1 module VectType ( vectTyCon, vectType, vectTypeEnv,
2 PAInstance, buildPADict )
5 #include "HsVersions.h"
11 import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
20 import FamInstEnv ( FamInst, mkLocalFamInst )
21 import InstEnv ( Instance, mkLocalInstance, instanceDFunId )
24 import BasicTypes ( StrictnessMark(..), OverlapFlag(..), boolToRecFlag )
26 import Id ( mkWildId )
27 import Name ( Name, getOccName )
29 import TysWiredIn ( unitTy, unitTyCon, intTy, intDataCon, unitDataConId )
30 import TysPrim ( intPrimTy )
35 import Digraph ( SCC(..), stronglyConnComp )
39 import Control.Monad ( liftM, liftM2, zipWithM, zipWithM_, mapAndUnzipM )
40 import Data.List ( inits, tails, zipWith4, zipWith5 )
42 -- ----------------------------------------------------------------------------
45 vectTyCon :: TyCon -> VM TyCon
47 | isFunTyCon tc = builtin closureTyCon
48 | isBoxedTupleTyCon tc = return tc
49 | isUnLiftedTyCon tc = return tc
53 Just tc' -> return tc'
55 -- FIXME: just for now
56 Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
58 vectType :: Type -> VM Type
59 vectType ty | Just ty' <- coreView ty = vectType ty'
60 vectType (TyVarTy tv) = return $ TyVarTy tv
61 vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
62 vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
63 vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
64 (mapM vectType [ty1,ty2])
65 vectType ty@(ForAllTy _ _)
67 mdicts <- mapM paDictArgType tyvars
68 mono_ty' <- vectType mono_ty
69 return $ tyvars `mkForAllTys` ([dict | Just dict <- mdicts] `mkFunTys` mono_ty')
71 (tyvars, mono_ty) = splitForAllTys ty
73 vectType ty = pprPanic "vectType:" (ppr ty)
75 -- ----------------------------------------------------------------------------
78 type TyConGroup = ([TyCon], UniqSet TyCon)
80 data PAInstance = PAInstance {
82 , painstOrigTyCon :: TyCon
83 , painstVectTyCon :: TyCon
84 , painstArrTyCon :: TyCon
87 vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [(Var, CoreExpr)])
90 cs <- readGEnv $ mk_map . global_tycons
91 let (conv_tcs, keep_tcs) = classifyTyCons cs groups
92 keep_dcs = concatMap tyConDataCons keep_tcs
93 zipWithM_ defTyCon keep_tcs keep_tcs
94 zipWithM_ defDataCon keep_dcs keep_dcs
95 new_tcs <- vectTyConDecls conv_tcs
97 let orig_tcs = keep_tcs ++ conv_tcs
98 vect_tcs = keep_tcs ++ new_tcs
100 repr_tcs <- zipWithM buildPReprTyCon orig_tcs vect_tcs
101 parr_tcs <- zipWithM buildPArrayTyCon orig_tcs vect_tcs
102 dfuns <- mapM mkPADFun vect_tcs
103 defTyConPAs (zip vect_tcs dfuns)
104 binds <- sequence (zipWith5 buildTyConBindings orig_tcs
110 let all_new_tcs = new_tcs ++ repr_tcs ++ parr_tcs
112 let new_env = extendTypeEnvList env
113 (map ATyCon all_new_tcs
114 ++ [ADataCon dc | tc <- all_new_tcs
115 , dc <- tyConDataCons tc])
117 return (new_env, map mkLocalFamInst (repr_tcs ++ parr_tcs), concat binds)
119 tycons = typeEnvTyCons env
120 groups = tyConGroups tycons
122 mk_map env = listToUFM_Directly [(u, getUnique n /= u) | (u,n) <- nameEnvUniqueElts env]
124 keep_tc tc = let dcs = tyConDataCons tc
126 defTyCon tc tc >> zipWithM_ defDataCon dcs dcs
129 vectTyConDecls :: [TyCon] -> VM [TyCon]
130 vectTyConDecls tcs = fixV $ \tcs' ->
132 mapM_ (uncurry defTyCon) (lazy_zip tcs tcs')
133 mapM vectTyConDecl tcs
136 lazy_zip (x:xs) ~(y:ys) = (x,y) : lazy_zip xs ys
138 vectTyConDecl :: TyCon -> VM TyCon
141 name' <- cloneName mkVectTyConOcc name
142 rhs' <- vectAlgTyConRhs (algTyConRhs tc)
144 liftDs $ buildAlgTyCon name'
146 [] -- no stupid theta
148 rec_flag -- FIXME: is this ok?
