#include "HsVersions.h"
+import VectMonad
+import VectUtils
+
import DynFlags
import HscTypes
import CoreLint ( showPass, endPass )
+import CoreSyn
+import CoreUtils
+import CoreFVs
+import DataCon
import TyCon
import Type
import TypeRep
import Var
import VarEnv
-import Name ( mkSysTvName )
+import VarSet
+import Name ( mkSysTvName, getName )
import NameEnv
+import Id
+import MkId ( unwrapFamInstScrut )
+import OccName
-import DsMonad
+import DsMonad hiding (mapAndUnzipM)
+import DsUtils ( mkCoreTup, mkCoreTupTy )
import PrelNames
+import TysWiredIn
+import BasicTypes ( Boxity(..) )
import Outputable
import FastString
-import Control.Monad ( liftM2 )
+import Control.Monad ( liftM, liftM2, mapAndUnzipM, zipWithM_ )
+import Data.Maybe ( maybeToList )
vectorise :: HscEnv -> ModGuts -> IO ModGuts
vectorise hsc_env guts
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 $ guts' { mg_vect_info = info' }
where
dflags = hsc_dflags hsc_env
+vectModule :: ModGuts -> VM ModGuts
+vectModule guts
+ = do
+ binds' <- mapM vectTopBind (mg_binds guts)
+ return $ guts { mg_binds = binds' }
+
+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
+ (vars, exprs) = unzip bs
+
+vectTopBinder :: Var -> VM Var
+vectTopBinder var
+ = do
+ vty <- liftM (mkForAllTys tyvars) $ vectType mono_ty
+ name <- cloneName mkVectOcc (getName var)
+ let var' | isExportedId var = Id.mkExportedLocalId name vty
+ | otherwise = Id.mkLocalId name vty
+ defGlobalVar var var'
+ return var'
+ where
+ (tyvars, mono_ty) = splitForAllTys (idType var)
+
+vectTopRhs :: CoreExpr -> VM CoreExpr
+vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
+
-- ----------------------------------------------------------------------------
--- 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
- = 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
- }
+-- Bindings
-data VEnv = VEnv {
- -- Mapping from variables to their vectorised versions
- --
- vect_vars :: VarEnv Var
-
- -- Exported variables which have a vectorised version
- --
- , vect_exported_vars :: VarEnv (Var, Var)
-
- -- Mapping from TyCons to their vectorised versions.
- -- TyCons which do not have to be vectorised are mapped to
- -- themselves.
- , vect_tycons :: NameEnv TyCon
- }
-
-initVEnv :: VectInfo -> DsM VEnv
-initVEnv info
- = return $ VEnv {
- vect_vars = mapVarEnv snd $ vectInfoCCVar info
- , vect_exported_vars = emptyVarEnv
- , vect_tycons = mapNameEnv snd $ vectInfoCCTyCon info
- }
+vectBndr :: Var -> VM (Var, Var)
+vectBndr v
+ = do
+ vty <- vectType (idType v)
+ 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) }
+
+vectBndrIn :: Var -> VM a -> VM (Var, Var, a)
+vectBndrIn v p
+ = localV
+ $ do
+ (vv, lv) <- vectBndr v
+ x <- p
+ return (vv, lv, x)
+
+vectBndrsIn :: [Var] -> VM a -> VM ([Var], [Var], a)
+vectBndrsIn vs p
+ = localV
+ $ do
+ (vvs, lvs) <- mapAndUnzipM vectBndr vs
+ x <- p
+ return (vvs, lvs, x)
--- FIXME
-updVectInfo :: VEnv -> ModGuts -> ModGuts
-updVectInfo env guts = guts { mg_vect_info = info' }
+-- ----------------------------------------------------------------------------
+-- Expressions
+
+replicateP :: CoreExpr -> CoreExpr -> VM CoreExpr
+replicateP expr len
+ = do
+ dict <- paDictOfType ty
+ rep <- builtin replicatePAVar
+ return $ mkApps (Var rep) [Type ty, dict, expr, len]
where
- info' = info {
- vectInfoCCVar = vect_exported_vars env
- , vectInfoCCTyCon = tc_env
- }
+ ty = exprType expr
- info = mg_vect_info guts
- tyenv = mg_types guts
+capply :: (CoreExpr, CoreExpr) -> (CoreExpr, CoreExpr) -> VM (CoreExpr, CoreExpr)
+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
- tc_env = mkNameEnv [(tc_name, (tc,tc')) | tc <- typeEnvTyCons tyenv
