import DynFlags
import HscTypes
-import CoreLint ( showPass, endPass )
+import CoreLint ( showPass, endPass )
+import CoreSyn
+import CoreUtils
+import CoreFVs
import TyCon
+import Type
+import TypeRep
import Var
import VarEnv
+import Name ( mkSysTvName )
import NameEnv
+import Id
-import DsMonad
+import DsMonad hiding (mapAndUnzipM)
import PrelNames
import Outputable
+import FastString
+import Control.Monad ( liftM, liftM2, mapAndUnzipM )
vectorise :: HscEnv -> ModGuts -> IO ModGuts
vectorise hsc_env guts
, replicatePAVar = replicatePAVar
}
-data VEnv = VEnv {
- -- Mapping from variables to their vectorised versions
- --
- vect_vars :: VarEnv Var
+data GlobalEnv = GlobalEnv {
+ -- Mapping from global variables to their vectorised versions.
+ --
+ global_vars :: VarEnv CoreExpr
- -- Exported variables which have a vectorised version
- --
- , vect_exported_vars :: VarEnv (Var, Var)
+ -- Exported variables which have a vectorised version
+ --
+ , global_exported_vars :: VarEnv (Var, Var)
- -- Mapping from TyCons to their vectorised versions.
- -- TyCons which do not have to be vectorised are mapped to
- -- themselves.
- , vect_tycons :: NameEnv TyCon
- }
+ -- Mapping from TyCons to their vectorised versions.
+ -- TyCons which do not have to be vectorised are mapped to
+ -- themselves.
+ --
+ , global_tycons :: NameEnv TyCon
+
+ -- Mapping from TyCons to their PA dictionaries
+ --
+ , global_tycon_pa :: NameEnv CoreExpr
+ }
-initVEnv :: VectInfo -> DsM VEnv
-initVEnv info
- = return $ VEnv {
- vect_vars = mapVarEnv snd $ vectInfoCCVar info
- , vect_exported_vars = emptyVarEnv
- , vect_tycons = mapNameEnv snd $ vectInfoCCTyCon info
- }
+data LocalEnv = LocalEnv {
+ -- Mapping from local variables to their vectorised and
+ -- lifted versions
+ --
+ local_vars :: VarEnv (CoreExpr, CoreExpr)
+
+ -- Mapping from tyvars to their PA dictionaries
+ , local_tyvar_pa :: VarEnv CoreExpr
+ }
+
+
+initGlobalEnv :: VectInfo -> GlobalEnv
+initGlobalEnv info
+ = GlobalEnv {
+ global_vars = mapVarEnv (Var . snd) $ vectInfoCCVar info
+ , global_exported_vars = emptyVarEnv
+ , global_tycons = mapNameEnv snd $ vectInfoCCTyCon info
+ , global_tycon_pa = emptyNameEnv
+ }
+
+emptyLocalEnv = LocalEnv {
+ local_vars = emptyVarEnv
+ , local_tyvar_pa = emptyVarEnv
+ }
-- FIXME
-updVectInfo :: VEnv -> ModGuts -> ModGuts
+updVectInfo :: GlobalEnv -> ModGuts -> ModGuts
updVectInfo env guts = guts { mg_vect_info = info' }
where
info' = info {
- vectInfoCCVar = vect_exported_vars env
+ vectInfoCCVar = global_exported_vars env
, vectInfoCCTyCon = tc_env
}
tc_env = mkNameEnv [(tc_name, (tc,tc')) | tc <- typeEnvTyCons tyenv
, let tc_name = tyConName tc
- , Just tc' <- [lookupNameEnv (vect_tycons env) tc_name]]
+ , Just tc' <- [lookupNameEnv (global_tycons env) tc_name]]
-newtype VM a = VM { runVM :: Builtins -> VEnv -> DsM (VEnv, a) }
+data VResult a = Yes GlobalEnv LocalEnv a | No
+
+newtype VM a = VM { runVM :: Builtins -> GlobalEnv -> LocalEnv -> DsM (VResult a) }
instance Monad VM where
- return x = VM $ \bi env -> return (env, x)
- VM p >>= f = VM $ \bi env -> do
- (env', x) <- p bi env
- runVM (f x) bi env'
+ return x = VM $ \bi genv lenv -> return (Yes genv lenv x)
+ VM p >>= f = VM $ \bi genv lenv -> do
+ r <- p bi genv lenv
+ case r of
+ Yes genv' lenv' x -> runVM (f x) bi genv' lenv'
+ No -> return No
+
+noV :: VM a
+noV = VM $ \_ _ _ -> return No
+
+tryV :: VM a -> VM (Maybe a)
+tryV (VM p) = VM $ \bi genv lenv ->
+ do
+ r <- p bi genv lenv
+ case r of
+ Yes genv' lenv' x -> return (Yes genv' lenv' (Just x))
+ No -> return (Yes genv lenv Nothing)
+
+maybeV :: VM (Maybe a) -> VM a
+maybeV p = maybe noV return =<< p
+
+orElseV :: VM a -> VM a -> VM a
+orElseV p q = maybe q return =<< tryV p
+
+localV :: VM a -> VM a
+localV p = do
+ env <- readLEnv id
+ 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) }
builtin :: (Builtins -> a) -> VM a
-builtin f = VM $ \bi env -> return (env, f bi)
+builtin f = VM $ \bi genv lenv -> return (Yes genv lenv (f bi))
-readEnv :: (VEnv -> a) -> VM a
-readEnv f = VM $ \bi env -> return (env, f env)
+readGEnv :: (GlobalEnv -> a) -> VM a
+readGEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f genv))
-setEnv :: VEnv -> VM ()
-setEnv env = VM $ \_ _ -> return (env, ())