149 False -- FIXME: no generics
150 False -- not GADT syntax
151 Nothing -- not a family instance
154 tyvars = tyConTyVars tc
155 rec_flag = boolToRecFlag (isRecursiveTyCon tc)
157 vectAlgTyConRhs :: AlgTyConRhs -> VM AlgTyConRhs
158 vectAlgTyConRhs (DataTyCon { data_cons = data_cons
162 data_cons' <- mapM vectDataCon data_cons
163 zipWithM_ defDataCon data_cons data_cons'
164 return $ DataTyCon { data_cons = data_cons'
168 vectDataCon :: DataCon -> VM DataCon
170 | not . null $ dataConExTyVars dc = pprPanic "vectDataCon: existentials" (ppr dc)
171 | not . null $ dataConEqSpec dc = pprPanic "vectDataCon: eq spec" (ppr dc)
174 name' <- cloneName mkVectDataConOcc name
175 tycon' <- vectTyCon tycon
176 arg_tys <- mapM vectType rep_arg_tys
178 liftDs $ buildDataCon name'
180 (map (const NotMarkedStrict) arg_tys)
181 [] -- no labelled fields
183 [] -- no existential tvs for now
184 [] -- no eq spec for now
189 name = dataConName dc
190 univ_tvs = dataConUnivTyVars dc
191 rep_arg_tys = dataConRepArgTys dc
192 tycon = dataConTyCon dc
194 mk_fam_inst :: TyCon -> TyCon -> (TyCon, [Type])
195 mk_fam_inst fam_tc arg_tc
196 = (fam_tc, [mkTyConApp arg_tc . mkTyVarTys $ tyConTyVars arg_tc])
198 buildPReprTyCon :: TyCon -> TyCon -> VM TyCon
199 buildPReprTyCon orig_tc vect_tc
201 name <- cloneName mkPReprTyConOcc (tyConName orig_tc)
202 rhs_ty <- buildPReprType vect_tc
203 prepr_tc <- builtin preprTyCon
204 liftDs $ buildSynTyCon name
206 (SynonymTyCon rhs_ty)
207 (Just $ mk_fam_inst prepr_tc vect_tc)
209 tyvars = tyConTyVars vect_tc
212 data Repr = ProdRepr {
213 prod_components :: [Type]
214 , prod_tycon :: TyCon
215 , prod_data_con :: DataCon
216 , prod_arr_tycon :: TyCon
217 , prod_arr_data_con :: DataCon
221 sum_components :: [Repr]
223 , sum_arr_tycon :: TyCon
224 , sum_arr_data_con :: DataCon
231 , void_bottom :: CoreExpr
237 tycon <- builtin voidTyCon
238 var <- builtin voidVar
241 , void_bottom = Var var
244 unboxedProductRepr :: [Type] -> VM Repr
245 unboxedProductRepr [] = voidRepr
246 unboxedProductRepr [ty] = return $ IdRepr ty
247 unboxedProductRepr tys = boxedProductRepr tys
249 boxedProductRepr :: [Type] -> VM Repr
252 tycon <- builtin (prodTyCon arity)
253 let [data_con] = tyConDataCons tycon
255 (arr_tycon, _) <- parrayReprTyCon $ mkTyConApp tycon tys
256 let [arr_data_con] = tyConDataCons arr_tycon
259 prod_components = tys
261 , prod_data_con = data_con
262 , prod_arr_tycon = arr_tycon
263 , prod_arr_data_con = arr_data_con
268 sumRepr :: [Repr] -> VM Repr
269 sumRepr [] = voidRepr
270 sumRepr [repr] = boxRepr repr
273 tycon <- builtin (sumTyCon arity)
274 (arr_tycon, _) <- parrayReprTyCon
278 let [arr_data_con] = tyConDataCons arr_tycon
281 sum_components = reprs
283 , sum_arr_tycon = arr_tycon
284 , sum_arr_data_con = arr_data_con
289 boxRepr :: Repr -> VM Repr
290 boxRepr (VoidRepr {}) = boxedProductRepr []
291 boxRepr (IdRepr ty) = boxedProductRepr [ty]
292 boxRepr repr = return repr
294 reprType :: Repr -> Type
295 reprType (ProdRepr { prod_tycon = tycon, prod_components = tys })
296 = mkTyConApp tycon tys
297 reprType (SumRepr { sum_tycon = tycon, sum_components = reprs })
298 = mkTyConApp tycon (map reprType reprs)
