rep_arg_tys = dataConRepArgTys dc
tycon = dataConTyCon dc
+data Shape = Shape {
+ shapeReprTys :: [Type]
+ , shapeStrictness :: [StrictnessMark]
+ , shapeLength :: [CoreExpr] -> VM CoreExpr
+ , shapeReplicate :: CoreExpr -> CoreExpr -> VM [CoreExpr]
+ }
+
+tyConShape :: TyCon -> VM Shape
+tyConShape vect_tc
+ | isProductTyCon vect_tc
+ = return $ Shape {
+ shapeReprTys = [intPrimTy]
+ , shapeStrictness = [NotMarkedStrict]
+ , shapeLength = \[len] -> return len
+ , shapeReplicate = \len _ -> return [len]
+ }
+
+ | otherwise
+ = do
+ repr_ty <- mkPArrayType intTy -- FIXME: we want to unbox this
+ return $ Shape {
+ shapeReprTys = [repr_ty]
+ , shapeStrictness = [MarkedStrict]
+ , shapeLength = \[sel] -> lengthPA sel
+ , shapeReplicate = \len n -> do
+ e <- replicatePA len n
+ return [e]
+ }
+
buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
do
buildPArrayDataCon orig_name vect_tc repr_tc
= do
dc_name <- cloneName mkPArrayDataConOcc orig_name
- shape_ty <- mkPArrayType intTy -- FIXME: we want to unbox this!
+ shape <- tyConShape vect_tc
repr_tys <- mapM mkPArrayType types
wrk_name <- cloneName mkDataConWorkerOcc dc_name
wrp_name <- cloneName mkDataConWrapperOcc dc_name
let ids = mkDataConIds wrp_name wrk_name data_con
data_con = mkDataCon dc_name
False
- (MarkedStrict : map (const NotMarkedStrict) repr_tys)
+ (shapeStrictness shape ++ map (const NotMarkedStrict) repr_tys)
[]
(tyConTyVars vect_tc)
[]
[]
[]
- (shape_ty : repr_tys)
+ (shapeReprTys shape ++ repr_tys)
repr_tc
[]
ids
painstInstance = inst
, painstVectTyCon = vect_tc
, painstArrTyCon = arr_tc })
- = localV . abstractOverTyVars (tyConTyVars arr_tc) $ \abstract ->
+ = polyAbstract (tyConTyVars arr_tc) $ \abstract ->
do
- meth_binds <- mapM mk_method paMethods
+ shape <- tyConShape vect_tc
+ meth_binds <- mapM (mk_method shape) paMethods
let meth_exprs = map (Var . fst) meth_binds
pa_dc <- builtin paDictDataCon
let dict = mkConApp pa_dc (Type (mkTyConApp vect_tc arg_tys) : meth_exprs)
body = Let (Rec meth_binds) dict
- return [(instanceDFunId inst, abstract body)]
+ return [(instanceDFunId inst, mkInlineMe $ abstract body)]
where
tvs = tyConTyVars arr_tc
arg_tys = mkTyVarTys tvs
- mk_method (name, build)
+ mk_method shape (name, build)
= localV
$ do
- body <- build vect_tc arr_tc
+ body <- build shape vect_tc arr_tc
var <- newLocalVar name (exprType body)
return (var, mkInlineMe body)
paMethods = [(FSLIT("lengthPA"), buildLengthPA),
(FSLIT("replicatePA"), buildReplicatePA)]
-buildLengthPA :: TyCon -> TyCon -> VM CoreExpr
-buildLengthPA _ arr_tc
+buildLengthPA :: Shape -> TyCon -> TyCon -> VM CoreExpr
+buildLengthPA shape vect_tc arr_tc
= do
- arg <- newLocalVar FSLIT("xs") arg_ty
- shape <- newLocalVar FSLIT("sel") shape_ty
- body <- lengthPA (Var shape)
+ parr_ty <- mkPArrayType (mkTyConApp vect_tc arg_tys)
+ arg <- newLocalVar FSLIT("xs") parr_ty
+ shapes <- mapM (newLocalVar FSLIT("sh")) shape_tys
+ wilds <- mapM newDummyVar repr_tys
+ let scrut = unwrapFamInstScrut arr_tc arg_tys (Var arg)
+ scrut_ty = exprType scrut
+
+ body <- shapeLength shape (map Var shapes)
+
return . Lam arg
- $ Case (Var arg) (mkWildId arg_ty) intPrimTy
- [(DataAlt repr_dc, shape : map mkWildId repr_tys, body)]
+ $ Case scrut (mkWildId scrut_ty) intPrimTy
+ [(DataAlt repr_dc, shapes ++ wilds, body)]
where
- arg_ty = mkTyConApp arr_tc . mkTyVarTys $ tyConTyVars arr_tc
+ arg_tys = mkTyVarTys $ tyConTyVars arr_tc
[repr_dc] = tyConDataCons arr_tc
- shape_ty : repr_tys = dataConRepArgTys repr_dc
-
+
+ shape_tys = shapeReprTys shape
+ repr_tys = drop (length shape_tys) (dataConRepArgTys repr_dc)
-- data T = C0 t1 ... tm
-- ...
--
--
-buildReplicatePA :: TyCon -> TyCon -> VM CoreExpr
-buildReplicatePA vect_tc arr_tc
+buildReplicatePA :: Shape -> TyCon -> TyCon -> VM CoreExpr
+buildReplicatePA shape vect_tc arr_tc
= do
len_var <- newLocalVar FSLIT("n") intPrimTy
val_var <- newLocalVar FSLIT("x") val_ty
let len = Var len_var
val = Var val_var
- shape <- replicatePA len (ctr_num val)
+ shape_reprs <- shapeReplicate shape len (ctr_num val)
reprs <- liftM concat $ mapM (mk_comp_arrs len val) vect_dcs
-
+
return . mkLams [len_var, val_var]
- $ mkConApp arr_dc (map (Type . TyVarTy) (tyConTyVars arr_tc) ++ (shape : reprs))
+ . wrapFamInstBody arr_tc arg_tys
+ $ mkConApp arr_dc (map Type arg_tys ++ shape_reprs ++ reprs)
where
- val_ty = mkTyConApp vect_tc . mkTyVarTys $ tyConTyVars arr_tc
- wild = mkWildId val_ty
+ arg_tys = mkTyVarTys (tyConTyVars arr_tc)
+ val_ty = mkTyConApp vect_tc arg_tys
+ wild = mkWildId val_ty
vect_dcs = tyConDataCons vect_tc
[arr_dc] = tyConDataCons arr_tc
arr_ty <- mkPArrayType ty
return $ Case val wild arr_ty
- [(DataAlt dc, pre ++ (var : post), rep), (DEFAULT, [], empty)]
+ [(DEFAULT, [], empty), (DataAlt dc, pre ++ (var : post), rep)]
-- | 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