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, zipWithM, 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 var expr
86 return . Rec $ (var, expr) : (var', expr') : hs
90 vectTopBind b@(Rec bs)
92 vars' <- mapM vectTopBinder vars
93 exprs' <- zipWithM vectTopRhs vars 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 :: Var -> CoreExpr -> VM CoreExpr
114 closedV . liftM vectorised
116 $ vectPolyExpr (freeVars expr)
118 -- ----------------------------------------------------------------------------
121 vectBndr :: Var -> VM VVar
124 vty <- vectType (idType v)
125 lty <- mkPArrayType vty
126 let vv = v `Id.setIdType` vty
127 lv = v `Id.setIdType` lty
128 updLEnv (mapTo vv lv)
131 mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (vv, lv) }
133 vectBndrIn :: Var -> VM a -> VM (VVar, a)
141 vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a)
145 vvs <- mapM vectBndr vs
149 -- ----------------------------------------------------------------------------
152 vectVar :: Var -> VM VExpr
157 Local (vv,lv) -> return (Var vv, Var lv)
160 lexpr <- liftPA vexpr
161 return (vexpr, lexpr)
163 vectPolyVar :: Var -> [Type] -> VM VExpr
166 vtys <- mapM vectType tys
169 Local (vv, lv) -> liftM2 (,) (polyApply (Var vv) vtys)
170 (polyApply (Var lv) vtys)
172 vexpr <- polyApply (Var poly) vtys
173 lexpr <- liftPA vexpr
174 return (vexpr, lexpr)
176 vectLiteral :: Literal -> VM VExpr
179 lexpr <- liftPA (Lit lit)
180 return (Lit lit, lexpr)
182 vectPolyExpr :: CoreExprWithFVs -> VM VExpr
184 = polyAbstract tvs $ \abstract ->
186 mono' <- vectExpr mono
187 return $ mapVect abstract mono'
189 (tvs, mono) = collectAnnTypeBinders expr
191 vectExpr :: CoreExprWithFVs -> VM VExpr
192 vectExpr (_, AnnType ty)
193 = liftM vType (vectType ty)
195 vectExpr (_, AnnVar v) = vectVar v
197 vectExpr (_, AnnLit lit) = vectLiteral lit
199 vectExpr (_, AnnNote note expr)
200 = liftM (vNote note) (vectExpr expr)
202 vectExpr e@(_, AnnApp _ arg)
204 = vectTyAppExpr fn tys
206 (fn, tys) = collectAnnTypeArgs e
208 vectExpr (_, AnnApp fn arg)
212 mkClosureApp fn' arg'
214 vectExpr (_, AnnCase expr bndr ty alts)
215 = panic "vectExpr: case"
217 vectExpr (_, AnnLet (AnnNonRec bndr rhs) body)
219 vrhs <- localV . inBind bndr $ vectPolyExpr rhs
220 (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
221 return $ vLet (vNonRec vbndr vrhs) vbody
223 vectExpr (_, AnnLet (AnnRec bs) body)
225 (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs
227 (zipWithM vect_rhs bndrs rhss)
229 return $ vLet (vRec vbndrs vrhss) vbody
231 (bndrs, rhss) = unzip bs
233 vect_rhs bndr rhs = localV
237 vectExpr e@(fvs, AnnLam bndr _)
238 | not (isId bndr) = pprPanic "vectExpr" (ppr $ deAnnotate e)
239 | otherwise = vectLam fvs bs body
241 (bs,body) = collectAnnValBinders e
243 vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
246 tyvars <- localTyVars
247 (vs, vvs) <- readLEnv $ \env ->
248 unzip [(var, vv) | var <- varSetElems fvs
249 , Just vv <- [lookupVarEnv (local_vars env) var]]
251 arg_tys <- mapM (vectType . idType) bs
252 res_ty <- vectType (exprType $ deAnnotate body)
254 buildClosures tyvars vvs arg_tys res_ty
255 . hoistPolyVExpr tyvars
257 lc <- builtin liftingContext
258 (vbndrs, vbody) <- vectBndrsIn (vs ++ bs)
260 return $ vLams lc vbndrs vbody
262 vectTyAppExpr :: CoreExprWithFVs -> [Type] -> VM VExpr
263 vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys
264 vectTyAppExpr e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)