299 reprType (IdRepr ty) = ty
300 reprType (VoidRepr { void_tycon = tycon }) = mkTyConApp tycon []
302 arrReprType :: Repr -> VM Type
303 arrReprType = mkPArrayType . reprType
305 arrShapeTys :: Repr -> VM [Type]
306 arrShapeTys (SumRepr {})
308 int_arr <- builtin parrayIntPrimTyCon
309 return [intPrimTy, mkTyConApp int_arr [], mkTyConApp int_arr []]
310 arrShapeTys (ProdRepr {}) = return [intPrimTy]
311 arrShapeTys (IdRepr _) = return []
312 arrShapeTys (VoidRepr {}) = return [intPrimTy]
314 arrShapeVars :: Repr -> VM [Var]
315 arrShapeVars repr = mapM (newLocalVar FSLIT("sh")) =<< arrShapeTys repr
317 replicateShape :: Repr -> CoreExpr -> CoreExpr -> VM [CoreExpr]
318 replicateShape (ProdRepr {}) len _ = return [len]
319 replicateShape (SumRepr {}) len tag
321 rep <- builtin replicatePAIntPrimVar
322 up <- builtin upToPAIntPrimVar
323 return [len, Var rep `mkApps` [len, tag], Var up `App` len]
324 replicateShape (IdRepr _) _ _ = return []
325 replicateShape (VoidRepr {}) len _ = return [len]
327 arrReprElemTys :: Repr -> VM [[Type]]
328 arrReprElemTys (SumRepr { sum_components = prods })
329 = mapM arrProdElemTys prods
330 arrReprElemTys prod@(ProdRepr {})
332 tys <- arrProdElemTys prod
334 arrReprElemTys (IdRepr ty) = return [[ty]]
335 arrReprElemTys (VoidRepr { void_tycon = tycon })
336 = return [[mkTyConApp tycon []]]
338 arrProdElemTys (ProdRepr { prod_components = [] })
340 void <- builtin voidTyCon
341 return [mkTyConApp void []]
342 arrProdElemTys (ProdRepr { prod_components = tys })
344 arrProdElemTys (IdRepr ty) = return [ty]
345 arrProdElemTys (VoidRepr { void_tycon = tycon })
346 = return [mkTyConApp tycon []]
348 arrReprTys :: Repr -> VM [[Type]]
349 arrReprTys repr = mapM (mapM mkPArrayType) =<< arrReprElemTys repr
351 arrReprVars :: Repr -> VM [[Var]]
353 = mapM (mapM (newLocalVar FSLIT("rs"))) =<< arrReprTys repr
355 mkRepr :: TyCon -> VM Repr
357 = sumRepr =<< mapM unboxedProductRepr rep_tys
359 rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
361 buildPReprType :: TyCon -> VM Type
362 buildPReprType = liftM reprType . mkRepr
364 buildToPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
365 buildToPRepr repr vect_tc prepr_tc _
367 arg <- newLocalVar FSLIT("x") arg_ty
368 result <- to_repr repr (Var arg)
371 . wrapFamInstBody prepr_tc var_tys
374 var_tys = mkTyVarTys $ tyConTyVars vect_tc
375 arg_ty = mkTyConApp vect_tc var_tys
376 res_ty = reprType repr
378 cons = tyConDataCons vect_tc
381 to_repr (SumRepr { sum_components = prods
382 , sum_tycon = tycon })
385 (vars, bodies) <- mapAndUnzipM prod_alt prods
386 return . Case expr (mkWildId (exprType expr)) res_ty
387 $ zipWith4 mk_alt cons vars (tyConDataCons tycon) bodies
389 mk_alt con vars sum_con body
390 = (DataAlt con, vars, mkConApp sum_con (ty_args ++ [body]))
392 ty_args = map (Type . reprType) prods
396 (vars, body) <- prod_alt prod
397 return $ Case expr (mkWildId (exprType expr)) res_ty
398 [(DataAlt con, vars, body)]
400 prod_alt (ProdRepr { prod_components = tys
401 , prod_data_con = data_con })
403 vars <- mapM (newLocalVar FSLIT("r")) tys
404 return (vars, mkConApp data_con (map Type tys ++ map Var vars))