+setGEnv :: GlobalEnv -> VM ()
+setGEnv genv = VM $ \_ _ lenv -> return (Yes genv lenv ())
-updEnv :: (VEnv -> VEnv) -> VM ()
-updEnv f = VM $ \_ env -> return (f env, ())
+updGEnv :: (GlobalEnv -> GlobalEnv) -> VM ()
+updGEnv f = VM $ \_ genv lenv -> return (Yes (f genv) lenv ())
+readLEnv :: (LocalEnv -> a) -> VM a
+readLEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f lenv))
+
+setLEnv :: LocalEnv -> VM ()
+setLEnv lenv = VM $ \_ genv _ -> return (Yes genv lenv ())
+
+updLEnv :: (LocalEnv -> LocalEnv) -> VM ()
+updLEnv f = VM $ \_ genv lenv -> return (Yes genv (f lenv) ())
+
+newTyVar :: FastString -> Kind -> VM Var
+newTyVar fs k
+ = do
+ u <- liftDs newUnique
+ return $ mkTyVar (mkSysTvName u fs) k
lookupTyCon :: TyCon -> VM (Maybe TyCon)
-lookupTyCon tc = readEnv $ \env -> lookupNameEnv (vect_tycons env) (tyConName tc)
+lookupTyCon tc = readGEnv $ \env -> lookupNameEnv (global_tycons env) (tyConName tc)
-- ----------------------------------------------------------------------------
-- Bindings
vectoriseModule info guts
= do
builtins <- initBuiltins
- env <- initVEnv info
- (env', guts') <- runVM (vectModule guts) builtins env
- return $ updVectInfo env' guts'
+ r <- runVM (vectModule guts) builtins (initGlobalEnv info) emptyLocalEnv
+ case r of
+ Yes genv _ guts' -> return $ updVectInfo genv guts'
+ No -> return guts
vectModule :: ModGuts -> VM ModGuts
vectModule guts = return guts
+
+
+vectBndr :: Var -> VM (Var, Var)
+vectBndr v
+ = do
+ vty <- vectType (idType v)
+ lty <- mkPArrayTy 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 (Var vv, Var lv) }
+
+vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
+vectBndrIn v p
+ = localV
+ $ do
+ (vv, lv) <- vectBndr v
+ x <- p
+ return (vv, lv, x)
+
+vectBndrsIn :: [Var] -> VM a -> VM ([Var], [Var], a)
+vectBndrsIn vs p
+ = localV
+ $ do
+ (vvs, lvs) <- mapAndUnzipM vectBndr vs
+ x <- p
+ return (vvs, lvs, x)
+
+-- ----------------------------------------------------------------------------
+-- Expressions
+
+replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
+replicateP expr len
+ = do
+ pa <- paOfType ty
+ rep <- builtin replicatePAVar
+ return $ mkApps (Var rep) [Type ty, pa, expr, len]
+ where
+ ty = exprType expr
+
+capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
+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 :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
+vectVar lc v = local v `orElseV` global v
+ where
+ local v = maybeV (readLEnv $ \env -> lookupVarEnv (local_vars env) v)
+ global v = do
+ vexpr <- maybeV (readGEnv $ \env -> lookupVarEnv (global_vars env) v)
+ lexpr <- replicateP vexpr lc
+ return (vexpr, lexpr)
+
+vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
+vectExpr lc (_, AnnType ty)
+ = do
+ vty <- vectType ty
+ return (Type vty, Type vty)
+vectExpr lc (_, AnnVar v) = vectVar lc v
+vectExpr lc (_, AnnLit lit)
+ = do
+ let vexpr = Lit lit
+ lexpr <- replicateP vexpr lc
+ return (vexpr, lexpr)
+vectExpr lc (_, AnnNote note expr)
+ = do
+ (vexpr, lexpr) <- vectExpr lc expr
+ return (Note note vexpr, Note note lexpr)
+vectExpr lc (_, AnnApp fn arg)
+ = do
+ fn' <- vectExpr lc fn
+ arg' <- vectExpr lc arg
+ capply fn' arg'
+vectExpr lc (_, AnnCase expr bndr ty alts)
+ = panic "vectExpr: case"
+vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
+ = do
+ (vrhs, lrhs) <- vectExpr lc rhs
+ (vbndr, lbndr, (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
+ return (Let (NonRec vbndr vrhs) vbody,
+ Let (NonRec lbndr lrhs) lbody)
+vectExpr lc (_, AnnLet (AnnRec prs) body)
+ = do
+ (vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
+ return (Let (Rec (zip vbndrs vrhss)) vbody,
+ Let (Rec (zip lbndrs lrhss)) lbody)
+ where
+ (bndrs, rhss) = unzip prs
+
+ vect = do
+ (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
+ (vbody, lbody) <- vectExpr lc body
+ return (vrhss, vbody, lrhss, lbody)
+
+-- ----------------------------------------------------------------------------
+-- PA dictionaries
+
+paArgType :: Type -> Kind -> VM (Maybe Type)
+paArgType ty k
+ | Just k' <- kindView k = paArgType ty k'
+
+-- Here, we assume that for a kind (k1 -> k2) to be valid, k1 and k2 can only
+-- be made up of * and (->), i.e., they can't be coercion kinds or #.
