1 module Vectorise( vectorise )
4 #include "HsVersions.h"
14 import CoreLint ( showPass, endPass )
18 import SimplMonad ( SimplCount, zeroSimplCount )
19 import Rules ( RuleBase )
23 import FamInstEnv ( extendFamInstEnvList )
24 import InstEnv ( extendInstEnvList )
28 import Name ( mkSysTvName, getName )
31 import MkId ( unwrapFamInstScrut )
34 import DsMonad hiding (mapAndUnzipM)
35 import DsUtils ( mkCoreTup, mkCoreTupTy )
37 import Literal ( Literal )
40 import TysPrim ( intPrimTy )
41 import BasicTypes ( Boxity(..) )
45 import Control.Monad ( liftM, liftM2, mapAndUnzipM )
47 vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
48 -> IO (SimplCount, ModGuts)
49 vectorise hsc_env _ _ guts
51 showPass dflags "Vectorisation"
53 let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
54 Just (info', guts') <- initV hsc_env guts info (vectModule guts)
55 endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
56 return (zeroSimplCount dflags, guts' { mg_vect_info = info' })
58 dflags = hsc_dflags hsc_env
60 vectModule :: ModGuts -> VM ModGuts
63 (types', fam_insts, pa_insts) <- vectTypeEnv (mg_types guts)
65 let insts = map painstInstance pa_insts
66 fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
67 inst_env' = extendInstEnvList (mg_inst_env guts) insts
68 updGEnv (setInstEnvs inst_env' fam_inst_env')
70 dicts <- mapM buildPADict pa_insts
71 binds' <- mapM vectTopBind (mg_binds guts)
72 return $ guts { mg_types = types'
73 , mg_binds = Rec (concat dicts) : binds'
74 , mg_inst_env = inst_env'
75 , mg_fam_inst_env = fam_inst_env'
76 , mg_insts = mg_insts guts ++ insts
77 , mg_fam_insts = mg_fam_insts guts ++ fam_insts
80 vectTopBind :: CoreBind -> VM CoreBind
81 vectTopBind b@(NonRec var expr)
83 var' <- vectTopBinder var
84 expr' <- vectTopRhs expr
86 return . Rec $ (var, expr) : (var', expr') : hs
90 vectTopBind b@(Rec bs)
92 vars' <- mapM vectTopBinder vars
93 exprs' <- mapM vectTopRhs exprs
95 return . Rec $ bs ++ zip vars' exprs' ++ hs
99 (vars, exprs) = unzip bs
101 vectTopBinder :: Var -> VM Var
104 vty <- vectType (idType var)
105 name <- cloneName mkVectOcc (getName var)
106 let var' | isExportedId var = Id.mkExportedLocalId name vty
107 | otherwise = Id.mkLocalId name vty
108 defGlobalVar var var'
111 vectTopRhs :: CoreExpr -> VM CoreExpr
112 vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
114 -- ----------------------------------------------------------------------------
117 vectBndr :: Var -> VM VVar
120 vty <- vectType (idType v)
121 lty <- mkPArrayType vty
122 let vv = v `Id.setIdType` vty
123 lv = v `Id.setIdType` lty
124 updLEnv (mapTo vv lv)
127 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (vv, lv) }
129 vectBndrIn :: Var -> VM a -> VM (VVar, a)
137 vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a)
141 vvs <- mapM vectBndr vs
145 -- ----------------------------------------------------------------------------
148 capply :: VExpr -> VExpr -> VM VExpr
149 capply (vfn, lfn) (varg, larg)
151 apply <- builtin applyClosureVar
152 applyP <- builtin applyClosurePVar
153 return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
154 mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
157 (arg_ty, res_ty) = splitClosureTy fn_ty
159 vectVar :: Var -> Var -> VM VExpr
164 Local (vv,lv) -> return (Var vv, Var lv)
167 lexpr <- replicatePA vexpr (Var lc)
168 return (vexpr, lexpr)
170 vectPolyVar :: Var -> Var -> [Type] -> VM VExpr
173 vtys <- mapM vectType tys
176 Local (vv, lv) -> liftM2 (,) (polyApply (Var vv) vtys)
177 (polyApply (Var lv) vtys)
179 vexpr <- polyApply (Var poly) vtys
180 lexpr <- replicatePA vexpr (Var lc)
181 return (vexpr, lexpr)
183 vectLiteral :: Var -> Literal -> VM VExpr
186 lexpr <- replicatePA (Lit lit) (Var lc)
187 return (Lit lit, lexpr)
189 vectPolyExpr :: Var -> CoreExprWithFVs -> VM VExpr
191 = polyAbstract tvs $ \abstract ->
192 -- FIXME: shadowing (tvs in lc)
194 mono' <- vectExpr lc mono
195 return $ mapVect abstract mono'
197 (tvs, mono) = collectAnnTypeBinders expr
199 vectExpr :: Var -> CoreExprWithFVs -> VM VExpr
200 vectExpr lc (_, AnnType ty)
201 = liftM vType (vectType ty)
203 vectExpr lc (_, AnnVar v) = vectVar lc v
205 vectExpr lc (_, AnnLit lit) = vectLiteral lc lit
207 vectExpr lc (_, AnnNote note expr)
208 = liftM (vNote note) (vectExpr lc expr)
210 vectExpr lc e@(_, AnnApp _ arg)
212 = vectTyAppExpr lc fn tys
214 (fn, tys) = collectAnnTypeArgs e
216 vectExpr lc (_, AnnApp fn arg)
218 fn' <- vectExpr lc fn
219 arg' <- vectExpr lc arg
222 vectExpr lc (_, AnnCase expr bndr ty alts)
