-module VectType ( vectTyCon, vectType )
+module VectType ( vectTyCon, vectType, vectTypeEnv )
where
#include "HsVersions.h"
import VectMonad
import VectUtils
+import HscTypes ( TypeEnv, extendTypeEnvList, typeEnvTyCons )
+import DataCon
import TyCon
import Type
import TypeRep
+import Coercion
+import FamInstEnv ( FamInst, mkLocalFamInst )
+import InstEnv ( Instance )
+import OccName
+import MkId
+import BasicTypes ( StrictnessMark(..), boolToRecFlag )
+import Name ( Name )
+import NameEnv
+import TysWiredIn ( intTy )
+
+import Unique
+import UniqFM
+import UniqSet
+import Digraph ( SCC(..), stronglyConnComp )
import Outputable
-import Control.Monad ( liftM2 )
+import Control.Monad ( liftM2, zipWithM, zipWithM_ )
+
+-- ----------------------------------------------------------------------------
+-- Types
vectTyCon :: TyCon -> VM TyCon
vectTyCon tc
vectType ty = pprPanic "vectType:" (ppr ty)
+-- ----------------------------------------------------------------------------
+-- Type definitions
+
+type TyConGroup = ([TyCon], UniqSet TyCon)
+
+vectTypeEnv :: TypeEnv -> VM (TypeEnv, [FamInst], [Instance])
+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
+ vect_tcs <- vectTyConDecls conv_tcs
+ parr_tcs1 <- zipWithM buildPArrayTyCon keep_tcs keep_tcs
+ parr_tcs2 <- zipWithM buildPArrayTyCon conv_tcs vect_tcs
+ let new_tcs = vect_tcs ++ parr_tcs1 ++ parr_tcs2
+
+ let new_env = extendTypeEnvList env
+ (map ATyCon new_tcs
+ ++ [ADataCon dc | tc <- new_tcs
+ , dc <- tyConDataCons tc])
+
+ return (new_env, map mkLocalFamInst (parr_tcs1 ++ parr_tcs2), [])
+ 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
+ mapM_ (uncurry defTyCon) (lazy_zip tcs tcs')
+ mapM vectTyConDecl tcs
+ where
+ lazy_zip [] _ = []
+ lazy_zip (x:xs) ~(y:ys) = (x,y) : lazy_zip xs ys
+
+vectTyConDecl :: TyCon -> VM TyCon
+vectTyConDecl tc
+ = 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
+ where
+ name = tyConName tc
+ kind = tyConKind tc
+ tyvars = tyConTyVars tc
+ rec_flag = boolToRecFlag (isRecursiveTyCon tc)
+
+vectAlgTyConRhs :: AlgTyConRhs -> VM AlgTyConRhs
+vectAlgTyConRhs (DataTyCon { data_cons = data_cons
+ , is_enum = is_enum
+ })
+ = do
+ data_cons' <- mapM vectDataCon data_cons
+ zipWithM_ defDataCon data_cons data_cons'
+ return $ DataTyCon { data_cons = data_cons'
+ , is_enum = is_enum
+ }
+
+vectDataCon :: DataCon -> VM DataCon
+vectDataCon dc
+ | not . null $ dataConExTyVars dc = pprPanic "vectDataCon: existentials" (ppr dc)
+ | not . null $ dataConEqSpec dc = pprPanic "vectDataCon: eq spec" (ppr dc)
+ | otherwise
+ = do
+ name' <- cloneName mkVectDataConOcc name
+ tycon' <- vectTyCon tycon
+ arg_tys <- mapM vectType rep_arg_tys
+ wrk_name <- cloneName mkDataConWorkerOcc name'
+
+ let ids = mkDataConIds (panic "vectDataCon: wrapper 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
+ where
+ name = dataConName dc
+ univ_tvs = dataConUnivTyVars dc
+ rep_arg_tys = dataConRepArgTys dc
+ tycon = dataConTyCon dc
+
+buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
+buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
+ do
+ name' <- cloneName mkPArrayTyConOcc orig_name
+ parent <- buildPArrayParentInfo orig_name vect_tc repr_tc
+ rhs <- buildPArrayTyConRhs orig_name vect_tc repr_tc
+
+ return $ mkAlgTyCon name'
+ kind
+ tyvars
+ [] -- no stupid theta
+ rhs
+ [] -- no selector ids
+ parent
+ rec_flag -- FIXME: is this ok?
