2 module VectType ( vectTyCon, vectAndLiftType, vectType, vectTypeEnv,
3 mkRepr, arrShapeTys, arrShapeVars, arrSelector,
12 import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
21 import FamInstEnv ( FamInst, mkLocalFamInst )
24 import BasicTypes ( StrictnessMark(..), boolToRecFlag )
25 import Var ( Var, TyVar )
26 import Id ( mkWildId )
27 import Name ( Name, getOccName )
30 import TysPrim ( intPrimTy )
36 import Digraph ( SCC(..), stronglyConnCompFromEdgedVertices )
41 import Control.Monad ( liftM, liftM2, zipWithM, zipWithM_, mapAndUnzipM )
42 import Data.List ( inits, tails, zipWith4, zipWith5 )
44 -- ----------------------------------------------------------------------------
47 vectTyCon :: TyCon -> VM TyCon
49 | isFunTyCon tc = builtin closureTyCon
50 | isBoxedTupleTyCon tc = return tc
51 | isUnLiftedTyCon tc = return tc
55 Just tc' -> return tc'
57 -- FIXME: just for now
58 Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
60 vectAndLiftType :: Type -> VM (Type, Type)
61 vectAndLiftType ty | Just ty' <- coreView ty = vectAndLiftType ty'
64 mdicts <- mapM paDictArgType tyvars
65 let dicts = [dict | Just dict <- mdicts]
66 vmono_ty <- vectType mono_ty
67 lmono_ty <- mkPArrayType vmono_ty
68 return (abstractType tyvars dicts vmono_ty,
69 abstractType tyvars dicts lmono_ty)
71 (tyvars, mono_ty) = splitForAllTys ty
74 vectType :: Type -> VM Type
75 vectType ty | Just ty' <- coreView ty = vectType ty'
76 vectType (TyVarTy tv) = return $ TyVarTy tv
77 vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
78 vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
79 vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
80 (mapM vectAndBoxType [ty1,ty2])
81 vectType ty@(ForAllTy _ _)
83 mdicts <- mapM paDictArgType tyvars
84 mono_ty' <- vectType mono_ty
85 return $ abstractType tyvars [dict | Just dict <- mdicts] mono_ty'
87 (tyvars, mono_ty) = splitForAllTys ty
89 vectType ty = pprPanic "vectType:" (ppr ty)
91 vectAndBoxType :: Type -> VM Type
92 vectAndBoxType ty = vectType ty >>= boxType
94 abstractType :: [TyVar] -> [Type] -> Type -> Type
95 abstractType tyvars dicts = mkForAllTys tyvars . mkFunTys dicts
97 -- ----------------------------------------------------------------------------
100 boxType :: Type -> VM Type
102 | Just (tycon, []) <- splitTyConApp_maybe ty
103 , isUnLiftedTyCon tycon
105 r <- lookupBoxedTyCon tycon
107 Just tycon' -> return $ mkTyConApp tycon' []
109 boxType ty = return ty
111 -- ----------------------------------------------------------------------------
114 type TyConGroup = ([TyCon], UniqSet TyCon)
116 vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [(Var, CoreExpr)])
119 cs <- readGEnv $ mk_map . global_tycons
120 let (conv_tcs, keep_tcs) = classifyTyCons cs groups
121 keep_dcs = concatMap tyConDataCons keep_tcs
122 zipWithM_ defTyCon keep_tcs keep_tcs
123 zipWithM_ defDataCon keep_dcs keep_dcs
124 new_tcs <- vectTyConDecls conv_tcs
126 let orig_tcs = keep_tcs ++ conv_tcs
127 vect_tcs = keep_tcs ++ new_tcs
129 repr_tcs <- zipWithM buildPReprTyCon orig_tcs vect_tcs
130 parr_tcs <- zipWithM buildPArrayTyCon orig_tcs vect_tcs
131 dfuns <- mapM mkPADFun vect_tcs
132 defTyConPAs (zip vect_tcs dfuns)
133 binds <- sequence (zipWith5 buildTyConBindings orig_tcs
139 let all_new_tcs = new_tcs ++ repr_tcs ++ parr_tcs
141 let new_env = extendTypeEnvList env
142 (map ATyCon all_new_tcs
143 ++ [ADataCon dc | tc <- all_new_tcs
144 , dc <- tyConDataCons tc])
146 return (new_env, map mkLocalFamInst (repr_tcs ++ parr_tcs), concat binds)
148 tycons = typeEnvTyCons env
149 groups = tyConGroups tycons
151 mk_map env = listToUFM_Directly [(u, getUnique n /= u) | (u,n) <- nameEnvUniqueElts env]
154 vectTyConDecls :: [TyCon] -> VM [TyCon]
155 vectTyConDecls tcs = fixV $ \tcs' ->
157 mapM_ (uncurry defTyCon) (zipLazy tcs tcs')
158 mapM vectTyConDecl tcs
160 vectTyConDecl :: TyCon -> VM TyCon
163 name' <- cloneName mkVectTyConOcc name
164 rhs' <- vectAlgTyConRhs (algTyConRhs tc)
166 liftDs $ buildAlgTyCon name'
168 [] -- no stupid theta
170 rec_flag -- FIXME: is this ok?
