2 module VectType ( vectTyCon, vectAndLiftType, vectType, vectTypeEnv,
3 mkRepr, arrShapeTys, arrShapeVars, arrSelector,
12 import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
15 import MkCore ( mkWildCase )
22 import FamInstEnv ( FamInst, mkLocalFamInst )
25 import BasicTypes ( StrictnessMark(..), boolToRecFlag )
26 import Var ( Var, TyVar )
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
52 | otherwise = maybeCantVectoriseM "Tycon not vectorised:" (ppr tc)
55 vectAndLiftType :: Type -> VM (Type, Type)
56 vectAndLiftType ty | Just ty' <- coreView ty = vectAndLiftType ty'
59 mdicts <- mapM paDictArgType tyvars
60 let dicts = [dict | Just dict <- mdicts]
61 vmono_ty <- vectType mono_ty
62 lmono_ty <- mkPArrayType vmono_ty
63 return (abstractType tyvars dicts vmono_ty,
64 abstractType tyvars dicts lmono_ty)
66 (tyvars, mono_ty) = splitForAllTys ty
69 vectType :: Type -> VM Type
70 vectType ty | Just ty' <- coreView ty = vectType ty'
71 vectType (TyVarTy tv) = return $ TyVarTy tv
72 vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
73 vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
74 vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
75 (mapM vectAndBoxType [ty1,ty2])
76 vectType ty@(ForAllTy _ _)
78 mdicts <- mapM paDictArgType tyvars
79 mono_ty' <- vectType mono_ty
80 return $ abstractType tyvars [dict | Just dict <- mdicts] mono_ty'
82 (tyvars, mono_ty) = splitForAllTys ty
84 vectType ty = cantVectorise "Can't vectorise type" (ppr ty)
86 vectAndBoxType :: Type -> VM Type
87 vectAndBoxType ty = vectType ty >>= boxType
89 abstractType :: [TyVar] -> [Type] -> Type -> Type
90 abstractType tyvars dicts = mkForAllTys tyvars . mkFunTys dicts
92 -- ----------------------------------------------------------------------------
95 boxType :: Type -> VM Type
97 | Just (tycon, []) <- splitTyConApp_maybe ty
98 , isUnLiftedTyCon tycon
100 r <- lookupBoxedTyCon tycon
102 Just tycon' -> return $ mkTyConApp tycon' []
104 boxType ty = return ty
106 -- ----------------------------------------------------------------------------
109 type TyConGroup = ([TyCon], UniqSet TyCon)
111 vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [(Var, CoreExpr)])
114 cs <- readGEnv $ mk_map . global_tycons
115 let (conv_tcs, keep_tcs) = classifyTyCons cs groups
116 keep_dcs = concatMap tyConDataCons keep_tcs
117 zipWithM_ defTyCon keep_tcs keep_tcs
118 zipWithM_ defDataCon keep_dcs keep_dcs
119 new_tcs <- vectTyConDecls conv_tcs
121 let orig_tcs = keep_tcs ++ conv_tcs
122 vect_tcs = keep_tcs ++ new_tcs
124 repr_tcs <- zipWithM buildPReprTyCon orig_tcs vect_tcs
125 parr_tcs <- zipWithM buildPArrayTyCon orig_tcs vect_tcs
126 dfuns <- mapM mkPADFun vect_tcs
127 defTyConPAs (zip vect_tcs dfuns)
128 binds <- sequence (zipWith5 buildTyConBindings orig_tcs
134 let all_new_tcs = new_tcs ++ repr_tcs ++ parr_tcs
136 let new_env = extendTypeEnvList env
137 (map ATyCon all_new_tcs
138 ++ [ADataCon dc | tc <- all_new_tcs
139 , dc <- tyConDataCons tc])
141 return (new_env, map mkLocalFamInst (repr_tcs ++ parr_tcs), concat binds)
143 tycons = typeEnvTyCons env
144 groups = tyConGroups tycons
146 mk_map env = listToUFM_Directly [(u, getUnique n /= u) | (u,n) <- nameEnvUniqueElts env]
149 vectTyConDecls :: [TyCon] -> VM [TyCon]
150 vectTyConDecls tcs = fixV $ \tcs' ->
152 mapM_ (uncurry defTyCon) (zipLazy tcs tcs')
153 mapM vectTyConDecl tcs
155 vectTyConDecl :: TyCon -> VM TyCon
158 name' <- cloneName mkVectTyConOcc name
159 rhs' <- vectAlgTyConRhs tc (algTyConRhs tc)
161 liftDs $ buildAlgTyCon name'
163 [] -- no stupid theta
165 rec_flag -- FIXME: is this ok?
