-module VectType ( vectTyCon, vectType )
+module VectType ( vectTyCon, vectType, vectTypeEnv,
+ PAInstance, buildPADict )
where
#include "HsVersions.h"
import VectMonad
import VectUtils
+import VectCore
+import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
+import CoreSyn
+import CoreUtils
+import BuildTyCl
import DataCon
import TyCon
import Type
import TypeRep
+import Coercion
+import FamInstEnv ( FamInst, mkLocalFamInst )
+import InstEnv ( Instance, mkLocalInstance, instanceDFunId )
import OccName
import MkId
-import BasicTypes ( StrictnessMark(..), boolToRecFlag )
+import BasicTypes ( StrictnessMark(..), OverlapFlag(..), boolToRecFlag )
+import Var ( Var )
+import Id ( mkWildId )
+import Name ( Name, getOccName )
+import NameEnv
+import TysWiredIn ( unitTy, intTy, intDataCon )
+import TysPrim ( intPrimTy )
+import Unique
import UniqFM
import UniqSet
import Digraph ( SCC(..), stronglyConnComp )
import Outputable
-import Control.Monad ( liftM2, zipWithM_ )
+import Control.Monad ( liftM, liftM2, zipWithM, zipWithM_ )
+import Data.List ( inits, tails, zipWith4, zipWith5 )
-- ----------------------------------------------------------------------------
-- Types
type TyConGroup = ([TyCon], UniqSet TyCon)
+data PAInstance = PAInstance {
+ painstDFun :: Var
+ , painstOrigTyCon :: TyCon
+ , painstVectTyCon :: TyCon
+ , painstArrTyCon :: TyCon
+ }
+
+vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [(Var, CoreExpr)])
+vectTypeEnv env
+ = do
+ cs <- readGEnv $ mk_map . global_tycons
+ let (conv_tcs, keep_tcs) = classifyTyCons cs groups
+ keep_dcs = concatMap tyConDataCons keep_tcs
+ zipWithM_ defTyCon keep_tcs keep_tcs
+ zipWithM_ defDataCon keep_dcs keep_dcs
+ new_tcs <- vectTyConDecls conv_tcs
+
+ let orig_tcs = keep_tcs ++ conv_tcs
+ vect_tcs = keep_tcs ++ new_tcs
+
+ repr_tcs <- zipWithM buildPReprTyCon orig_tcs vect_tcs
+ parr_tcs <- zipWithM buildPArrayTyCon orig_tcs vect_tcs
+ dfuns <- mapM mkPADFun vect_tcs
+ defTyConPAs (zip vect_tcs dfuns)
+ binds <- sequence (zipWith5 buildTyConBindings orig_tcs
+ vect_tcs
+ repr_tcs
+ parr_tcs
+ dfuns)
+
+ let all_new_tcs = new_tcs ++ repr_tcs ++ parr_tcs
+
+ let new_env = extendTypeEnvList env
+ (map ATyCon all_new_tcs
+ ++ [ADataCon dc | tc <- all_new_tcs
+ , dc <- tyConDataCons tc])
+
+ return (new_env, map mkLocalFamInst (repr_tcs ++ parr_tcs), concat binds)
+ where
+ tycons = typeEnvTyCons env
+ groups = tyConGroups tycons
+
+ mk_map env = listToUFM_Directly [(u, getUnique n /= u) | (u,n) <- nameEnvUniqueElts env]
+
+ keep_tc tc = let dcs = tyConDataCons tc
+ in
+ defTyCon tc tc >> zipWithM_ defDataCon dcs dcs
+
+
vectTyConDecls :: [TyCon] -> VM [TyCon]
vectTyConDecls tcs = fixV $ \tcs' ->
do
name' <- cloneName mkVectTyConOcc name
rhs' <- vectAlgTyConRhs (algTyConRhs tc)
- return $ mkAlgTyCon name'
- kind
- tyvars
- [] -- no stupid theta
- rhs'
- [] -- no selector ids
- NoParentTyCon -- FIXME
- rec_flag -- FIXME: is this ok?
- False -- FIXME: no generics
- False -- not GADT syntax
+ liftDs $ buildAlgTyCon name'
+ tyvars
+ [] -- no stupid theta
+ rhs'
+ rec_flag -- FIXME: is this ok?
