X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fvectorise%2FVectMonad.hs;h=ed18f1f7a93d648ba9079832b5e31e81879a05eb;hb=ea81010210486aa7b8b3ef36c65f794a33dbfefe;hp=46204b06bbce83c93b22d3a275adee7de21e8b80;hpb=621bc50eeb52dad05750d77581c4829e37424741;p=ghc-hetmet.git diff --git a/compiler/vectorise/VectMonad.hs b/compiler/vectorise/VectMonad.hs index 46204b0..ed18f1f 100644 --- a/compiler/vectorise/VectMonad.hs +++ b/compiler/vectorise/VectMonad.hs @@ -1,80 +1,105 @@ module VectMonad ( + Scope(..), VM, - noV, tryV, maybeV, orElseV, localV, initV, - newLocalVar, newTyVar, + noV, tryV, maybeV, orElseV, fixV, localV, closedV, initV, + cloneName, newLocalVar, newTyVar, - Builtins(..), + Builtins(..), paDictTyCon, paDictDataCon, builtin, GlobalEnv(..), + setInstEnvs, readGEnv, setGEnv, updGEnv, LocalEnv(..), readLEnv, setLEnv, updLEnv, - lookupTyCon, extendTyVarPA + lookupVar, defGlobalVar, + lookupTyCon, defTyCon, + lookupDataCon, defDataCon, + lookupTyVarPA, defLocalTyVar, defLocalTyVarWithPA, localTyVars, + + lookupInst, lookupFamInst ) where #include "HsVersions.h" import HscTypes import CoreSyn +import Class import TyCon +import DataCon import Type import Var import VarEnv import Id +import OccName import Name import NameEnv import DsMonad import PrelNames +import InstEnv +import FamInstEnv + +import Panic +import Outputable import FastString +import Control.Monad ( liftM ) + +data Scope a b = Global a | Local b + -- ---------------------------------------------------------------------------- -- Vectorisation monad data Builtins = Builtins { parrayTyCon :: TyCon - , paTyCon :: TyCon + , paClass :: Class , closureTyCon :: TyCon , mkClosureVar :: Var , applyClosureVar :: Var , mkClosurePVar :: Var , applyClosurePVar :: Var - , closurePAVar :: Var , lengthPAVar :: Var , replicatePAVar :: Var + , emptyPAVar :: Var } +paDictTyCon :: Builtins -> TyCon +paDictTyCon = classTyCon . paClass + +paDictDataCon :: Builtins -> DataCon +paDictDataCon = classDataCon . paClass + initBuiltins :: DsM Builtins initBuiltins = do parrayTyCon <- dsLookupTyCon parrayTyConName - paTyCon <- dsLookupTyCon paTyConName + paClass <- dsLookupClass paClassName closureTyCon <- dsLookupTyCon closureTyConName mkClosureVar <- dsLookupGlobalId mkClosureName applyClosureVar <- dsLookupGlobalId applyClosureName mkClosurePVar <- dsLookupGlobalId mkClosurePName applyClosurePVar <- dsLookupGlobalId applyClosurePName - closurePAVar <- dsLookupGlobalId closurePAName lengthPAVar <- dsLookupGlobalId lengthPAName replicatePAVar <- dsLookupGlobalId replicatePAName + emptyPAVar <- dsLookupGlobalId emptyPAName return $ Builtins { parrayTyCon = parrayTyCon - , paTyCon = paTyCon + , paClass = paClass , closureTyCon = closureTyCon , mkClosureVar = mkClosureVar , applyClosureVar = applyClosureVar , mkClosurePVar = mkClosurePVar , applyClosurePVar = applyClosurePVar - , closurePAVar = closurePAVar , lengthPAVar = lengthPAVar , replicatePAVar = replicatePAVar + , emptyPAVar = emptyPAVar } data GlobalEnv = GlobalEnv { @@ -92,9 +117,22 @@ data GlobalEnv = GlobalEnv { -- , global_tycons :: NameEnv TyCon - -- Mapping from TyCons to their PA dictionaries + -- Mapping from DataCons to their vectorised versions -- - , global_tycon_pa :: NameEnv CoreExpr + , global_datacons :: NameEnv DataCon + + -- External package inst-env & home-package inst-env for class + -- instances + -- + , global_inst_env :: (InstEnv, InstEnv) + + -- External package inst-env & home-package inst-env for family + -- instances + -- + , global_fam_inst_env :: FamInstEnvs + + -- Hoisted bindings + , global_bindings :: [(Var, CoreExpr)] } data LocalEnv = LocalEnv { @@ -103,22 +141,39 @@ data LocalEnv = LocalEnv { -- local_vars :: VarEnv (CoreExpr, CoreExpr) + -- In-scope type variables + -- + , local_tyvars :: [TyVar] + -- Mapping from tyvars to their PA dictionaries , local_tyvar_pa :: VarEnv CoreExpr } -initGlobalEnv :: VectInfo -> GlobalEnv -initGlobalEnv info +initGlobalEnv :: VectInfo -> (InstEnv, InstEnv) -> FamInstEnvs -> Builtins -> GlobalEnv +initGlobalEnv info instEnvs famInstEnvs bi = GlobalEnv { - global_vars = mapVarEnv (Var . snd) $ vectInfoCCVar info + global_vars = mapVarEnv (Var . snd) $ vectInfoVar info , global_exported_vars = emptyVarEnv - , global_tycons = mapNameEnv snd $ vectInfoCCTyCon info - , global_tycon_pa = emptyNameEnv + , global_tycons = extendNameEnv (mapNameEnv snd (vectInfoTyCon info)) + (tyConName funTyCon) (closureTyCon bi) + + , global_datacons = mapNameEnv snd $ vectInfoDataCon info + , global_inst_env = instEnvs + , global_fam_inst_env = famInstEnvs + , global_bindings = [] } +setInstEnvs :: InstEnv -> FamInstEnv -> GlobalEnv -> GlobalEnv +setInstEnvs l_inst l_fam_inst genv + | (g_inst, _) <- global_inst_env genv + , (g_fam_inst, _) <- global_fam_inst_env genv + = genv { global_inst_env = (g_inst, l_inst) + , global_fam_inst_env = (g_fam_inst, l_fam_inst) } + emptyLocalEnv = LocalEnv { local_vars = emptyVarEnv + , local_tyvars = [] , local_tyvar_pa = emptyVarEnv } @@ -126,14 +181,15 @@ emptyLocalEnv = LocalEnv { updVectInfo :: GlobalEnv -> TypeEnv -> VectInfo -> VectInfo updVectInfo env tyenv info = info { - vectInfoCCVar = global_exported_vars env - , vectInfoCCTyCon = tc_env + vectInfoVar = global_exported_vars env + , vectInfoTyCon = mk_env typeEnvTyCons global_tycons + , vectInfoDataCon = mk_env typeEnvDataCons global_datacons } where - tc_env = mkNameEnv [(tc_name, (tc,tc')) - | tc <- typeEnvTyCons tyenv - , let tc_name = tyConName tc - , Just tc' <- [lookupNameEnv (global_tycons env) tc_name]] + mk_env from_tyenv from_env = mkNameEnv [(name, (from,to)) + | from <- from_tyenv tyenv + , let name = getName from + , Just to <- [lookupNameEnv (from_env env) name]] data VResult a = Yes GlobalEnv LocalEnv a | No @@ -164,6 +220,11 @@ maybeV p = maybe noV return =<< p orElseV :: VM a -> VM a -> VM a orElseV p q = maybe q return =<< tryV p +fixV :: (a -> VM a) -> VM a +fixV f = VM (\bi genv lenv -> fixDs $ \r -> runVM (f (unYes r)) bi genv lenv ) + where + unYes (Yes _ _ x) = x + localV :: VM a -> VM a localV p = do env <- readLEnv id @@ -171,6 +232,14 @@ localV p = do setLEnv env return x +closedV :: VM a -> VM a +closedV p = do + env <- readLEnv id + setLEnv emptyLocalEnv + x <- p + setLEnv env + return x + liftDs :: DsM a -> VM a liftDs p = VM $ \bi genv lenv -> do { x <- p; return (Yes genv lenv x) } @@ -195,6 +264,22 @@ setLEnv lenv = VM $ \_ genv _ -> return (Yes genv lenv ()) updLEnv :: (LocalEnv -> LocalEnv) -> VM () updLEnv f = VM $ \_ genv lenv -> return (Yes genv (f lenv) ()) +getInstEnv :: VM (InstEnv, InstEnv) +getInstEnv = readGEnv global_inst_env + +getFamInstEnv :: VM FamInstEnvs +getFamInstEnv = readGEnv global_fam_inst_env + +cloneName :: (OccName -> OccName) -> Name -> VM Name +cloneName mk_occ name = liftM make (liftDs newUnique) + where + occ_name = mk_occ (nameOccName name) + + make u | isExternalName name = mkExternalName u (nameModule name) + occ_name + (nameSrcSpan name) + | otherwise = mkSystemName u occ_name + newLocalVar :: FastString -> Type -> VM Var newLocalVar fs ty = do @@ -207,27 +292,134 @@ newTyVar fs k u <- liftDs newUnique return $ mkTyVar (mkSysTvName u fs) k -lookupTyCon :: TyCon -> VM (Maybe TyCon) -lookupTyCon tc = readGEnv $ \env -> lookupNameEnv (global_tycons env) (tyConName tc) +defGlobalVar :: Var -> Var -> VM () +defGlobalVar v v' = updGEnv $ \env -> + env { global_vars = extendVarEnv (global_vars env) v (Var v') + , global_exported_vars = upd (global_exported_vars env) + } + where + upd env | isExportedId v = extendVarEnv env v (v, v') + | otherwise = env -extendTyVarPA :: Var -> CoreExpr -> VM () -extendTyVarPA tv pa = updLEnv $ \env -> env { local_tyvar_pa = extendVarEnv (local_tyvar_pa env) tv pa } +lookupVar :: Var -> VM (Scope CoreExpr (CoreExpr, CoreExpr)) +lookupVar v + = do + r <- readLEnv $ \env -> lookupVarEnv (local_vars env) v + case r of + Just e -> return (Local e) + Nothing -> liftM Global + $ maybeV (readGEnv $ \env -> lookupVarEnv (global_vars env) v) + +lookupTyCon :: TyCon -> VM (Maybe TyCon) +lookupTyCon tc + | isUnLiftedTyCon tc || isTupleTyCon tc = return (Just tc) + + | otherwise = readGEnv $ \env -> lookupNameEnv (global_tycons env) (tyConName tc) + +defTyCon :: TyCon -> TyCon -> VM () +defTyCon tc tc' = updGEnv $ \env -> + env { global_tycons = extendNameEnv (global_tycons env) (tyConName tc) tc' } + +lookupDataCon :: DataCon -> VM (Maybe DataCon) +lookupDataCon dc = readGEnv $ \env -> lookupNameEnv (global_datacons env) (dataConName dc) + +defDataCon :: DataCon -> DataCon -> VM () +defDataCon dc dc' = updGEnv $ \env -> + env { global_datacons = extendNameEnv (global_datacons env) (dataConName dc) dc' } + +lookupTyVarPA :: Var -> VM (Maybe CoreExpr) +lookupTyVarPA tv = readLEnv $ \env -> lookupVarEnv (local_tyvar_pa env) tv + +defLocalTyVar :: TyVar -> VM () +defLocalTyVar tv = updLEnv $ \env -> + env { local_tyvars = tv : local_tyvars env + , local_tyvar_pa = local_tyvar_pa env `delVarEnv` tv + } + +defLocalTyVarWithPA :: TyVar -> CoreExpr -> VM () +defLocalTyVarWithPA tv pa = updLEnv $ \env -> + env { local_tyvars = tv : local_tyvars env + , local_tyvar_pa = extendVarEnv (local_tyvar_pa env) tv pa + } + +localTyVars :: VM [TyVar] +localTyVars = readLEnv (reverse . local_tyvars) + +-- Look up the dfun of a class instance. +-- +-- The match must be unique - ie, match exactly one instance - but the +-- type arguments used for matching may be more specific than those of +-- the class instance declaration. The found class instances must not have +-- any type variables in the instance context that do not appear in the +-- instances head (i.e., no flexi vars); for details for what this means, +-- see the docs at InstEnv.lookupInstEnv. +-- +lookupInst :: Class -> [Type] -> VM (DFunId, [Type]) +lookupInst cls tys + = do { instEnv <- getInstEnv + ; case lookupInstEnv instEnv cls tys of + ([(inst, inst_tys)], _) + | noFlexiVar -> return (instanceDFunId inst, inst_tys') + | otherwise -> pprPanic "VectMonad.lookupInst: flexi var: " + (ppr $ mkTyConApp (classTyCon cls) tys) + where + inst_tys' = [ty | Right ty <- inst_tys] + noFlexiVar = all isRight inst_tys + _other -> noV + } + where + isRight (Left _) = False + isRight (Right _) = True + +-- Look up the representation tycon of a family instance. +-- +-- The match must be unique - ie, match exactly one instance - but the +-- type arguments used for matching may be more specific than those of +-- the family instance declaration. +-- +-- Return the instance tycon and its type instance. For example, if we have +-- +-- lookupFamInst 'T' '[Int]' yields (':R42T', 'Int') +-- +-- then we have a coercion (ie, type instance of family instance coercion) +-- +-- :Co:R42T Int :: T [Int] ~ :R42T Int +-- +-- which implies that :R42T was declared as 'data instance T [a]'. +-- +lookupFamInst :: TyCon -> [Type] -> VM (TyCon, [Type]) +lookupFamInst tycon tys + = ASSERT( isOpenTyCon tycon ) + do { instEnv <- getFamInstEnv + ; case lookupFamInstEnv instEnv tycon tys of + [(fam_inst, rep_tys)] -> return (famInstTyCon fam_inst, rep_tys) + _other -> + pprPanic "VectMonad.lookupFamInst: not found: " + (ppr $ mkTyConApp tycon tys) + } initV :: HscEnv -> ModGuts -> VectInfo -> VM a -> IO (Maybe (VectInfo, a)) initV hsc_env guts info p = do + eps <- hscEPS hsc_env + let famInstEnvs = (eps_fam_inst_env eps, mg_fam_inst_env guts) + let instEnvs = (eps_inst_env eps, mg_inst_env guts) + Just r <- initDs hsc_env (mg_module guts) (mg_rdr_env guts) (mg_types guts) - go + (go instEnvs famInstEnvs) return r where - go = do - builtins <- initBuiltins - r <- runVM p builtins (initGlobalEnv info) emptyLocalEnv - case r of - Yes genv _ x -> return $ Just (new_info genv, x) - No -> return Nothing + + go instEnvs famInstEnvs = + do + builtins <- initBuiltins + r <- runVM p builtins (initGlobalEnv info instEnvs famInstEnvs builtins) + emptyLocalEnv + case r of + Yes genv _ x -> return $ Just (new_info genv, x) + No -> return Nothing new_info genv = updVectInfo genv (mg_types guts) info