module VectUtils (
collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg,
+ collectAnnValBinders,
+ mkDataConTag,
splitClosureTy,
- mkPADictType, mkPArrayType,
- paDictArgType, paDictOfType,
- paMethod, lengthPA, replicatePA, emptyPA,
- lookupPArrayFamInst,
- hoistExpr, takeHoisted
+
+ TyConRepr(..), mkTyConRepr,
+ mkToPRepr, mkToArrPRepr, mkFromPRepr, mkFromArrPRepr,
+ mkPADictType, mkPArrayType, mkPReprType,
+
+ parrayCoerce, parrayReprTyCon, parrayReprDataCon, mkVScrut,
+ prDictOfType, prCoerce,
+ paDictArgType, paDictOfType, paDFunType,
+ paMethod, lengthPA, replicatePA, emptyPA, liftPA,
+ polyAbstract, polyApply, polyVApply,
+ hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted,
+ buildClosure, buildClosures,
+ mkClosureApp
) where
#include "HsVersions.h"
+import VectCore
import VectMonad
+import DsUtils
import CoreSyn
import CoreUtils
+import Coercion
import Type
import TypeRep
import TyCon
+import DataCon
import Var
+import Id ( mkWildId )
+import MkId ( unwrapFamInstScrut )
+import Name ( Name )
import PrelNames
+import TysWiredIn
+import BasicTypes ( Boxity(..) )
import Outputable
import FastString
-import Control.Monad ( liftM )
+import Data.List ( zipWith4 )
+import Control.Monad ( liftM, liftM2, zipWithM_ )
collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type])
collectAnnTypeArgs expr = go expr []
go bs (_, AnnLam b e) | isTyVar b = go (b:bs) e
go bs e = (reverse bs, e)
+collectAnnValBinders :: AnnExpr Var ann -> ([Var], AnnExpr Var ann)
+collectAnnValBinders expr = go [] expr
+ where
+ go bs (_, AnnLam b e) | isId b = go (b:bs) e
+ go bs e = (reverse bs, e)
+
isAnnTypeArg :: AnnExpr b ann -> Bool
isAnnTypeArg (_, AnnType t) = True
isAnnTypeArg _ = False
-isClosureTyCon :: TyCon -> Bool
-isClosureTyCon tc = tyConUnique tc == closureTyConKey
+mkDataConTag :: DataCon -> CoreExpr
+mkDataConTag dc = mkConApp intDataCon [mkIntLitInt $ dataConTag dc]
+
+splitUnTy :: String -> Name -> Type -> Type
+splitUnTy s name ty
+ | Just (tc, [ty']) <- splitTyConApp_maybe ty
+ , tyConName tc == name
+ = ty'
+
+ | otherwise = pprPanic s (ppr ty)
+
+splitBinTy :: String -> Name -> Type -> (Type, Type)
+splitBinTy s name ty
+ | Just (tc, [ty1, ty2]) <- splitTyConApp_maybe ty
+ , tyConName tc == name
+ = (ty1, ty2)
+
+ | otherwise = pprPanic s (ppr ty)
+
+splitFixedTyConApp :: TyCon -> Type -> [Type]
+splitFixedTyConApp tc ty
+ | Just (tc', tys) <- splitTyConApp_maybe ty
+ , tc == tc'
+ = tys
+
+ | otherwise = pprPanic "splitFixedTyConApp" (ppr tc <+> ppr ty)
splitClosureTy :: Type -> (Type, Type)
-splitClosureTy ty
- | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty
- , isClosureTyCon tc
- = (arg_ty, res_ty)
+splitClosureTy = splitBinTy "splitClosureTy" closureTyConName
- | otherwise = pprPanic "splitClosureTy" (ppr ty)
+splitPArrayTy :: Type -> Type
