X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fvectorise%2FVectorise.hs;h=31defa540e02d2136abec4342ad1e9ca4711c9b1;hp=489d6cc4bf34b72230718df686d451b51fd829b2;hb=f0b92c4d4ff0584faa4dc8817f59dd5ddbda96a9;hpb=02cff9dfe0e5f6b9a92949ee988989e16d764f8b diff --git a/compiler/vectorise/Vectorise.hs b/compiler/vectorise/Vectorise.hs index 489d6cc..31defa5 100644 --- a/compiler/vectorise/Vectorise.hs +++ b/compiler/vectorise/Vectorise.hs @@ -25,11 +25,12 @@ import InstEnv ( extendInstEnvList ) import Var import VarEnv import VarSet -import Name ( mkSysTvName, getName ) +import Name ( Name, mkSysTvName, getName ) import NameEnv import Id import MkId ( unwrapFamInstScrut ) import OccName +import Module ( Module ) import DsMonad hiding (mapAndUnzipM) import DsUtils ( mkCoreTup, mkCoreTupTy ) @@ -42,7 +43,20 @@ import BasicTypes ( Boxity(..) ) import Outputable import FastString -import Control.Monad ( liftM, liftM2, mapAndUnzipM ) +import Control.Monad ( liftM, liftM2, zipWithM, mapAndUnzipM ) + +builtin_PAs :: [(Name, Module, FastString)] +builtin_PAs = [ + (closureTyConName, nDP_CLOSURE, FSLIT("dPA_Clo")) + , mk intTyConName FSLIT("dPA_Int") + ] + ++ tups + where + mk name fs = (name, nDP_INSTANCES, fs) + + tups = mk_tup 0 : map mk_tup [2..3] + mk_tup n = (getName $ tupleTyCon Boxed n, nDP_INSTANCES, + mkFastString $ "dPA_" ++ show n) vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts -> IO (SimplCount, ModGuts) @@ -60,20 +74,18 @@ vectorise hsc_env _ _ guts vectModule :: ModGuts -> VM ModGuts vectModule guts = do - (types', fam_insts, pa_insts) <- vectTypeEnv (mg_types guts) + defTyConBuiltinPAs builtin_PAs + (types', fam_insts, tc_binds) <- vectTypeEnv (mg_types guts) - let insts = map painstInstance pa_insts - fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts - inst_env' = extendInstEnvList (mg_inst_env guts) insts - updGEnv (setInstEnvs inst_env' fam_inst_env') + let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts + updGEnv (setFamInstEnv fam_inst_env') - dicts <- mapM buildPADict pa_insts - binds' <- mapM vectTopBind (mg_binds guts) + -- dicts <- mapM buildPADict pa_insts + -- workers <- mapM vectDataConWorkers pa_insts + binds' <- mapM vectTopBind (mg_binds guts) return $ guts { mg_types = types' - , mg_binds = Rec (concat dicts) : binds' - , mg_inst_env = inst_env' + , mg_binds = Rec tc_binds : binds' , mg_fam_inst_env = fam_inst_env' - , mg_insts = mg_insts guts ++ insts , mg_fam_insts = mg_fam_insts guts ++ fam_insts } @@ -81,7 +93,7 @@ vectTopBind :: CoreBind -> VM CoreBind vectTopBind b@(NonRec var expr) = do var' <- vectTopBinder var - expr' <- vectTopRhs expr + expr' <- vectTopRhs var expr hs <- takeHoisted return . Rec $ (var, expr) : (var', expr') : hs `orElseV` @@ -90,7 +102,7 @@ vectTopBind b@(NonRec var expr) vectTopBind b@(Rec bs) = do vars' <- mapM vectTopBinder vars - exprs' <- mapM vectTopRhs exprs + exprs' <- zipWithM vectTopRhs vars exprs hs <- takeHoisted return . Rec $ bs ++ zip vars' exprs' ++ hs `orElseV` @@ -101,15 +113,17 @@ vectTopBind b@(Rec bs) vectTopBinder :: Var -> VM Var vectTopBinder var = do - vty <- vectType (idType var) - name <- cloneName mkVectOcc (getName var) - let var' | isExportedId var = Id.mkExportedLocalId name vty - | otherwise = Id.mkLocalId name vty + vty <- vectType (idType var) + var' <- cloneId mkVectOcc var vty defGlobalVar var var' return var' -vectTopRhs :: CoreExpr -> VM CoreExpr -vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars +vectTopRhs :: Var -> CoreExpr -> VM CoreExpr +vectTopRhs var