+ False -- FIXME: no generics
+ False -- not GADT syntax
+ Nothing -- not a family instance
where
name = tyConName tc
- kind = tyConKind tc
tyvars = tyConTyVars tc
rec_flag = boolToRecFlag (isRecursiveTyCon tc)
name' <- cloneName mkVectDataConOcc name
tycon' <- vectTyCon tycon
arg_tys <- mapM vectType rep_arg_tys
- wrk_name <- cloneName mkDataConWorkerOcc name'
-
- let ids = mkDataConIds (panic "vectDataCon: wrapped id")
- wrk_name
- data_con
- data_con = mkDataCon name'
- False -- not infix
- (map (const NotMarkedStrict) arg_tys)
- [] -- no labelled fields
- univ_tvs
- [] -- no existential tvs for now
- [] -- no eq spec for now
- [] -- no theta
- arg_tys
- tycon'
- [] -- no stupid theta
- ids
- return data_con
+
+ liftDs $ buildDataCon name'
+ False -- not infix
+ (map (const NotMarkedStrict) arg_tys)
+ [] -- no labelled fields
+ univ_tvs
+ [] -- no existential tvs for now
+ [] -- no eq spec for now
+ [] -- no context
+ arg_tys
+ tycon'
where
name = dataConName dc
univ_tvs = dataConUnivTyVars dc
- rep_arg_tys = dataConOrigArgTys dc
+ rep_arg_tys = dataConRepArgTys dc
tycon = dataConTyCon dc
+mk_fam_inst :: TyCon -> TyCon -> (TyCon, [Type])
+mk_fam_inst fam_tc arg_tc
+ = (fam_tc, [mkTyConApp arg_tc . mkTyVarTys $ tyConTyVars arg_tc])
+
+buildPReprTyCon :: TyCon -> TyCon -> VM TyCon
+buildPReprTyCon orig_tc vect_tc
+ = do
+ name <- cloneName mkPReprTyConOcc (tyConName orig_tc)
+ rhs_ty <- buildPReprType vect_tc
+ prepr_tc <- builtin preprTyCon
+ liftDs $ buildSynTyCon name
+ tyvars
+ (SynonymTyCon rhs_ty)
+ (Just $ mk_fam_inst prepr_tc vect_tc)
+ where
+ tyvars = tyConTyVars vect_tc
+
+buildPReprType :: TyCon -> VM Type
+buildPReprType = mkPRepr . map dataConRepArgTys . tyConDataCons
+
+buildToPRepr :: Shape -> TyCon -> TyCon -> TyCon -> VM CoreExpr
+buildToPRepr _ vect_tc prepr_tc _
+ = do
+ arg <- newLocalVar FSLIT("x") arg_ty
+ bndrss <- mapM (mapM (newLocalVar FSLIT("x"))) rep_tys
+ (alt_bodies, res_ty) <- mkToPRepr $ map (map Var) bndrss
+
+ return . Lam arg
+ . wrapFamInstBody prepr_tc var_tys
+ . Case (Var arg) (mkWildId arg_ty) res_ty
+ $ zipWith3 mk_alt data_cons bndrss alt_bodies
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ arg_ty = mkTyConApp vect_tc var_tys
+ data_cons = tyConDataCons vect_tc
+ rep_tys = map dataConRepArgTys data_cons
+
+ mk_alt data_con bndrs body = (DataAlt data_con, bndrs, body)
+
+buildToArrPRepr :: Shape -> TyCon -> TyCon -> TyCon -> VM CoreExpr
+buildToArrPRepr _ vect_tc prepr_tc arr_tc
+ = do
+ arg_ty <- mkPArrayType el_ty
+ rep_tys <- mapM (mapM mkPArrayType) rep_el_tys
+
+ arg <- newLocalVar FSLIT("xs") arg_ty
+ bndrss <- mapM (mapM (newLocalVar FSLIT("ys"))) rep_tys
+ len <- newLocalVar FSLIT("len") intPrimTy
+ sel <- newLocalVar FSLIT("sel") =<< mkPArrayType intTy
+
+ let add_sel xs | has_selector = sel : xs
+ | otherwise = xs
+
+ all_bndrs = len : add_sel (concat bndrss)
+
+ res <- parrayCoerce prepr_tc var_tys
+ =<< mkToArrPRepr (Var len) (Var sel) (map (map Var) bndrss)
+ res_ty <- mkPArrayType =<< mkPReprType el_ty
+
+ return . Lam arg
+ $ Case (unwrapFamInstScrut arr_tc var_tys (Var arg))
+ (mkWildId (mkTyConApp arr_tc var_tys))
+ res_ty
+ [(DataAlt arr_dc, all_bndrs, res)]
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ el_ty = mkTyConApp vect_tc var_tys
+ data_cons = tyConDataCons vect_tc
+ rep_el_tys = map dataConRepArgTys data_cons
+
+ [arr_dc] = tyConDataCons arr_tc