+splitPArrayTy = splitUnTy "splitPArrayTy" parrayTyConName
-mkPADictType :: Type -> VM Type
-mkPADictType ty
+mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type
+mkBuiltinTyConApp get_tc tys
+ = do
+ tc <- builtin get_tc
+ return $ mkTyConApp tc tys
+
+mkBuiltinTyConApps :: (Builtins -> TyCon) -> [Type] -> Type -> VM Type
+mkBuiltinTyConApps get_tc tys ty
+ = do
+ tc <- builtin get_tc
+ return $ foldr (mk tc) ty tys
+ where
+ mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
+
+mkBuiltinTyConApps1 :: (Builtins -> TyCon) -> Type -> [Type] -> VM Type
+mkBuiltinTyConApps1 get_tc dft [] = return dft
+mkBuiltinTyConApps1 get_tc dft tys
+ = do
+ tc <- builtin get_tc
+ case tys of
+ [] -> pprPanic "mkBuiltinTyConApps1" (ppr tc)
+ _ -> return $ foldr1 (mk tc) tys
+ where
+ mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
+
+data TyConRepr = TyConRepr {
+ repr_tyvars :: [TyVar]
+ , repr_tys :: [[Type]]
+
+ , repr_prod_tycons :: [Maybe TyCon]
+ , repr_prod_tys :: [Type]
+ , repr_sum_tycon :: Maybe TyCon
+ , repr_type :: Type
+ }
+
+mkTyConRepr :: TyCon -> VM TyConRepr
+mkTyConRepr vect_tc
+ = do
+ prod_tycons <- mapM (mk_tycon prodTyCon) rep_tys
+ let prod_tys = zipWith mk_tc_app_maybe prod_tycons rep_tys
+ sum_tycon <- mk_tycon sumTyCon prod_tys
+
+ return $ TyConRepr {
+ repr_tyvars = tyvars
+ , repr_tys = rep_tys
+
+ , repr_prod_tycons = prod_tycons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = sum_tycon
+ , repr_type = mk_tc_app_maybe sum_tycon prod_tys
+ }
+ where
+ tyvars = tyConTyVars vect_tc
+ data_cons = tyConDataCons vect_tc
+ rep_tys = map dataConRepArgTys data_cons
+
+ mk_tycon get_tc tys
+ | n > 1 = builtin (Just . get_tc n)
+ | otherwise = return Nothing
+ where n = length tys
+
+ mk_tc_app_maybe Nothing [] = unitTy
+ mk_tc_app_maybe Nothing [ty] = ty
+ mk_tc_app_maybe (Just tc) tys = mkTyConApp tc tys
+
+mkToPRepr :: TyConRepr -> [[CoreExpr]] -> [CoreExpr]
+mkToPRepr (TyConRepr {
+ repr_tys = repr_tys
+ , repr_prod_tycons = prod_tycons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = repr_sum_tycon
+ })
+ = mk_sum . zipWith3 mk_prod prod_tycons repr_tys
+ where
+ Just sum_tycon = repr_sum_tycon
+
+ mk_sum [] = [Var unitDataConId]
+ mk_sum [expr] = [expr]
+ mk_sum exprs = zipWith (mk_alt prod_tys) (tyConDataCons sum_tycon) exprs
+
+ mk_alt tys dc expr = mk_con_app dc tys [expr]
+
+ mk_prod _ _ [] = Var unitDataConId
+ mk_prod _ _ [expr] = expr
+ mk_prod (Just tc) tys exprs = mk_con_app dc tys exprs
+ where
+ [dc] = tyConDataCons tc
+
+ mk_con_app dc tys exprs = mkConApp dc (map Type tys ++ exprs)
+
+mkToArrPRepr :: CoreExpr -> CoreExpr -> [[CoreExpr]] -> VM CoreExpr
+mkToArrPRepr len sel ess
= do
- tc <- builtin paDictTyCon
- return $ TyConApp tc [ty]
+ let mk_sum [(expr, ty)] = return (expr, ty)
+ mk_sum es
+ = do