expr + = do + closedV . liftM vectorised + . inBind var + $ vectPolyExpr (freeVars expr) -- ---------------------------------------------------------------------------- -- Bindings @@ -134,6 +148,14 @@ vectBndrIn v p x <- p return (vv, x) +vectBndrIn' :: Var -> (VVar -> VM a) -> VM (VVar, a) +vectBndrIn' v p + = localV + $ do + vv <- vectBndr v + x <- p vv + return (vv, x) + vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a) vectBndrsIn vs p = localV @@ -145,30 +167,19 @@ vectBndrsIn vs p -- ---------------------------------------------------------------------------- -- Expressions -capply :: VExpr -> VExpr -> VM VExpr -capply (vfn, lfn) (varg, larg) - = do - apply <- builtin applyClosureVar - applyP <- builtin applyClosurePVar - return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg], - mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg]) - where - fn_ty = exprType vfn - (arg_ty, res_ty) = splitClosureTy fn_ty - -vectVar :: Var -> Var -> VM VExpr -vectVar lc v +vectVar :: Var -> VM VExpr +vectVar v = do r <- lookupVar v case r of Local (vv,lv) -> return (Var vv, Var lv) Global vv -> do let vexpr = Var vv - lexpr <- replicatePA vexpr (Var lc) + lexpr <- liftPA vexpr return (vexpr, lexpr) -vectPolyVar :: Var -> Var -> [Type] -> VM VExpr -vectPolyVar lc v tys +vectPolyVar :: Var -> [Type] -> VM VExpr +vectPolyVar v tys = do vtys <- mapM vectType tys r <- lookupVar v @@ -177,228 +188,143 @@ vectPolyVar lc v tys (polyApply (Var lv) vtys) Global poly -> do vexpr <- polyApply (Var poly) vtys - lexpr <- replicatePA vexpr (Var lc) + lexpr <- liftPA vexpr return (vexpr, lexpr) -vectLiteral :: Var -> Literal -> VM VExpr -vectLiteral lc lit +vectLiteral :: Literal -> VM VExpr +vectLiteral lit = do - lexpr <- replicatePA (Lit lit) (Var lc) + lexpr <- liftPA (Lit lit) return (Lit lit, lexpr) -vectPolyExpr :: Var -> CoreExprWithFVs -> VM VExpr -vectPolyExpr lc expr +vectPolyExpr :: CoreExprWithFVs -> VM VExpr +vectPolyExpr expr = polyAbstract tvs $ \abstract -> - -- FIXME: shadowing (tvs in lc) do - mono' <- vectExpr lc mono + mono' <- vectExpr mono return $ mapVect abstract mono' where (tvs, mono) = collectAnnTypeBinders expr -vectExpr :: Var -> CoreExprWithFVs -> VM VExpr -vectExpr lc (_, AnnType ty) +vectExpr :: CoreExprWithFVs -> VM VExpr +vectExpr (_, AnnType ty) = liftM vType (vectType ty) -vectExpr lc (_, AnnVar v) = vectVar lc v +vectExpr (_, AnnVar v) = vectVar v -vectExpr lc (_, AnnLit lit) = vectLiteral lc lit +vectExpr (_, AnnLit lit) = vectLiteral lit -vectExpr lc (_, AnnNote note expr) - = liftM (vNote note) (vectExpr lc expr) +vectExpr (_, AnnNote note expr) + = liftM (vNote note) (vectExpr expr) -vectExpr lc e@(_, AnnApp _ arg) +vectExpr e@(_, AnnApp _ arg) | isAnnTypeArg arg - = vectTyAppExpr lc fn tys + = vectTyAppExpr fn tys where (fn, tys) = collectAnnTypeArgs e -vectExpr lc (_, AnnApp fn arg) +vectExpr (_, AnnApp fn arg) = do - fn' <- vectExpr lc fn - arg' <- vectExpr lc arg - capply fn' arg' + fn' <- vectExpr fn + arg' <- vectExpr arg + mkClosureApp fn' arg' + +vectExpr (_, AnnCase scrut bndr ty alts) + | isAlgType scrut_ty + = vectAlgCase scrut bndr ty alts + where + scrut_ty = exprType (deAnnotate scrut) -vectExpr lc (_, AnnCase expr bndr ty alts) +vectExpr (_, AnnCase expr bndr ty alts) = panic "vectExpr: case" -vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body) +vectExpr (_, AnnLet (AnnNonRec bndr rhs) body) = do - vrhs <- vectPolyExpr lc rhs - (vbndr, vbody) <- vectBndrIn bndr (vectExpr lc body) + vrhs <- localV . inBind bndr $ vectPolyExpr