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
114 lc <- newLocalVar FSLIT("lc") intPrimTy
115 closedV . liftM vectorised
116 $ vectPolyExpr lc (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 capply :: VExpr -> VExpr -> VM VExpr
153 capply (vfn, lfn) (varg, larg)
155 apply <- builtin applyClosureVar
156 applyP <- builtin applyClosurePVar
157 return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
158 mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
161 (arg_ty, res_ty) = splitClosureTy fn_ty
163 vectVar :: Var -> Var -> VM VExpr
168 Local (vv,lv) -> return (Var vv, Var lv)
171 lexpr <- replicatePA vexpr (Var lc)
172 return (vexpr, lexpr)
174 vectPolyVar :: Var -> Var -> [Type] -> VM VExpr
177 vtys <- mapM vectType tys
180 Local (vv, lv) -> liftM2 (,) (polyApply (Var vv) vtys)
181 (polyApply (Var lv) vtys)
183 vexpr <- polyApply (Var poly) vtys
184 lexpr <- replicatePA vexpr (Var lc)
185 return (vexpr, lexpr)
187 vectLiteral :: Var -> Literal -> VM VExpr
190 lexpr <- replicatePA (Lit lit) (Var lc)
191 return (Lit lit, lexpr)
193 vectPolyExpr :: Var -> CoreExprWithFVs -> VM VExpr
195 = polyAbstract tvs $ \abstract ->
196 -- FIXME: shadowing (tvs in lc)
198 mono' <- vectExpr lc mono
199 return $ mapVect abstract mono'
201 (tvs, mono) = collectAnnTypeBinders expr
203 vectExpr :: Var -> CoreExprWithFVs -> VM VExpr
204 vectExpr lc (_, AnnType ty)
205 = liftM vType (vectType ty)
207 vectExpr lc (_, AnnVar v) = vectVar lc v
209 vectExpr lc (_, AnnLit lit) = vectLiteral lc lit
211 vectExpr lc (_, AnnNote note expr)
212 = liftM (vNote note) (vectExpr lc expr)
214 vectExpr lc e@(_, AnnApp _ arg)
216 = vectTyAppExpr lc fn tys
218 (fn, tys) = collectAnnTypeArgs e
220 vectExpr lc (_, AnnApp fn arg)
222 fn' <- vectExpr lc fn
223 arg' <- vectExpr lc arg
226 vectExpr lc (_, AnnCase expr bndr ty alts)
227 = panic "vectExpr: case"
229 vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
231 vrhs <- vectPolyExpr lc rhs
232 (vbndr, vbody) <- vectBndrIn bndr (vectExpr lc body)
233 return $ vLet (vNonRec vbndr vrhs) vbody
235 vectExpr lc (_, AnnLet (AnnRec bs) body)
237 (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs
239 (mapM (vectExpr lc) rhss)
240 (vectPolyExpr lc body)
241 return $ vLet (vRec vbndrs vrhss) vbody
243 (bndrs, rhss) = unzip bs
245 vectExpr lc e@(fvs, AnnLam bndr _)
246 | not (isId bndr) = pprPanic "vectExpr" (ppr $ deAnnotate e)
247 | otherwise = vectLam lc fvs bs body
249 (bs,body) = collectAnnValBinders e
251 vectLam :: Var -> VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
252 vectLam lc fvs bs body
254 tyvars <- localTyVars
255 (vs, vvs) <- readLEnv $ \env ->
256 unzip [(var, vv) | var <- varSetElems fvs
257 , Just vv <- [lookupVarEnv (local_vars env) var]]
259 arg_tys <- mapM (vectType . idType) bs
260 res_ty <- vectType (exprType $ deAnnotate body)
262 buildClosures tyvars lc vvs arg_tys res_ty
263 . hoistPolyVExpr FSLIT("fn") tyvars
265 new_lc <- newLocalVar FSLIT("lc") intPrimTy
266 (vbndrs, vbody) <- vectBndrsIn (vs ++ bs)
267 (vectExpr new_lc body)
268 return $ vLams new_lc vbndrs vbody
270 vectTyAppExpr :: Var -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
271 vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
272 vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)