1 module Vectorise( vectorise )
4 #include "HsVersions.h"
11 import CoreLint ( showPass, endPass )
20 import Name ( mkSysTvName )
24 import DsMonad hiding (mapAndUnzipM)
30 import Control.Monad ( liftM, liftM2, mapAndUnzipM )
32 vectorise :: HscEnv -> ModGuts -> IO ModGuts
33 vectorise hsc_env guts
34 | not (Opt_Vectorise `dopt` dflags) = return guts
37 showPass dflags "Vectorisation"
39 let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
40 Just (info', guts') <- initV hsc_env guts info (vectModule guts)
41 endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
42 return $ guts' { mg_vect_info = info' }
44 dflags = hsc_dflags hsc_env
46 vectModule :: ModGuts -> VM ModGuts
47 vectModule guts = return guts
49 -- ----------------------------------------------------------------------------
52 vectBndr :: Var -> VM (Var, Var)
55 vty <- vectType (idType v)
57 let vv = v `Id.setIdType` vty
58 lv = v `Id.setIdType` lty
62 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (Var vv, Var lv) }
64 vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
68 (vv, lv) <- vectBndr v
72 vectBndrsIn :: [Var] -> VM a -> VM ([Var], [Var], a)
76 (vvs, lvs) <- mapAndUnzipM vectBndr vs
80 -- ----------------------------------------------------------------------------
83 replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
87 rep <- builtin replicatePAVar
88 return $ mkApps (Var rep) [Type ty, pa, expr, len]
92 capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
93 capply (vfn, lfn) (varg, larg)
95 apply <- builtin applyClosureVar
96 applyP <- builtin applyClosurePVar
97 return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
98 mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
101 (arg_ty, res_ty) = splitClosureTy fn_ty
103 vectVar :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
104 vectVar lc v = local v `orElseV` global v
106 local v = maybeV (readLEnv $ \env -> lookupVarEnv (local_vars env) v)
108 vexpr <- maybeV (readGEnv $ \env -> lookupVarEnv (global_vars env) v)
109 lexpr <- replicateP vexpr lc
110 return (vexpr, lexpr)
112 vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
113 vectExpr lc (_, AnnType ty)
116 return (Type vty, Type vty)
117 vectExpr lc (_, AnnVar v) = vectVar lc v
118 vectExpr lc (_, AnnLit lit)
121 lexpr <- replicateP vexpr lc
122 return (vexpr, lexpr)
123 vectExpr lc (_, AnnNote note expr)
125 (vexpr, lexpr) <- vectExpr lc expr
126 return (Note note vexpr, Note note lexpr)
127 vectExpr lc (_, AnnApp fn arg)
129 fn' <- vectExpr lc fn
130 arg' <- vectExpr lc arg
132 vectExpr lc (_, AnnCase expr bndr ty alts)
133 = panic "vectExpr: case"
134 vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
136 (vrhs, lrhs) <- vectExpr lc rhs
137 (vbndr, lbndr, (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
138 return (Let (NonRec vbndr vrhs) vbody,
139 Let (NonRec lbndr lrhs) lbody)
140 vectExpr lc (_, AnnLet (AnnRec prs) body)
142 (vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
143 return (Let (Rec (zip vbndrs vrhss)) vbody,
144 Let (Rec (zip lbndrs lrhss)) lbody)
146 (bndrs, rhss) = unzip prs
149 (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
150 (vbody, lbody) <- vectExpr lc body
151 return (vrhss, vbody, lrhss, lbody)
152 vectExpr lc (_, AnnLam bndr body)
155 pa_ty <- paArgType' (TyVarTy bndr) (tyVarKind bndr)
156 pa_var <- newLocalVar FSLIT("dPA") pa_ty
157 (vbody, lbody) <- localV
159 extendTyVarPA bndr (Var pa_var)
160 -- FIXME: what about shadowing here (bndr in lc)?
162 return (mkLams [bndr, pa_var] vbody,
163 mkLams [bndr, pa_var] lbody)
165 -- ----------------------------------------------------------------------------
168 paArgType :: Type -> Kind -> VM (Maybe Type)
170 | Just k' <- kindView k = paArgType ty k'
172 -- Here, we assume that for a kind (k1 -> k2) to be valid, k1 and k2 can only
173 -- be made up of * and (->), i.e., they can't be coercion kinds or #.
174 paArgType ty (FunTy k1 k2)
176 tv <- newTyVar FSLIT("a") k1
177 ty1 <- paArgType' (TyVarTy tv) k1
178 ty2 <- paArgType' (AppTy ty (TyVarTy tv)) k2
179 return . Just $ ForAllTy tv (FunTy ty1 ty2)
184 tc <- builtin paDictTyCon
185 return . Just $ TyConApp tc [ty]
190 paArgType' :: Type -> Kind -> VM Type
195 Just ty' -> return ty'
196 Nothing -> pprPanic "paArgType'" (ppr ty)
198 paOfTyCon :: TyCon -> VM CoreExpr
199 -- FIXME: just for now
200 paOfTyCon tc = maybeV (readGEnv $ \env -> lookupNameEnv (global_tycon_pa env) (tyConName tc))
202 paOfType :: Type -> VM CoreExpr
203 paOfType ty | Just ty' <- coreView ty = paOfType ty'
205 paOfType (TyVarTy tv) = maybeV (readLEnv $ \env -> lookupVarEnv (local_tyvar_pa env) tv)
206 paOfType (AppTy ty1 ty2)
210 return $ mkApps e1 [Type ty2, e2]
211 paOfType (TyConApp tc tys)
214 es <- mapM paOfType tys
215 return $ mkApps e [arg | (t,e) <- zip tys es, arg <- [Type t, e]]
216 paOfType (FunTy ty1 ty2) = paOfType (TyConApp funTyCon [ty1,ty2])
217 paOfType t@(ForAllTy tv ty) = pprPanic "paOfType:" (ppr t)
218 paOfType ty = pprPanic "paOfType:" (ppr ty)
222 -- ----------------------------------------------------------------------------
225 vectTyCon :: TyCon -> VM TyCon
227 | isFunTyCon tc = builtin closureTyCon
228 | isBoxedTupleTyCon tc = return tc
229 | isUnLiftedTyCon tc = return tc
233 Just tc' -> return tc'
235 -- FIXME: just for now
236 Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
238 vectType :: Type -> VM Type
239 vectType ty | Just ty' <- coreView ty = vectType ty
240 vectType (TyVarTy tv) = return $ TyVarTy tv
241 vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
242 vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
243 vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
244 (mapM vectType [ty1,ty2])
245 vectType (ForAllTy tv ty)
247 r <- paArgType (TyVarTy tv) (tyVarKind tv)
249 return . ForAllTy tv $ case r of { Just paty -> FunTy paty ty'; Nothing -> ty' }
251 vectType ty = pprPanic "vectType:" (ppr ty)
253 isClosureTyCon :: TyCon -> Bool
254 isClosureTyCon tc = tyConUnique tc == closureTyConKey
256 splitClosureTy :: Type -> (Type, Type)
258 | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty
262 | otherwise = pprPanic "splitClosureTy" (ppr ty)
264 mkPArrayTy :: Type -> VM Type
266 tc <- builtin parrayTyCon
267 return $ TyConApp tc [ty]