rhs + (vbndr, vbody) <- vectBndrIn bndr (vectExpr body) return $ vLet (vNonRec vbndr vrhs) vbody -vectExpr lc (_, AnnLet (AnnRec bs) body) +vectExpr (_, AnnLet (AnnRec bs) body) = do (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs $ liftM2 (,) - (mapM (vectExpr lc) rhss) - (vectPolyExpr lc body) + (zipWithM vect_rhs bndrs rhss) + (vectPolyExpr body) return $ vLet (vRec vbndrs vrhss) vbody where (bndrs, rhss) = unzip bs -vectExpr lc e@(_, AnnLam bndr body) - | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e) + vect_rhs bndr rhs = localV + . inBind bndr + $ vectExpr rhs + +vectExpr e@(fvs, AnnLam bndr _) + | not (isId bndr) = pprPanic "vectExpr" (ppr $ deAnnotate e) + | otherwise = vectLam fvs bs body + where + (bs,body) = collectAnnValBinders e -vectExpr lc (fvs, AnnLam bndr body) +vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr +vectLam fvs bs body = do tyvars <- localTyVars - info <- mkCEnvInfo fvs bndr body - (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body - - vfn_var <- hoistExpr FSLIT("vfn") poly_vfn - lfn_var <- hoistExpr FSLIT("lfn") poly_lfn - - let (venv, lenv) = mkClosureEnvs info (Var lc) - - let env_ty = cenv_vty info - - pa_dict <- paDictOfType env_ty - - arg_ty <- vectType (varType bndr) - res_ty <- vectType (exprType $ deAnnotate body) - - -- FIXME: move the functions to the top level - mono_vfn <- polyApply (Var vfn_var) (mkTyVarTys tyvars) - mono_lfn <- polyApply (Var lfn_var) (mkTyVarTys tyvars) - - mk_clo <- builtin mkClosureVar - mk_cloP <- builtin mkClosurePVar - - let vclo = Var mk_clo `mkTyApps` [arg_ty, res_ty, env_ty] - `mkApps` [pa_dict, mono_vfn, mono_lfn, venv] - - lclo = Var mk_cloP `mkTyApps` [arg_ty, res_ty, env_ty] - `mkApps` [pa_dict, mono_vfn, mono_lfn, lenv] - - return (vclo, lclo) - -data CEnvInfo = CEnvInfo { - cenv_vars :: [Var] - , cenv_values :: [(CoreExpr, CoreExpr)] - , cenv_vty :: Type - , cenv_lty :: Type - , cenv_repr_tycon :: TyCon - , cenv_repr_tyargs :: [Type] - , cenv_repr_datacon :: DataCon - } - -mkCEnvInfo :: VarSet -> Var -> CoreExprWithFVs -> VM CEnvInfo -mkCEnvInfo fvs arg body + (vs, vvs) <- readLEnv $ \env -> + unzip [(var, vv) | var <- varSetElems fvs + , Just vv <- [lookupVarEnv (local_vars env) var]] + + arg_tys <- mapM (vectType . idType) bs + res_ty <- vectType (exprType $ deAnnotate body) + + buildClosures tyvars vvs arg_tys res_ty + . hoistPolyVExpr tyvars + $ do + lc <- builtin liftingContext + (vbndrs, vbody) <- vectBndrsIn (vs ++ bs) + (vectExpr body) + return $ vLams lc vbndrs vbody + +vectTyAppExpr :: CoreExprWithFVs -> [Type] -> VM VExpr +vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys +vectTyAppExpr e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e) + +type CoreAltWithFVs = AnnAlt Id VarSet + +-- We convert +-- +-- case e :: t of v { ... } +-- +-- to +-- +-- V: let v = e in case v of _ { ... } +-- L: let v = e in case v `cast` ... of _ { ... } +-- +-- When lifting, we have to do it this way because v must have the type +-- [:V(T):] but the scrutinee must be cast to the representation type. +-- + +-- FIXME: this is too lazy +vectAlgCase scrut bndr ty [(DEFAULT, [], body)] = do - locals <- readLEnv local_vars - let - (vars, vals) = unzip - [(var, (Var v, Var v')) | var <- varSetElems fvs - , Just (v,v') <- [lookupVarEnv locals var]] - vtys <- mapM (vectType . varType) vars - - (vty, repr_tycon, repr_tyargs, repr_datacon) <- mk_env_ty vtys - lty <- mkPArrayType vty - - return $ CEnvInfo { - cenv_vars = vars - , cenv_values = vals - , cenv_vty = vty - , cenv_lty = lty - , cenv_repr_tycon = repr_tycon - , cenv_repr_tyargs = repr_tyargs - , cenv_repr_datacon = repr_datacon - } - where - mk_env_ty [vty] - = return (vty, error "absent cinfo_repr_tycon" - , error "absent cinfo_repr_tyargs" - , error "absent cinfo_repr_datacon") - - mk_env_ty vtys - = do - let ty = mkCoreTupTy vtys - (repr_tc, repr_tyargs) <- lookupPArrayFamInst ty - let [repr_con] = tyConDataCons repr_tc - return (ty, repr_tc, repr_tyargs, repr_con) + vscrut <- vectExpr scrut + vty <- vectType ty + lty <- mkPArrayType vty + (vbndr, vbody) <- vectBndrIn bndr (vectExpr body) + return $ vCaseDEFAULT vscrut vbndr vty lty vbody - - -mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr) -mkClosureEnvs info lc - | [] <- vals - = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info)) - [lc, Var unitDataConId]) - - | [(vval, lval)] <- vals - = (vval, lval) - - | otherwise - = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info) - `mkTyApps` cenv_repr_tyargs info - `mkApps` (lc : lvals)) - - where - vals = cenv_values info - (vvals, lvals) = unzip vals - -mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs - -> VM (CoreExpr, CoreExpr) -mkClosureFns info tyvars arg body - = closedV - . polyAbstract tyvars - $ \mk_tlams -> - do - (vfn, lfn) <- mkClosureMonoFns info arg body - return (mk_tlams vfn, mk_tlams lfn) - -mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr) -mkClosureMonoFns info arg body +vectAlgCase scrut bndr ty [(DataAlt dc, bndrs, body)] = do - lc_bndr <- newLocalVar FSLIT("lc") intPrimTy - (bndrs, (vbody, lbody)) - <- vectBndrsIn (arg : cenv_vars info) - (vectExpr lc_bndr body) - let (varg : vbndrs, larg : lbndrs) = unzip bndrs - - venv_bndr <- newLocalVar FSLIT("env") vty - lenv_bndr <- newLocalVar FSLIT("env") lty - - let vcase = bind_venv (Var venv_bndr) vbody vbndrs - lcase <- bind_lenv (Var lenv_bndr) lbody lc_bndr lbndrs - return (mkLams [venv_bndr, varg] vcase, mkLams [lenv_bndr, larg] lcase) - where - vty = cenv_vty info - lty = cenv_lty info - - arity = length (cenv_vars info) - - bind_venv venv vbody [] = vbody - bind_venv venv vbody [vbndr] = Let (NonRec vbndr venv) vbody - bind_venv venv vbody vbndrs - = Case venv (mkWildId vty) (exprType vbody) - [(DataAlt (tupleCon Boxed arity), vbndrs, vbody)] - - bind_lenv lenv lbody lc_bndr [lbndr] - = do - len <- lengthPA (Var lbndr) - return . Let (NonRec lbndr lenv) - $ Case len - lc_bndr - (exprType lbody) - [(DEFAULT, [], lbody)] - - bind_lenv lenv lbody lc_bndr lbndrs - = let scrut = unwrapFamInstScrut (cenv_repr_tycon info) - (cenv_repr_tyargs info) - lenv - lbndrs' | null lbndrs = [mkWildId unitTy] - | otherwise = lbndrs - in - return - $ Case scrut - (mkWildId (exprType scrut)) - (exprType lbody) - [(DataAlt (cenv_repr_datacon info), lc_bndr : lbndrs', lbody)] - -vectTyAppExpr :: Var -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr) -vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys -vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e) - + vty <- vectType ty + lty <- mkPArrayType vty + vexpr <- vectExpr scrut + (vbndr, (vbndrs, vbody)) <- vectBndrIn bndr + . vectBndrsIn bndrs + $ vectExpr body + + (vscrut, arr_tc, arg_tys) <- mkVScrut (vVar vbndr) + vect_dc <- maybeV (lookupDataCon dc) + let [arr_dc] = tyConDataCons arr_tc + let shape_tys = take (dataConRepArity arr_dc - length bndrs) + (dataConRepArgTys arr_dc) + shape_bndrs <- mapM (newLocalVar FSLIT("s")) shape_tys + return . vLet (vNonRec vbndr vexpr) + $ vCaseProd vscrut vty lty vect_dc arr_dc shape_bndrs vbndrs vbody