+ sum_tc <- builtin . sumTyCon $ length es
+ (sum_rtc, _) <- parrayReprTyCon (mkTyConApp sum_tc tys)
+ let [sum_rdc] = tyConDataCons sum_rtc
+
+ return (mkConApp sum_rdc (map Type tys ++ (len : sel : exprs)),
+ mkTyConApp sum_tc tys)
+ where
+ (exprs, tys) = unzip es
+
+ mk_prod [expr] = return (expr, splitPArrayTy (exprType expr))
+ mk_prod exprs
+ = do
+ prod_tc <- builtin . prodTyCon $ length exprs
+ (prod_rtc, _) <- parrayReprTyCon (mkTyConApp prod_tc tys)
+ let [prod_rdc] = tyConDataCons prod_rtc
+
+ return (mkConApp prod_rdc (map Type tys ++ (len : exprs)),
+ mkTyConApp prod_tc tys)
+ where
+ tys = map (splitPArrayTy . exprType) exprs
+
+ liftM fst (mk_sum =<< mapM mk_prod ess)
+
+mkFromPRepr :: CoreExpr -> Type -> [([Var], CoreExpr)] -> VM CoreExpr
+mkFromPRepr scrut res_ty alts
+ = do
+ sum_tcs <- builtins sumTyCon
+ prod_tcs <- builtins prodTyCon
+
+ let un_sum expr ty [(vars, res)] = un_prod expr ty vars res
+ un_sum expr ty bs
+ = do
+ ps <- mapM (newLocalVar FSLIT("p")) tys
+ bodies <- sequence
+ $ zipWith4 un_prod (map Var ps) tys vars rs
+ return . Case expr (mkWildId ty) res_ty
+ $ zipWith3 mk_alt sum_dcs ps bodies
+ where
+ (vars, rs) = unzip bs
+ tys = splitFixedTyConApp sum_tc ty
+ sum_tc = sum_tcs $ length bs
+ sum_dcs = tyConDataCons sum_tc
+
+ mk_alt dc p body = (DataAlt dc, [p], body)
+
+ un_prod expr ty [] r = return r
+ un_prod expr ty [var] r = return $ Let (NonRec var expr) r
+ un_prod expr ty vars r
+ = return $ Case expr (mkWildId ty) res_ty
+ [(DataAlt prod_dc, vars, r)]
+ where
+ prod_tc = prod_tcs $ length vars
+ [prod_dc] = tyConDataCons prod_tc
+
+ un_sum scrut (exprType scrut) alts
+
+mkFromArrPRepr :: CoreExpr -> Type -> Var -> Var -> [[Var]] -> CoreExpr
+ -> VM CoreExpr
+mkFromArrPRepr scrut res_ty len sel vars res
+ = return (Var unitDataConId)
+
+mkClosureType :: Type -> Type -> VM Type
+mkClosureType arg_ty res_ty = mkBuiltinTyConApp closureTyCon [arg_ty, res_ty]
+
+mkClosureTypes :: [Type] -> Type -> VM Type
+mkClosureTypes = mkBuiltinTyConApps closureTyCon
+
+mkPReprType :: Type -> VM Type
+mkPReprType ty = mkBuiltinTyConApp preprTyCon [ty]
+
+mkPADictType :: Type -> VM Type
+mkPADictType ty = mkBuiltinTyConApp paTyCon [ty]
mkPArrayType :: Type -> VM Type
-mkPArrayType ty
+mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty]
+
+parrayCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr
+parrayCoerce repr_tc args expr
+ | Just arg_co <- tyConFamilyCoercion_maybe repr_tc
+ = do
+ parray <- builtin parrayTyCon
+
+ let co = mkAppCoercion (mkTyConApp parray [])
+ (mkSymCoercion (mkTyConApp arg_co args))
+
+ return $ mkCoerce co expr
+
+parrayReprTyCon :: Type -> VM (TyCon, [Type])
+parrayReprTyCon ty = builtin parrayTyCon >>= (`lookupFamInst` [ty])
+
+parrayReprDataCon :: Type -> VM (DataCon, [Type])
+parrayReprDataCon ty