166 False -- FIXME: no generics
167 False -- not GADT syntax
168 Nothing -- not a family instance
171 tyvars = tyConTyVars tc
172 rec_flag = boolToRecFlag (isRecursiveTyCon tc)
174 vectAlgTyConRhs :: TyCon -> AlgTyConRhs -> VM AlgTyConRhs
175 vectAlgTyConRhs _ (DataTyCon { data_cons = data_cons
179 data_cons' <- mapM vectDataCon data_cons
180 zipWithM_ defDataCon data_cons data_cons'
181 return $ DataTyCon { data_cons = data_cons'
184 vectAlgTyConRhs tc _ = cantVectorise "Can't vectorise type definition:" (ppr tc)
186 vectDataCon :: DataCon -> VM DataCon
188 | not . null $ dataConExTyVars dc
189 = cantVectorise "Can't vectorise constructor (existentials):" (ppr dc)
190 | not . null $ dataConEqSpec dc
191 = cantVectorise "Can't vectorise constructor (eq spec):" (ppr dc)
194 name' <- cloneName mkVectDataConOcc name
195 tycon' <- vectTyCon tycon
196 arg_tys <- mapM vectType rep_arg_tys
198 liftDs $ buildDataCon name'
200 (map (const NotMarkedStrict) arg_tys)
201 [] -- no labelled fields
203 [] -- no existential tvs for now
204 [] -- no eq spec for now
207 (mkFamilyTyConApp tycon' (mkTyVarTys univ_tvs))
210 name = dataConName dc
211 univ_tvs = dataConUnivTyVars dc
212 rep_arg_tys = dataConRepArgTys dc
213 tycon = dataConTyCon dc
215 mk_fam_inst :: TyCon -> TyCon -> (TyCon, [Type])
216 mk_fam_inst fam_tc arg_tc
217 = (fam_tc, [mkTyConApp arg_tc . mkTyVarTys $ tyConTyVars arg_tc])
219 buildPReprTyCon :: TyCon -> TyCon -> VM TyCon
220 buildPReprTyCon orig_tc vect_tc
222 name <- cloneName mkPReprTyConOcc (tyConName orig_tc)
223 rhs_ty <- buildPReprType vect_tc
224 prepr_tc <- builtin preprTyCon
225 liftDs $ buildSynTyCon name
227 (SynonymTyCon rhs_ty)
229 (Just $ mk_fam_inst prepr_tc vect_tc)
231 tyvars = tyConTyVars vect_tc
234 data Repr = ProdRepr {
235 prod_components :: [Type]
236 , prod_tycon :: TyCon
237 , prod_data_con :: DataCon
238 , prod_arr_tycon :: TyCon
239 , prod_arr_data_con :: DataCon
243 sum_components :: [Repr]
245 , sum_arr_tycon :: TyCon
246 , sum_arr_data_con :: DataCon
253 , void_bottom :: CoreExpr
258 , enum_data_con :: DataCon
259 , enum_arr_tycon :: TyCon
260 , enum_arr_data_con :: DataCon
266 tycon <- builtin voidTyCon
267 var <- builtin voidVar
270 , void_bottom = Var var
277 tycon <- builtin enumerationTyCon
278 let [data_con] = tyConDataCons tycon
279 (arr_tycon, _) <- parrayReprTyCon (mkTyConApp tycon [])
280 let [arr_data_con] = tyConDataCons arr_tycon
284 , enum_data_con = data_con
285 , enum_arr_tycon = arr_tycon
286 , enum_arr_data_con = arr_data_con
290 unboxedProductRepr :: [Type] -> VM Repr
291 unboxedProductRepr [] = voidRepr
292 unboxedProductRepr [ty] = return $ IdRepr ty
293 unboxedProductRepr tys = boxedProductRepr tys
295 boxedProductRepr :: [Type] -> VM Repr
298 tycon <- builtin (prodTyCon arity)
299 let [data_con] = tyConDataCons tycon
301 tys' <- mapM boxType tys