- , let tc_name = tyConName tc
- , Just tc' <- [lookupNameEnv (vect_tycons env) tc_name]]
+vectVar :: CoreExpr -> Var -> VM (CoreExpr, CoreExpr)
+vectVar lc v
+ = do
+ r <- lookupVar v
+ case r of
+ Local es -> return es
+ Global vexpr -> do
+ lexpr <- replicateP vexpr lc
+ return (vexpr, lexpr)
-data VResult a = Yes VEnv a | No
+vectPolyVar :: CoreExpr -> Var -> [Type] -> VM (CoreExpr, CoreExpr)
+vectPolyVar lc v tys
+ = do
+ r <- lookupVar v
+ case r of
+ Local (vexpr, lexpr) -> liftM2 (,) (mk_app vexpr) (mk_app lexpr)
+ Global poly -> do
+ vexpr <- mk_app poly
+ lexpr <- replicateP vexpr lc
+ return (vexpr, lexpr)
+ where
+ mk_app e = applyToTypes e =<< mapM vectType tys
-newtype VM a = VM { runVM :: Builtins -> VEnv -> DsM (VResult a) }
+abstractOverTyVars :: [TyVar] -> ((CoreExpr -> CoreExpr) -> VM a) -> VM a
+abstractOverTyVars tvs p
+ = do
+ mdicts <- mapM mk_dict_var tvs
+ zipWithM_ (\tv -> maybe (deleteTyVarPA tv) (extendTyVarPA tv . Var)) tvs mdicts
+ p (mk_lams mdicts)
+ where
+ mk_dict_var tv = do
+ r <- paDictArgType tv
+ case r of
+ Just ty -> liftM Just (newLocalVar FSLIT("dPA") ty)
+ Nothing -> return Nothing
-instance Monad VM where
- return x = VM $ \bi env -> return (Yes env x)
- VM p >>= f = VM $ \bi env -> do
- r <- p bi env
- case r of
- Yes env' x -> runVM (f x) bi env'
- No -> return No
+ mk_lams mdicts = mkLams [arg | (tv, mdict) <- zip tvs mdicts
+ , arg <- tv : maybeToList mdict]
-noV :: VM a
-noV = VM $ \bi env -> return No
+applyToTypes :: CoreExpr -> [Type] -> VM CoreExpr
+applyToTypes expr tys
+ = do
+ dicts <- mapM paDictOfType tys
+ return $ mkApps expr [arg | (ty, dict) <- zip tys dicts
+ , arg <- [Type ty, dict]]
+
+
+vectPolyExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
+vectPolyExpr lc expr
+ = localV
+ . abstractOverTyVars tvs $ \mk_lams ->
+ -- FIXME: shadowing (tvs in lc)
+ do
+ (vmono, lmono) <- vectExpr lc mono
+ return $ (mk_lams vmono, mk_lams lmono)
+ where
+ (tvs, mono) = collectAnnTypeBinders expr
+
+vectExpr :: CoreExpr -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
+vectExpr lc (_, AnnType ty)
+ = do
+ vty <- vectType ty
+ return (Type vty, Type vty)
-tryV :: VM a -> VM (Maybe a)
-tryV (VM p) = VM $ \bi env -> do
- r <- p bi env
- case r of
- Yes env' x -> return (Yes env' (Just x))
- No -> return (Yes env Nothing)
+vectExpr lc (_, AnnVar v) = vectVar lc v
-liftDs :: DsM a -> VM a
-liftDs p = VM $ \bi env -> do { x <- p; return (Yes env x) }
+vectExpr lc (_, AnnLit lit)
+ = do
+ let vexpr = Lit lit
+ lexpr <- replicateP vexpr lc
+ return (vexpr, lexpr)
-builtin :: (Builtins -> a) -> VM a
-builtin f = VM $ \bi env -> return (Yes env (f bi))
+vectExpr lc (_, AnnNote note expr)
+ = do
+ (vexpr, lexpr) <- vectExpr lc expr
+ return (Note note vexpr, Note note lexpr)
-readEnv :: (VEnv -> a) -> VM a
-readEnv f = VM $ \bi env -> return (Yes env (f env))
+vectExpr lc e@(_, AnnApp _ arg)
+ | isAnnTypeArg arg
+ = vectTyAppExpr lc fn tys
+ where
+ (fn, tys) = collectAnnTypeArgs e
-setEnv :: VEnv -> VM ()
-setEnv env = VM $ \_ _ -> return (Yes env ())
+vectExpr lc (_, AnnApp fn arg)
+ = do
+ fn' <- vectExpr lc fn
+ arg' <- vectExpr lc arg
+ capply fn' arg'
-updEnv :: (VEnv -> VEnv) -> VM ()
-updEnv f = VM $ \_ env -> return (Yes (f env) ())
+vectExpr lc (_, AnnCase expr bndr ty alts)
+ = panic "vectExpr: case"
-newTyVar :: FastString -> Kind -> VM Var
-newTyVar fs k
+vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
= do
- u <- liftDs newUnique
- return $ mkTyVar (mkSysTvName u fs) k
+ (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)
-lookupTyCon :: TyCon -> VM (Maybe TyCon)
-lookupTyCon tc = readEnv $ \env -> lookupNameEnv (vect_tycons env) (tyConName tc)