171 False -- FIXME: no generics
172 False -- not GADT syntax
173 Nothing -- not a family instance
176 tyvars = tyConTyVars tc
177 rec_flag = boolToRecFlag (isRecursiveTyCon tc)
179 vectAlgTyConRhs :: AlgTyConRhs -> VM AlgTyConRhs
180 vectAlgTyConRhs (DataTyCon { data_cons = data_cons
184 data_cons' <- mapM vectDataCon data_cons
185 zipWithM_ defDataCon data_cons data_cons'
186 return $ DataTyCon { data_cons = data_cons'
189 vectAlgTyConRhs _ = panic "vectAlgTyConRhs"
191 vectDataCon :: DataCon -> VM DataCon
193 | not . null $ dataConExTyVars dc = pprPanic "vectDataCon: existentials" (ppr dc)
194 | not . null $ dataConEqSpec dc = pprPanic "vectDataCon: eq spec" (ppr dc)
197 name' <- cloneName mkVectDataConOcc name
198 tycon' <- vectTyCon tycon
199 arg_tys <- mapM vectType rep_arg_tys
201 liftDs $ buildDataCon name'
203 (map (const NotMarkedStrict) arg_tys)
204 [] -- no labelled fields
206 [] -- no existential tvs for now
207 [] -- no eq spec for now
212 name = dataConName dc
213 univ_tvs = dataConUnivTyVars dc
214 rep_arg_tys = dataConRepArgTys dc
215 tycon = dataConTyCon dc
217 mk_fam_inst :: TyCon -> TyCon -> (TyCon, [Type])
218 mk_fam_inst fam_tc arg_tc
219 = (fam_tc, [mkTyConApp arg_tc . mkTyVarTys $ tyConTyVars arg_tc])
221 buildPReprTyCon :: TyCon -> TyCon -> VM TyCon
222 buildPReprTyCon orig_tc vect_tc
224 name <- cloneName mkPReprTyConOcc (tyConName orig_tc)
225 rhs_ty <- buildPReprType vect_tc
226 prepr_tc <- builtin preprTyCon
227 liftDs $ buildSynTyCon name
229 (SynonymTyCon rhs_ty)
231 (Just $ mk_fam_inst prepr_tc vect_tc)
233 tyvars = tyConTyVars vect_tc
236 data Repr = ProdRepr {
237 prod_components :: [Type]
238 , prod_tycon :: TyCon
239 , prod_data_con :: DataCon
240 , prod_arr_tycon :: TyCon
241 , prod_arr_data_con :: DataCon
245 sum_components :: [Repr]
247 , sum_arr_tycon :: TyCon
248 , sum_arr_data_con :: DataCon
255 , void_bottom :: CoreExpr
260 , enum_data_con :: DataCon
261 , enum_arr_tycon :: TyCon
262 , enum_arr_data_con :: DataCon
268 tycon <- builtin voidTyCon
269 var <- builtin voidVar
272 , void_bottom = Var var
279 tycon <- builtin enumerationTyCon
280 let [data_con] = tyConDataCons tycon
281 (arr_tycon, _) <- parrayReprTyCon (mkTyConApp tycon [])
282 let [arr_data_con] = tyConDataCons arr_tycon
286 , enum_data_con = data_con
287 , enum_arr_tycon = arr_tycon
288 , enum_arr_data_con = arr_data_con
292 unboxedProductRepr :: [Type] -> VM Repr
293 unboxedProductRepr [] = voidRepr
294 unboxedProductRepr [ty] = return $ IdRepr ty
295 unboxedProductRepr tys = boxedProductRepr tys
297 boxedProductRepr :: [Type] -> VM Repr
300 tycon <- builtin (prodTyCon arity)
301 let [data_con] = tyConDataCons tycon
303 tys' <- mapM boxType tys
304 (arr_tycon, _) <- parrayReprTyCon $ mkTyConApp tycon tys'
305 let [arr_data_con] = tyConDataCons arr_tycon
308 prod_components = tys
310 , prod_data_con = data_con
311 , prod_arr_tycon = arr_tycon
312 , prod_arr_data_con = arr_data_con
317 sumRepr :: [Repr] -> VM Repr
318 sumRepr [] = voidRepr
319 sumRepr [repr] = boxRepr repr
322 tycon <- builtin (sumTyCon arity)
323 (arr_tycon, _) <- parrayReprTyCon
327 let [arr_data_con] = tyConDataCons arr_tycon
330 sum_components = reprs
