_comps = comps }) = mapM comp_ty comps
-buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> Var
- -> VM [(Var, CoreExpr)]
-buildTyConBindings orig_tc vect_tc prepr_tc pdata_tc dfun
+ 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
vectDataConWorkers orig_tc vect_tc pdata_tc
- dict <- buildPADict vect_tc prepr_tc pdata_tc dfun
- binds <- takeHoisted
- return $ (dfun, dict) : binds
+ buildPADict vect_tc prepr_tc pdata_tc repr
vectDataConWorkers :: TyCon -> TyCon -> TyCon -> VM ()
vectDataConWorkers orig_tc vect_tc arr_tc
def_worker data_con arg_tys mk_body
= do
+ arity <- polyArity tyvars
body <- closedV
. inBind orig_worker
- . polyAbstract tyvars $ \abstract ->
- liftM (abstract . vectorised)
+ . polyAbstract tyvars $ \args ->
+ liftM (mkLams (tyvars ++ args) . vectorised)
$ buildClosures tyvars [] arg_tys res_ty mk_body
- vect_worker <- cloneId mkVectOcc orig_worker (exprType 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
orig_worker = dataConWorkId data_con
-buildPADict :: TyCon -> TyCon -> TyCon -> Var -> VM CoreExpr
-buildPADict vect_tc prepr_tc arr_tc _
- = polyAbstract tvs $ \abstract ->
+buildPADict :: TyCon -> TyCon -> TyCon -> SumRepr -> VM Var
+buildPADict vect_tc prepr_tc arr_tc repr
+ = polyAbstract tvs $ \args ->
do
- meth_binds <- mapM mk_method paMethods
- let meth_exprs = map (Var . fst) meth_binds
+ method_ids <- mapM (method args) paMethods
- 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_method (name, build)
- = localV
- $ do
- body <- build vect_tc prepr_tc arr_tc
- var <- newLocalVar name (exprType body)
- return (var, mkInlineMe body)
-
-paMethods :: [(FastString, TyCon -> TyCon -> TyCon -> VM CoreExpr)]
-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 _ [] = (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
+ 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
- can_convert = isNullUFM (refs `minusUFM` cs) && all convertable tcs
- must_convert = foldUFM (||) False (intersectUFM_C const cs refs)
+ dfun_ty = mkForAllTys tvs
+ $ mkFunTys (map varType args) (mkTyConApp pa_tc [inst_ty])
- convertable tc = isDataTyCon tc && all isVanillaDataCon (tyConDataCons tc)
+ raw_dfun <- newExportedVar dfun_name dfun_ty
+ let dfun = raw_dfun `setIdUnfolding` mkDFunUnfolding dfun_ty (map Var method_ids)
+ `setInlinePragma` dfunInlinePragma
--- | Compute mutually recursive groups of tycons in topological order
---
-tyConGroups :: [TyCon] -> [TyConGroup]
-tyConGroups tcs = map mk_grp (stronglyConnCompFromEdgedVertices edges)
+ hoistBinding dfun dict
+ return dfun
where
- edges = [((tc, ds), tc, uniqSetToList ds) | tc <- tcs
- , let ds = tyConsOfTyCon tc]
+ tvs = tyConTyVars vect_tc
+ arg_tys = mkTyVarTys tvs
+ inst_ty = mkTyConApp vect_tc arg_tys
- mk_grp (AcyclicSCC (tc, ds)) = ([tc], ds)
- mk_grp (CyclicSCC els) = (tcs, unionManyUniqSets dss)
- where
- (tcs, dss) = unzip els
+ dfun_name = mkPADFunOcc (getOccName vect_tc)
-tyConsOfTyCon :: TyCon -> UniqSet TyCon
-tyConsOfTyCon
- = tyConsOfTypes . concatMap dataConRepArgTys . tyConDataCons
+ 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
-tyConsOfType :: Type -> UniqSet TyCon
-tyConsOfType ty
- | Just ty' <- coreView ty = tyConsOfType ty'
-tyConsOfType (TyVarTy _) = emptyUniqSet
-tyConsOfType (TyConApp tc tys) = extend (tyConsOfTypes tys)
- where
- extend | isUnLiftedTyCon tc
- || isTupleTyCon tc = id
+ method_call args id = mkApps (Var id) (map Type arg_tys ++ map Var args)
- | otherwise = (`addOneToUniqSet` tc)
+ method_name name = mkVarOcc $ occNameString dfun_name ++ ('$' : name)
-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
-tyConsOfTypes :: [Type] -> UniqSet TyCon
-tyConsOfTypes = unionManyUniqSets . map tyConsOfType
+paMethods :: [(String, TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr)]
+paMethods = [("dictPRepr", buildPRDict),
+ ("toPRepr", buildToPRepr),
+ ("fromPRepr", buildFromPRepr),
+ ("toArrPRepr", buildToArrPRepr),
+ ("fromArrPRepr", buildFromArrPRepr)]
-- ----------------------------------------------------------------------------
-- Conversions
-fromVect :: Type -> CoreExpr -> VM CoreExpr
-fromVect ty expr | Just ty' <- coreView ty = fromVect ty' expr
+-- | Build an expression that calls the vectorised version of some
+-- function from a `Closure`.
+--
+-- For example
+-- @
+-- \(x :: Double) ->
+-- \(y :: Double) ->
+-- ($v_foo $: x) $: y
+-- @
+--
+-- We use the type of the original binding to work out how many
+-- outer lambdas to add.
+--
+fromVect
+ :: Type -- ^ The type of the original binding.
+ -> CoreExpr -- ^ Expression giving the closure to use, eg @$v_foo@.
+ -> VM CoreExpr
+
+-- Convert the type to the core view if it isn't already.
+fromVect ty expr
+ | Just ty' <- coreView ty
+ = fromVect ty' expr
+
+-- For each function constructor in the original type we add an outer
+-- lambda to bind the parameter variable, and an inner application of it.
fromVect (FunTy arg_ty res_ty) expr
= do
arg <- newLocalVar (fsLit "x") arg_ty
body <- fromVect res_ty
$ Var apply `mkTyApps` [varg_ty, vres_ty] `mkApps` [expr, varg]
return $ Lam arg body
+
+-- If the type isn't a function then it's time to call on the closure.
fromVect ty expr
= identityConv ty >> return expr
+
+-- TODO: What is this really doing?
toVect :: Type -> CoreExpr -> VM CoreExpr
toVect ty expr = identityConv ty >> return expr
+
+-- | Check that we have the vectorised versions of all the
+-- type constructors in this type.
identityConv :: Type -> VM ()
-identityConv ty | Just ty' <- coreView ty = identityConv ty'
+identityConv ty
+ | Just ty' <- coreView ty
+ = identityConv ty'
+
identityConv (TyConApp tycon tys)
- = do
- mapM_ identityConv tys
+ = do mapM_ identityConv tys
identityConvTyCon tycon
+
identityConv _ = noV
+
+-- | Check that we have the vectorised version of this type constructor.
identityConvTyCon :: TyCon -> VM ()
identityConvTyCon tc
| isBoxedTupleTyCon tc = return ()
| isUnLiftedTyCon tc = return ()
- | otherwise = do
- tc' <- maybeV (lookupTyCon tc)
- if tc == tc' then return () else noV
+ | otherwise
+ = do tc' <- maybeV (lookupTyCon tc)
+ if tc == tc' then return () else noV
+
projects / ghc-hetmet.git / blobdiff