1 module Vectorise( vectorise )
4 #include "HsVersions.h"
13 import CoreLint ( showPass, endPass )
17 import SimplMonad ( SimplCount, zeroSimplCount )
18 import Rules ( RuleBase )
22 import FamInstEnv ( extendFamInstEnvList )
23 import InstEnv ( extendInstEnvList )
27 import Name ( mkSysTvName, getName )
30 import MkId ( unwrapFamInstScrut )
33 import DsMonad hiding (mapAndUnzipM)
34 import DsUtils ( mkCoreTup, mkCoreTupTy )
38 import TysPrim ( intPrimTy )
39 import BasicTypes ( Boxity(..) )
43 import Control.Monad ( liftM, liftM2, mapAndUnzipM )
45 vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
46 -> IO (SimplCount, ModGuts)
47 vectorise hsc_env _ _ guts
49 showPass dflags "Vectorisation"
51 let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
52 Just (info', guts') <- initV hsc_env guts info (vectModule guts)
53 endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
54 return (zeroSimplCount dflags, guts' { mg_vect_info = info' })
56 dflags = hsc_dflags hsc_env
58 vectModule :: ModGuts -> VM ModGuts
61 (types', fam_insts, insts) <- vectTypeEnv (mg_types guts)
63 let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
64 inst_env' = extendInstEnvList (mg_inst_env guts) insts
65 updGEnv (setInstEnvs inst_env' fam_inst_env')
67 binds' <- mapM vectTopBind (mg_binds guts)
68 return $ guts { mg_types = types'
70 , mg_inst_env = inst_env'
71 , mg_fam_inst_env = fam_inst_env'
72 , mg_insts = mg_insts guts ++ insts
73 , mg_fam_insts = mg_fam_insts guts ++ fam_insts
76 vectTopBind :: CoreBind -> VM CoreBind
77 vectTopBind b@(NonRec var expr)
79 var' <- vectTopBinder var
80 expr' <- vectTopRhs expr
82 return . Rec $ (var, expr) : (var', expr') : hs
86 vectTopBind b@(Rec bs)
88 vars' <- mapM vectTopBinder vars
89 exprs' <- mapM vectTopRhs exprs
91 return . Rec $ bs ++ zip vars' exprs' ++ hs
95 (vars, exprs) = unzip bs
97 vectTopBinder :: Var -> VM Var
100 vty <- vectType (idType var)
101 name <- cloneName mkVectOcc (getName var)
102 let var' | isExportedId var = Id.mkExportedLocalId name vty
103 | otherwise = Id.mkLocalId name vty
104 defGlobalVar var var'
107 vectTopRhs :: CoreExpr -> VM CoreExpr
108 vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
110 -- ----------------------------------------------------------------------------
113 vectBndr :: Var -> VM (Var, Var)
116 vty <- vectType (idType v)
117 lty <- mkPArrayType vty
118 let vv = v `Id.setIdType` vty
119 lv = v `Id.setIdType` lty
120 updLEnv (mapTo vv lv)
123 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (Var vv, Var lv) }
125 vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
129 (vv, lv) <- vectBndr v
133 vectBndrsIn :: [Var] -> VM a -> VM ([Var], [Var], a)
137 (vvs, lvs) <- mapAndUnzipM vectBndr vs
141 -- ----------------------------------------------------------------------------
144 capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
145 capply (vfn, lfn) (varg, larg)
147 apply <- builtin applyClosureVar
148 applyP <- builtin applyClosurePVar
149 return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
150 mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
153 (arg_ty, res_ty) = splitClosureTy fn_ty
155 vectVar :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
160 Local es -> return es
162 lexpr <- replicatePA vexpr lc
163 return (vexpr, lexpr)
165 vectPolyVar :: CoreExpr -> Var -> [Type] -> VM (CoreExpr, CoreExpr)
170 Local (vexpr, lexpr) -> liftM2 (,) (mk_app vexpr) (mk_app lexpr)
173 lexpr <- replicatePA vexpr lc
174 return (vexpr, lexpr)
176 mk_app e = applyToTypes e =<< mapM vectType tys
178 vectPolyExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
181 . abstractOverTyVars tvs $ \mk_lams ->
182 -- FIXME: shadowing (tvs in lc)
184 (vmono, lmono) <- vectExpr lc mono
185 return $ (mk_lams vmono, mk_lams lmono)
187 (tvs, mono) = collectAnnTypeBinders expr
189 vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
190 vectExpr lc (_, AnnType ty)
193 return (Type vty, Type vty)
195 vectExpr lc (_, AnnVar v) = vectVar lc v
197 vectExpr lc (_, AnnLit lit)
200 lexpr <- replicatePA vexpr lc
201 return (vexpr, lexpr)
203 vectExpr lc (_, AnnNote note expr)
205 (vexpr, lexpr) <- vectExpr lc expr
206 return (Note note vexpr, Note note lexpr)
208 vectExpr lc e@(_, AnnApp _ arg)
210 = vectTyAppExpr lc fn tys
212 (fn, tys) = collectAnnTypeArgs e
214 vectExpr lc (_, AnnApp fn arg)
216 fn' <- vectExpr lc fn
217 arg' <- vectExpr lc arg
220 vectExpr lc (_, AnnCase expr bndr ty alts)
221 = panic "vectExpr: case"
223 vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
225 (vrhs, lrhs) <- vectPolyExpr lc rhs