+
+ has_selector | [_] <- data_cons = False
+ | otherwise = True
+
+
+buildFromPRepr :: Shape -> TyCon -> TyCon -> TyCon -> VM CoreExpr
+buildFromPRepr _ vect_tc prepr_tc _
+ = do
+ arg_ty <- mkPReprType res_ty
+ arg <- newLocalVar FSLIT("x") arg_ty
+ alts <- mapM mk_alt data_cons
+ body <- mkFromPRepr (unwrapFamInstScrut prepr_tc var_tys (Var arg))
+ res_ty alts
+ return $ Lam arg body
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ res_ty = mkTyConApp vect_tc var_tys
+ data_cons = tyConDataCons vect_tc
+
+ mk_alt dc = do
+ bndrs <- mapM (newLocalVar FSLIT("x")) $ dataConRepArgTys dc
+ return (bndrs, mkConApp dc (map Type var_tys ++ map Var bndrs))
+
+buildFromArrPRepr :: Shape -> TyCon -> TyCon -> TyCon -> VM CoreExpr
+buildFromArrPRepr _ vect_tc prepr_tc arr_tc
+ = mkFromArrPRepr undefined undefined undefined undefined undefined undefined
+
+buildPRDict :: Shape -> TyCon -> TyCon -> TyCon -> VM CoreExpr
+buildPRDict _ vect_tc prepr_tc _
+ = prCoerce prepr_tc var_tys
+ =<< prDictOfType (mkTyConApp prepr_tc var_tys)
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+
+buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
+buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
+ do
+ name' <- cloneName mkPArrayTyConOcc orig_name
+ rhs <- buildPArrayTyConRhs orig_name vect_tc repr_tc
+ parray <- builtin parrayTyCon
+
+ liftDs $ buildAlgTyCon name'
+ tyvars
+ [] -- no stupid theta
+ rhs
+ rec_flag -- FIXME: is this ok?
+ False -- FIXME: no generics
+ False -- not GADT syntax
+ (Just $ mk_fam_inst parray vect_tc)
+ where
+ orig_name = tyConName orig_tc
+ tyvars = tyConTyVars vect_tc
+ rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
+
+
+buildPArrayTyConRhs :: Name -> TyCon -> TyCon -> VM AlgTyConRhs
+buildPArrayTyConRhs orig_name vect_tc repr_tc
+ = do
+ data_con <- buildPArrayDataCon orig_name vect_tc repr_tc
+ return $ DataTyCon { data_cons = [data_con], is_enum = False }
+
+buildPArrayDataCon :: Name -> TyCon -> TyCon -> VM DataCon
+buildPArrayDataCon orig_name vect_tc repr_tc
+ = do
+ dc_name <- cloneName mkPArrayDataConOcc orig_name
+ shape <- tyConShape vect_tc
+ repr_tys <- mapM mkPArrayType types
+
+ liftDs $ buildDataCon dc_name
+ False -- not infix
+ (shapeStrictness shape ++ map (const NotMarkedStrict) repr_tys)
+ [] -- no field labels
+ (tyConTyVars vect_tc)
+ [] -- no existentials
+ [] -- no eq spec
+ [] -- no context
+ (shapeReprTys shape ++ repr_tys)
+ repr_tc
+ where
+ types = [ty | dc <- tyConDataCons vect_tc
+ , ty <- dataConRepArgTys dc]
+
+mkPADFun :: TyCon -> VM Var
+mkPADFun vect_tc
+ = newExportedVar (mkPADFunOcc $ getOccName vect_tc) =<< paDFunType vect_tc
+
+data Shape = Shape {
+ shapeReprTys :: [Type]
+ , shapeStrictness :: [StrictnessMark]
+ , shapeLength :: [CoreExpr] -> VM CoreExpr
+ , shapeReplicate :: CoreExpr -> CoreExpr -> VM [CoreExpr]
+ }
+
+tyConShape :: TyCon -> VM Shape
+tyConShape vect_tc
+ | isProductTyCon vect_tc
+ = return $ Shape {
+ shapeReprTys = [intPrimTy]
+ , shapeStrictness = [NotMarkedStrict]
+ , shapeLength = \[len] -> return len
+ , shapeReplicate = \len _ -> return [len]
+ }
+
+ | otherwise
+ = do
+ repr_ty <- mkPArrayType intTy -- FIXME: we want to unbox this
+ return $ Shape {
+ shapeReprTys = [repr_ty]
+ , shapeStrictness = [MarkedStrict]
+ , shapeLength = \[sel] -> lengthPA sel
+ , shapeReplicate = \len n -> do
+ e <- replicatePA len n
+ return [e]
+ }