332 , sum_arr_tycon = arr_tycon
333 , sum_arr_data_con = arr_data_con
338 splitSumRepr :: Repr -> [Repr]
339 splitSumRepr (SumRepr { sum_components = reprs }) = reprs
340 splitSumRepr repr = [repr]
342 boxRepr :: Repr -> VM Repr
343 boxRepr (VoidRepr {}) = boxedProductRepr []
344 boxRepr (IdRepr ty) = boxedProductRepr [ty]
345 boxRepr repr = return repr
347 reprType :: Repr -> Type
348 reprType (ProdRepr { prod_tycon = tycon, prod_components = tys })
349 = mkTyConApp tycon tys
350 reprType (SumRepr { sum_tycon = tycon, sum_components = reprs })
351 = mkTyConApp tycon (map reprType reprs)
352 reprType (IdRepr ty) = ty
353 reprType (VoidRepr { void_tycon = tycon }) = mkTyConApp tycon []
354 reprType (EnumRepr { enum_tycon = tycon }) = mkTyConApp tycon []
356 arrReprType :: Repr -> VM Type
357 arrReprType = mkPArrayType . reprType
359 arrShapeTys :: Repr -> VM [Type]
360 arrShapeTys (SumRepr {}) = sumShapeTys
361 arrShapeTys (ProdRepr {}) = return [intPrimTy]
362 arrShapeTys (IdRepr _) = return []
363 arrShapeTys (VoidRepr {}) = return [intPrimTy]
364 arrShapeTys (EnumRepr {}) = sumShapeTys
366 sumShapeTys :: VM [Type]
368 int_arr <- builtin intPrimArrayTy
369 return [intPrimTy, int_arr, int_arr]
372 arrShapeVars :: Repr -> VM [Var]
373 arrShapeVars repr = mapM (newLocalVar (fsLit "sh")) =<< arrShapeTys repr
375 replicateShape :: Repr -> CoreExpr -> CoreExpr -> VM [CoreExpr]
376 replicateShape (ProdRepr {}) len _ = return [len]
377 replicateShape (SumRepr {}) len tag = replicateSumShape len tag
378 replicateShape (IdRepr _) _ _ = return []
379 replicateShape (VoidRepr {}) len _ = return [len]
380 replicateShape (EnumRepr {}) len tag = replicateSumShape len tag
382 replicateSumShape :: CoreExpr -> CoreExpr -> VM [CoreExpr]
383 replicateSumShape len tag
385 rep <- builtin replicatePAIntPrimVar
386 up <- builtin upToPAIntPrimVar
387 return [len, Var rep `mkApps` [len, tag], Var up `App` len]
389 arrSelector :: Repr -> [CoreExpr] -> VM (CoreExpr, CoreExpr, CoreExpr)
390 arrSelector (SumRepr {}) [len, sel, is] = return (len, sel, is)
391 arrSelector (EnumRepr {}) [len, sel, is] = return (len, sel, is)
392 arrSelector _ _ = panic "arrSelector"
394 emptyArrRepr :: Repr -> VM [CoreExpr]
395 emptyArrRepr (SumRepr { sum_components = prods })
396 = liftM concat $ mapM emptyArrRepr prods
397 emptyArrRepr (ProdRepr { prod_components = [] })
398 = return [Var unitDataConId]
399 emptyArrRepr (ProdRepr { prod_components = tys })
401 emptyArrRepr (IdRepr ty)
402 = liftM singleton $ emptyPA ty
403 emptyArrRepr (VoidRepr { void_tycon = tycon })
404 = liftM singleton $ emptyPA (mkTyConApp tycon [])
405 emptyArrRepr (EnumRepr {})
408 arrReprTys :: Repr -> VM [Type]
409 arrReprTys (SumRepr { sum_components = reprs })
410 = liftM concat $ mapM arrReprTys reprs
411 arrReprTys (ProdRepr { prod_components = [] })
413 arrReprTys (ProdRepr { prod_components = tys })
414 = mapM mkPArrayType tys
415 arrReprTys (IdRepr ty)
416 = liftM singleton $ mkPArrayType ty
417 arrReprTys (VoidRepr { void_tycon = tycon })
418 = liftM singleton $ mkPArrayType (mkTyConApp tycon [])
419 arrReprTys (EnumRepr {})
422 arrReprTys' :: Repr -> VM [[Type]]
