import Var
import VarEnv
import VarSet
-import Name ( mkSysTvName, getName )
+import Name ( Name, mkSysTvName, getName )
import NameEnv
import Id
import MkId ( unwrapFamInstScrut )
import OccName
+import Module ( Module )
import DsMonad hiding (mapAndUnzipM)
import DsUtils ( mkCoreTup, mkCoreTupTy )
+import Literal ( Literal )
import PrelNames
import TysWiredIn
import TysPrim ( intPrimTy )
import Outputable
import FastString
-import Control.Monad ( liftM, liftM2, mapAndUnzipM )
+import Control.Monad ( liftM, liftM2, zipWithM, mapAndUnzipM )
vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
-> IO (SimplCount, ModGuts)
vectModule :: ModGuts -> VM ModGuts
vectModule guts
= do
- (types', fam_insts, pa_insts) <- vectTypeEnv (mg_types guts)
+ (types', fam_insts, tc_binds) <- vectTypeEnv (mg_types guts)
- let insts = map painstInstance pa_insts
- fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
- inst_env' = extendInstEnvList (mg_inst_env guts) insts
- updGEnv (setInstEnvs inst_env' fam_inst_env')
+ let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
+ updGEnv (setFamInstEnv fam_inst_env')
- dicts <- mapM buildPADict pa_insts
- binds' <- mapM vectTopBind (mg_binds guts)
+ -- dicts <- mapM buildPADict pa_insts
+ -- workers <- mapM vectDataConWorkers pa_insts
+ binds' <- mapM vectTopBind (mg_binds guts)
return $ guts { mg_types = types'
- , mg_binds = Rec (concat dicts) : binds'
- , mg_inst_env = inst_env'
+ , mg_binds = Rec tc_binds : binds'
, mg_fam_inst_env = fam_inst_env'
- , mg_insts = mg_insts guts ++ insts
, mg_fam_insts = mg_fam_insts guts ++ fam_insts
}
vectTopBind b@(NonRec var expr)
= do
var' <- vectTopBinder var
- expr' <- vectTopRhs expr
+ expr' <- vectTopRhs var expr
hs <- takeHoisted
return . Rec $ (var, expr) : (var', expr') : hs
`orElseV`
vectTopBind b@(Rec bs)
= do
vars' <- mapM vectTopBinder vars
- exprs' <- mapM vectTopRhs exprs
+ exprs' <- zipWithM vectTopRhs vars exprs
hs <- takeHoisted
return . Rec $ bs ++ zip vars' exprs' ++ hs
`orElseV`
vectTopBinder :: Var -> VM Var
vectTopBinder var
= do
- vty <- vectType (idType var)
- name <- cloneName mkVectOcc (getName var)
- let var' | isExportedId var = Id.mkExportedLocalId name vty
- | otherwise = Id.mkLocalId name vty
+ vty <- vectType (idType var)
+ var' <- cloneId mkVectOcc var vty
defGlobalVar var var'
return var'
-vectTopRhs :: CoreExpr -> VM CoreExpr
-vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
+vectTopRhs :: Var -> CoreExpr -> VM CoreExpr
+vectTopRhs var expr
+ = do
+ closedV . liftM vectorised
+ . inBind var
+ $ vectPolyExpr (freeVars expr)
-- ----------------------------------------------------------------------------
-- Bindings
x <- p
return (vv, x)
+vectBndrIn' :: Var -> (VVar -> VM a) -> VM (VVar, a)
+vectBndrIn' v p
+ = localV
+ $ do
+ vv <- vectBndr v
+ x <- p vv
+ return (vv, x)
+
vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a)
vectBndrsIn vs p
= localV
-- ----------------------------------------------------------------------------
-- Expressions
-capply :: VExpr -> VExpr -> VM VExpr
-capply (vfn, lfn) (varg, larg)
- = do
- apply <- builtin applyClosureVar
- applyP <- builtin applyClosurePVar