302 (arr_tycon, _) <- parrayReprTyCon $ mkTyConApp tycon tys'
303 let [arr_data_con] = tyConDataCons arr_tycon
306 prod_components = tys
308 , prod_data_con = data_con
309 , prod_arr_tycon = arr_tycon
310 , prod_arr_data_con = arr_data_con
315 sumRepr :: [Repr] -> VM Repr
316 sumRepr [] = voidRepr
317 sumRepr [repr] = boxRepr repr
320 tycon <- builtin (sumTyCon arity)
321 (arr_tycon, _) <- parrayReprTyCon
325 let [arr_data_con] = tyConDataCons arr_tycon
328 sum_components = reprs
330 , sum_arr_tycon = arr_tycon
331 , sum_arr_data_con = arr_data_con
336 splitSumRepr :: Repr -> [Repr]
337 splitSumRepr (SumRepr { sum_components = reprs }) = reprs
338 splitSumRepr repr = [repr]
340 boxRepr :: Repr -> VM Repr
341 boxRepr (VoidRepr {}) = boxedProductRepr []
342 boxRepr (IdRepr ty) = boxedProductRepr [ty]
343 boxRepr repr = return repr
345 reprType :: Repr -> Type
346 reprType (ProdRepr { prod_tycon = tycon, prod_components = tys })
347 = mkTyConApp tycon tys
348 reprType (SumRepr { sum_tycon = tycon, sum_components = reprs })
349 = mkTyConApp tycon (map reprType reprs)
350 reprType (IdRepr ty) = ty
351 reprType (VoidRepr { void_tycon = tycon }) = mkTyConApp tycon []
352 reprType (EnumRepr { enum_tycon = tycon }) = mkTyConApp tycon []
354 arrReprType :: Repr -> VM Type
355 arrReprType = mkPArrayType . reprType
357 arrShapeTys :: Repr -> VM [Type]
358 arrShapeTys (SumRepr {}) = sumShapeTys
359 arrShapeTys (ProdRepr {}) = return [intPrimTy]
360 arrShapeTys (IdRepr _) = return []
361 arrShapeTys (VoidRepr {}) = return [intPrimTy]
362 arrShapeTys (EnumRepr {}) = sumShapeTys
364 sumShapeTys :: VM [Type]
366 int_arr <- builtin intPrimArrayTy
367 return [intPrimTy, int_arr, int_arr]
370 arrShapeVars :: Repr -> VM [Var]
371 arrShapeVars repr = mapM (newLocalVar (fsLit "sh")) =<< arrShapeTys repr
373 replicateShape :: Repr -> CoreExpr -> CoreExpr -> VM [CoreExpr]
374 replicateShape (ProdRepr {}) len _ = return [len]
375 replicateShape (SumRepr {}) len tag = replicateSumShape len tag
376 replicateShape (IdRepr _) _ _ = return []
377 replicateShape (VoidRepr {}) len _ = return [len]
378 replicateShape (EnumRepr {}) len tag = replicateSumShape len tag
380 replicateSumShape :: CoreExpr -> CoreExpr -> VM [CoreExpr]
381 replicateSumShape len tag
383 rep <- builtin replicatePAIntPrimVar
384 up <- builtin upToPAIntPrimVar
385 return [len, Var rep `mkApps` [len, tag], Var up `App` len]
387 arrSelector :: Repr -> [CoreExpr] -> VM (CoreExpr, CoreExpr, CoreExpr)
388 arrSelector (SumRepr {}) [len, sel, is] = return (len, sel, is)
389 arrSelector (EnumRepr {}) [len, sel, is] = return (len, sel, is)
390 arrSelector _ _ = panic "arrSelector"
392 emptyArrRepr :: Repr -> VM [CoreExpr]
393 emptyArrRepr (SumRepr { sum_components = prods })
394 = liftM concat $ mapM emptyArrRepr prods