+vectExpr lc (_, AnnLet (AnnRec prs) body)
+ = do
+ (vbndrs, lbndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
+ return (Let (Rec (zip vbndrs vrhss)) vbody,
+ Let (Rec (zip lbndrs lrhss)) lbody)
+ where
+ (bndrs, rhss) = unzip prs
+
+ vect = do
+ (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
+ (vbody, lbody) <- vectPolyExpr lc body
+ return (vrhss, vbody, lrhss, lbody)
--- ----------------------------------------------------------------------------
--- Bindings
+vectExpr lc e@(_, AnnLam bndr body)
+ | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
-vectoriseModule :: VectInfo -> ModGuts -> DsM ModGuts
-vectoriseModule info guts
+vectExpr lc (fvs, AnnLam bndr body)
= do
- builtins <- initBuiltins
- env <- initVEnv info
- r <- runVM (vectModule guts) builtins env
- case r of
- Yes env' guts' -> return $ updVectInfo env' guts'
- No -> return guts
+ let tyvars = filter isTyVar (varSetElems fvs)
+ info <- mkCEnvInfo fvs bndr body
+ (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
-vectModule :: ModGuts -> VM ModGuts
-vectModule guts = return guts
+ vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
+ lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
--- ----------------------------------------------------------------------------
--- Types
+ let (venv, lenv) = mkClosureEnvs info lc
-paArgType :: Type -> Kind -> VM (Maybe Type)
-paArgType ty k
- | Just k' <- kindView k = paArgType ty k'
+ let env_ty = cenv_vty info
--- 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)
- = 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)
+ 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 <- applyToTypes (Var vfn_var) (map TyVarTy tyvars)
+ mono_lfn <- applyToTypes (Var lfn_var) (map TyVarTy tyvars)
-paArgType ty k
- | isLiftedTypeKind k
+ 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
= do
- tc <- builtin paTyCon
- return . Just $ TyConApp tc [ty]
+ locals <- readLEnv local_vars
+ let
+ (vars, vals) = unzip
+ [(var, val) | var <- varSetElems fvs
+ , Just val <- [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
- = return Nothing
+ = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
+ `mkTyApps` cenv_repr_tyargs info
+ `mkApps` (lc : lvals))
-paArgType' :: Type -> Kind -> VM Type
-paArgType' ty k
+ where
+ vals = cenv_values info
+ (vvals, lvals) = unzip vals
+
+mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs
+ -> VM (CoreExpr, CoreExpr)
+mkClosureFns info tyvars arg body
+ = closedV
+ . abstractOverTyVars 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
= do
- r <- paArgType ty k
- case r of
- Just ty' -> return ty'
- Nothing -> pprPanic "paArgType'" (ppr ty)
+ lc_bndr <- newLocalVar FSLIT("lc") intTy
+ (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
+ lengthPA <- builtin lengthPAVar
+ return . Let (NonRec lbndr lenv)
+ $ Case (mkApps (Var lengthPA) [Type vty, (Var lbndr)])
+ lc_bndr
+ intTy
+ [(DEFAULT, [], lbody)]
+
+ bind_lenv lenv lbody lc_bndr lbndrs
+ = return
+ $ Case (unwrapFamInstScrut (cenv_repr_tycon info)
+ (cenv_repr_tyargs info)
+ lenv)
+ (mkWildId lty)
+ (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)
+
+-- ----------------------------------------------------------------------------
+-- Types
vectTyCon :: TyCon -> VM TyCon
vectTyCon tc
(mapM vectType [ty1,ty2])
vectType (ForAllTy tv ty)
= do
- r <- paArgType (TyVarTy tv) (tyVarKind tv)
+ r <- paDictArgType tv
ty' <- vectType ty
- return . ForAllTy tv $ case r of { Just paty -> FunTy paty ty'; Nothing -> ty' }
+ return $ ForAllTy tv (wrap r ty')
+ where
+ wrap Nothing = id
+ wrap (Just pa_ty) = FunTy pa_ty
vectType ty = pprPanic "vectType:" (ppr ty)
projects / ghc-hetmet.git / blobdiff