#include "HsVersions.h"
+import VectMonad
+import VectUtils
+
import DynFlags
import HscTypes
import CoreLint ( showPass, endPass )
import CoreSyn
+import CoreUtils
+import CoreFVs
import TyCon
import Type
import TypeRep
import VarEnv
import Name ( mkSysTvName )
import NameEnv
+import Id
-import DsMonad
+import DsMonad hiding (mapAndUnzipM)
import PrelNames
import Outputable
import FastString
-import Control.Monad ( liftM2 )
+import Control.Monad ( liftM, liftM2, mapAndUnzipM )
vectorise :: HscEnv -> ModGuts -> IO ModGuts
vectorise hsc_env guts
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 VEnv = VEnv {
- -- Mapping from global variables to their vectorised versions.
- --
- vect_global_vars :: VarEnv CoreExpr
-
- -- Mapping from local variables to their vectorised and lifted
- -- versions.
- --
- , vect_local_vars :: VarEnv (CoreExpr, CoreExpr)
-
- -- Exported variables which have a vectorised version
- --
- , vect_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 PA dictionaries
- --
- , vect_tycon_pa :: NameEnv CoreExpr
-
- -- Mapping from tyvars to their PA dictionaries
- --
- , vect_tyvar_pa :: VarEnv CoreExpr
- }
-
-initVEnv :: VectInfo -> DsM VEnv
-initVEnv info
- = return $ VEnv {
- vect_global_vars = mapVarEnv (Var . snd) $ vectInfoCCVar info
- , vect_local_vars = emptyVarEnv
- , vect_exported_vars = emptyVarEnv
- , vect_tycons = mapNameEnv snd $ vectInfoCCTyCon info
- , vect_tycon_pa = emptyNameEnv
- , vect_tyvar_pa = emptyVarEnv
- }
-
--- FIXME
-updVectInfo :: VEnv -> ModGuts -> ModGuts
-updVectInfo env guts = guts { mg_vect_info = info' }
- where
- info' = info {
- vectInfoCCVar = vect_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 (vect_tycons env) tc_name]]
-
-data VResult a = Yes VEnv a | No
-
-newtype VM a = VM { runVM :: Builtins -> VEnv -> DsM (VResult a) }
-
-instance Monad VM where
- return x = VM $ \bi env -> return (Yes env x)
- VM p >>= f = VM $ \bi env -> do
- r <- p bi env
- case r of
- Yes env' x -> runVM (f x) bi env'
- No -> return No
-
-noV :: VM a
-noV = VM $ \bi env -> return No
-
-tryV :: VM a -> VM (Maybe a)
-tryV (VM p) = VM $ \bi env -> do
- r <- p bi env
- case r of
- Yes env' x -> return (Yes env' (Just x))
- No -> return (Yes env 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
-
-liftDs :: DsM a -> VM a
-liftDs p = VM $ \bi env -> do { x <- p; return (Yes env x) }
-
-builtin :: (Builtins -> a) -> VM a
-builtin f = VM $ \bi env -> return (Yes env (f bi))
-
-readEnv :: (VEnv -> a) -> VM a
-readEnv f = VM $ \bi env -> return (Yes env (f env))
-
-setEnv :: VEnv -> VM ()
-setEnv env = VM $ \_ _ -> return (Yes env ())
-
-updEnv :: (VEnv -> VEnv) -> VM ()
-updEnv f = VM $ \_ env -> return (Yes (f env) ())
-
-newTyVar :: FastString -> Kind -> VM Var
-newTyVar fs k
- = do
- u <- liftDs newUnique
- return $ mkTyVar (mkSysTvName u fs) k
-
-lookupVar :: Var -> VM CoreExpr
-lookupVar v = maybeV . readEnv $ \env -> lookupVarEnv (vect_vars env) v
-
-lookupTyCon :: TyCon -> VM (Maybe TyCon)
-lookupTyCon tc = readEnv $ \env -> lookupNameEnv (vect_tycons env) (tyConName tc)
+vectModule :: ModGuts -> VM ModGuts
+vectModule guts = return guts
-- ----------------------------------------------------------------------------
-- Bindings
-vectoriseModule :: VectInfo -> ModGuts -> DsM ModGuts
-vectoriseModule info guts
+vectBndr :: Var -> VM (Var, Var)
+vectBndr v
= do
- builtins <- initBuiltins
- env <- initVEnv info
- r <- runVM (vectModule guts) builtins env
- case r of
- Yes env' guts' -> return $ updVectInfo env' guts'
- No -> return guts
-
-vectModule :: ModGuts -> VM ModGuts
-vectModule guts = return guts
+ 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)
-- ----------------------------------------------------------------------------
--- Types
-
-paArgType :: Type -> Kind -> VM (Maybe Type)
-paArgType ty k
- | Just k' <- kindView k = paArgType ty k'
+-- Expressions
--- 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)
+replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
+replicateP expr len
= 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)
+ dict <- paDictOfType ty
+ rep <- builtin replicatePAVar
+ return $ mkApps (Var rep) [Type ty, dict, expr, len]
+ where
+ ty = exprType expr
-paArgType ty k
- | isLiftedTypeKind k
+capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
+capply (vfn, lfn) (varg, larg)
= do
- tc <- builtin paTyCon
- return . Just $ TyConApp tc [ty]
-
- | otherwise
- = return Nothing
+ 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
-paArgType' :: Type -> Kind -> VM Type
-paArgType' ty k
+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
- r <- paArgType ty k
- case r of
- Just ty' -> return ty'
- Nothing -> pprPanic "paArgType'" (ppr ty)
+ 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)
+vectExpr lc (_, AnnLam bndr body)
+ | isTyVar bndr
+ = do
+ 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
vectTyCon :: TyCon -> VM TyCon
vectTyCon tc
(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)
+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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