423 arrReprTys' (SumRepr { sum_components = reprs })
424 = mapM arrReprTys reprs
425 arrReprTys' repr = liftM singleton $ arrReprTys repr
427 arrReprVars :: Repr -> VM [[Var]]
429 = mapM (mapM (newLocalVar (fsLit "rs"))) =<< arrReprTys' repr
431 mkRepr :: TyCon -> VM Repr
433 | [tys] <- rep_tys = boxedProductRepr tys
434 -- removed: | all null rep_tys = enumRepr
435 | otherwise = sumRepr =<< mapM unboxedProductRepr rep_tys
437 rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
439 buildPReprType :: TyCon -> VM Type
440 buildPReprType = liftM reprType . mkRepr
442 buildToPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
443 buildToPRepr repr vect_tc prepr_tc _
445 arg <- newLocalVar (fsLit "x") arg_ty
446 result <- to_repr repr (Var arg)
449 . wrapFamInstBody prepr_tc var_tys
452 var_tys = mkTyVarTys $ tyConTyVars vect_tc
453 arg_ty = mkTyConApp vect_tc var_tys
454 res_ty = reprType repr
456 cons = tyConDataCons vect_tc
459 to_repr (SumRepr { sum_components = prods
460 , sum_tycon = tycon })
463 (vars, bodies) <- mapAndUnzipM to_unboxed prods
464 return . Case expr (mkWildId (exprType expr)) res_ty
465 $ zipWith4 mk_alt cons vars (tyConDataCons tycon) bodies
467 mk_alt con vars sum_con body
468 = (DataAlt con, vars, mkConApp sum_con (ty_args ++ [body]))
470 ty_args = map (Type . reprType) prods
472 to_repr (EnumRepr { enum_data_con = data_con }) expr
473 = return . Case expr (mkWildId (exprType expr)) res_ty
476 mk_alt con = (DataAlt con, [], mkConApp data_con [mkDataConTag con])
480 (vars, body) <- to_unboxed prod
481 return $ Case expr (mkWildId (exprType expr)) res_ty
482 [(DataAlt con, vars, body)]
484 to_unboxed (ProdRepr { prod_components = tys
485 , prod_data_con = data_con })
487 vars <- mapM (newLocalVar (fsLit "r")) tys
488 return (vars, mkConApp data_con (map Type tys ++ map Var vars))
490 to_unboxed (IdRepr ty)
492 var <- newLocalVar (fsLit "y") ty
493 return ([var], Var var)
495 to_unboxed (VoidRepr { void_bottom = bottom })
496 = return ([], bottom)
498 to_unboxed _ = panic "buildToPRepr/to_unboxed"
501 buildFromPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
502 buildFromPRepr repr vect_tc prepr_tc _
504 arg_ty <- mkPReprType res_ty
505 arg <- newLocalVar (fsLit "x") arg_ty
509 $ unwrapFamInstScrut prepr_tc var_tys (Var arg)
511 var_tys = mkTyVarTys $ tyConTyVars vect_tc
512 res_ty = mkTyConApp vect_tc var_tys
514 cons = map (`mkConApp` map Type var_tys) (tyConDataCons vect_tc)
517 from_repr repr@(SumRepr { sum_components = prods
518 , sum_tycon = tycon })
521 vars <- mapM (newLocalVar (fsLit "x")) (map reprType prods)
522 bodies <- sequence . zipWith3 from_unboxed prods cons
524 return . Case expr (mkWildId (reprType repr)) res_ty
525 $ zipWith3 sum_alt (tyConDataCons tycon) vars bodies
527 sum_alt data_con var body = (DataAlt data_con, [var], body)
529 from_repr repr@(EnumRepr { enum_data_con = data_con }) expr
531 var <- newLocalVar (fsLit "n") intPrimTy
533 let res = Case (Var var) (mkWildId intPrimTy) res_ty
534 $ (DEFAULT, [], error_expr)
535 : zipWith mk_alt (tyConDataCons vect_tc) cons
537 return $ Case expr (mkWildId (reprType repr)) res_ty
538 [(DataAlt data_con, [var], res)]
