1 module Vectorise( vectorise )
4 #include "HsVersions.h"
12 import CoreLint ( showPass, endPass )
16 import SimplMonad ( SimplCount, zeroSimplCount )
17 import Rules ( RuleBase )
25 import Name ( mkSysTvName, getName )
28 import MkId ( unwrapFamInstScrut )
31 import DsMonad hiding (mapAndUnzipM)
32 import DsUtils ( mkCoreTup, mkCoreTupTy )
36 import BasicTypes ( Boxity(..) )
40 import Control.Monad ( liftM, liftM2, mapAndUnzipM, zipWithM_ )
41 import Data.Maybe ( maybeToList )
43 vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
44 -> IO (SimplCount, ModGuts)
45 vectorise hsc_env _ _ guts
47 showPass dflags "Vectorisation"
49 let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
50 Just (info', guts') <- initV hsc_env guts info (vectModule guts)
51 endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
52 return (zeroSimplCount dflags, guts' { mg_vect_info = info' })
54 dflags = hsc_dflags hsc_env
56 vectModule :: ModGuts -> VM ModGuts
59 binds' <- mapM vectTopBind (mg_binds guts)
60 return $ guts { mg_binds = binds' }
62 vectTopBind :: CoreBind -> VM CoreBind
63 vectTopBind b@(NonRec var expr)
65 var' <- vectTopBinder var
66 expr' <- vectTopRhs expr
68 return . Rec $ (var, expr) : (var', expr') : hs
72 vectTopBind b@(Rec bs)
74 vars' <- mapM vectTopBinder vars
75 exprs' <- mapM vectTopRhs exprs
77 return . Rec $ bs ++ zip vars' exprs' ++ hs
81 (vars, exprs) = unzip bs
83 vectTopBinder :: Var -> VM Var
86 vty <- vectType (idType var)
87 name <- cloneName mkVectOcc (getName var)
88 let var' | isExportedId var = Id.mkExportedLocalId name vty
89 | otherwise = Id.mkLocalId name vty
93 vectTopRhs :: CoreExpr -> VM CoreExpr
94 vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
96 -- ----------------------------------------------------------------------------
99 vectBndr :: Var -> VM (Var, Var)
102 vty <- vectType (idType v)
103 lty <- mkPArrayType vty
104 let vv = v `Id.setIdType` vty
105 lv = v `Id.setIdType` lty
106 updLEnv (mapTo vv lv)
109 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (Var vv, Var lv) }
111 vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
115 (vv, lv) <- vectBndr v
119 vectBndrsIn :: [Var] -> VM a -> VM ([Var], [Var], a)
123 (vvs, lvs) <- mapAndUnzipM vectBndr vs
127 -- ----------------------------------------------------------------------------
130 replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
133 dict <- paDictOfType ty
134 rep <- builtin replicatePAVar
135 return $ mkApps (Var rep) [Type ty, dict, expr, len]
139 capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
140 capply (vfn, lfn) (varg, larg)
142 apply <- builtin applyClosureVar
143 applyP <- builtin applyClosurePVar
144 return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
145 mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
148 (arg_ty, res_ty) = splitClosureTy fn_ty
150 vectVar :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
155 Local es -> return es
157 lexpr <- replicateP vexpr lc
158 return (vexpr, lexpr)
160 vectPolyVar :: CoreExpr -> Var -> [Type] -> VM (CoreExpr, CoreExpr)
165 Local (vexpr, lexpr) -> liftM2 (,) (mk_app vexpr) (mk_app lexpr)
168 lexpr <- replicateP vexpr lc
169 return (vexpr, lexpr)
171 mk_app e = applyToTypes e =<< mapM vectType tys
173 abstractOverTyVars :: [TyVar] -> ((CoreExpr -> CoreExpr) -> VM a) -> VM a
174 abstractOverTyVars tvs p
176 mdicts <- mapM mk_dict_var tvs
177 zipWithM_ (\tv -> maybe (deleteTyVarPA tv) (extendTyVarPA tv . Var)) tvs mdicts