408 var <- newLocalVar FSLIT("y") ty
409 return ([var], Var var)
411 prod_alt (VoidRepr { void_bottom = bottom })
412 = return ([], bottom)
415 buildFromPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
416 buildFromPRepr repr vect_tc prepr_tc _
418 arg_ty <- mkPReprType res_ty
419 arg <- newLocalVar FSLIT("x") arg_ty
423 $ unwrapFamInstScrut prepr_tc var_tys (Var arg)
425 var_tys = mkTyVarTys $ tyConTyVars vect_tc
426 res_ty = mkTyConApp vect_tc var_tys
428 cons = map (`mkConApp` map Type var_tys) (tyConDataCons vect_tc)
431 from_repr repr@(SumRepr { sum_components = prods
432 , sum_tycon = tycon })
435 vars <- mapM (newLocalVar FSLIT("x")) (map reprType prods)
436 bodies <- sequence . zipWith3 from_prod prods cons
438 return . Case expr (mkWildId (reprType repr)) res_ty
439 $ zipWith3 sum_alt (tyConDataCons tycon) vars bodies
441 sum_alt data_con var body = (DataAlt data_con, [var], body)
443 from_repr repr expr = from_prod repr con expr
445 from_prod prod@(ProdRepr { prod_components = tys
446 , prod_data_con = data_con })
450 vars <- mapM (newLocalVar FSLIT("y")) tys
451 return $ Case expr (mkWildId (reprType prod)) res_ty
452 [(DataAlt data_con, vars, con `mkVarApps` vars)]
454 from_prod (IdRepr _) con expr
455 = return $ con `App` expr
457 from_prod (VoidRepr {}) con expr
460 buildToArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
461 buildToArrPRepr repr vect_tc prepr_tc arr_tc
463 arg_ty <- mkPArrayType el_ty
464 arg <- newLocalVar FSLIT("xs") arg_ty
466 res_ty <- mkPArrayType (reprType repr)
468 shape_vars <- arrShapeVars repr
469 repr_vars <- arrReprVars repr
471 parray_co <- mkBuiltinCo parrayTyCon
473 let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
474 co = mkAppCoercion parray_co
476 $ mkTyConApp repr_co var_tys
478 scrut = unwrapFamInstScrut arr_tc var_tys (Var arg)
480 result <- to_repr shape_vars repr_vars repr
484 $ Case scrut (mkWildId (mkTyConApp arr_tc var_tys)) res_ty
485 [(DataAlt arr_dc, shape_vars ++ concat repr_vars, result)]
487 var_tys = mkTyVarTys $ tyConTyVars vect_tc
488 el_ty = mkTyConApp vect_tc var_tys
490 [arr_dc] = tyConDataCons arr_tc
492 to_repr shape_vars@(len_var : _)
494 (SumRepr { sum_components = prods
495 , sum_arr_tycon = tycon
496 , sum_arr_data_con = data_con })
498 exprs <- zipWithM to_prod repr_vars prods
500 return . wrapFamInstBody tycon tys
502 $ map Type tys ++ map Var shape_vars ++ exprs
504 tys = map reprType prods
508 (ProdRepr { prod_components = tys
509 , prod_arr_tycon = tycon
510 , prod_arr_data_con = data_con })
511 = return . wrapFamInstBody tycon tys
513 $ map Type tys ++ map Var (len_var : repr_vars)
515 to_prod repr_vars@(r : _)
516 (ProdRepr { prod_components = tys
517 , prod_arr_tycon = tycon
518 , prod_arr_data_con = data_con })
520 len <- lengthPA (Var r)
521 return . wrapFamInstBody tycon tys
523 $ map Type tys ++ len : map Var repr_vars
525 to_prod [var] (IdRepr ty) = return (Var var)
526 to_prod [var] (VoidRepr {}) = return (Var var)
529 buildFromArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
530 buildFromArrPRepr repr vect_tc prepr_tc arr_tc
532 arg_ty <- mkPArrayType =<< mkPReprType el_ty
533 arg <- newLocalVar FSLIT("xs") arg_ty