540 mk_alt data_con con = (LitAlt (mkDataConTagLit data_con), [], con)
542 error_expr = mkRuntimeErrorApp rUNTIME_ERROR_ID res_ty
544 $ sep [text "Invalid NDP representation of", ppr vect_tc]
546 from_repr repr expr = from_unboxed repr con expr
548 from_unboxed prod@(ProdRepr { prod_components = tys
549 , prod_data_con = data_con })
553 vars <- mapM (newLocalVar (fsLit "y")) tys
554 return $ Case expr (mkWildId (reprType prod)) res_ty
555 [(DataAlt data_con, vars, con `mkVarApps` vars)]
557 from_unboxed (IdRepr _) con expr
558 = return $ con `App` expr
560 from_unboxed (VoidRepr {}) con _
563 from_unboxed _ _ _ = panic "buildFromPRepr/from_unboxed"
565 buildToArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
566 buildToArrPRepr repr vect_tc prepr_tc arr_tc
568 arg_ty <- mkPArrayType el_ty
569 arg <- newLocalVar (fsLit "xs") arg_ty
571 res_ty <- mkPArrayType (reprType repr)
573 shape_vars <- arrShapeVars repr
574 repr_vars <- arrReprVars repr
576 parray_co <- mkBuiltinCo parrayTyCon
578 let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
579 co = mkAppCoercion parray_co
581 $ mkTyConApp repr_co var_tys
583 scrut = unwrapFamInstScrut arr_tc var_tys (Var arg)
585 result <- to_repr shape_vars repr_vars repr
589 $ Case scrut (mkWildId (mkTyConApp arr_tc var_tys)) res_ty
590 [(DataAlt arr_dc, shape_vars ++ concat repr_vars, result)]
592 var_tys = mkTyVarTys $ tyConTyVars vect_tc
593 el_ty = mkTyConApp vect_tc var_tys
595 [arr_dc] = tyConDataCons arr_tc
597 to_repr shape_vars@(_ : _)
599 (SumRepr { sum_components = prods
600 , sum_arr_tycon = tycon
601 , sum_arr_data_con = data_con })
603 exprs <- zipWithM to_prod repr_vars prods
605 return . wrapFamInstBody tycon tys
607 $ map Type tys ++ map Var shape_vars ++ exprs
609 tys = map reprType prods
613 (ProdRepr { prod_components = tys
614 , prod_arr_tycon = tycon
615 , prod_arr_data_con = data_con })
616 = return . wrapFamInstBody tycon tys
618 $ map Type tys ++ map Var (len_var : repr_vars)
622 (EnumRepr { enum_arr_tycon = tycon
623 , enum_arr_data_con = data_con })
624 = return . wrapFamInstBody tycon []
628 to_repr _ _ _ = panic "buildToArrPRepr/to_repr"
630 to_prod repr_vars@(r : _)
631 (ProdRepr { prod_components = tys@(ty : _)
632 , prod_arr_tycon = tycon
633 , prod_arr_data_con = data_con })
635 len <- lengthPA ty (Var r)
636 return . wrapFamInstBody tycon tys
638 $ map Type tys ++ len : map Var repr_vars
640 to_prod [var] (IdRepr _) = return (Var var)
641 to_prod [var] (VoidRepr {}) = return (Var var)
642 to_prod _ _ = panic "buildToArrPRepr/to_prod"
645 buildFromArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
646 buildFromArrPRepr repr vect_tc prepr_tc arr_tc
648 arg_ty <- mkPArrayType =<< mkPReprType el_ty
649 arg <- newLocalVar (fsLit "xs") arg_ty
651 res_ty <- mkPArrayType el_ty
653 shape_vars <- arrShapeVars repr
654 repr_vars <- arrReprVars repr
656 parray_co <- mkBuiltinCo parrayTyCon
658 let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
659 co = mkAppCoercion parray_co
660 $ mkTyConApp repr_co var_tys
662 scrut = mkCoerce co (Var arg)
664 result = wrapFamInstBody arr_tc var_tys
666 $ map Type var_tys ++ map Var (shape_vars ++ concat repr_vars)