+paArgType ty (FunTy k1 k2)
+ = do
+ tv <- newTyVar FSLIT("a") k1
+ ty1 <- paArgType' (TyVarTy tv) k1
+ ty2 <- paArgType' (AppTy ty (TyVarTy tv)) k2
+ return . Just $ ForAllTy tv (FunTy ty1 ty2)
+
+paArgType ty k
+ | isLiftedTypeKind k
+ = do
+ tc <- builtin paTyCon
+ return . Just $ TyConApp tc [ty]
+
+ | otherwise
+ = return Nothing
+
+paArgType' :: Type -> Kind -> VM Type
+paArgType' ty k
+ = do
+ r <- paArgType ty k
+ case r of
+ Just ty' -> return ty'
+ Nothing -> pprPanic "paArgType'" (ppr ty)
+
+paOfTyCon :: TyCon -> VM CoreExpr
+-- FIXME: just for now
+paOfTyCon tc = maybeV (readGEnv $ \env -> lookupNameEnv (global_tycon_pa env) (tyConName tc))
+
+paOfType :: Type -> VM CoreExpr
+paOfType ty | Just ty' <- coreView ty = paOfType ty'
+
+paOfType (TyVarTy tv) = maybeV (readLEnv $ \env -> lookupVarEnv (local_tyvar_pa env) tv)
+paOfType (AppTy ty1 ty2)
+ = do
+ e1 <- paOfType ty1
+ e2 <- paOfType ty2
+ return $ mkApps e1 [Type ty2, e2]
+paOfType (TyConApp tc tys)
+ = do
+ e <- paOfTyCon tc
+ es <- mapM paOfType tys
+ return $ mkApps e [arg | (t,e) <- zip tys es, arg <- [Type t, e]]
+paOfType (FunTy ty1 ty2) = paOfType (TyConApp funTyCon [ty1,ty2])
+paOfType t@(ForAllTy tv ty) = pprPanic "paOfType:" (ppr t)
+paOfType ty = pprPanic "paOfType:" (ppr ty)
+
+
+
+-- ----------------------------------------------------------------------------
+-- Types
+
+vectTyCon :: TyCon -> VM TyCon
+vectTyCon tc
+ | isFunTyCon tc = builtin closureTyCon
+ | isBoxedTupleTyCon tc = return tc
+ | isUnLiftedTyCon tc = return tc
+ | otherwise = do
+ r <- lookupTyCon tc
+ case r of
+ Just tc' -> return tc'
+
+ -- FIXME: just for now
+ Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
+
+vectType :: Type -> VM Type
+vectType ty | Just ty' <- coreView ty = vectType ty
+vectType (TyVarTy tv) = return $ TyVarTy tv
+vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
+vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
+vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
+ (mapM vectType [ty1,ty2])
+vectType (ForAllTy tv ty)
+ = do
+ r <- paArgType (TyVarTy tv) (tyVarKind tv)
+ ty' <- vectType ty
+ return . ForAllTy tv $ case r of { Just paty -> FunTy paty ty'; Nothing -> ty' }
+
+vectType ty = pprPanic "vectType:" (ppr ty)
+
+isClosureTyCon :: TyCon -> Bool
+isClosureTyCon tc = tyConUnique tc == closureTyConKey
+
+splitClosureTy :: Type -> (Type, Type)
+splitClosureTy ty
+ | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty
+ , isClosureTyCon tc
+ = (arg_ty, res_ty)
+
+ | otherwise = pprPanic "splitClosureTy" (ppr ty)
+
+mkPArrayTy :: Type -> VM Type
+mkPArrayTy ty = do
+ tc <- builtin parrayTyCon
+ return $ TyConApp tc [ty]
+
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