- return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
- mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
- where
- fn_ty = exprType vfn
- (arg_ty, res_ty) = splitClosureTy fn_ty
-
-vectVar :: Var -> Var -> VM VExpr
-vectVar lc v
+vectVar :: Var -> VM VExpr
+vectVar v
= do
r <- lookupVar v
case r of
Local (vv,lv) -> return (Var vv, Var lv)
Global vv -> do
let vexpr = Var vv
- lexpr <- replicatePA vexpr (Var lc)
+ lexpr <- liftPA vexpr
return (vexpr, lexpr)
-vectPolyVar :: Var -> Var -> [Type] -> VM VExpr
-vectPolyVar lc v tys
+vectPolyVar :: Var -> [Type] -> VM VExpr
+vectPolyVar v tys
= do
vtys <- mapM vectType tys
r <- lookupVar v
(polyApply (Var lv) vtys)
Global poly -> do
vexpr <- polyApply (Var poly) vtys
- lexpr <- replicatePA vexpr (Var lc)
+ lexpr <- liftPA vexpr
return (vexpr, lexpr)
-vectPolyExpr :: Var -> CoreExprWithFVs -> VM VExpr
-vectPolyExpr lc expr
+vectLiteral :: Literal -> VM VExpr
+vectLiteral lit
+ = do
+ lexpr <- liftPA (Lit lit)
+ return (Lit lit, lexpr)
+
+vectPolyExpr :: CoreExprWithFVs -> VM VExpr
+vectPolyExpr expr
= polyAbstract tvs $ \abstract ->
- -- FIXME: shadowing (tvs in lc)
do
- mono' <- vectExpr lc mono
+ mono' <- vectExpr mono
return $ mapVect abstract mono'
where
(tvs, mono) = collectAnnTypeBinders expr
-vectExpr :: Var -> CoreExprWithFVs -> VM VExpr
-vectExpr lc (_, AnnType ty)
- = do
- vty <- vectType ty
- return (Type vty, Type vty)
+vectExpr :: CoreExprWithFVs -> VM VExpr
+vectExpr (_, AnnType ty)
+ = liftM vType (vectType ty)
-vectExpr lc (_, AnnVar v) = vectVar lc v
+vectExpr (_, AnnVar v) = vectVar v
-vectExpr lc (_, AnnLit lit)
- = do
- let vexpr = Lit lit
- lexpr <- replicatePA vexpr (Var lc)
- return (vexpr, lexpr)
+vectExpr (_, AnnLit lit) = vectLiteral lit
-vectExpr lc (_, AnnNote note expr)
- = do
- (vexpr, lexpr) <- vectExpr lc expr
- return (Note note vexpr, Note note lexpr)
+vectExpr (_, AnnNote note expr)
+ = liftM (vNote note) (vectExpr expr)
-vectExpr lc e@(_, AnnApp _ arg)
+vectExpr e@(_, AnnApp _ arg)
| isAnnTypeArg arg
- = vectTyAppExpr lc fn tys
+ = vectTyAppExpr fn tys
where
(fn, tys) = collectAnnTypeArgs e
-vectExpr lc (_, AnnApp fn arg)
+vectExpr (_, AnnApp fn arg)
= do
- fn' <- vectExpr lc fn
- arg' <- vectExpr lc arg
- capply fn' arg'
+ fn' <- vectExpr fn
+ arg' <- vectExpr arg
+ mkClosureApp fn' arg'
+
+vectExpr (_, AnnCase scrut bndr ty alts)
+ | isAlgType scrut_ty
+ = vectAlgCase scrut bndr ty alts
+ where
+ scrut_ty = exprType (deAnnotate scrut)
-vectExpr lc (_, AnnCase expr bndr ty alts)
+vectExpr (_, AnnCase expr bndr ty alts)
= panic "vectExpr: case"
-vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
+vectExpr (_, AnnLet (AnnNonRec bndr rhs) body)
= do
- (vrhs, lrhs) <- vectPolyExpr lc rhs
- ((vbndr, lbndr), (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
- return (Let (NonRec vbndr vrhs) vbody,
- Let (NonRec lbndr lrhs) lbody)
+ vrhs <- localV . inBind bndr $ vectPolyExpr rhs
+ (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+ return $ vLet (vNonRec vbndr vrhs) vbody
-vectExpr lc (_, AnnLet (AnnRec prs) body)
+vectExpr (_, AnnLet (AnnRec bs) body)
= do
- (bndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