669 (from_repr repr scrut shape_vars repr_vars res_ty result)
671 var_tys = mkTyVarTys $ tyConTyVars vect_tc
672 el_ty = mkTyConApp vect_tc var_tys
674 [arr_dc] = tyConDataCons arr_tc
676 from_repr (SumRepr { sum_components = prods
677 , sum_arr_tycon = tycon
678 , sum_arr_data_con = data_con })
685 vars <- mapM (newLocalVar (fsLit "xs")) =<< mapM arrReprType prods
686 result <- go prods repr_vars vars body
688 let scrut = unwrapFamInstScrut tycon ty_args expr
689 return . Case scrut (mkWildId scrut_ty) res_ty
690 $ [(DataAlt data_con, shape_vars ++ vars, result)]
692 ty_args = map reprType prods
693 scrut_ty = mkTyConApp tycon ty_args
695 go [] [] [] body = return body
696 go (prod : prods) (repr_vars : rss) (var : vars) body
698 shape_vars <- mapM (newLocalVar (fsLit "s")) =<< arrShapeTys prod
700 from_prod prod (Var var) shape_vars repr_vars res_ty
701 =<< go prods rss vars body
702 go _ _ _ _ = panic "buildFromArrPRepr/go"
704 from_repr repr expr shape_vars [repr_vars] res_ty body
705 = from_prod repr expr shape_vars repr_vars res_ty body
707 from_repr _ _ _ _ _ _ = panic "buildFromArrPRepr/from_repr"
709 from_prod (ProdRepr { prod_components = tys
710 , prod_arr_tycon = tycon
711 , prod_arr_data_con = data_con })
718 let scrut = unwrapFamInstScrut tycon tys expr
719 scrut_ty = mkTyConApp tycon tys
721 return $ Case scrut (mkWildId scrut_ty) res_ty
722 [(DataAlt data_con, shape_vars ++ repr_vars, body)]
724 from_prod (EnumRepr { enum_arr_tycon = tycon
725 , enum_arr_data_con = data_con })
731 = let scrut = unwrapFamInstScrut tycon [] expr
732 scrut_ty = mkTyConApp tycon []
734 return $ Case scrut (mkWildId scrut_ty) res_ty
735 [(DataAlt data_con, shape_vars, body)]
743 = return $ Let (NonRec repr_var expr) body
745 from_prod (VoidRepr {})
751 = return $ Let (NonRec repr_var expr) body
753 from_prod _ _ _ _ _ _ = panic "buildFromArrPRepr/from_prod"
755 buildPRDictRepr :: Repr -> VM CoreExpr
756 buildPRDictRepr (VoidRepr { void_tycon = tycon })
757 = prDFunOfTyCon tycon
758 buildPRDictRepr (IdRepr ty) = mkPR ty
759 buildPRDictRepr (ProdRepr {
760 prod_components = tys
765 dfun <- prDFunOfTyCon tycon
766 return $ dfun `mkTyApps` tys `mkApps` prs
768 buildPRDictRepr (SumRepr {
769 sum_components = prods
770 , sum_tycon = tycon })
772 prs <- mapM buildPRDictRepr prods
773 dfun <- prDFunOfTyCon tycon
774 return $ dfun `mkTyApps` map reprType prods `mkApps` prs
776 buildPRDictRepr (EnumRepr { enum_tycon = tycon })
777 = prDFunOfTyCon tycon
779 buildPRDict :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
780 buildPRDict repr vect_tc prepr_tc _
782 dict <- buildPRDictRepr repr
784 pr_co <- mkBuiltinCo prTyCon
785 let co = mkAppCoercion pr_co
787 $ mkTyConApp arg_co var_tys
789 return $ mkCoerce co dict
791 var_tys = mkTyVarTys $ tyConTyVars vect_tc
793 Just arg_co = tyConFamilyCoercion_maybe prepr_tc
795 buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
796 buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
798 name' <- cloneName mkPArrayTyConOcc orig_name
799 rhs <- buildPArrayTyConRhs orig_name vect_tc repr_tc
800 parray <- builtin parrayTyCon
802 liftDs $ buildAlgTyCon name'
804 [] -- no stupid theta
806 rec_flag -- FIXME: is this ok?
