1 module Vectorise( vectorise )
4 #include "HsVersions.h"
9 import CoreLint ( showPass, endPass )
18 import Name ( mkSysTvName )
22 import DsMonad hiding (mapAndUnzipM)
28 import Control.Monad ( liftM, liftM2, mapAndUnzipM )
30 vectorise :: HscEnv -> ModGuts -> IO ModGuts
31 vectorise hsc_env guts
32 | not (Opt_Vectorise `dopt` dflags) = return guts
35 showPass dflags "Vectorisation"
37 let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
38 Just guts' <- initDs hsc_env (mg_module guts)
41 (vectoriseModule info guts)
42 endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
45 dflags = hsc_dflags hsc_env
47 -- ----------------------------------------------------------------------------
48 -- Vectorisation monad
50 data Builtins = Builtins {
53 , closureTyCon :: TyCon
55 , applyClosureVar :: Var
56 , mkClosurePVar :: Var
57 , applyClosurePVar :: Var
60 , replicatePAVar :: Var
63 initBuiltins :: DsM Builtins
66 parrayTyCon <- dsLookupTyCon parrayTyConName
67 paTyCon <- dsLookupTyCon paTyConName
68 closureTyCon <- dsLookupTyCon closureTyConName
70 mkClosureVar <- dsLookupGlobalId mkClosureName
71 applyClosureVar <- dsLookupGlobalId applyClosureName
72 mkClosurePVar <- dsLookupGlobalId mkClosurePName
73 applyClosurePVar <- dsLookupGlobalId applyClosurePName
74 closurePAVar <- dsLookupGlobalId closurePAName
75 lengthPAVar <- dsLookupGlobalId lengthPAName
76 replicatePAVar <- dsLookupGlobalId replicatePAName
79 parrayTyCon = parrayTyCon
81 , closureTyCon = closureTyCon
82 , mkClosureVar = mkClosureVar
83 , applyClosureVar = applyClosureVar
84 , mkClosurePVar = mkClosurePVar
85 , applyClosurePVar = applyClosurePVar
86 , closurePAVar = closurePAVar
87 , lengthPAVar = lengthPAVar
88 , replicatePAVar = replicatePAVar
91 data GlobalEnv = GlobalEnv {
92 -- Mapping from global variables to their vectorised versions.
94 global_vars :: VarEnv CoreExpr
96 -- Exported variables which have a vectorised version
98 , global_exported_vars :: VarEnv (Var, Var)
100 -- Mapping from TyCons to their vectorised versions.
101 -- TyCons which do not have to be vectorised are mapped to
104 , global_tycons :: NameEnv TyCon
106 -- Mapping from TyCons to their PA dictionaries
108 , global_tycon_pa :: NameEnv CoreExpr
111 data LocalEnv = LocalEnv {
112 -- Mapping from local variables to their vectorised and
115 local_vars :: VarEnv (CoreExpr, CoreExpr)
117 -- Mapping from tyvars to their PA dictionaries
118 , local_tyvar_pa :: VarEnv CoreExpr
122 initGlobalEnv :: VectInfo -> GlobalEnv
125 global_vars = mapVarEnv (Var . snd) $ vectInfoCCVar info
126 , global_exported_vars = emptyVarEnv
127 , global_tycons = mapNameEnv snd $ vectInfoCCTyCon info
128 , global_tycon_pa = emptyNameEnv
131 emptyLocalEnv = LocalEnv {
132 local_vars = emptyVarEnv
133 , local_tyvar_pa = emptyVarEnv
137 updVectInfo :: GlobalEnv -> ModGuts -> ModGuts
138 updVectInfo env guts = guts { mg_vect_info = info' }
141 vectInfoCCVar = global_exported_vars env
142 , vectInfoCCTyCon = tc_env
145 info = mg_vect_info guts
146 tyenv = mg_types guts
148 tc_env = mkNameEnv [(tc_name, (tc,tc')) | tc <- typeEnvTyCons tyenv
149 , let tc_name = tyConName tc
150 , Just tc' <- [lookupNameEnv (global_tycons env) tc_name]]
152 data VResult a = Yes GlobalEnv LocalEnv a | No
154 newtype VM a = VM { runVM :: Builtins -> GlobalEnv -> LocalEnv -> DsM (VResult a) }
156 instance Monad VM where
157 return x = VM $ \bi genv lenv -> return (Yes genv lenv x)
158 VM p >>= f = VM $ \bi genv lenv -> do
161 Yes genv' lenv' x -> runVM (f x) bi genv' lenv'