- let (vbndrs, lbndrs) = unzip bndrs
- return (Let (Rec (zip vbndrs vrhss)) vbody,
- Let (Rec (zip lbndrs lrhss)) lbody)
+ (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs
+ $ liftM2 (,)
+ (zipWithM vect_rhs bndrs rhss)
+ (vectPolyExpr body)
+ return $ vLet (vRec vbndrs vrhss) vbody
where
- (bndrs, rhss) = unzip prs
-
- vect = do
- (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
- (vbody, lbody) <- vectPolyExpr lc body
- return (vrhss, vbody, lrhss, lbody)
+ (bndrs, rhss) = unzip bs
+
+ vect_rhs bndr rhs = localV
+ . inBind bndr
+ $ vectExpr rhs
-vectExpr lc e@(_, AnnLam bndr body)
- | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
+vectExpr e@(fvs, AnnLam bndr _)
+ | not (isId bndr) = pprPanic "vectExpr" (ppr $ deAnnotate e)
+ | otherwise = vectLam fvs bs body
+ where
+ (bs,body) = collectAnnValBinders e
-vectExpr lc (fvs, AnnLam bndr body)
+vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
+vectLam fvs bs body
= do
tyvars <- localTyVars
- info <- mkCEnvInfo fvs bndr body
- (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
-
- vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
- lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
-
- let (venv, lenv) = mkClosureEnvs info (Var lc)
-
- let env_ty = cenv_vty info
-
- pa_dict <- paDictOfType env_ty
-
- arg_ty <- vectType (varType bndr)
- res_ty <- vectType (exprType $ deAnnotate body)
-
- -- FIXME: move the functions to the top level
- mono_vfn <- polyApply (Var vfn_var) (mkTyVarTys tyvars)
- mono_lfn <- polyApply (Var lfn_var) (mkTyVarTys tyvars)
-
- mk_clo <- builtin mkClosureVar
- mk_cloP <- builtin mkClosurePVar
-
- let vclo = Var mk_clo `mkTyApps` [arg_ty, res_ty, env_ty]
- `mkApps` [pa_dict, mono_vfn, mono_lfn, venv]
-
- lclo = Var mk_cloP `mkTyApps` [arg_ty, res_ty, env_ty]
- `mkApps` [pa_dict, mono_vfn, mono_lfn, lenv]
-
- return (vclo, lclo)
-
-data CEnvInfo = CEnvInfo {
- cenv_vars :: [Var]
- , cenv_values :: [(CoreExpr, CoreExpr)]
- , cenv_vty :: Type
- , cenv_lty :: Type
- , cenv_repr_tycon :: TyCon
- , cenv_repr_tyargs :: [Type]
- , cenv_repr_datacon :: DataCon
- }
-
-mkCEnvInfo :: VarSet -> Var -> CoreExprWithFVs -> VM CEnvInfo
-mkCEnvInfo fvs arg body
+ (vs, vvs) <- readLEnv $ \env ->
+ unzip [(var, vv) | var <- varSetElems fvs
+ , Just vv <- [lookupVarEnv (local_vars env) var]]
+
+ arg_tys <- mapM (vectType . idType) bs
+ res_ty <- vectType (exprType $ deAnnotate body)
+
+ buildClosures tyvars vvs arg_tys res_ty
+ . hoistPolyVExpr tyvars
+ $ do
+ lc <- builtin liftingContext
+ (vbndrs, vbody) <- vectBndrsIn (vs ++ bs)
+ (vectExpr body)
+ return $ vLams lc vbndrs vbody
+
+vectTyAppExpr :: CoreExprWithFVs -> [Type] -> VM VExpr
+vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys
+vectTyAppExpr e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
+
+type CoreAltWithFVs = AnnAlt Id VarSet
+
+-- We convert
+--
+-- case e :: t of v { ... }
+--
+-- to
+--
+-- V: let v = e in case v of _ { ... }
+-- L: let v = e in case v `cast` ... of _ { ... }
+--
+-- When lifting, we have to do it this way because v must have the type
+-- [:V(T):] but the scrutinee must be cast to the representation type.