395 emptyArrRepr (ProdRepr { prod_components = [] })
396 = return [Var unitDataConId]
397 emptyArrRepr (ProdRepr { prod_components = tys })
399 emptyArrRepr (IdRepr ty)
400 = liftM singleton $ emptyPA ty
401 emptyArrRepr (VoidRepr { void_tycon = tycon })
402 = liftM singleton $ emptyPA (mkTyConApp tycon [])
403 emptyArrRepr (EnumRepr {})
406 arrReprTys :: Repr -> VM [Type]
407 arrReprTys (SumRepr { sum_components = reprs })
408 = liftM concat $ mapM arrReprTys reprs
409 arrReprTys (ProdRepr { prod_components = [] })
411 arrReprTys (ProdRepr { prod_components = tys })
412 = mapM mkPArrayType tys
413 arrReprTys (IdRepr ty)
414 = liftM singleton $ mkPArrayType ty
415 arrReprTys (VoidRepr { void_tycon = tycon })
416 = liftM singleton $ mkPArrayType (mkTyConApp tycon [])
417 arrReprTys (EnumRepr {})
420 arrReprTys' :: Repr -> VM [[Type]]
421 arrReprTys' (SumRepr { sum_components = reprs })
422 = mapM arrReprTys reprs
423 arrReprTys' repr = liftM singleton $ arrReprTys repr
425 arrReprVars :: Repr -> VM [[Var]]
427 = mapM (mapM (newLocalVar (fsLit "rs"))) =<< arrReprTys' repr
429 mkRepr :: TyCon -> VM Repr
431 | [tys] <- rep_tys = boxedProductRepr tys
432 -- removed: | all null rep_tys = enumRepr
433 | otherwise = sumRepr =<< mapM unboxedProductRepr rep_tys
435 rep_tys = map dataConRepArgTys $ tyConDataCons vect_tc
437 buildPReprType :: TyCon -> VM Type
438 buildPReprType = liftM reprType . mkRepr
440 buildToPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
441 buildToPRepr repr vect_tc prepr_tc _
443 arg <- newLocalVar (fsLit "x") arg_ty
444 result <- to_repr repr (Var arg)
447 . wrapFamInstBody prepr_tc var_tys
450 var_tys = mkTyVarTys $ tyConTyVars vect_tc
451 arg_ty = mkTyConApp vect_tc var_tys
452 res_ty = reprType repr
454 cons = tyConDataCons vect_tc
457 to_repr (SumRepr { sum_components = prods
458 , sum_tycon = tycon })
461 (vars, bodies) <- mapAndUnzipM to_unboxed prods
462 return . mkWildCase expr (exprType expr) res_ty
463 $ zipWith4 mk_alt cons vars (tyConDataCons tycon) bodies
465 mk_alt con vars sum_con body
466 = (DataAlt con, vars, mkConApp sum_con (ty_args ++ [body]))
468 ty_args = map (Type . reprType) prods
470 to_repr (EnumRepr { enum_data_con = data_con }) expr
471 = return . mkWildCase expr (exprType expr) res_ty
474 mk_alt con = (DataAlt con, [], mkConApp data_con [mkDataConTag con])
478 (vars, body) <- to_unboxed prod
479 return $ mkWildCase expr (exprType expr) res_ty
480 [(DataAlt con, vars, body)]
482 to_unboxed (ProdRepr { prod_components = tys
483 , prod_data_con = data_con })
485 vars <- mapM (newLocalVar (fsLit "r")) tys
486 return (vars, mkConApp data_con (map Type tys ++ map Var vars))
488 to_unboxed (IdRepr ty)
490 var <- newLocalVar (fsLit "y") ty
491 return ([var], Var var)
493 to_unboxed (VoidRepr { void_bottom = bottom })
494 = return ([], bottom)
496 to_unboxed _ = panic "buildToPRepr/to_unboxed"