165 noV = VM $ \_ _ _ -> return No
167 tryV :: VM a -> VM (Maybe a)
168 tryV (VM p) = VM $ \bi genv lenv ->
172 Yes genv' lenv' x -> return (Yes genv' lenv' (Just x))
173 No -> return (Yes genv lenv Nothing)
175 maybeV :: VM (Maybe a) -> VM a
176 maybeV p = maybe noV return =<< p
178 orElseV :: VM a -> VM a -> VM a
179 orElseV p q = maybe q return =<< tryV p
181 localV :: VM a -> VM a
188 liftDs :: DsM a -> VM a
189 liftDs p = VM $ \bi genv lenv -> do { x <- p; return (Yes genv lenv x) }
191 builtin :: (Builtins -> a) -> VM a
192 builtin f = VM $ \bi genv lenv -> return (Yes genv lenv (f bi))
194 readGEnv :: (GlobalEnv -> a) -> VM a
195 readGEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f genv))
197 setGEnv :: GlobalEnv -> VM ()
198 setGEnv genv = VM $ \_ _ lenv -> return (Yes genv lenv ())
200 updGEnv :: (GlobalEnv -> GlobalEnv) -> VM ()
201 updGEnv f = VM $ \_ genv lenv -> return (Yes (f genv) lenv ())
203 readLEnv :: (LocalEnv -> a) -> VM a
204 readLEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f lenv))
206 setLEnv :: LocalEnv -> VM ()
207 setLEnv lenv = VM $ \_ genv _ -> return (Yes genv lenv ())
209 updLEnv :: (LocalEnv -> LocalEnv) -> VM ()
210 updLEnv f = VM $ \_ genv lenv -> return (Yes genv (f lenv) ())
212 newTyVar :: FastString -> Kind -> VM Var
215 u <- liftDs newUnique
216 return $ mkTyVar (mkSysTvName u fs) k
218 lookupTyCon :: TyCon -> VM (Maybe TyCon)
219 lookupTyCon tc = readGEnv $ \env -> lookupNameEnv (global_tycons env) (tyConName tc)
221 -- ----------------------------------------------------------------------------
224 vectoriseModule :: VectInfo -> ModGuts -> DsM ModGuts
225 vectoriseModule info guts
227 builtins <- initBuiltins
228 r <- runVM (vectModule guts) builtins (initGlobalEnv info) emptyLocalEnv
230 Yes genv _ guts' -> return $ updVectInfo genv guts'
233 vectModule :: ModGuts -> VM ModGuts
234 vectModule guts = return guts
238 vectBndr :: Var -> VM (Var, Var)
241 vty <- vectType (idType v)
242 lty <- mkPArrayTy vty
243 let vv = v `Id.setIdType` vty
244 lv = v `Id.setIdType` lty
245 updLEnv (mapTo vv lv)
248 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (Var vv, Var lv) }
250 vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
254 (vv, lv) <- vectBndr v
258 vectBndrsIn :: [Var] -> VM a -> VM ([Var], [Var], a)
262 (vvs, lvs) <- mapAndUnzipM vectBndr vs
266 -- ----------------------------------------------------------------------------
269 replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
273 rep <- builtin replicatePAVar
274 return $ mkApps (Var rep) [Type ty, pa, expr, len]
278 capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
279 capply (vfn, lfn) (varg, larg)
281 apply <- builtin applyClosureVar
282 applyP <- builtin applyClosurePVar
283 return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
284 mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
287 (arg_ty, res_ty) = splitClosureTy fn_ty
289 vectVar :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
290 vectVar lc v = local v `orElseV` global v
292 local v = maybeV (readLEnv $ \env -> lookupVarEnv (local_vars env) v)
294 vexpr <- maybeV (readGEnv $ \env -> lookupVarEnv (global_vars env) v)
295 lexpr <- replicateP vexpr lc
296 return (vexpr, lexpr)
298 vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
299 vectExpr lc (_, AnnType ty)
302 return (Type vty, Type vty)
303 vectExpr lc (_, AnnVar v) = vectVar lc v
304 vectExpr lc (_, AnnLit lit)
307 lexpr <- replicateP vexpr lc
308 return (vexpr, lexpr)
309 vectExpr lc (_, AnnNote note expr)