535 res_ty <- mkPArrayType el_ty
537 shape_vars <- arrShapeVars repr
538 repr_vars <- arrReprVars repr
540 parray_co <- mkBuiltinCo parrayTyCon
542 let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
543 co = mkAppCoercion parray_co
544 $ mkTyConApp repr_co var_tys
546 scrut = mkCoerce co (Var arg)
548 result = wrapFamInstBody arr_tc var_tys
550 $ map Type var_tys ++ map Var (shape_vars ++ concat repr_vars)
553 (from_repr repr scrut shape_vars repr_vars res_ty result)
555 var_tys = mkTyVarTys $ tyConTyVars vect_tc
556 el_ty = mkTyConApp vect_tc var_tys
558 [arr_dc] = tyConDataCons arr_tc
560 from_repr (SumRepr { sum_components = prods
561 , sum_arr_tycon = tycon
562 , sum_arr_data_con = data_con })
569 vars <- mapM (newLocalVar FSLIT("xs")) =<< mapM arrReprType prods
570 result <- go prods repr_vars vars body
572 let scrut = unwrapFamInstScrut tycon ty_args expr
573 return . Case scrut (mkWildId scrut_ty) res_ty
574 $ [(DataAlt data_con, shape_vars ++ vars, result)]
576 ty_args = map reprType prods
577 scrut_ty = mkTyConApp tycon ty_args
579 go [] [] [] body = return body
580 go (prod : prods) (repr_vars : rss) (var : vars) body
582 shape_vars <- mapM (newLocalVar FSLIT("s")) =<< arrShapeTys prod
584 from_prod prod (Var var) shape_vars repr_vars res_ty
585 =<< go prods rss vars body
587 from_repr repr expr shape_vars [repr_vars] res_ty body
588 = from_prod repr expr shape_vars repr_vars res_ty body
590 from_prod prod@(ProdRepr { prod_components = tys
591 , prod_arr_tycon = tycon
592 , prod_arr_data_con = data_con })
599 let scrut = unwrapFamInstScrut tycon tys expr
600 scrut_ty = mkTyConApp tycon tys
601 ty <- arrReprType prod
603 return $ Case scrut (mkWildId scrut_ty) res_ty
604 [(DataAlt data_con, shape_vars ++ repr_vars, body)]
606 from_prod (IdRepr ty)
612 = return $ Let (NonRec repr_var expr) body
614 from_prod (VoidRepr {})
620 = return $ Let (NonRec repr_var expr) body
622 buildPRDictRepr :: Repr -> VM CoreExpr
623 buildPRDictRepr (VoidRepr { void_tycon = tycon })
624 = prDFunOfTyCon tycon
625 buildPRDictRepr (IdRepr ty) = mkPR ty
626 buildPRDictRepr (ProdRepr {
627 prod_components = tys
632 dfun <- prDFunOfTyCon tycon
633 return $ dfun `mkTyApps` tys `mkApps` prs
635 buildPRDictRepr (SumRepr {
636 sum_components = prods
637 , sum_tycon = tycon })
639 prs <- mapM buildPRDictRepr prods
640 dfun <- prDFunOfTyCon tycon
641 return $ dfun `mkTyApps` map reprType prods `mkApps` prs
643 buildPRDict :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
644 buildPRDict repr vect_tc prepr_tc _
646 dict <- buildPRDictRepr repr
648 pr_co <- mkBuiltinCo prTyCon
649 let co = mkAppCoercion pr_co
651 $ mkTyConApp arg_co var_tys
653 return $ mkCoerce co dict
655 var_tys = mkTyVarTys $ tyConTyVars vect_tc
657 Just arg_co = tyConFamilyCoercion_maybe prepr_tc
659 buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
660 buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
662 name' <- cloneName mkPArrayTyConOcc orig_name
663 rhs <- buildPArrayTyConRhs orig_name vect_tc repr_tc
664 parray <- builtin parrayTyCon
666 liftDs $ buildAlgTyCon name'
668 [] -- no stupid theta
670 rec_flag -- FIXME: is this ok?