181 r <- paDictArgType tv
183 Just ty -> liftM Just (newLocalVar FSLIT("dPA") ty)
184 Nothing -> return Nothing
186 mk_lams mdicts = mkLams [arg | (tv, mdict) <- zip tvs mdicts
187 , arg <- tv : maybeToList mdict]
189 applyToTypes :: CoreExpr -> [Type] -> VM CoreExpr
190 applyToTypes expr tys
192 dicts <- mapM paDictOfType tys
193 return $ mkApps expr [arg | (ty, dict) <- zip tys dicts
194 , arg <- [Type ty, dict]]
197 vectPolyExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
200 . abstractOverTyVars tvs $ \mk_lams ->
201 -- FIXME: shadowing (tvs in lc)
203 (vmono, lmono) <- vectExpr lc mono
204 return $ (mk_lams vmono, mk_lams lmono)
206 (tvs, mono) = collectAnnTypeBinders expr
208 vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
209 vectExpr lc (_, AnnType ty)
212 return (Type vty, Type vty)
214 vectExpr lc (_, AnnVar v) = vectVar lc v
216 vectExpr lc (_, AnnLit lit)
219 lexpr <- replicateP vexpr lc
220 return (vexpr, lexpr)
222 vectExpr lc (_, AnnNote note expr)
224 (vexpr, lexpr) <- vectExpr lc expr
225 return (Note note vexpr, Note note lexpr)
227 vectExpr lc e@(_, AnnApp _ arg)
229 = vectTyAppExpr lc fn tys
231 (fn, tys) = collectAnnTypeArgs e
233 vectExpr lc (_, AnnApp fn arg)
235 fn' <- vectExpr lc fn
236 arg' <- vectExpr lc arg
239 vectExpr lc (_, AnnCase expr bndr ty alts)
240 = panic "vectExpr: case"
242 vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
244 (vrhs, lrhs) <- vectPolyExpr lc rhs
245 (vbndr, lbndr, (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
246 return (Let (NonRec vbndr vrhs) vbody,
247 Let (NonRec lbndr lrhs) lbody)
249 vectExpr lc (_, AnnLet (AnnRec prs) body)
251 (vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
252 return (Let (Rec (zip vbndrs vrhss)) vbody,
253 Let (Rec (zip lbndrs lrhss)) lbody)
255 (bndrs, rhss) = unzip prs
258 (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
259 (vbody, lbody) <- vectPolyExpr lc body
260 return (vrhss, vbody, lrhss, lbody)
262 vectExpr lc e@(_, AnnLam bndr body)
263 | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
265 vectExpr lc (fvs, AnnLam bndr body)
267 let tyvars = filter isTyVar (varSetElems fvs)
268 info <- mkCEnvInfo fvs bndr body
269 (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
271 vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
272 lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
274 let (venv, lenv) = mkClosureEnvs info lc
276 let env_ty = cenv_vty info
278 pa_dict <- paDictOfType env_ty
280 arg_ty <- vectType (varType bndr)
281 res_ty <- vectType (exprType $ deAnnotate body)
283 -- FIXME: move the functions to the top level
284 mono_vfn <- applyToTypes (Var vfn_var) (map TyVarTy tyvars)
285 mono_lfn <- applyToTypes (Var lfn_var) (map TyVarTy tyvars)
287 mk_clo <- builtin mkClosureVar
288 mk_cloP <- builtin mkClosurePVar
290 let vclo = Var mk_clo `mkTyApps` [arg_ty, res_ty, env_ty]
291 `mkApps` [pa_dict, mono_vfn, mono_lfn, venv]
293 lclo = Var mk_cloP `mkTyApps` [arg_ty, res_ty, env_ty]
294 `mkApps` [pa_dict, mono_vfn, mono_lfn, lenv]
299 data CEnvInfo = CEnvInfo {
301 , cenv_values :: [(CoreExpr, CoreExpr)]
304 , cenv_repr_tycon :: TyCon
305 , cenv_repr_tyargs :: [Type]
306 , cenv_repr_datacon :: DataCon
309 mkCEnvInfo :: VarSet -> Var -> CoreExprWithFVs -> VM CEnvInfo
310 mkCEnvInfo fvs arg body
312 locals <- readLEnv local_vars
315 [(var, val) | var <- varSetElems fvs
316 , Just val <- [lookupVarEnv locals var]]