807 False -- FIXME: no generics
808 False -- not GADT syntax
809 (Just $ mk_fam_inst parray vect_tc)
811 orig_name = tyConName orig_tc
812 tyvars = tyConTyVars vect_tc
813 rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
816 buildPArrayTyConRhs :: Name -> TyCon -> TyCon -> VM AlgTyConRhs
817 buildPArrayTyConRhs orig_name vect_tc repr_tc
819 data_con <- buildPArrayDataCon orig_name vect_tc repr_tc
820 return $ DataTyCon { data_cons = [data_con], is_enum = False }
822 buildPArrayDataCon :: Name -> TyCon -> TyCon -> VM DataCon
823 buildPArrayDataCon orig_name vect_tc repr_tc
825 dc_name <- cloneName mkPArrayDataConOcc orig_name
826 repr <- mkRepr vect_tc
828 shape_tys <- arrShapeTys repr
829 repr_tys <- arrReprTys repr
831 let tys = shape_tys ++ repr_tys
833 liftDs $ buildDataCon dc_name
835 (map (const NotMarkedStrict) tys)
836 [] -- no field labels
837 (tyConTyVars vect_tc)
838 [] -- no existentials
844 mkPADFun :: TyCon -> VM Var
846 = newExportedVar (mkPADFunOcc $ getOccName vect_tc) =<< paDFunType vect_tc
848 buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> Var
849 -> VM [(Var, CoreExpr)]
850 buildTyConBindings orig_tc vect_tc prepr_tc arr_tc dfun
852 repr <- mkRepr vect_tc
853 vectDataConWorkers repr orig_tc vect_tc arr_tc
854 dict <- buildPADict repr vect_tc prepr_tc arr_tc dfun
856 return $ (dfun, dict) : binds
858 vectDataConWorkers :: Repr -> TyCon -> TyCon -> TyCon
860 vectDataConWorkers repr orig_tc vect_tc arr_tc
863 . zipWith3 def_worker (tyConDataCons orig_tc) rep_tys
864 $ zipWith4 mk_data_con (tyConDataCons vect_tc)
868 mapM_ (uncurry hoistBinding) bs
870 tyvars = tyConTyVars vect_tc
871 var_tys = mkTyVarTys tyvars
872 ty_args = map Type var_tys
874 res_ty = mkTyConApp vect_tc var_tys
876 rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
877 reprs = splitSumRepr repr
879 [arr_dc] = tyConDataCons arr_tc
881 mk_data_con con tys pre post
882 = liftM2 (,) (vect_data_con con)
883 (lift_data_con tys pre post (mkDataConTag con))
885 vect_data_con con = return $ mkConApp con ty_args
886 lift_data_con tys pre_reprs post_reprs tag
888 len <- builtin liftingContext
889 args <- mapM (newLocalVar (fsLit "xs"))
890 =<< mapM mkPArrayType tys
892 shape <- replicateShape repr (Var len) tag
893 repr <- mk_arr_repr (Var len) (map Var args)
895 pre <- liftM concat $ mapM emptyArrRepr pre_reprs
896 post <- liftM concat $ mapM emptyArrRepr post_reprs
898 return . mkLams (len : args)
899 . wrapFamInstBody arr_tc var_tys
901 $ ty_args ++ shape ++ pre ++ repr ++ post
905 units <- replicatePA len (Var unitDataConId)
908 mk_arr_repr _ arrs = return arrs
910 def_worker data_con arg_tys mk_body
914 . polyAbstract tyvars $ \abstract ->
915 liftM (abstract . vectorised)
916 $ buildClosures tyvars [] arg_tys res_ty mk_body
918 vect_worker <- cloneId mkVectOcc orig_worker (exprType body)
919 defGlobalVar orig_worker vect_worker
920 return (vect_worker, body)
922 orig_worker = dataConWorkId data_con
924 buildPADict :: Repr -> TyCon -> TyCon -> TyCon -> Var -> VM CoreExpr
925 buildPADict repr vect_tc prepr_tc arr_tc _
926 = polyAbstract tvs $ \abstract ->
928 meth_binds <- mapM (mk_method repr) paMethods
929 let meth_exprs = map (Var . fst) meth_binds
931 pa_dc <- builtin paDataCon
932 let dict = mkConApp pa_dc (Type (mkTyConApp vect_tc arg_tys) : meth_exprs)
933 body = Let (Rec meth_binds) dict
934 return . mkInlineMe $ abstract body
936 tvs = tyConTyVars arr_tc
937 arg_tys = mkTyVarTys tvs
939 mk_method repr (name, build)
942 body <- build repr vect_tc prepr_tc arr_tc
943 var <- newLocalVar name (exprType body)
944 return (var, mkInlineMe body)
946 paMethods :: [(FastString, Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr)]