+ = do
+ (tc, arg_tys) <- parrayReprTyCon ty
+ let [dc] = tyConDataCons tc
+ return (dc, arg_tys)
+
+mkVScrut :: VExpr -> VM (VExpr, TyCon, [Type])
+mkVScrut (ve, le)
= do
- tc <- builtin parrayTyCon
- return $ TyConApp tc [ty]
+ (tc, arg_tys) <- parrayReprTyCon (exprType ve)
+ return ((ve, unwrapFamInstScrut tc arg_tys le), tc, arg_tys)
+
+prDictOfType :: Type -> VM CoreExpr
+prDictOfType orig_ty
+ | Just (tycon, ty_args) <- splitTyConApp_maybe orig_ty
+ = do
+ dfun <- traceMaybeV "prDictOfType" (ppr tycon) (lookupTyConPR tycon)
+ prDFunApply (Var dfun) ty_args
+
+prDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
+prDFunApply dfun tys
+ = do
+ args <- mapM mkDFunArg arg_tys
+ return $ mkApps mono_dfun args
+ where
+ mono_dfun = mkTyApps dfun tys
+ (arg_tys, _) = splitFunTys (exprType mono_dfun)
+
+mkDFunArg :: Type -> VM CoreExpr
+mkDFunArg ty
+ | Just (tycon, [arg]) <- splitTyConApp_maybe ty
+
+ = let name = tyConName tycon
+
+ get_dict | name == paTyConName = paDictOfType
+ | name == prTyConName = prDictOfType
+ | otherwise = pprPanic "mkDFunArg" (ppr ty)
+
+ in get_dict arg
+
+mkDFunArg ty = pprPanic "mkDFunArg" (ppr ty)
+
+prCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr
+prCoerce repr_tc args expr
+ | Just arg_co <- tyConFamilyCoercion_maybe repr_tc
+ = do
+ pr_tc <- builtin prTyCon
+
+ let co = mkAppCoercion (mkTyConApp pr_tc [])
+ (mkSymCoercion (mkTyConApp arg_co args))
+
+ return $ mkCoerce co expr
paDictArgType :: TyVar -> VM (Maybe Type)
paDictArgType tv = go (TyVarTy tv) (tyVarKind tv)
paDFunApply dfun ty_args
paDictOfTyApp (TyConApp tc _) ty_args
= do
- pa_class <- builtin paClass
- (dfun, ty_args') <- lookupInst pa_class [TyConApp tc ty_args]
- paDFunApply (Var dfun) ty_args'
+ dfun <- traceMaybeV "paDictOfTyApp" (ppr tc) (lookupTyConPA tc)
+ paDFunApply (Var dfun) ty_args
paDictOfTyApp ty ty_args = pprPanic "paDictOfTyApp" (ppr ty)
+paDFunType :: TyCon -> VM Type
+paDFunType tc
+ = do
+ margs <- mapM paDictArgType tvs
+ res <- mkPADictType (mkTyConApp tc arg_tys)
+ return . mkForAllTys tvs
+ $ mkFunTys [arg | Just arg <- margs] res
+ where
+ tvs = tyConTyVars tc
+ arg_tys = mkTyVarTys tvs
+
paDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
paDFunApply dfun tys
= do
dict <- paDictOfType ty
return $ mkApps (Var fn) [Type ty, dict]
+mkPR :: Type -> VM CoreExpr
+mkPR = paMethod mkPRVar
+
lengthPA :: CoreExpr -> VM CoreExpr
-lengthPA x = liftM (`App` x) (paMethod lengthPAVar (exprType x))
+lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty)
+ where
+ ty = splitPArrayTy (exprType x)
replicatePA :: CoreExpr -> CoreExpr -> VM CoreExpr
replicatePA len x = liftM (`mkApps` [len,x])
emptyPA :: Type -> VM CoreExpr
emptyPA = paMethod emptyPAVar
-lookupPArrayFamInst :: Type -> VM (TyCon, [Type])