223 = panic "vectExpr: case"
225 vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
227 vrhs <- vectPolyExpr lc rhs
228 (vbndr, vbody) <- vectBndrIn bndr (vectExpr lc body)
229 return $ vLet (vNonRec vbndr vrhs) vbody
231 vectExpr lc (_, AnnLet (AnnRec bs) body)
233 (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs
235 (mapM (vectExpr lc) rhss)
236 (vectPolyExpr lc body)
237 return $ vLet (vRec vbndrs vrhss) vbody
239 (bndrs, rhss) = unzip bs
241 vectExpr lc e@(_, AnnLam bndr body)
242 | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
244 vectExpr lc (fvs, AnnLam bndr body)
246 tyvars <- localTyVars
247 info <- mkCEnvInfo fvs bndr body
248 (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
250 vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
251 lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
253 let (venv, lenv) = mkClosureEnvs info (Var lc)
255 let env_ty = cenv_vty info
257 pa_dict <- paDictOfType env_ty
259 arg_ty <- vectType (varType bndr)
260 res_ty <- vectType (exprType $ deAnnotate body)
262 -- FIXME: move the functions to the top level
263 mono_vfn <- polyApply (Var vfn_var) (mkTyVarTys tyvars)
264 mono_lfn <- polyApply (Var lfn_var) (mkTyVarTys tyvars)
266 mk_clo <- builtin mkClosureVar
267 mk_cloP <- builtin mkClosurePVar
269 let vclo = Var mk_clo `mkTyApps` [arg_ty, res_ty, env_ty]
270 `mkApps` [pa_dict, mono_vfn, mono_lfn, venv]
272 lclo = Var mk_cloP `mkTyApps` [arg_ty, res_ty, env_ty]
273 `mkApps` [pa_dict, mono_vfn, mono_lfn, lenv]
277 data CEnvInfo = CEnvInfo {
279 , cenv_values :: [(CoreExpr, CoreExpr)]
282 , cenv_repr_tycon :: TyCon
283 , cenv_repr_tyargs :: [Type]
284 , cenv_repr_datacon :: DataCon
287 mkCEnvInfo :: VarSet -> Var -> CoreExprWithFVs -> VM CEnvInfo
288 mkCEnvInfo fvs arg body
290 locals <- readLEnv local_vars
293 [(var, (Var v, Var v')) | var <- varSetElems fvs
294 , Just (v,v') <- [lookupVarEnv locals var]]
295 vtys <- mapM (vectType . varType) vars
297 (vty, repr_tycon, repr_tyargs, repr_datacon) <- mk_env_ty vtys
298 lty <- mkPArrayType vty
305 , cenv_repr_tycon = repr_tycon
306 , cenv_repr_tyargs = repr_tyargs
307 , cenv_repr_datacon = repr_datacon
311 = return (vty, error "absent cinfo_repr_tycon"
312 , error "absent cinfo_repr_tyargs"
313 , error "absent cinfo_repr_datacon")
317 let ty = mkCoreTupTy vtys
318 (repr_tc, repr_tyargs) <- lookupPArrayFamInst ty
319 let [repr_con] = tyConDataCons repr_tc
320 return (ty, repr_tc, repr_tyargs, repr_con)
324 mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr)
325 mkClosureEnvs info lc
327 = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info))
328 [lc, Var unitDataConId])
330 | [(vval, lval)] <- vals
334 = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
335 `mkTyApps` cenv_repr_tyargs info
336 `mkApps` (lc : lvals))
339 vals = cenv_values info
340 (vvals, lvals) = unzip vals
342 mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs
343 -> VM (CoreExpr, CoreExpr)
344 mkClosureFns info tyvars arg body
346 . polyAbstract tyvars
349 (vfn, lfn) <- mkClosureMonoFns info arg body
350 return (mk_tlams vfn, mk_tlams lfn)
352 mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
353 mkClosureMonoFns info arg body
355 lc_bndr <- newLocalVar FSLIT("lc") intPrimTy
356 (bndrs, (vbody, lbody))
357 <- vectBndrsIn (arg : cenv_vars info)
358 (vectExpr lc_bndr body)
359 let (varg : vbndrs, larg : lbndrs) = unzip bndrs
361 venv_bndr <- newLocalVar FSLIT("env") vty
362 lenv_bndr <- newLocalVar FSLIT("env") lty
364 let vcase = bind_venv (Var venv_bndr) vbody vbndrs
365 lcase <- bind_lenv (Var lenv_bndr) lbody lc_bndr lbndrs
366 return (mkLams [venv_bndr, varg] vcase, mkLams [lenv_bndr, larg] lcase)
371 arity = length (cenv_vars info)
373 bind_venv venv vbody [] = vbody
374 bind_venv venv vbody [vbndr] = Let (NonRec vbndr venv) vbody
375 bind_venv venv vbody vbndrs
376 = Case venv (mkWildId vty) (exprType vbody)
377 [(DataAlt (tupleCon Boxed arity), vbndrs, vbody)]
379 bind_lenv lenv lbody lc_bndr [lbndr]
381 len <- lengthPA (Var lbndr)
382 return . Let (NonRec lbndr lenv)
386 [(DEFAULT, [], lbody)]
388 bind_lenv lenv lbody lc_bndr lbndrs
389 = let scrut = unwrapFamInstScrut (cenv_repr_tycon info)
390 (cenv_repr_tyargs info)
392 lbndrs' | null lbndrs = [mkWildId unitTy]
397 (mkWildId (exprType scrut))
399 [(DataAlt (cenv_repr_datacon info), lc_bndr : lbndrs', lbody)]
401 vectTyAppExpr :: Var -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
402 vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
403 vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)