317 vtys <- mapM (vectType . varType) vars
319 (vty, repr_tycon, repr_tyargs, repr_datacon) <- mk_env_ty vtys
320 lty <- mkPArrayType vty
327 , cenv_repr_tycon = repr_tycon
328 , cenv_repr_tyargs = repr_tyargs
329 , cenv_repr_datacon = repr_datacon
333 = return (vty, error "absent cinfo_repr_tycon"
334 , error "absent cinfo_repr_tyargs"
335 , error "absent cinfo_repr_datacon")
339 let ty = mkCoreTupTy vtys
340 (repr_tc, repr_tyargs) <- lookupPArrayFamInst ty
341 let [repr_con] = tyConDataCons repr_tc
342 return (ty, repr_tc, repr_tyargs, repr_con)
346 mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr)
347 mkClosureEnvs info lc
349 = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info))
350 [lc, Var unitDataConId])
352 | [(vval, lval)] <- vals
356 = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
357 `mkTyApps` cenv_repr_tyargs info
358 `mkApps` (lc : lvals))
361 vals = cenv_values info
362 (vvals, lvals) = unzip vals
364 mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs
365 -> VM (CoreExpr, CoreExpr)
366 mkClosureFns info tyvars arg body
368 . abstractOverTyVars tyvars
371 (vfn, lfn) <- mkClosureMonoFns info arg body
372 return (mk_tlams vfn, mk_tlams lfn)
374 mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
375 mkClosureMonoFns info arg body
377 lc_bndr <- newLocalVar FSLIT("lc") intTy
378 (varg : vbndrs, larg : lbndrs, (vbody, lbody))
379 <- vectBndrsIn (arg : cenv_vars info)
380 (vectExpr (Var lc_bndr) body)
382 venv_bndr <- newLocalVar FSLIT("env") vty
383 lenv_bndr <- newLocalVar FSLIT("env") lty
385 let vcase = bind_venv (Var venv_bndr) vbody vbndrs
386 lcase <- bind_lenv (Var lenv_bndr) lbody lc_bndr lbndrs
387 return (mkLams [venv_bndr, varg] vcase, mkLams [lenv_bndr, larg] lcase)
392 arity = length (cenv_vars info)
394 bind_venv venv vbody [] = vbody
395 bind_venv venv vbody [vbndr] = Let (NonRec vbndr venv) vbody
396 bind_venv venv vbody vbndrs
397 = Case venv (mkWildId vty) (exprType vbody)
398 [(DataAlt (tupleCon Boxed arity), vbndrs, vbody)]
400 bind_lenv lenv lbody lc_bndr [lbndr]
402 lengthPA <- builtin lengthPAVar
403 return . Let (NonRec lbndr lenv)
404 $ Case (mkApps (Var lengthPA) [Type vty, (Var lbndr)])
407 [(DEFAULT, [], lbody)]
409 bind_lenv lenv lbody lc_bndr lbndrs
411 $ Case (unwrapFamInstScrut (cenv_repr_tycon info)
412 (cenv_repr_tyargs info)
416 [(DataAlt (cenv_repr_datacon info), lc_bndr : lbndrs, lbody)]
418 vectTyAppExpr :: CoreExpr -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
419 vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
420 vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
422 -- ----------------------------------------------------------------------------
425 vectTyCon :: TyCon -> VM TyCon
427 | isFunTyCon tc = builtin closureTyCon
428 | isBoxedTupleTyCon tc = return tc
429 | isUnLiftedTyCon tc = return tc
433 Just tc' -> return tc'
435 -- FIXME: just for now
436 Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
438 vectType :: Type -> VM Type
439 vectType ty | Just ty' <- coreView ty = vectType ty'
440 vectType (TyVarTy tv) = return $ TyVarTy tv
441 vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
442 vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
443 vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
444 (mapM vectType [ty1,ty2])
445 vectType (ForAllTy tv ty)
447 r <- paDictArgType tv
449 return $ ForAllTy tv (wrap r ty')
452 wrap (Just pa_ty) = FunTy pa_ty
454 vectType ty = pprPanic "vectType:" (ppr ty)