499 buildFromPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
500 buildFromPRepr repr vect_tc prepr_tc _
502 arg_ty <- mkPReprType res_ty
503 arg <- newLocalVar (fsLit "x") arg_ty
507 $ unwrapFamInstScrut prepr_tc var_tys (Var arg)
509 var_tys = mkTyVarTys $ tyConTyVars vect_tc
510 res_ty = mkTyConApp vect_tc var_tys
512 cons = map (`mkConApp` map Type var_tys) (tyConDataCons vect_tc)
515 from_repr repr@(SumRepr { sum_components = prods
516 , sum_tycon = tycon })
519 vars <- mapM (newLocalVar (fsLit "x")) (map reprType prods)
520 bodies <- sequence . zipWith3 from_unboxed prods cons
522 return . mkWildCase expr (reprType repr) res_ty
523 $ zipWith3 sum_alt (tyConDataCons tycon) vars bodies
525 sum_alt data_con var body = (DataAlt data_con, [var], body)
527 from_repr repr@(EnumRepr { enum_data_con = data_con }) expr
529 var <- newLocalVar (fsLit "n") intPrimTy
531 let res = mkWildCase (Var var) intPrimTy res_ty
532 $ (DEFAULT, [], error_expr)
533 : zipWith mk_alt (tyConDataCons vect_tc) cons
535 return $ mkWildCase expr (reprType repr) res_ty
536 [(DataAlt data_con, [var], res)]
538 mk_alt data_con con = (LitAlt (mkDataConTagLit data_con), [], con)
540 error_expr = mkRuntimeErrorApp rUNTIME_ERROR_ID res_ty
542 $ sep [text "Invalid NDP representation of", ppr vect_tc]
544 from_repr repr expr = from_unboxed repr con expr
546 from_unboxed prod@(ProdRepr { prod_components = tys
547 , prod_data_con = data_con })
551 vars <- mapM (newLocalVar (fsLit "y")) tys
552 return $ mkWildCase expr (reprType prod) res_ty
553 [(DataAlt data_con, vars, con `mkVarApps` vars)]
555 from_unboxed (IdRepr _) con expr
556 = return $ con `App` expr
558 from_unboxed (VoidRepr {}) con _
561 from_unboxed _ _ _ = panic "buildFromPRepr/from_unboxed"
563 buildToArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
564 buildToArrPRepr repr vect_tc prepr_tc arr_tc
566 arg_ty <- mkPArrayType el_ty
567 arg <- newLocalVar (fsLit "xs") arg_ty
569 res_ty <- mkPArrayType (reprType repr)
571 shape_vars <- arrShapeVars repr
572 repr_vars <- arrReprVars repr
574 parray_co <- mkBuiltinCo parrayTyCon
576 let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
577 co = mkAppCoercion parray_co
579 $ mkTyConApp repr_co var_tys
581 scrut = unwrapFamInstScrut arr_tc var_tys (Var arg)
583 result <- to_repr shape_vars repr_vars repr
587 $ mkWildCase scrut (mkTyConApp arr_tc var_tys) res_ty
588 [(DataAlt arr_dc, shape_vars ++ concat repr_vars, result)]
590 var_tys = mkTyVarTys $ tyConTyVars vect_tc
591 el_ty = mkTyConApp vect_tc var_tys
593 [arr_dc] = tyConDataCons arr_tc
595 to_repr shape_vars@(_ : _)
597 (SumRepr { sum_components = prods
598 , sum_arr_tycon = tycon
599 , sum_arr_data_con = data_con })
601 exprs <- zipWithM to_prod repr_vars prods
603 return . wrapFamInstBody tycon tys
