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 ( Name, mkSysTvName, getName )
31 import MkId ( unwrapFamInstScrut )
33 import RdrName ( RdrName, mkRdrQual )
34 import Module ( mkModuleNameFS )
36 import DsMonad hiding (mapAndUnzipM)
37 import DsUtils ( mkCoreTup, mkCoreTupTy )
39 import Literal ( Literal )
42 import TysPrim ( intPrimTy )
43 import BasicTypes ( Boxity(..) )
47 import Control.Monad ( liftM, liftM2, zipWithM, mapAndUnzipM )
49 mkNDPVar :: String -> RdrName
50 mkNDPVar s = mkRdrQual nDP_BUILTIN (mkVarOcc s)
52 mkNDPVarFS :: FastString -> RdrName
53 mkNDPVarFS fs = mkRdrQual nDP_BUILTIN (mkVarOccFS fs)
55 builtin_PAs :: [(Name, RdrName)]
57 mk closureTyConName FSLIT("dPA_Clo")
58 , mk intTyConName FSLIT("dPA_Int")
62 mk name fs = (name, mkNDPVarFS fs)
64 tups = mk_tup 0 : map mk_tup [2..3]
65 mk_tup n = (getName $ tupleTyCon Boxed n, mkNDPVar $ "dPA_" ++ show n)
67 vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
68 -> IO (SimplCount, ModGuts)
69 vectorise hsc_env _ _ guts
71 showPass dflags "Vectorisation"
73 let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
74 Just (info', guts') <- initV hsc_env guts info (vectModule guts)
75 endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
76 return (zeroSimplCount dflags, guts' { mg_vect_info = info' })
78 dflags = hsc_dflags hsc_env
80 vectModule :: ModGuts -> VM ModGuts
83 defTyConRdrPAs builtin_PAs
84 (types', fam_insts, tc_binds) <- vectTypeEnv (mg_types guts)
86 let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
87 updGEnv (setFamInstEnv fam_inst_env')
89 -- dicts <- mapM buildPADict pa_insts
90 -- workers <- mapM vectDataConWorkers pa_insts
91 binds' <- mapM vectTopBind (mg_binds guts)
92 return $ guts { mg_types = types'
93 , mg_binds = Rec tc_binds : binds'
94 , mg_fam_inst_env = fam_inst_env'
95 , mg_fam_insts = mg_fam_insts guts ++ fam_insts
98 vectTopBind :: CoreBind -> VM CoreBind
99 vectTopBind b@(NonRec var expr)
101 var' <- vectTopBinder var
102 expr' <- vectTopRhs var expr
104 return . Rec $ (var, expr) : (var', expr') : hs
108 vectTopBind b@(Rec bs)
110 vars' <- mapM vectTopBinder vars
111 exprs' <- zipWithM vectTopRhs vars exprs
113 return . Rec $ bs ++ zip vars' exprs' ++ hs
117 (vars, exprs) = unzip bs
119 vectTopBinder :: Var -> VM Var
122 vty <- vectType (idType var)
123 var' <- cloneId mkVectOcc var vty
124 defGlobalVar var var'
127 vectTopRhs :: Var -> CoreExpr -> VM CoreExpr
130 closedV . liftM vectorised
132 $ vectPolyExpr (freeVars expr)
134 -- ----------------------------------------------------------------------------
137 vectBndr :: Var -> VM VVar
140 vty <- vectType (idType v)
141 lty <- mkPArrayType vty
142 let vv = v `Id.setIdType` vty
143 lv = v `Id.setIdType` lty
144 updLEnv (mapTo vv lv)
147 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (vv, lv) }
149 vectBndrIn :: Var -> VM a -> VM (VVar, a)
157 vectBndrIn' :: Var -> (VVar -> VM a) -> VM (VVar, a)
165 vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a)
169 vvs <- mapM vectBndr vs
173 -- ----------------------------------------------------------------------------
176 vectVar :: Var -> VM VExpr
181 Local (vv,lv) -> return (Var vv, Var lv)
184 lexpr <- liftPA vexpr
185 return (vexpr, lexpr)
187 vectPolyVar :: Var -> [Type] -> VM VExpr
190 vtys <- mapM vectType tys
193 Local (vv, lv) -> liftM2 (,) (polyApply (Var vv) vtys)
194 (polyApply (Var lv) vtys)
196 vexpr <- polyApply (Var poly) vtys
