#include "HsVersions.h"
+import VectMonad
+import VectUtils
+import VectType
+
import DynFlags
import HscTypes
import CoreSyn
import CoreUtils
import CoreFVs
+import SimplMonad ( SimplCount, zeroSimplCount )
+import Rules ( RuleBase )
+import DataCon
import TyCon
import Type
-import TypeRep
+import FamInstEnv ( extendFamInstEnvList )
+import InstEnv ( extendInstEnvList )
import Var
import VarEnv
-import Name ( mkSysTvName )
+import VarSet
+import Name ( mkSysTvName, getName )
import NameEnv
import Id
+import MkId ( unwrapFamInstScrut )
+import OccName
import DsMonad hiding (mapAndUnzipM)
+import DsUtils ( mkCoreTup, mkCoreTupTy )
import PrelNames
+import TysWiredIn
+import TysPrim ( intPrimTy )
+import BasicTypes ( Boxity(..) )
import Outputable
import FastString
import Control.Monad ( liftM, liftM2, mapAndUnzipM )
-vectorise :: HscEnv -> ModGuts -> IO ModGuts
-vectorise hsc_env guts
- | not (Opt_Vectorise `dopt` dflags) = return guts
- | otherwise
+vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
+ -> IO (SimplCount, ModGuts)
+vectorise hsc_env _ _ guts
= do
showPass dflags "Vectorisation"
eps <- hscEPS hsc_env
let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
- Just guts' <- initDs hsc_env (mg_module guts)
- (mg_rdr_env guts)
- (mg_types guts)
- (vectoriseModule info guts)
+ Just (info', guts') <- initV hsc_env guts info (vectModule guts)
endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
- return guts'
+ return (zeroSimplCount dflags, guts' { mg_vect_info = info' })
where
dflags = hsc_dflags hsc_env
--- ----------------------------------------------------------------------------
--- Vectorisation monad
-
-data Builtins = Builtins {
- parrayTyCon :: TyCon
- , paTyCon :: TyCon
- , closureTyCon :: TyCon
- , mkClosureVar :: Var
- , applyClosureVar :: Var
- , mkClosurePVar :: Var
- , applyClosurePVar :: Var
- , closurePAVar :: Var
- , lengthPAVar :: Var
- , replicatePAVar :: Var
- }
-
-initBuiltins :: DsM Builtins
-initBuiltins
+vectModule :: ModGuts -> VM ModGuts
+vectModule guts
= do
- parrayTyCon <- dsLookupTyCon parrayTyConName
- paTyCon <- dsLookupTyCon paTyConName
- closureTyCon <- dsLookupTyCon closureTyConName
-
- mkClosureVar <- dsLookupGlobalId mkClosureName
- applyClosureVar <- dsLookupGlobalId applyClosureName
- mkClosurePVar <- dsLookupGlobalId mkClosurePName
- applyClosurePVar <- dsLookupGlobalId applyClosurePName
- closurePAVar <- dsLookupGlobalId closurePAName
- lengthPAVar <- dsLookupGlobalId lengthPAName
- replicatePAVar <- dsLookupGlobalId replicatePAName
-
- return $ Builtins {
- parrayTyCon = parrayTyCon
- , paTyCon = paTyCon
- , closureTyCon = closureTyCon
- , mkClosureVar = mkClosureVar
- , applyClosureVar = applyClosureVar
- , mkClosurePVar = mkClosurePVar
- , applyClosurePVar = applyClosurePVar
- , closurePAVar = closurePAVar
- , lengthPAVar = lengthPAVar
- , replicatePAVar = replicatePAVar
- }
-
-data GlobalEnv = GlobalEnv {
- -- Mapping from global variables to their vectorised versions.
- --
- global_vars :: VarEnv CoreExpr
-
- -- Exported variables which have a vectorised version
- --
- , global_exported_vars :: VarEnv (Var, Var)
-
- -- Mapping from TyCons to their vectorised versions.
