X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fvectorise%2FVectorise.hs;h=85f4e4612ae160320170206aeb6cca3606fae93c;hp=720019b102b73b171f97a7a58c7df08878c6ed89;hb=21d9b432b676af304dff8d7f4e1e31e1678bcae3;hpb=d9049898e07e957bd5c24fb4a0257709b8186959 diff --git a/compiler/vectorise/Vectorise.hs b/compiler/vectorise/Vectorise.hs index 720019b..85f4e46 100644 --- a/compiler/vectorise/Vectorise.hs +++ b/compiler/vectorise/Vectorise.hs @@ -3,13 +3,314 @@ where #include "HsVersions.h" +import VectMonad +import VectUtils +import VectType +import VectCore + import DynFlags import HscTypes -vectorise :: HscEnv -> ModGuts -> IO ModGuts -vectorise hsc_env guts - | not (Opt_Vectorise `dopt` dflags) = return guts - | otherwise = return guts +import CoreLint ( showPass, endPass ) +import CoreSyn +import CoreUtils +import CoreFVs +import SimplMonad ( SimplCount, zeroSimplCount ) +import Rules ( RuleBase ) +import DataCon +import TyCon +import Type +import FamInstEnv ( extendFamInstEnvList ) +import InstEnv ( extendInstEnvList ) +import Var +import VarEnv +import VarSet +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 ) + +import Literal ( Literal ) +import PrelNames +import TysWiredIn +import TysPrim ( intPrimTy ) +import BasicTypes ( Boxity(..) ) + +import Outputable +import FastString +import Control.Monad ( liftM, liftM2, zipWithM, mapAndUnzipM ) + +vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts + -> IO (SimplCount, ModGuts) +vectorise hsc_env _ _ guts + = do + showPass dflags "Vectorisation" + eps <- hscEPS hsc_env + let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps + Just (info', guts') <- initV hsc_env guts info (vectModule guts) + endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts') + return (zeroSimplCount dflags, guts' { mg_vect_info = info' }) where dflags = hsc_dflags hsc_env +vectModule :: ModGuts -> VM ModGuts +vectModule guts + = do + (types', fam_insts, tc_binds) <- vectTypeEnv (mg_types guts) + + let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts + updGEnv (setFamInstEnv fam_inst_env') + + -- dicts <- mapM buildPADict pa_insts + -- workers <- mapM vectDataConWorkers pa_insts + binds' <- mapM vectTopBind (mg_binds guts) + return $ guts { mg_types = types' + , mg_binds = Rec tc_binds : binds' + , mg_fam_inst_env = fam_inst_env' + , mg_fam_insts = mg_fam_insts guts ++ fam_insts + } + +vectTopBind :: CoreBind -> VM CoreBind +vectTopBind b@(NonRec var expr) + = do + var' <- vectTopBinder var + expr' <- vectTopRhs var expr + hs <- takeHoisted + return . Rec $ (var, expr) : (var', expr') : hs + `orElseV` + return b + +vectTopBind b@(Rec bs) + = do + vars' <- mapM vectTopBinder vars + exprs' <- zipWithM vectTopRhs vars exprs + hs <- takeHoisted + return . Rec $ bs ++ zip vars' exprs' ++ hs + `orElseV` + return b + where + (vars, exprs) = unzip bs + +vectTopBinder :: Var -> VM Var +vectTopBinder var + = do + vty <- vectType (idType var) + var' <- cloneId mkVectOcc var vty + defGlobalVar var var' + return var' + +vectTopRhs :: Var -> CoreExpr -> VM CoreExpr +vectTopRhs var expr + = do + closedV . liftM vectorised + . inBind var + $ vectPolyExpr (freeVars expr) + +-- ---------------------------------------------------------------------------- +-- Bindings + +vectBndr :: Var -> VM VVar +vectBndr v + = do + vty <- vectType (idType v) + lty <- mkPArrayType vty + let vv = v `Id.setIdType` vty + lv = v `Id.setIdType` lty + updLEnv (mapTo vv lv) + return (vv, lv) + where + mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (vv, lv) } + +vectBndrIn :: Var -> VM a -> VM (VVar, a) +vectBndrIn v p + = localV + $ do + vv <- vectBndr v + 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 + $ do + vvs <- mapM vectBndr vs + x <- p + return (vvs, x) + +-- ---------------------------------------------------------------------------- +-- Expressions + +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 <- liftPA vexpr + return (vexpr, lexpr) + +vectPolyVar :: Var -> [Type] -> VM VExpr +vectPolyVar v tys + = do + vtys <- mapM vectType tys + r <- lookupVar v + case r of + Local (vv, lv) -> liftM2 (,) (polyApply (Var vv) vtys) + (polyApply (Var lv) vtys) + Global poly -> do + vexpr <- polyApply (Var poly) vtys + lexpr <- liftPA vexpr + return (vexpr, lexpr) + +vectLiteral :: Literal -> VM VExpr +vectLiteral lit + = do + lexpr <- liftPA (Lit lit) + return (Lit lit, lexpr) + +vectPolyExpr :: CoreExprWithFVs -> VM VExpr +vectPolyExpr expr + = polyAbstract tvs $ \abstract -> + do + mono' <- vectExpr mono + return $ mapVect abstract mono' + where + (tvs, mono) = collectAnnTypeBinders expr + +vectExpr :: CoreExprWithFVs -> VM VExpr +vectExpr (_, AnnType ty) + = liftM vType (vectType ty) + +vectExpr (_, AnnVar v) = vectVar v + +vectExpr (_, AnnLit lit) = vectLiteral lit + +vectExpr (_, AnnNote note expr) + = liftM (vNote note) (vectExpr expr) + +vectExpr e@(_, AnnApp _ arg) + | isAnnTypeArg arg + = vectTyAppExpr fn tys + where + (fn, tys) = collectAnnTypeArgs e + +vectExpr (_, AnnApp fn arg) + = do + 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 (_, AnnCase expr bndr ty alts) + = panic "vectExpr: case" + +vectExpr (_, AnnLet (AnnNonRec bndr rhs) body) + = do + vrhs <- localV . inBind bndr $ vectPolyExpr rhs + (vbndr, vbody) <- vectBndrIn bndr (vectExpr body) + return $ vLet (vNonRec vbndr vrhs) vbody + +vectExpr (_, AnnLet (AnnRec bs) body) + = do + (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs + $ liftM2 (,) + (zipWithM vect_rhs bndrs rhss) + (vectPolyExpr body) + return $ vLet (vRec vbndrs vrhss) vbody + where + (bndrs, rhss) = unzip bs + + 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 + +vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr +vectLam fvs bs body + = do + tyvars <- localTyVars + (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 + vscrut <- vectExpr scrut + vty <- vectType ty + lty <- mkPArrayType vty + (vbndr, vbody) <- vectBndrIn bndr (vectExpr body) + return $ vCaseDEFAULT vscrut vbndr vty lty vbody + +vectAlgCase scrut bndr ty [(DataAlt dc, bndrs, body)] + = do + 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