-lookupPArrayFamInst ty = builtin parrayTyCon >>= (`lookupFamInst` [ty])
+liftPA :: CoreExpr -> VM CoreExpr
+liftPA x
+ = do
+ lc <- builtin liftingContext
+ replicatePA (Var lc) x
+
+newLocalVVar :: FastString -> Type -> VM VVar
+newLocalVVar fs vty
+ = do
+ lty <- mkPArrayType vty
+ vv <- newLocalVar fs vty
+ lv <- newLocalVar fs lty
+ return (vv,lv)
+
+polyAbstract :: [TyVar] -> ((CoreExpr -> CoreExpr) -> VM a) -> VM a
+polyAbstract tvs p
+ = localV
+ $ do
+ mdicts <- mapM mk_dict_var tvs
+ zipWithM_ (\tv -> maybe (defLocalTyVar tv) (defLocalTyVarWithPA 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
+
+ mk_lams mdicts = mkLams (tvs ++ [dict | Just dict <- mdicts])
+
+polyApply :: CoreExpr -> [Type] -> VM CoreExpr
+polyApply expr tys
+ = do
+ dicts <- mapM paDictOfType tys
+ return $ expr `mkTyApps` tys `mkApps` dicts
+
+polyVApply :: VExpr -> [Type] -> VM VExpr
+polyVApply expr tys
+ = do
+ dicts <- mapM paDictOfType tys
+ return $ mapVect (\e -> e `mkTyApps` tys `mkApps` dicts) expr
+
+hoistBinding :: Var -> CoreExpr -> VM ()
+hoistBinding v e = updGEnv $ \env ->
+ env { global_bindings = (v,e) : global_bindings env }
hoistExpr :: FastString -> CoreExpr -> VM Var
hoistExpr fs expr
= do
var <- newLocalVar fs (exprType expr)
- updGEnv $ \env ->
- env { global_bindings = (var, expr) : global_bindings env }
+ hoistBinding var expr
return var
+hoistVExpr :: VExpr -> VM VVar
+hoistVExpr (ve, le)
+ = do
+ fs <- getBindName
+ vv <- hoistExpr ('v' `consFS` fs) ve
+ lv <- hoistExpr ('l' `consFS` fs) le
+ return (vv, lv)
+
+hoistPolyVExpr :: [TyVar] -> VM VExpr -> VM VExpr
+hoistPolyVExpr tvs p
+ = do
+ expr <- closedV . polyAbstract tvs $ \abstract ->
+ liftM (mapVect abstract) p
+ fn <- hoistVExpr expr
+ polyVApply (vVar fn) (mkTyVarTys tvs)
+
takeHoisted :: VM [(Var, CoreExpr)]
takeHoisted
= do
setGEnv $ env { global_bindings = [] }
return $ global_bindings env
+mkClosure :: Type -> Type -> Type -> VExpr -> VExpr -> VM VExpr
+mkClosure arg_ty res_ty env_ty (vfn,lfn) (venv,lenv)
+ = do
+ dict <- paDictOfType env_ty
+ mkv <- builtin mkClosureVar
+ mkl <- builtin mkClosurePVar
+ return (Var mkv `mkTyApps` [arg_ty, res_ty, env_ty] `mkApps` [dict, vfn, lfn, venv],
+ Var mkl `mkTyApps` [arg_ty, res_ty, env_ty] `mkApps` [dict, vfn, lfn, lenv])
+
+mkClosureApp :: VExpr -> VExpr -> VM VExpr
+mkClosureApp (vclo, lclo) (varg, larg)
+ = do
+ vapply <- builtin applyClosureVar
+ lapply <- builtin applyClosurePVar
+ return (Var vapply `mkTyApps` [arg_ty, res_ty] `mkApps` [vclo, varg],
+ Var lapply `mkTyApps` [arg_ty, res_ty] `mkApps` [lclo, larg])
+ where
+ (arg_ty, res_ty) = splitClosureTy (exprType vclo)
+
+buildClosures :: [TyVar] -> [VVar] -> [Type] -> Type -> VM VExpr -> VM VExpr
+buildClosures tvs vars [] res_ty mk_body
+ = mk_body
+buildClosures tvs vars [arg_ty] res_ty mk_body