- -- TyCons which do not have to be vectorised are mapped to
- -- themselves.
- --
- , global_tycons :: NameEnv TyCon
-
- -- Mapping from TyCons to their PA dictionaries
- --
- , global_tycon_pa :: NameEnv CoreExpr
- }
-
-data LocalEnv = LocalEnv {
- -- Mapping from local variables to their vectorised and
- -- lifted versions
- --
- local_vars :: VarEnv (CoreExpr, CoreExpr)
-
- -- Mapping from tyvars to their PA dictionaries
- , local_tyvar_pa :: VarEnv CoreExpr
- }
-
-
-initGlobalEnv :: VectInfo -> GlobalEnv
-initGlobalEnv info
- = GlobalEnv {
- global_vars = mapVarEnv (Var . snd) $ vectInfoCCVar info
- , global_exported_vars = emptyVarEnv
- , global_tycons = mapNameEnv snd $ vectInfoCCTyCon info
- , global_tycon_pa = emptyNameEnv
- }
-
-emptyLocalEnv = LocalEnv {
- local_vars = emptyVarEnv
- , local_tyvar_pa = emptyVarEnv
- }
-
--- FIXME
-updVectInfo :: GlobalEnv -> ModGuts -> ModGuts
-updVectInfo env guts = guts { mg_vect_info = info' }
+ (types', fam_insts, pa_insts) <- 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')
+
+ dicts <- mapM buildPADict 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_fam_inst_env = fam_inst_env'
+ , mg_insts = mg_insts guts ++ insts
+ , mg_fam_insts = mg_fam_insts guts ++ fam_insts
+ }
+
+vectTopBind :: CoreBind -> VM CoreBind
+vectTopBind b@(NonRec var expr)
+ = do
+ var' <- vectTopBinder var
+ expr' <- vectTopRhs expr
+ hs <- takeHoisted
+ return . Rec $ (var, expr) : (var', expr') : hs
+ `orElseV`
+ return b
+
+vectTopBind b@(Rec bs)
+ = do
+ vars' <- mapM vectTopBinder vars
+ exprs' <- mapM vectTopRhs exprs
+ hs <- takeHoisted
+ return . Rec $ bs ++ zip vars' exprs' ++ hs
+ `orElseV`
+ return b
where
- info' = info {
- vectInfoCCVar = global_exported_vars env
- , vectInfoCCTyCon = tc_env
- }
-
- info = mg_vect_info guts
- tyenv = mg_types guts
-
- tc_env = mkNameEnv [(tc_name, (tc,tc')) | tc <- typeEnvTyCons tyenv
- , let tc_name = tyConName tc
- , Just tc' <- [lookupNameEnv (global_tycons env) tc_name]]
-
-data VResult a = Yes GlobalEnv LocalEnv a | No
-
-newtype VM a = VM { runVM :: Builtins -> GlobalEnv -> LocalEnv -> DsM (VResult a) }
-
-instance Monad VM where
- return x = VM $ \bi genv lenv -> return (Yes genv lenv x)
- VM p >>= f = VM $ \bi genv lenv -> do
- r <- p bi genv lenv
- case r of
- Yes genv' lenv' x -> runVM (f x) bi genv' lenv'
- No -> return No
-
-noV :: VM a
-noV = VM $ \_ _ _ -> return No
-
-tryV :: VM a -> VM (Maybe a)
-tryV (VM p) = VM $ \bi genv lenv ->
- do
- r <- p bi genv lenv
- case r of
- Yes genv' lenv' x -> return (Yes genv' lenv' (Just x))
- No -> return (Yes genv lenv Nothing)
-
-maybeV :: VM (Maybe a) -> VM a
-maybeV p = maybe noV return =<< p
-
-orElseV :: VM a -> VM a -> VM a
-orElseV p q = maybe q return =<< tryV p
+ (vars, exprs) = unzip bs
-localV :: VM a -> VM a
-localV p = do
- env <- readLEnv id
- x <- p
- setLEnv env
- return x
-
-liftDs :: DsM a -> VM a
-liftDs p = VM $ \bi genv lenv -> do { x <- p; return (Yes genv lenv x) }
-
-builtin :: (Builtins -> a) -> VM a
-builtin f = VM $ \bi genv lenv -> return (Yes genv lenv (f bi))
-
-readGEnv :: (GlobalEnv -> a) -> VM a
-readGEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f genv))