+
+buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> Var
+ -> VM [(Var, CoreExpr)]
+buildTyConBindings orig_tc vect_tc prepr_tc arr_tc dfun
+ = do
+ shape <- tyConShape vect_tc
+ sequence_ (zipWith4 (vectDataConWorker shape vect_tc arr_tc arr_dc)
+ orig_dcs
+ vect_dcs
+ (inits repr_tys)
+ (tails repr_tys))
+ dict <- buildPADict shape vect_tc prepr_tc arr_tc dfun
+ binds <- takeHoisted
+ return $ (dfun, dict) : binds
+ where
+ orig_dcs = tyConDataCons orig_tc
+ vect_dcs = tyConDataCons vect_tc
+ [arr_dc] = tyConDataCons arr_tc
+
+ repr_tys = map dataConRepArgTys vect_dcs
+
+vectDataConWorker :: Shape -> TyCon -> TyCon -> DataCon
+ -> DataCon -> DataCon -> [[Type]] -> [[Type]]
+ -> VM ()
+vectDataConWorker shape vect_tc arr_tc arr_dc orig_dc vect_dc pre (dc_tys : post)
+ = do
+ clo <- closedV
+ . inBind orig_worker
+ . polyAbstract tvs $ \abstract ->
+ liftM (abstract . vectorised)
+ $ buildClosures tvs [] dc_tys res_ty (liftM2 (,) mk_vect mk_lift)
+
+ worker <- cloneId mkVectOcc orig_worker (exprType clo)
+ hoistBinding worker clo
+ defGlobalVar orig_worker worker
+ return ()
+ where
+ tvs = tyConTyVars vect_tc
+ arg_tys = mkTyVarTys tvs
+ res_ty = mkTyConApp vect_tc arg_tys
+
+ orig_worker = dataConWorkId orig_dc
+
+ mk_vect = return . mkConApp vect_dc $ map Type arg_tys
+ mk_lift = do
+ len <- newLocalVar FSLIT("n") intPrimTy
+ arr_tys <- mapM mkPArrayType dc_tys
+ args <- mapM (newLocalVar FSLIT("xs")) arr_tys
+ shapes <- shapeReplicate shape
+ (Var len)
+ (mkDataConTag vect_dc)
+
+ empty_pre <- mapM emptyPA (concat pre)
+ empty_post <- mapM emptyPA (concat post)
+
+ return . mkLams (len : args)
+ . wrapFamInstBody arr_tc arg_tys
+ . mkConApp arr_dc
+ $ map Type arg_tys ++ shapes
+ ++ empty_pre
+ ++ map Var args
+ ++ empty_post
+
+buildPADict :: Shape -> TyCon -> TyCon -> TyCon -> Var -> VM CoreExpr
+buildPADict shape vect_tc prepr_tc arr_tc dfun
+ = polyAbstract tvs $ \abstract ->
+ do
+ meth_binds <- mapM (mk_method shape) paMethods
+ let meth_exprs = map (Var . fst) meth_binds
+
+ pa_dc <- builtin paDataCon
+ let dict = mkConApp pa_dc (Type (mkTyConApp vect_tc arg_tys) : meth_exprs)
+ body = Let (Rec meth_binds) dict
+ return . mkInlineMe $ abstract body
+ where
+ tvs = tyConTyVars arr_tc
+ arg_tys = mkTyVarTys tvs
+
+ mk_method shape (name, build)
+ = localV
+ $ do
+ body <- build shape vect_tc prepr_tc arr_tc
+ var <- newLocalVar name (exprType body)
+ return (var, mkInlineMe body)
+
+paMethods = [(FSLIT("toPRepr"), buildToPRepr),
+ (FSLIT("fromPRepr"), buildFromPRepr),
+ (FSLIT("toArrPRepr"), buildToArrPRepr),
+ (FSLIT("fromArrPRepr"), buildFromArrPRepr),
+ (FSLIT("dictPRepr"), buildPRDict)]
+
-- | Split the given tycons into two sets depending on whether they have to be
-- converted (first list) or not (second list). The first argument contains
-- information about the conversion status of external tycons:
tyConsOfType ty
| Just ty' <- coreView ty = tyConsOfType ty'
tyConsOfType (TyVarTy v) = emptyUniqSet
-tyConsOfType (TyConApp tc tys) = tyConsOfTypes tys `addOneToUniqSet` tc
+tyConsOfType (TyConApp tc tys) = extend (tyConsOfTypes tys)
+ where
+ extend | isUnLiftedTyCon tc
+ || isTupleTyCon tc = id
+
+ | otherwise = (`addOneToUniqSet` tc)
+
tyConsOfType (AppTy a b) = tyConsOfType a `unionUniqSets` tyConsOfType b
tyConsOfType (FunTy a b) = (tyConsOfType a `unionUniqSets` tyConsOfType b)
`addOneToUniqSet` funTyCon