+ = buildClosure tvs vars arg_ty res_ty mk_body
+buildClosures tvs vars (arg_ty : arg_tys) res_ty mk_body
+ = do
+ res_ty' <- mkClosureTypes arg_tys res_ty
+ arg <- newLocalVVar FSLIT("x") arg_ty
+ buildClosure tvs vars arg_ty res_ty'
+ . hoistPolyVExpr tvs
+ $ do
+ lc <- builtin liftingContext
+ clo <- buildClosures tvs (vars ++ [arg]) arg_tys res_ty mk_body
+ return $ vLams lc (vars ++ [arg]) clo
+
+-- (clo <x1,...,xn> <f,f^>, aclo (Arr lc xs1 ... xsn) <f,f^>)
+-- where
+-- f = \env v -> case env of <x1,...,xn> -> e x1 ... xn v
+-- f^ = \env v -> case env of Arr l xs1 ... xsn -> e^ l x1 ... xn v
+--
+buildClosure :: [TyVar] -> [VVar] -> Type -> Type -> VM VExpr -> VM VExpr
+buildClosure tvs vars arg_ty res_ty mk_body
+ = do
+ (env_ty, env, bind) <- buildEnv vars
+ env_bndr <- newLocalVVar FSLIT("env") env_ty
+ arg_bndr <- newLocalVVar FSLIT("arg") arg_ty
+
+ fn <- hoistPolyVExpr tvs
+ $ do
+ lc <- builtin liftingContext
+ body <- mk_body
+ body' <- bind (vVar env_bndr)
+ (vVarApps lc body (vars ++ [arg_bndr]))
+ return (vLamsWithoutLC [env_bndr, arg_bndr] body')
+
+ mkClosure arg_ty res_ty env_ty fn env
+
+buildEnv :: [VVar] -> VM (Type, VExpr, VExpr -> VExpr -> VM VExpr)
+buildEnv vvs
+ = do
+ lc <- builtin liftingContext
+ let (ty, venv, vbind) = mkVectEnv tys vs
+ (lenv, lbind) <- mkLiftEnv lc tys ls
+ return (ty, (venv, lenv),
+ \(venv,lenv) (vbody,lbody) ->
+ do
+ let vbody' = vbind venv vbody
+ lbody' <- lbind lenv lbody
+ return (vbody', lbody'))
+ where
+ (vs,ls) = unzip vvs
+ tys = map idType vs
+
+mkVectEnv :: [Type] -> [Var] -> (Type, CoreExpr, CoreExpr -> CoreExpr -> CoreExpr)
+mkVectEnv [] [] = (unitTy, Var unitDataConId, \env body -> body)
+mkVectEnv [ty] [v] = (ty, Var v, \env body -> Let (NonRec v env) body)
+mkVectEnv tys vs = (ty, mkCoreTup (map Var vs),
+ \env body -> Case env (mkWildId ty) (exprType body)
+ [(DataAlt (tupleCon Boxed (length vs)), vs, body)])
+ where
+ ty = mkCoreTupTy tys
+
+mkLiftEnv :: Var -> [Type] -> [Var] -> VM (CoreExpr, CoreExpr -> CoreExpr -> VM CoreExpr)
+mkLiftEnv lc [ty] [v]
+ = return (Var v, \env body ->
+ do
+ len <- lengthPA (Var v)
+ return . Let (NonRec v env)
+ $ Case len lc (exprType body) [(DEFAULT, [], body)])
+
+-- NOTE: this transparently deals with empty environments
+mkLiftEnv lc tys vs
+ = do
+ (env_tc, env_tyargs) <- parrayReprTyCon vty
+ let [env_con] = tyConDataCons env_tc
+
+ env = Var (dataConWrapId env_con)
+ `mkTyApps` env_tyargs
+ `mkVarApps` (lc : vs)
+
+ bind env body = let scrut = unwrapFamInstScrut env_tc env_tyargs env
+ in
+ return $ Case scrut (mkWildId (exprType scrut))
+ (exprType body)
+ [(DataAlt env_con, lc : bndrs, body)]
+ return (env, bind)
+ where
+ vty = mkCoreTupTy tys
+
+ bndrs | null vs = [mkWildId unitTy]
+ | otherwise = vs
+
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