947 paMethods = [(fsLit "toPRepr", buildToPRepr),
948 (fsLit "fromPRepr", buildFromPRepr),
949 (fsLit "toArrPRepr", buildToArrPRepr),
950 (fsLit "fromArrPRepr", buildFromArrPRepr),
951 (fsLit "dictPRepr", buildPRDict)]
953 -- | Split the given tycons into two sets depending on whether they have to be
954 -- converted (first list) or not (second list). The first argument contains
955 -- information about the conversion status of external tycons:
957 -- * tycons which have converted versions are mapped to True
958 -- * tycons which are not changed by vectorisation are mapped to False
959 -- * tycons which can't be converted are not elements of the map
961 classifyTyCons :: UniqFM Bool -> [TyConGroup] -> ([TyCon], [TyCon])
962 classifyTyCons = classify [] []
964 classify conv keep _ [] = (conv, keep)
965 classify conv keep cs ((tcs, ds) : rs)
966 | can_convert && must_convert
967 = classify (tcs ++ conv) keep (cs `addListToUFM` [(tc,True) | tc <- tcs]) rs
969 = classify conv (tcs ++ keep) (cs `addListToUFM` [(tc,False) | tc <- tcs]) rs
971 = classify conv keep cs rs
973 refs = ds `delListFromUniqSet` tcs
975 can_convert = isNullUFM (refs `minusUFM` cs) && all convertable tcs
976 must_convert = foldUFM (||) False (intersectUFM_C const cs refs)
978 convertable tc = isDataTyCon tc && all isVanillaDataCon (tyConDataCons tc)
980 -- | Compute mutually recursive groups of tycons in topological order
982 tyConGroups :: [TyCon] -> [TyConGroup]
983 tyConGroups tcs = map mk_grp (stronglyConnCompFromEdgedVertices edges)
985 edges = [((tc, ds), tc, uniqSetToList ds) | tc <- tcs
986 , let ds = tyConsOfTyCon tc]
988 mk_grp (AcyclicSCC (tc, ds)) = ([tc], ds)
989 mk_grp (CyclicSCC els) = (tcs, unionManyUniqSets dss)
991 (tcs, dss) = unzip els
993 tyConsOfTyCon :: TyCon -> UniqSet TyCon
995 = tyConsOfTypes . concatMap dataConRepArgTys . tyConDataCons
997 tyConsOfType :: Type -> UniqSet TyCon
999 | Just ty' <- coreView ty = tyConsOfType ty'
1000 tyConsOfType (TyVarTy _) = emptyUniqSet
1001 tyConsOfType (TyConApp tc tys) = extend (tyConsOfTypes tys)
1003 extend | isUnLiftedTyCon tc
1004 || isTupleTyCon tc = id
1006 | otherwise = (`addOneToUniqSet` tc)
1008 tyConsOfType (AppTy a b) = tyConsOfType a `unionUniqSets` tyConsOfType b
1009 tyConsOfType (FunTy a b) = (tyConsOfType a `unionUniqSets` tyConsOfType b)
1010 `addOneToUniqSet` funTyCon
1011 tyConsOfType (ForAllTy _ ty) = tyConsOfType ty
1012 tyConsOfType other = pprPanic "ClosureConv.tyConsOfType" $ ppr other
1014 tyConsOfTypes :: [Type] -> UniqSet TyCon
1015 tyConsOfTypes = unionManyUniqSets . map tyConsOfType
1018 -- ----------------------------------------------------------------------------
1021 fromVect :: Type -> CoreExpr -> VM CoreExpr
1022 fromVect ty expr | Just ty' <- coreView ty = fromVect ty' expr
1023 fromVect (FunTy arg_ty res_ty) expr
1025 arg <- newLocalVar (fsLit "x") arg_ty
1026 varg <- toVect arg_ty (Var arg)
1027 varg_ty <- vectType arg_ty
1028 vres_ty <- vectType res_ty
1029 apply <- builtin applyClosureVar
1030 body <- fromVect res_ty
1031 $ Var apply `mkTyApps` [varg_ty, vres_ty] `mkApps` [expr, varg]
1032 return $ Lam arg body
1034 = identityConv ty >> return expr
1036 toVect :: Type -> CoreExpr -> VM CoreExpr
1037 toVect ty expr = identityConv ty >> return expr
1039 identityConv :: Type -> VM ()
1040 identityConv ty | Just ty' <- coreView ty = identityConv ty'
1041 identityConv (TyConApp tycon tys)
1043 mapM_ identityConv tys
1044 identityConvTyCon tycon
1045 identityConv _ = noV
1047 identityConvTyCon :: TyCon -> VM ()
1048 identityConvTyCon tc
1049 | isBoxedTupleTyCon tc = return ()
1050 | isUnLiftedTyCon tc = return ()
1052 tc' <- maybeV (lookupTyCon tc)
1053 if tc == tc' then return () else noV