#include "HsVersions.h"
+import VectMonad
+import VectUtils
+
import DynFlags
import HscTypes
showPass dflags "Vectorisation"
eps <- hscEPS hsc_env
let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
- Just guts' <- initDs hsc_env (mg_module guts)
- (mg_rdr_env guts)
- (mg_types guts)
- (vectoriseModule info guts)
+ Just (info', guts') <- initV hsc_env guts info (vectModule guts)
endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
- return guts'
+ return $ guts' { mg_vect_info = info' }
where
dflags = hsc_dflags hsc_env
--- ----------------------------------------------------------------------------
--- Vectorisation monad
-
-data Builtins = Builtins {
- parrayTyCon :: TyCon
- , paTyCon :: TyCon
- , closureTyCon :: TyCon
- , mkClosureVar :: Var
- , applyClosureVar :: Var
- , mkClosurePVar :: Var
- , applyClosurePVar :: Var
- , closurePAVar :: Var
- , lengthPAVar :: Var
- , replicatePAVar :: Var
- }
-
-initBuiltins :: DsM Builtins
-initBuiltins
- = do
- parrayTyCon <- dsLookupTyCon parrayTyConName
- paTyCon <- dsLookupTyCon paTyConName
- closureTyCon <- dsLookupTyCon closureTyConName
-
- mkClosureVar <- dsLookupGlobalId mkClosureName
- applyClosureVar <- dsLookupGlobalId applyClosureName
- mkClosurePVar <- dsLookupGlobalId mkClosurePName
- applyClosurePVar <- dsLookupGlobalId applyClosurePName
- closurePAVar <- dsLookupGlobalId closurePAName
- lengthPAVar <- dsLookupGlobalId lengthPAName
- replicatePAVar <- dsLookupGlobalId replicatePAName
-
- return $ Builtins {
- parrayTyCon = parrayTyCon
- , paTyCon = paTyCon
- , closureTyCon = closureTyCon
- , mkClosureVar = mkClosureVar
- , applyClosureVar = applyClosureVar
- , mkClosurePVar = mkClosurePVar
- , applyClosurePVar = applyClosurePVar
- , closurePAVar = closurePAVar
- , lengthPAVar = lengthPAVar
- , replicatePAVar = replicatePAVar
- }
-
-data GlobalEnv = GlobalEnv {
- -- Mapping from global variables to their vectorised versions.
- --
- global_vars :: VarEnv CoreExpr
-
- -- 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.
- --
- , global_tycons :: NameEnv TyCon
-
- -- Mapping from TyCons to their PA dictionaries
- --
- , global_tycon_pa :: NameEnv CoreExpr
- }
-
-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 :: GlobalEnv -> ModGuts -> ModGuts
-updVectInfo env guts = guts { mg_vect_info = info' }
- where
- info' = info {
- vectInfoCCVar = global_exported_vars env
- , vectInfoCCTyCon = tc_env
- }
-
- info = mg_vect_info guts
- tyenv = mg_types guts
-
- tc_env = mkNameEnv [(tc_name, (tc,tc')) | tc <- typeEnvTyCons tyenv
- , let tc_name = tyConName tc
- , Just tc' <- [lookupNameEnv (global_tycons env) tc_name]]
-
-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 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 genv lenv -> return (Yes genv lenv (f bi))
-
-readGEnv :: (GlobalEnv -> a) -> VM a
-readGEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f genv))
-
-setGEnv :: GlobalEnv -> VM ()
-setGEnv genv = VM $ \_ _ lenv -> return (Yes genv lenv ())
-
-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 = readGEnv $ \env -> lookupNameEnv (global_tycons env) (tyConName tc)
-
--- ----------------------------------------------------------------------------
--- Bindings
-
-vectoriseModule :: VectInfo -> ModGuts -> DsM ModGuts
-vectoriseModule info guts
- = do
- builtins <- initBuiltins
- 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
-
+-- ----------------------------------------------------------------------------
+-- Bindings
vectBndr :: Var -> VM (Var, Var)
vectBndr v
replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
replicateP expr len
= do
- pa <- paOfType ty
- rep <- builtin replicatePAVar
- return $ mkApps (Var rep) [Type ty, pa, expr, len]
+ dict <- paDictOfType ty
+ rep <- builtin replicatePAVar
+ return $ mkApps (Var rep) [Type ty, dict, expr, len]
where
ty = exprType expr
(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
+vectExpr lc (_, AnnLam bndr body)
+ | isTyVar bndr
= 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)
-
-
+ r <- paDictArgType bndr
+ (upd_env, add_lam) <- get_upd r
+ (vbody, lbody) <- localV (upd_env >> vectExpr lc body)
+ return (Lam bndr (add_lam vbody), Lam bndr (add_lam lbody))
+ where
+ get_upd Nothing = return (deleteTyVarPA bndr, id)
+ get_upd (Just pa_ty) = do
+ pa_var <- newLocalVar FSLIT("dPA") pa_ty
+ return (extendTyVarPA bndr (Var pa_var),
+ Lam pa_var)
-- ----------------------------------------------------------------------------
-- Types
(mapM vectType [ty1,ty2])
vectType (ForAllTy tv ty)
= do
- r <- paArgType (TyVarTy tv) (tyVarKind tv)
+ r <- paDictArgType tv
ty' <- vectType ty
- return . ForAllTy tv $ case r of { Just paty -> FunTy paty ty'; Nothing -> ty' }
+ return $ ForAllTy tv (wrap r ty')
+ where
+ wrap Nothing = id
+ wrap (Just pa_ty) = FunTy pa_ty
vectType ty = pprPanic "vectType:" (ppr ty)