X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fvectorise%2FVectType.hs;h=29b68435dee817c2d97c60b3bc637b3459cbe853;hb=ae7dacf4c3b014fa0ec6f94ac5b2e0a19b1b2f45;hp=fb0b9dc25ace34b86dfd377c1aa1c785fc08a879;hpb=f8bfbc444dc77d9d8c5f19ff33e198da43c7a8f0;p=ghc-hetmet.git

diff --git a/compiler/vectorise/VectType.hs b/compiler/vectorise/VectType.hs
index fb0b9dc..29b6843 100644
--- a/compiler/vectorise/VectType.hs
+++ b/compiler/vectorise/VectType.hs
@@ -6,13 +6,21 @@ where
 import VectMonad
 import VectUtils
 
+import DataCon
 import TyCon
 import Type
 import TypeRep
+import OccName
+import MkId
+import BasicTypes        ( StrictnessMark(..), boolToRecFlag )
+
+import UniqFM
+import UniqSet
+import Digraph           ( SCC(..), stronglyConnComp )
 
 import Outputable
 
-import Control.Monad  ( liftM2 )
+import Control.Monad  ( liftM2, zipWithM_ )
 
 -- ----------------------------------------------------------------------------
 -- Types
@@ -47,3 +55,141 @@ vectType ty@(ForAllTy _ _)
 
 vectType ty = pprPanic "vectType:" (ppr ty)
 
+-- ----------------------------------------------------------------------------
+-- Type definitions
+
+type TyConGroup = ([TyCon], UniqSet TyCon)
+
+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: 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
+  where
+    name        = dataConName dc
+    univ_tvs    = dataConUnivTyVars dc
+    rep_arg_tys = dataConOrigArgTys dc
+    tycon       = dataConTyCon 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) = tyConsOfTypes tys `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
+