+--
+
+-- FIXME: this is too lazy
+vectAlgCase scrut bndr ty [(DEFAULT, [], body)]
= do
- locals <- readLEnv local_vars
- let
- (vars, vals) = unzip
- [(var, (Var v, Var v')) | var <- varSetElems fvs
- , Just (v,v') <- [lookupVarEnv locals var]]
- vtys <- mapM (vectType . varType) vars
-
- (vty, repr_tycon, repr_tyargs, repr_datacon) <- mk_env_ty vtys
- lty <- mkPArrayType vty
-
- return $ CEnvInfo {
- cenv_vars = vars
- , cenv_values = vals
- , cenv_vty = vty
- , cenv_lty = lty
- , cenv_repr_tycon = repr_tycon
- , cenv_repr_tyargs = repr_tyargs
- , cenv_repr_datacon = repr_datacon
- }
- where
- mk_env_ty [vty]
- = return (vty, error "absent cinfo_repr_tycon"
- , error "absent cinfo_repr_tyargs"
- , error "absent cinfo_repr_datacon")
-
- mk_env_ty vtys
- = do
- let ty = mkCoreTupTy vtys
- (repr_tc, repr_tyargs) <- lookupPArrayFamInst ty
- let [repr_con] = tyConDataCons repr_tc
- return (ty, repr_tc, repr_tyargs, repr_con)
-
-
-
-mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr)
-mkClosureEnvs info lc
- | [] <- vals
- = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info))
- [lc, Var unitDataConId])
-
- | [(vval, lval)] <- vals
- = (vval, lval)
-
- | otherwise
- = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
- `mkTyApps` cenv_repr_tyargs info
- `mkApps` (lc : lvals))
+ vscrut <- vectExpr scrut
+ vty <- vectType ty
+ lty <- mkPArrayType vty
+ (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+ return $ vCaseDEFAULT vscrut vbndr vty lty vbody
- where
- vals = cenv_values info
- (vvals, lvals) = unzip vals
-
-mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs
- -> VM (CoreExpr, CoreExpr)
-mkClosureFns info tyvars arg body
- = closedV
- . polyAbstract tyvars
- $ \mk_tlams ->
- do
- (vfn, lfn) <- mkClosureMonoFns info arg body
- return (mk_tlams vfn, mk_tlams lfn)
-
-mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
-mkClosureMonoFns info arg body
+vectAlgCase scrut bndr ty [(DataAlt dc, bndrs, body)]
= do
- lc_bndr <- newLocalVar FSLIT("lc") intPrimTy
- (bndrs, (vbody, lbody))
- <- vectBndrsIn (arg : cenv_vars info)
- (vectExpr lc_bndr body)
- let (varg : vbndrs, larg : lbndrs) = unzip bndrs
-
- venv_bndr <- newLocalVar FSLIT("env") vty
- lenv_bndr <- newLocalVar FSLIT("env") lty
-
- let vcase = bind_venv (Var venv_bndr) vbody vbndrs
- lcase <- bind_lenv (Var lenv_bndr) lbody lc_bndr lbndrs
- return (mkLams [venv_bndr, varg] vcase, mkLams [lenv_bndr, larg] lcase)
- where
- vty = cenv_vty info
- lty = cenv_lty info
-
- arity = length (cenv_vars info)
-
- bind_venv venv vbody [] = vbody
- bind_venv venv vbody [vbndr] = Let (NonRec vbndr venv) vbody
- bind_venv venv vbody vbndrs
- = Case venv (mkWildId vty) (exprType vbody)
- [(DataAlt (tupleCon Boxed arity), vbndrs, vbody)]
-
- bind_lenv lenv lbody lc_bndr [lbndr]
- = do
- len <- lengthPA (Var lbndr)
- return . Let (NonRec lbndr lenv)
- $ Case len
- lc_bndr
- (exprType lbody)
- [(DEFAULT, [], lbody)]
-
- bind_lenv lenv lbody lc_bndr lbndrs
- = let scrut = unwrapFamInstScrut (cenv_repr_tycon info)
- (cenv_repr_tyargs info)
- lenv
- lbndrs' | null lbndrs = [mkWildId unitTy]
- | otherwise = lbndrs
- in
- return
- $ Case scrut
- (mkWildId (exprType scrut))
- (exprType lbody)
- [(DataAlt (cenv_repr_datacon info), lc_bndr : lbndrs', lbody)]
-
-vectTyAppExpr :: Var -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
-vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
-vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
-
+ vty <- vectType ty
+ lty <- mkPArrayType vty
+ vexpr <- vectExpr scrut
+ (vbndr, (vbndrs, vbody)) <- vectBndrIn bndr
+ . vectBndrsIn bndrs
+ $ vectExpr body
+
+ (vscrut, arr_tc, arg_tys) <- mkVScrut (vVar vbndr)
+ vect_dc <- maybeV (lookupDataCon dc)
+ let [arr_dc] = tyConDataCons arr_tc
+ let shape_tys = take (dataConRepArity arr_dc - length bndrs)
+ (dataConRepArgTys arr_dc)
+ shape_bndrs <- mapM (newLocalVar FSLIT("s")) shape_tys
+ return . vLet (vNonRec vbndr vexpr)
+ $ vCaseProd vscrut vty lty vect_dc arr_dc shape_bndrs vbndrs vbody