311 (vexpr, lexpr) <- vectExpr lc expr
312 return (Note note vexpr, Note note lexpr)
313 vectExpr lc (_, AnnApp fn arg)
315 fn' <- vectExpr lc fn
316 arg' <- vectExpr lc arg
318 vectExpr lc (_, AnnCase expr bndr ty alts)
319 = panic "vectExpr: case"
320 vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
322 (vrhs, lrhs) <- vectExpr lc rhs
323 (vbndr, lbndr, (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
324 return (Let (NonRec vbndr vrhs) vbody,
325 Let (NonRec lbndr lrhs) lbody)
326 vectExpr lc (_, AnnLet (AnnRec prs) body)
328 (vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
329 return (Let (Rec (zip vbndrs vrhss)) vbody,
330 Let (Rec (zip lbndrs lrhss)) lbody)
332 (bndrs, rhss) = unzip prs
335 (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
336 (vbody, lbody) <- vectExpr lc body
337 return (vrhss, vbody, lrhss, lbody)
339 -- ----------------------------------------------------------------------------
342 paArgType :: Type -> Kind -> VM (Maybe Type)
344 | Just k' <- kindView k = paArgType ty k'
346 -- Here, we assume that for a kind (k1 -> k2) to be valid, k1 and k2 can only
347 -- be made up of * and (->), i.e., they can't be coercion kinds or #.
348 paArgType ty (FunTy k1 k2)
350 tv <- newTyVar FSLIT("a") k1
351 ty1 <- paArgType' (TyVarTy tv) k1
352 ty2 <- paArgType' (AppTy ty (TyVarTy tv)) k2
353 return . Just $ ForAllTy tv (FunTy ty1 ty2)
358 tc <- builtin paTyCon
359 return . Just $ TyConApp tc [ty]
364 paArgType' :: Type -> Kind -> VM Type
369 Just ty' -> return ty'
370 Nothing -> pprPanic "paArgType'" (ppr ty)
372 paOfTyCon :: TyCon -> VM CoreExpr
373 -- FIXME: just for now
374 paOfTyCon tc = maybeV (readGEnv $ \env -> lookupNameEnv (global_tycon_pa env) (tyConName tc))
376 paOfType :: Type -> VM CoreExpr
377 paOfType ty | Just ty' <- coreView ty = paOfType ty'
379 paOfType (TyVarTy tv) = maybeV (readLEnv $ \env -> lookupVarEnv (local_tyvar_pa env) tv)
380 paOfType (AppTy ty1 ty2)
384 return $ mkApps e1 [Type ty2, e2]
385 paOfType (TyConApp tc tys)
388 es <- mapM paOfType tys
389 return $ mkApps e [arg | (t,e) <- zip tys es, arg <- [Type t, e]]
390 paOfType (FunTy ty1 ty2) = paOfType (TyConApp funTyCon [ty1,ty2])
391 paOfType t@(ForAllTy tv ty) = pprPanic "paOfType:" (ppr t)
392 paOfType ty = pprPanic "paOfType:" (ppr ty)
396 -- ----------------------------------------------------------------------------
399 vectTyCon :: TyCon -> VM TyCon
401 | isFunTyCon tc = builtin closureTyCon
402 | isBoxedTupleTyCon tc = return tc
403 | isUnLiftedTyCon tc = return tc
407 Just tc' -> return tc'
409 -- FIXME: just for now
410 Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
412 vectType :: Type -> VM Type
413 vectType ty | Just ty' <- coreView ty = vectType ty
414 vectType (TyVarTy tv) = return $ TyVarTy tv
415 vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
416 vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
417 vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
418 (mapM vectType [ty1,ty2])
419 vectType (ForAllTy tv ty)
421 r <- paArgType (TyVarTy tv) (tyVarKind tv)
423 return . ForAllTy tv $ case r of { Just paty -> FunTy paty ty'; Nothing -> ty' }
425 vectType ty = pprPanic "vectType:" (ppr ty)
427 isClosureTyCon :: TyCon -> Bool
428 isClosureTyCon tc = tyConUnique tc == closureTyConKey
430 splitClosureTy :: Type -> (Type, Type)
432 | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty
436 | otherwise = pprPanic "splitClosureTy" (ppr ty)
438 mkPArrayTy :: Type -> VM Type
440 tc <- builtin parrayTyCon
441 return $ TyConApp tc [ty]