671 False -- FIXME: no generics
672 False -- not GADT syntax
673 (Just $ mk_fam_inst parray vect_tc)
675 orig_name = tyConName orig_tc
676 tyvars = tyConTyVars vect_tc
677 rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
680 buildPArrayTyConRhs :: Name -> TyCon -> TyCon -> VM AlgTyConRhs
681 buildPArrayTyConRhs orig_name vect_tc repr_tc
683 data_con <- buildPArrayDataCon orig_name vect_tc repr_tc
684 return $ DataTyCon { data_cons = [data_con], is_enum = False }
686 buildPArrayDataCon :: Name -> TyCon -> TyCon -> VM DataCon
687 buildPArrayDataCon orig_name vect_tc repr_tc
689 dc_name <- cloneName mkPArrayDataConOcc orig_name
690 repr <- mkRepr vect_tc
692 shape_tys <- arrShapeTys repr
693 repr_tys <- arrReprTys repr
695 let tys = shape_tys ++ concat repr_tys
697 liftDs $ buildDataCon dc_name
699 (map (const NotMarkedStrict) tys)
700 [] -- no field labels
701 (tyConTyVars vect_tc)
702 [] -- no existentials
708 mkPADFun :: TyCon -> VM Var
710 = newExportedVar (mkPADFunOcc $ getOccName vect_tc) =<< paDFunType vect_tc
712 buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> Var
713 -> VM [(Var, CoreExpr)]
714 buildTyConBindings orig_tc vect_tc prepr_tc arr_tc dfun
716 repr <- mkRepr vect_tc
717 vectDataConWorkers repr orig_tc vect_tc arr_tc
718 dict <- buildPADict repr vect_tc prepr_tc arr_tc dfun
720 return $ (dfun, dict) : binds
722 orig_dcs = tyConDataCons orig_tc
723 vect_dcs = tyConDataCons vect_tc
724 [arr_dc] = tyConDataCons arr_tc
726 repr_tys = map dataConRepArgTys vect_dcs
728 vectDataConWorkers :: Repr -> TyCon -> TyCon -> TyCon
730 vectDataConWorkers repr orig_tc vect_tc arr_tc
732 arr_tys <- arrReprElemTys repr
734 . zipWith3 def_worker (tyConDataCons orig_tc) rep_tys
735 $ zipWith4 mk_data_con (tyConDataCons vect_tc)
738 (tail $ tails arr_tys)
739 mapM_ (uncurry hoistBinding) bs
741 tyvars = tyConTyVars vect_tc
742 var_tys = mkTyVarTys tyvars
743 ty_args = map Type var_tys
745 res_ty = mkTyConApp vect_tc var_tys
747 rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
749 [arr_dc] = tyConDataCons arr_tc
751 mk_data_con con tys pre post
752 = liftM2 (,) (vect_data_con con)
753 (lift_data_con tys (concat pre)
757 vect_data_con con = return $ mkConApp con ty_args
758 lift_data_con tys pre_tys post_tys tag
760 len <- builtin liftingContext
761 args <- mapM (newLocalVar FSLIT("xs"))
762 =<< mapM mkPArrayType tys
764 shape <- replicateShape repr (Var len) tag
765 repr <- mk_arr_repr (Var len) (map Var args)
767 pre <- mapM emptyPA pre_tys
768 post <- mapM emptyPA post_tys
770 return . mkLams (len : args)
771 . wrapFamInstBody arr_tc var_tys
773 $ ty_args ++ shape ++ pre ++ repr ++ post
777 units <- replicatePA len (Var unitDataConId)
780 mk_arr_repr len arrs = return arrs
782 def_worker data_con arg_tys mk_body
786 . polyAbstract tyvars $ \abstract ->
787 liftM (abstract . vectorised)
788 $ buildClosures tyvars [] arg_tys res_ty mk_body
790 vect_worker <- cloneId mkVectOcc orig_worker (exprType body)
791 defGlobalVar orig_worker vect_worker
792 return (vect_worker, body)
794 orig_worker = dataConWorkId data_con
796 buildPADict :: Repr -> TyCon -> TyCon -> TyCon -> Var -> VM CoreExpr