605 $ map Type tys ++ map Var shape_vars ++ exprs
607 tys = map reprType prods
611 (ProdRepr { prod_components = tys
612 , prod_arr_tycon = tycon
613 , prod_arr_data_con = data_con })
614 = return . wrapFamInstBody tycon tys
616 $ map Type tys ++ map Var (len_var : repr_vars)
620 (EnumRepr { enum_arr_tycon = tycon
621 , enum_arr_data_con = data_con })
622 = return . wrapFamInstBody tycon []
626 to_repr _ _ _ = panic "buildToArrPRepr/to_repr"
628 to_prod repr_vars@(r : _)
629 (ProdRepr { prod_components = tys@(ty : _)
630 , prod_arr_tycon = tycon
631 , prod_arr_data_con = data_con })
633 len <- lengthPA ty (Var r)
634 return . wrapFamInstBody tycon tys
636 $ map Type tys ++ len : map Var repr_vars
638 to_prod [var] (IdRepr _) = return (Var var)
639 to_prod [var] (VoidRepr {}) = return (Var var)
640 to_prod _ _ = panic "buildToArrPRepr/to_prod"
643 buildFromArrPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
644 buildFromArrPRepr repr vect_tc prepr_tc arr_tc
646 arg_ty <- mkPArrayType =<< mkPReprType el_ty
647 arg <- newLocalVar (fsLit "xs") arg_ty
649 res_ty <- mkPArrayType el_ty
651 shape_vars <- arrShapeVars repr
652 repr_vars <- arrReprVars repr
654 parray_co <- mkBuiltinCo parrayTyCon
656 let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
657 co = mkAppCoercion parray_co
658 $ mkTyConApp repr_co var_tys
660 scrut = mkCoerce co (Var arg)
662 result = wrapFamInstBody arr_tc var_tys
664 $ map Type var_tys ++ map Var (shape_vars ++ concat repr_vars)
667 (from_repr repr scrut shape_vars repr_vars res_ty result)
669 var_tys = mkTyVarTys $ tyConTyVars vect_tc
670 el_ty = mkTyConApp vect_tc var_tys
672 [arr_dc] = tyConDataCons arr_tc
674 from_repr (SumRepr { sum_components = prods
675 , sum_arr_tycon = tycon
676 , sum_arr_data_con = data_con })
683 vars <- mapM (newLocalVar (fsLit "xs")) =<< mapM arrReprType prods
684 result <- go prods repr_vars vars body
686 let scrut = unwrapFamInstScrut tycon ty_args expr
687 return . mkWildCase scrut scrut_ty res_ty
688 $ [(DataAlt data_con, shape_vars ++ vars, result)]
690 ty_args = map reprType prods
691 scrut_ty = mkTyConApp tycon ty_args
693 go [] [] [] body = return body
694 go (prod : prods) (repr_vars : rss) (var : vars) body
696 shape_vars <- mapM (newLocalVar (fsLit "s")) =<< arrShapeTys prod
698 from_prod prod (Var var) shape_vars repr_vars res_ty
699 =<< go prods rss vars body
700 go _ _ _ _ = panic "buildFromArrPRepr/go"
702 from_repr repr expr shape_vars [repr_vars] res_ty body
703 = from_prod repr expr shape_vars repr_vars res_ty body
705 from_repr _ _ _ _ _ _ = panic "buildFromArrPRepr/from_repr"
707 from_prod (ProdRepr { prod_components = tys
708 , prod_arr_tycon = tycon
709 , prod_arr_data_con = data_con })
716 let scrut = unwrapFamInstScrut tycon tys expr
717 scrut_ty = mkTyConApp tycon tys
719 return $ mkWildCase scrut scrut_ty res_ty