197 lexpr <- liftPA vexpr
198 return (vexpr, lexpr)
200 vectLiteral :: Literal -> VM VExpr
203 lexpr <- liftPA (Lit lit)
204 return (Lit lit, lexpr)
206 vectPolyExpr :: CoreExprWithFVs -> VM VExpr
208 = polyAbstract tvs $ \abstract ->
210 mono' <- vectExpr mono
211 return $ mapVect abstract mono'
213 (tvs, mono) = collectAnnTypeBinders expr
215 vectExpr :: CoreExprWithFVs -> VM VExpr
216 vectExpr (_, AnnType ty)
217 = liftM vType (vectType ty)
219 vectExpr (_, AnnVar v) = vectVar v
221 vectExpr (_, AnnLit lit) = vectLiteral lit
223 vectExpr (_, AnnNote note expr)
224 = liftM (vNote note) (vectExpr expr)
226 vectExpr e@(_, AnnApp _ arg)
228 = vectTyAppExpr fn tys
230 (fn, tys) = collectAnnTypeArgs e
232 vectExpr (_, AnnApp fn arg)
236 mkClosureApp fn' arg'
238 vectExpr (_, AnnCase scrut bndr ty alts)
240 = vectAlgCase scrut bndr ty alts
242 scrut_ty = exprType (deAnnotate scrut)
244 vectExpr (_, AnnCase expr bndr ty alts)
245 = panic "vectExpr: case"
247 vectExpr (_, AnnLet (AnnNonRec bndr rhs) body)
249 vrhs <- localV . inBind bndr $ vectPolyExpr rhs
250 (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
251 return $ vLet (vNonRec vbndr vrhs) vbody
253 vectExpr (_, AnnLet (AnnRec bs) body)
255 (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs
257 (zipWithM vect_rhs bndrs rhss)
259 return $ vLet (vRec vbndrs vrhss) vbody
261 (bndrs, rhss) = unzip bs
263 vect_rhs bndr rhs = localV
267 vectExpr e@(fvs, AnnLam bndr _)
268 | not (isId bndr) = pprPanic "vectExpr" (ppr $ deAnnotate e)
269 | otherwise = vectLam fvs bs body
271 (bs,body) = collectAnnValBinders e
273 vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
276 tyvars <- localTyVars
277 (vs, vvs) <- readLEnv $ \env ->
278 unzip [(var, vv) | var <- varSetElems fvs
279 , Just vv <- [lookupVarEnv (local_vars env) var]]
281 arg_tys <- mapM (vectType . idType) bs
282 res_ty <- vectType (exprType $ deAnnotate body)
284 buildClosures tyvars vvs arg_tys res_ty
285 . hoistPolyVExpr tyvars
287 lc <- builtin liftingContext
288 (vbndrs, vbody) <- vectBndrsIn (vs ++ bs)
290 return $ vLams lc vbndrs vbody
292 vectTyAppExpr :: CoreExprWithFVs -> [Type] -> VM VExpr
293 vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys
294 vectTyAppExpr e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
296 type CoreAltWithFVs = AnnAlt Id VarSet
300 -- case e :: t of v { ... }
304 -- V: let v = e in case v of _ { ... }
305 -- L: let v = e in case v `cast` ... of _ { ... }
307 -- When lifting, we have to do it this way because v must have the type
308 -- [:V(T):] but the scrutinee must be cast to the representation type.
311 -- FIXME: this is too lazy
312 vectAlgCase scrut bndr ty [(DEFAULT, [], body)]
314 vscrut <- vectExpr scrut
316 lty <- mkPArrayType vty
317 (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
318 return $ vCaseDEFAULT vscrut vbndr vty lty vbody
320 vectAlgCase scrut bndr ty [(DataAlt dc, bndrs, body)]
323 lty <- mkPArrayType vty
324 vexpr <- vectExpr scrut
325 (vbndr, (vbndrs, vbody)) <- vectBndrIn bndr
329 (vscrut, arr_tc, arg_tys) <- mkVScrut (vVar vbndr)
330 vect_dc <- maybeV (lookupDataCon dc)
331 let [arr_dc] = tyConDataCons arr_tc
332 let shape_tys = take (dataConRepArity arr_dc - length bndrs)
333 (dataConRepArgTys arr_dc)
334 shape_bndrs <- mapM (newLocalVar FSLIT("s")) shape_tys
335 return . vLet (vNonRec vbndr vexpr)
336 $ vCaseProd vscrut vty lty vect_dc arr_dc shape_bndrs vbndrs vbody