-
-setGEnv :: GlobalEnv -> VM ()
-setGEnv genv = VM $ \_ _ lenv -> return (Yes genv lenv ())
-
-updGEnv :: (GlobalEnv -> GlobalEnv) -> VM ()
-updGEnv f = VM $ \_ genv lenv -> return (Yes (f genv) lenv ())
-
-readLEnv :: (LocalEnv -> a) -> VM a
-readLEnv f = VM $ \bi genv lenv -> return (Yes genv lenv (f lenv))
-
-setLEnv :: LocalEnv -> VM ()
-setLEnv lenv = VM $ \_ genv _ -> return (Yes genv lenv ())
-
-updLEnv :: (LocalEnv -> LocalEnv) -> VM ()
-updLEnv f = VM $ \_ genv lenv -> return (Yes genv (f lenv) ())
-
-newTyVar :: FastString -> Kind -> VM Var
-newTyVar fs k
+vectTopBinder :: Var -> VM Var
+vectTopBinder var
= do
- u <- liftDs newUnique
- return $ mkTyVar (mkSysTvName u fs) k
-
-lookupTyCon :: TyCon -> VM (Maybe TyCon)
-lookupTyCon tc = readGEnv $ \env -> lookupNameEnv (global_tycons env) (tyConName tc)
+ vty <- vectType (idType var)
+ name <- cloneName mkVectOcc (getName var)
+ let var' | isExportedId var = Id.mkExportedLocalId name vty
+ | otherwise = Id.mkLocalId name vty
+ defGlobalVar var var'
+ return var'
+
+vectTopRhs :: CoreExpr -> VM CoreExpr
+vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
-- ----------------------------------------------------------------------------
-- Bindings
-vectoriseModule :: VectInfo -> ModGuts -> DsM ModGuts
-vectoriseModule info guts
- = do
- builtins <- initBuiltins
- r <- runVM (vectModule guts) builtins (initGlobalEnv info) emptyLocalEnv
- case r of
- Yes genv _ guts' -> return $ updVectInfo genv guts'
- No -> return guts
-
-vectModule :: ModGuts -> VM ModGuts
-vectModule guts = return guts
-
-
-
vectBndr :: Var -> VM (Var, Var)
vectBndr v
= do
vty <- vectType (idType v)
- lty <- mkPArrayTy vty
+ lty <- mkPArrayType vty
let vv = v `Id.setIdType` vty
lv = v `Id.setIdType` lty
updLEnv (mapTo vv lv)
return (vv, lv)
where
- mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (Var vv, Var lv) }
+ mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (vv, lv) }
vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
vectBndrIn v p
-- ----------------------------------------------------------------------------
-- Expressions
-replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
-replicateP expr len
- = do
- pa <- paOfType ty
- rep <- builtin replicatePAVar
- return $ mkApps (Var rep) [Type ty, pa, expr, len]
- where
- ty = exprType expr
-
capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
capply (vfn, lfn) (varg, larg)
= do
(arg_ty, res_ty) = splitClosureTy fn_ty
vectVar :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
-vectVar lc v = local v `orElseV` global v
+vectVar lc 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 lc
+ return (vexpr, lexpr)
+
+vectPolyVar :: CoreExpr -> Var -> [Type] -> VM (CoreExpr, CoreExpr)
+vectPolyVar lc v tys
+ = do
+ vtys <- mapM vectType tys
+ r <- lookupVar v
+ case r of
+ Local (vv, lv) -> liftM2 (,) (polyApply (Var vv) vtys)
+ (polyApply (Var lv) vtys)
+ Global poly -> do
+ vexpr <- polyApply (Var poly) vtys
+ lexpr <- replicatePA vexpr lc
+ return (vexpr, lexpr)
+
+vectPolyExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
+vectPolyExpr lc expr