226 (vbndr, lbndr, (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
227 return (Let (NonRec vbndr vrhs) vbody,
228 Let (NonRec lbndr lrhs) lbody)
230 vectExpr lc (_, AnnLet (AnnRec prs) body)
232 (vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
233 return (Let (Rec (zip vbndrs vrhss)) vbody,
234 Let (Rec (zip lbndrs lrhss)) lbody)
236 (bndrs, rhss) = unzip prs
239 (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
240 (vbody, lbody) <- vectPolyExpr lc body
241 return (vrhss, vbody, lrhss, lbody)
243 vectExpr lc e@(_, AnnLam bndr body)
244 | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
246 vectExpr lc (fvs, AnnLam bndr body)
248 tyvars <- localTyVars
249 info <- mkCEnvInfo fvs bndr body
250 (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
252 vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
253 lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
255 let (venv, lenv) = mkClosureEnvs info lc
257 let env_ty = cenv_vty info
259 pa_dict <- paDictOfType env_ty
261 arg_ty <- vectType (varType bndr)
262 res_ty <- vectType (exprType $ deAnnotate body)
264 -- FIXME: move the functions to the top level
265 mono_vfn <- applyToTypes (Var vfn_var) (mkTyVarTys tyvars)
266 mono_lfn <- applyToTypes (Var lfn_var) (mkTyVarTys tyvars)
268 mk_clo <- builtin mkClosureVar
269 mk_cloP <- builtin mkClosurePVar
271 let vclo = Var mk_clo `mkTyApps` [arg_ty, res_ty, env_ty]
272 `mkApps` [pa_dict, mono_vfn, mono_lfn, venv]
274 lclo = Var mk_cloP `mkTyApps` [arg_ty, res_ty, env_ty]
275 `mkApps` [pa_dict, mono_vfn, mono_lfn, lenv]
280 data CEnvInfo = CEnvInfo {
282 , cenv_values :: [(CoreExpr, CoreExpr)]
285 , cenv_repr_tycon :: TyCon
286 , cenv_repr_tyargs :: [Type]
287 , cenv_repr_datacon :: DataCon
290 mkCEnvInfo :: VarSet -> Var -> CoreExprWithFVs -> VM CEnvInfo
291 mkCEnvInfo fvs arg body
293 locals <- readLEnv local_vars
296 [(var, val) | var <- varSetElems fvs
297 , Just val <- [lookupVarEnv locals var]]
298 vtys <- mapM (vectType . varType) vars
300 (vty, repr_tycon, repr_tyargs, repr_datacon) <- mk_env_ty vtys
301 lty <- mkPArrayType vty
308 , cenv_repr_tycon = repr_tycon
309 , cenv_repr_tyargs = repr_tyargs
310 , cenv_repr_datacon = repr_datacon
314 = return (vty, error "absent cinfo_repr_tycon"
315 , error "absent cinfo_repr_tyargs"
316 , error "absent cinfo_repr_datacon")
320 let ty = mkCoreTupTy vtys
321 (repr_tc, repr_tyargs) <- lookupPArrayFamInst ty
322 let [repr_con] = tyConDataCons repr_tc
323 return (ty, repr_tc, repr_tyargs, repr_con)
327 mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr)
328 mkClosureEnvs info lc
330 = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info))
331 [lc, Var unitDataConId])
333 | [(vval, lval)] <- vals
337 = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
338 `mkTyApps` cenv_repr_tyargs info
339 `mkApps` (lc : lvals))
342 vals = cenv_values info
343 (vvals, lvals) = unzip vals
345 mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs
346 -> VM (CoreExpr, CoreExpr)
347 mkClosureFns info tyvars arg body
349 . abstractOverTyVars tyvars
352 (vfn, lfn) <- mkClosureMonoFns info arg body
353 return (mk_tlams vfn, mk_tlams lfn)
355 mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
356 mkClosureMonoFns info arg body
358 lc_bndr <- newLocalVar FSLIT("lc") intPrimTy
359 (varg : vbndrs, larg : lbndrs, (vbody, lbody))
360 <- vectBndrsIn (arg : cenv_vars info)
361 (vectExpr (Var lc_bndr) body)
363 venv_bndr <- newLocalVar FSLIT("env") vty
364 lenv_bndr <- newLocalVar FSLIT("env") lty
366 let vcase = bind_venv (Var venv_bndr) vbody vbndrs
367 lcase <- bind_lenv (Var lenv_bndr) lbody lc_bndr lbndrs
368 return (mkLams [venv_bndr, varg] vcase, mkLams [lenv_bndr, larg] lcase)
373 arity = length (cenv_vars info)
375 bind_venv venv vbody [] = vbody
376 bind_venv venv vbody [vbndr] = Let (NonRec vbndr venv) vbody
377 bind_venv venv vbody vbndrs
378 = Case venv (mkWildId vty) (exprType vbody)
379 [(DataAlt (tupleCon Boxed arity), vbndrs, vbody)]
381 bind_lenv lenv lbody lc_bndr [lbndr]
383 len <- lengthPA (Var lbndr)
384 return . Let (NonRec lbndr lenv)
388 [(DEFAULT, [], lbody)]
390 bind_lenv lenv lbody lc_bndr lbndrs
391 = let scrut = unwrapFamInstScrut (cenv_repr_tycon info)
392 (cenv_repr_tyargs info)
394 lbndrs' | null lbndrs = [mkWildId unitTy]
399 (mkWildId (exprType scrut))
401 [(DataAlt (cenv_repr_datacon info), lc_bndr : lbndrs', lbody)]
403 vectTyAppExpr :: CoreExpr -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
404 vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
405 vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)