720 [(DataAlt data_con, shape_vars ++ repr_vars, body)]
722 from_prod (EnumRepr { enum_arr_tycon = tycon
723 , enum_arr_data_con = data_con })
729 = let scrut = unwrapFamInstScrut tycon [] expr
730 scrut_ty = mkTyConApp tycon []
732 return $ mkWildCase scrut scrut_ty res_ty
733 [(DataAlt data_con, shape_vars, body)]
741 = return $ Let (NonRec repr_var expr) body
743 from_prod (VoidRepr {})
749 = return $ Let (NonRec repr_var expr) body
751 from_prod _ _ _ _ _ _ = panic "buildFromArrPRepr/from_prod"
753 buildPRDictRepr :: Repr -> VM CoreExpr
754 buildPRDictRepr (VoidRepr { void_tycon = tycon })
755 = prDFunOfTyCon tycon
756 buildPRDictRepr (IdRepr ty) = mkPR ty
757 buildPRDictRepr (ProdRepr {
758 prod_components = tys
763 dfun <- prDFunOfTyCon tycon
764 return $ dfun `mkTyApps` tys `mkApps` prs
766 buildPRDictRepr (SumRepr {
767 sum_components = prods
768 , sum_tycon = tycon })
770 prs <- mapM buildPRDictRepr prods
771 dfun <- prDFunOfTyCon tycon
772 return $ dfun `mkTyApps` map reprType prods `mkApps` prs
774 buildPRDictRepr (EnumRepr { enum_tycon = tycon })
775 = prDFunOfTyCon tycon
777 buildPRDict :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
778 buildPRDict repr vect_tc prepr_tc _
780 dict <- buildPRDictRepr repr
782 pr_co <- mkBuiltinCo prTyCon
783 let co = mkAppCoercion pr_co
785 $ mkTyConApp arg_co var_tys
787 return $ mkCoerce co dict
789 var_tys = mkTyVarTys $ tyConTyVars vect_tc
791 Just arg_co = tyConFamilyCoercion_maybe prepr_tc
793 buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
794 buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
796 name' <- cloneName mkPArrayTyConOcc orig_name
797 rhs <- buildPArrayTyConRhs orig_name vect_tc repr_tc
798 parray <- builtin parrayTyCon
800 liftDs $ buildAlgTyCon name'
802 [] -- no stupid theta
804 rec_flag -- FIXME: is this ok?
805 False -- FIXME: no generics
806 False -- not GADT syntax
807 (Just $ mk_fam_inst parray vect_tc)
809 orig_name = tyConName orig_tc
810 tyvars = tyConTyVars vect_tc
811 rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
814 buildPArrayTyConRhs :: Name -> TyCon -> TyCon -> VM AlgTyConRhs
815 buildPArrayTyConRhs orig_name vect_tc repr_tc
817 data_con <- buildPArrayDataCon orig_name vect_tc repr_tc
818 return $ DataTyCon { data_cons = [data_con], is_enum = False }
820 buildPArrayDataCon :: Name -> TyCon -> TyCon -> VM DataCon
821 buildPArrayDataCon orig_name vect_tc repr_tc
823 dc_name <- cloneName mkPArrayDataConOcc orig_name
824 repr <- mkRepr vect_tc
826 shape_tys <- arrShapeTys repr
827 repr_tys <- arrReprTys repr
829 let tys = shape_tys ++ repr_tys
830 tvs = tyConTyVars vect_tc
832 liftDs $ buildDataCon dc_name
834 (map (const NotMarkedStrict) tys)
835 [] -- no field labels
837 [] -- no existentials
841 (mkFamilyTyConApp repr_tc (mkTyVarTys tvs))
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