X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fvectorise%2FVectType.hs;h=69a93f8ad8a042ce028b6c35c877006892d3296c;hb=86193bcfc847f1a1f844508224489456f08d6b83;hp=08a8067561d40040c0141b6849eb38a1071ada59;hpb=020f85464387244a063acad967e88132ba715982;p=ghc-hetmet.git diff --git a/compiler/vectorise/VectType.hs b/compiler/vectorise/VectType.hs index 08a8067..69a93f8 100644 --- a/compiler/vectorise/VectType.hs +++ b/compiler/vectorise/VectType.hs @@ -1,4 +1,5 @@ -module VectType ( vectTyCon, vectType, vectTypeEnv ) +module VectType ( vectTyCon, vectType, vectTypeEnv, + PAInstance, painstInstance, buildPADict ) where #include "HsVersions.h" @@ -8,18 +9,20 @@ import VectUtils import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons ) import CoreSyn +import CoreUtils import DataCon import TyCon import Type import TypeRep import Coercion import FamInstEnv ( FamInst, mkLocalFamInst ) -import InstEnv ( Instance ) +import InstEnv ( Instance, mkLocalInstance, instanceDFunId ) import OccName import MkId -import BasicTypes ( StrictnessMark(..), boolToRecFlag ) +import BasicTypes ( StrictnessMark(..), OverlapFlag(..), boolToRecFlag ) +import Var ( Var ) import Id ( mkWildId ) -import Name ( Name ) +import Name ( Name, getOccName ) import NameEnv import TysWiredIn ( intTy, intDataCon ) import TysPrim ( intPrimTy ) @@ -72,7 +75,13 @@ vectType ty = pprPanic "vectType:" (ppr ty) type TyConGroup = ([TyCon], UniqSet TyCon) -vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [Instance]) +data PAInstance = PAInstance { + painstInstance :: Instance + , painstVectTyCon :: TyCon + , painstArrTyCon :: TyCon + } + +vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [PAInstance]) vectTypeEnv env = do cs <- readGEnv $ mk_map . global_tycons @@ -80,17 +89,22 @@ vectTypeEnv env keep_dcs = concatMap tyConDataCons keep_tcs zipWithM_ defTyCon keep_tcs keep_tcs zipWithM_ defDataCon keep_dcs keep_dcs - vect_tcs <- vectTyConDecls conv_tcs - parr_tcs1 <- zipWithM buildPArrayTyCon keep_tcs keep_tcs - parr_tcs2 <- zipWithM buildPArrayTyCon conv_tcs vect_tcs - let new_tcs = vect_tcs ++ parr_tcs1 ++ parr_tcs2 + new_tcs <- vectTyConDecls conv_tcs + + let orig_tcs = keep_tcs ++ conv_tcs + vect_tcs = keep_tcs ++ new_tcs + + parr_tcs <- zipWithM buildPArrayTyCon orig_tcs vect_tcs + pa_insts <- zipWithM buildPAInstance vect_tcs parr_tcs + + let all_new_tcs = new_tcs ++ parr_tcs let new_env = extendTypeEnvList env - (map ATyCon new_tcs - ++ [ADataCon dc | tc <- new_tcs + (map ATyCon all_new_tcs + ++ [ADataCon dc | tc <- all_new_tcs , dc <- tyConDataCons tc]) - return (new_env, map mkLocalFamInst (parr_tcs1 ++ parr_tcs2), []) + return (new_env, map mkLocalFamInst parr_tcs, pa_insts) where tycons = typeEnvTyCons env groups = tyConGroups tycons @@ -177,6 +191,35 @@ vectDataCon dc 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 @@ -229,7 +272,7 @@ buildPArrayDataCon :: Name -> TyCon -> TyCon -> VM DataCon 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 @@ -237,13 +280,13 @@ buildPArrayDataCon orig_name vect_tc repr_tc 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 @@ -253,20 +296,75 @@ buildPArrayDataCon orig_name vect_tc repr_tc types = [ty | dc <- tyConDataCons vect_tc , ty <- dataConRepArgTys dc] -buildLengthPA :: TyCon -> VM CoreExpr -buildLengthPA repr_tc +buildPAInstance :: TyCon -> TyCon -> VM PAInstance +buildPAInstance vect_tc arr_tc = do - arg <- newLocalVar FSLIT("xs") arg_ty - shape <- newLocalVar FSLIT("sel") shape_ty - body <- lengthPA (Var shape) - return . Lam arg - $ Case (Var arg) (mkWildId arg_ty) intPrimTy - [(DataAlt repr_dc, shape : map mkWildId repr_tys, body)] + pa <- builtin paClass + let inst_ty = mkForAllTys tvs + . (mkFunTys $ mkPredTys [ClassP pa [ty] | ty <- arg_tys]) + $ mkPredTy (ClassP pa [mkTyConApp vect_tc arg_tys]) + + dfun <- newExportedVar (mkPADFunOcc $ getOccName vect_tc) inst_ty + + return $ PAInstance { + painstInstance = mkLocalInstance dfun NoOverlap + , painstVectTyCon = vect_tc + , painstArrTyCon = arr_tc + } where - arg_ty = mkTyConApp repr_tc . mkTyVarTys $ tyConTyVars repr_tc - [repr_dc] = tyConDataCons repr_tc - shape_ty : repr_tys = dataConRepArgTys repr_dc + tvs = tyConTyVars arr_tc + arg_tys = mkTyVarTys tvs + +buildPADict :: PAInstance -> VM [(Var, CoreExpr)] +buildPADict (PAInstance { + painstInstance = inst + , painstVectTyCon = vect_tc + , painstArrTyCon = arr_tc }) + = polyAbstract (tyConTyVars arr_tc) $ \abstract -> + do + 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, mkInlineMe $ abstract body)] + where + tvs = tyConTyVars arr_tc + arg_tys = mkTyVarTys tvs + + mk_method shape (name, build) + = localV + $ do + body <- build shape vect_tc arr_tc + var <- newLocalVar name (exprType body) + return (var, mkInlineMe body) + +paMethods = [(FSLIT("lengthPA"), buildLengthPA), + (FSLIT("replicatePA"), buildReplicatePA)] + +buildLengthPA :: Shape -> TyCon -> TyCon -> VM CoreExpr +buildLengthPA shape vect_tc arr_tc + = do + 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 scrut (mkWildId scrut_ty) intPrimTy + [(DataAlt repr_dc, shapes ++ wilds, body)] + where + arg_tys = mkTyVarTys $ tyConTyVars arr_tc + [repr_dc] = tyConDataCons arr_tc + + shape_tys = shapeReprTys shape + repr_tys = drop (length shape_tys) (dataConRepArgTys repr_dc) -- data T = C0 t1 ... tm -- ... @@ -295,8 +393,8 @@ buildLengthPA repr_tc -- -- -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 @@ -304,14 +402,16 @@ buildReplicatePA vect_tc arr_tc 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 @@ -334,7 +434,7 @@ buildReplicatePA vect_tc 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