+ = polyAbstract tvs $ \mk_lams ->
+ -- FIXME: shadowing (tvs in lc)
+ do
+ (vmono, lmono) <- vectExpr lc mono
+ return $ (mk_lams vmono, mk_lams lmono)
where
- local v = maybeV (readLEnv $ \env -> lookupVarEnv (local_vars env) v)
- global v = do
- vexpr <- maybeV (readGEnv $ \env -> lookupVarEnv (global_vars env) v)
- lexpr <- replicateP vexpr lc
- return (vexpr, lexpr)
+ (tvs, mono) = collectAnnTypeBinders expr
vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
vectExpr lc (_, AnnType ty)
= do
vty <- vectType ty
return (Type vty, Type vty)
+
vectExpr lc (_, AnnVar v) = vectVar lc v
+
vectExpr lc (_, AnnLit lit)
= do
let vexpr = Lit lit
- lexpr <- replicateP vexpr lc
+ lexpr <- replicatePA vexpr lc
return (vexpr, lexpr)
+
vectExpr lc (_, AnnNote note expr)
= do
(vexpr, lexpr) <- vectExpr lc expr
return (Note note vexpr, Note note lexpr)
+
+vectExpr lc e@(_, AnnApp _ arg)
+ | isAnnTypeArg arg
+ = vectTyAppExpr lc fn tys
+ where
+ (fn, tys) = collectAnnTypeArgs e
+
vectExpr lc (_, AnnApp fn arg)
= do
fn' <- vectExpr lc fn
arg' <- vectExpr lc arg
capply fn' arg'
+
vectExpr lc (_, AnnCase expr bndr ty alts)
= panic "vectExpr: case"
+
vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
= do
- (vrhs, lrhs) <- vectExpr lc rhs
+ (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)
+
vectExpr lc (_, AnnLet (AnnRec prs) body)
= do
(vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
vect = do
(vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
- (vbody, lbody) <- vectExpr lc body
+ (vbody, lbody) <- vectPolyExpr lc body
return (vrhss, vbody, lrhss, lbody)
--- ----------------------------------------------------------------------------
--- PA dictionaries
-
-paArgType :: Type -> Kind -> VM (Maybe Type)
-paArgType ty k
- | Just k' <- kindView k = paArgType ty k'
+vectExpr lc e@(_, AnnLam bndr body)
+ | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
--- Here, we assume that for a kind (k1 -> k2) to be valid, k1 and k2 can only
--- be made up of * and (->), i.e., they can't be coercion kinds or #.
-paArgType ty (FunTy k1 k2)
+vectExpr lc (fvs, AnnLam bndr body)
= do
- tv <- newTyVar FSLIT("a") k1
- ty1 <- paArgType' (TyVarTy tv) k1
- ty2 <- paArgType' (AppTy ty (TyVarTy tv)) k2
- return . Just $ ForAllTy tv (FunTy ty1 ty2)
+ tyvars <- localTyVars
+ info <- mkCEnvInfo fvs bndr body
+ (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
-paArgType ty k
- | isLiftedTypeKind k
- = do
- tc <- builtin paTyCon
- return . Just $ TyConApp tc [ty]
+ vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
+ lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
- | otherwise
- = return Nothing
+ let (venv, lenv) = mkClosureEnvs info lc
-paArgType' :: Type -> Kind -> VM Type
-paArgType' ty k
- = do
- r <- paArgType ty k
- case r of
- Just ty' -> return ty'
- Nothing -> pprPanic "paArgType'" (ppr ty)
+ let env_ty = cenv_vty info
-paOfTyCon :: TyCon -> VM CoreExpr
--- FIXME: just for now
-paOfTyCon tc = maybeV (readGEnv $ \env -> lookupNameEnv (global_tycon_pa env) (tyConName tc))
+ pa_dict <- paDictOfType env_ty
-paOfType :: Type -> VM CoreExpr
-paOfType ty | Just ty' <- coreView ty = paOfType ty'