797 buildPADict repr vect_tc prepr_tc arr_tc dfun
798 = polyAbstract tvs $ \abstract ->
800 meth_binds <- mapM (mk_method repr) paMethods
801 let meth_exprs = map (Var . fst) meth_binds
803 pa_dc <- builtin paDataCon
804 let dict = mkConApp pa_dc (Type (mkTyConApp vect_tc arg_tys) : meth_exprs)
805 body = Let (Rec meth_binds) dict
806 return . mkInlineMe $ abstract body
808 tvs = tyConTyVars arr_tc
809 arg_tys = mkTyVarTys tvs
811 mk_method repr (name, build)
814 body <- build repr vect_tc prepr_tc arr_tc
815 var <- newLocalVar name (exprType body)
816 return (var, mkInlineMe body)
818 paMethods = [(FSLIT("toPRepr"), buildToPRepr),
819 (FSLIT("fromPRepr"), buildFromPRepr),
820 (FSLIT("toArrPRepr"), buildToArrPRepr),
821 (FSLIT("fromArrPRepr"), buildFromArrPRepr),
822 (FSLIT("dictPRepr"), buildPRDict)]
824 -- | Split the given tycons into two sets depending on whether they have to be
825 -- converted (first list) or not (second list). The first argument contains
826 -- information about the conversion status of external tycons:
828 -- * tycons which have converted versions are mapped to True
829 -- * tycons which are not changed by vectorisation are mapped to False
830 -- * tycons which can't be converted are not elements of the map
832 classifyTyCons :: UniqFM Bool -> [TyConGroup] -> ([TyCon], [TyCon])
833 classifyTyCons = classify [] []
835 classify conv keep cs [] = (conv, keep)
836 classify conv keep cs ((tcs, ds) : rs)
837 | can_convert && must_convert
838 = classify (tcs ++ conv) keep (cs `addListToUFM` [(tc,True) | tc <- tcs]) rs
840 = classify conv (tcs ++ keep) (cs `addListToUFM` [(tc,False) | tc <- tcs]) rs
842 = classify conv keep cs rs
844 refs = ds `delListFromUniqSet` tcs
846 can_convert = isNullUFM (refs `minusUFM` cs) && all convertable tcs
847 must_convert = foldUFM (||) False (intersectUFM_C const cs refs)
849 convertable tc = isDataTyCon tc && all isVanillaDataCon (tyConDataCons tc)
851 -- | Compute mutually recursive groups of tycons in topological order
853 tyConGroups :: [TyCon] -> [TyConGroup]
854 tyConGroups tcs = map mk_grp (stronglyConnComp edges)
856 edges = [((tc, ds), tc, uniqSetToList ds) | tc <- tcs
857 , let ds = tyConsOfTyCon tc]
859 mk_grp (AcyclicSCC (tc, ds)) = ([tc], ds)
860 mk_grp (CyclicSCC els) = (tcs, unionManyUniqSets dss)
862 (tcs, dss) = unzip els
864 tyConsOfTyCon :: TyCon -> UniqSet TyCon
866 = tyConsOfTypes . concatMap dataConRepArgTys . tyConDataCons
868 tyConsOfType :: Type -> UniqSet TyCon
870 | Just ty' <- coreView ty = tyConsOfType ty'
871 tyConsOfType (TyVarTy v) = emptyUniqSet
872 tyConsOfType (TyConApp tc tys) = extend (tyConsOfTypes tys)
874 extend | isUnLiftedTyCon tc
875 || isTupleTyCon tc = id
877 | otherwise = (`addOneToUniqSet` tc)
879 tyConsOfType (AppTy a b) = tyConsOfType a `unionUniqSets` tyConsOfType b
880 tyConsOfType (FunTy a b) = (tyConsOfType a `unionUniqSets` tyConsOfType b)
881 `addOneToUniqSet` funTyCon
882 tyConsOfType (ForAllTy _ ty) = tyConsOfType ty
883 tyConsOfType other = pprPanic "ClosureConv.tyConsOfType" $ ppr other
885 tyConsOfTypes :: [Type] -> UniqSet TyCon
886 tyConsOfTypes = unionManyUniqSets . map tyConsOfType