+ False -- FIXME: no generics
+ False -- not GADT syntax
+ where
+ orig_name = tyConName orig_tc
+ name = tyConName vect_tc
+ kind = tyConKind vect_tc
+ tyvars = tyConTyVars vect_tc
+ rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
+
+
+buildPArrayParentInfo :: Name -> TyCon -> TyCon -> VM TyConParent
+buildPArrayParentInfo orig_name vect_tc repr_tc
+ = do
+ parray_tc <- builtin parrayTyCon
+ co_name <- cloneName mkInstTyCoOcc (tyConName repr_tc)
+
+ let inst_tys = [mkTyConApp vect_tc (map mkTyVarTy tyvars)]
+
+ return . FamilyTyCon parray_tc inst_tys
+ $ mkFamInstCoercion co_name
+ tyvars
+ parray_tc
+ inst_tys
+ repr_tc
+ where
+ tyvars = tyConTyVars 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_ty <- mkPArrayType intTy -- FIXME: we want to unbox this!
+ repr_tys <- mapM mkPArrayType types
+ wrk_name <- cloneName mkDataConWorkerOcc dc_name
+ wrp_name <- cloneName mkDataConWrapperOcc dc_name
+
+ let ids = mkDataConIds wrp_name wrk_name data_con
+ data_con = mkDataCon dc_name
+ False
+ (MarkedStrict : map (const NotMarkedStrict) repr_tys)
+ []
+ (tyConTyVars vect_tc)
+ []
+ []
+ []
+ (shape_ty : repr_tys)
+ repr_tc
+ []
+ ids
+
+ return data_con
+ where
+ types = [ty | dc <- tyConDataCons vect_tc
+ , ty <- dataConRepArgTys dc]
+
+-- | 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:
+--
+-- * tycons which have converted versions are mapped to True
+-- * tycons which are not changed by vectorisation are mapped to False
+-- * tycons which can't be converted are not elements of the map
+--
+classifyTyCons :: UniqFM Bool -> [TyConGroup] -> ([TyCon], [TyCon])
+classifyTyCons = classify [] []
+ where
+ classify conv keep cs [] = (conv, keep)
+ classify conv keep cs ((tcs, ds) : rs)
+ | can_convert && must_convert
+ = classify (tcs ++ conv) keep (cs `addListToUFM` [(tc,True) | tc <- tcs]) rs
+ | can_convert
+ = classify conv (tcs ++ keep) (cs `addListToUFM` [(tc,False) | tc <- tcs]) rs
+ | otherwise
+ = classify conv keep cs rs
+ where
+ refs = ds `delListFromUniqSet` tcs
+
+ can_convert = isNullUFM (refs `minusUFM` cs) && all convertable tcs
+ must_convert = foldUFM (||) False (intersectUFM_C const cs refs)
+
+ convertable tc = isDataTyCon tc && all isVanillaDataCon (tyConDataCons tc)
+
+-- | Compute mutually recursive groups of tycons in topological order
+--
+tyConGroups :: [TyCon] -> [TyConGroup]
+tyConGroups tcs = map mk_grp (stronglyConnComp edges)
+ where
+ edges = [((tc, ds), tc, uniqSetToList ds) | tc <- tcs
+ , let ds = tyConsOfTyCon tc]
+
+ mk_grp (AcyclicSCC (tc, ds)) = ([tc], ds)
+ mk_grp (CyclicSCC els) = (tcs, unionManyUniqSets dss)
+ where
+ (tcs, dss) = unzip els
+
+tyConsOfTyCon :: TyCon -> UniqSet TyCon
+tyConsOfTyCon
+ = tyConsOfTypes . concatMap dataConRepArgTys . tyConDataCons
+
+tyConsOfType :: Type -> UniqSet TyCon
+tyConsOfType ty
+ | Just ty' <- coreView ty = tyConsOfType ty'
+tyConsOfType (TyVarTy v) = emptyUniqSet
+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
+tyConsOfType (ForAllTy _ ty) = tyConsOfType ty
+tyConsOfType other = pprPanic "ClosureConv.tyConsOfType" $ ppr other
+
+tyConsOfTypes :: [Type] -> UniqSet TyCon
+tyConsOfTypes = unionManyUniqSets . map tyConsOfType
+
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