+ arg_ty <- vectType (varType bndr)
+ res_ty <- vectType (exprType $ deAnnotate body)
-paOfType (TyVarTy tv) = maybeV (readLEnv $ \env -> lookupVarEnv (local_tyvar_pa env) tv)
-paOfType (AppTy ty1 ty2)
- = do
- e1 <- paOfType ty1
- e2 <- paOfType ty2
- return $ mkApps e1 [Type ty2, e2]
-paOfType (TyConApp tc tys)
- = do
- e <- paOfTyCon tc
- es <- mapM paOfType tys
- return $ mkApps e [arg | (t,e) <- zip tys es, arg <- [Type t, e]]
-paOfType (FunTy ty1 ty2) = paOfType (TyConApp funTyCon [ty1,ty2])
-paOfType t@(ForAllTy tv ty) = pprPanic "paOfType:" (ppr t)
-paOfType ty = pprPanic "paOfType:" (ppr ty)
-
+ -- 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
--- ----------------------------------------------------------------------------
--- Types
-
-vectTyCon :: TyCon -> VM TyCon
-vectTyCon tc
- | isFunTyCon tc = builtin closureTyCon
- | isBoxedTupleTyCon tc = return tc
- | isUnLiftedTyCon tc = return tc
- | otherwise = do
- r <- lookupTyCon tc
- case r of
- Just tc' -> return tc'
-
- -- FIXME: just for now
- Nothing -> pprTrace "ccTyCon:" (ppr tc) $ return tc
-
-vectType :: Type -> VM Type
-vectType ty | Just ty' <- coreView ty = vectType ty
-vectType (TyVarTy tv) = return $ TyVarTy tv
-vectType (AppTy ty1 ty2) = liftM2 AppTy (vectType ty1) (vectType ty2)
-vectType (TyConApp tc tys) = liftM2 TyConApp (vectTyCon tc) (mapM vectType tys)
-vectType (FunTy ty1 ty2) = liftM2 TyConApp (builtin closureTyCon)
- (mapM vectType [ty1,ty2])
-vectType (ForAllTy tv ty)
+ 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
= do
- r <- paArgType (TyVarTy tv) (tyVarKind tv)
- ty' <- vectType ty
- return . ForAllTy tv $ case r of { Just paty -> FunTy paty ty'; Nothing -> ty' }
+ 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)
-vectType ty = pprPanic "vectType:" (ppr ty)
+
+
+mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr)
+mkClosureEnvs info lc
+ | [] <- vals
+ = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info))
+ [lc, Var unitDataConId])
-isClosureTyCon :: TyCon -> Bool
-isClosureTyCon tc = tyConUnique tc == closureTyConKey
+ | [(vval, lval)] <- vals
+ = (vval, lval)
-splitClosureTy :: Type -> (Type, Type)
-splitClosureTy ty
- | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty
- , isClosureTyCon tc
- = (arg_ty, res_ty)
+ | otherwise
+ = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
+ `mkTyApps` cenv_repr_tyargs info
+ `mkApps` (lc : lvals))
- | otherwise = pprPanic "splitClosureTy" (ppr ty)
+ 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)
-mkPArrayTy :: Type -> VM Type
-mkPArrayTy ty = do
- tc <- builtin parrayTyCon
- return $ TyConApp tc [ty]
+mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
+mkClosureMonoFns info arg body
+ = do
+ lc_bndr <- newLocalVar FSLIT("lc") intPrimTy
+ (varg : vbndrs, larg : lbndrs, (vbody, lbody))
+ <- vectBndrsIn (arg : cenv_vars info)
+ (vectExpr (Var lc_bndr) body)
+
+ 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 :: CoreExpr -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
+vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
+vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
projects / ghc-hetmet.git / blobdiff