1 files changed, 154 insertions, 0 deletions
diff --git a/compiler/vectorise/Vectorise/Utils/Base.hs b/compiler/vectorise/Vectorise/Utils/Base.hs
new file mode 100644
index 0000000000..490eba60e2
--- /dev/null
+++ b/compiler/vectorise/Vectorise/Utils/Base.hs
@@ -0,0 +1,154 @@
+
+module Vectorise.Utils.Base (
+	voidType,
+	newLocalVVar,
+
+	mkDataConTagLit,
+	mkDataConTag, dataConTagZ,
+	mkBuiltinTyConApp,
+	mkBuiltinTyConApps,
+	mkWrapType,
+	mkClosureTypes,
+	mkPReprType,
+	mkPArrayType, splitPrimTyCon,
+	mkPArray,
+	mkPDataType,
+	mkBuiltinCo,
+	mkVScrut,
+	
+	pdataReprTyCon,
+	pdataReprDataCon,
+)
+where
+import Vectorise.Monad
+import Vectorise.Vect
+import Vectorise.Builtins
+
+import CoreSyn
+import CoreUtils
+import Coercion
+import Type
+import TyCon
+import DataCon
+import MkId
+import Literal
+import Outputable
+import FastString
+
+
+-- Simple Types ---------------------------------------------------------------
+voidType :: VM Type
+voidType = mkBuiltinTyConApp voidTyCon []
+
+
+-- Name Generation ------------------------------------------------------------
+newLocalVVar :: FastString -> Type -> VM VVar
+newLocalVVar fs vty
+  = do
+      lty <- mkPDataType vty
+      vv  <- newLocalVar fs vty
+      lv  <- newLocalVar fs lty
+      return (vv,lv)
+
+
+-- Constructors ---------------------------------------------------------------
+mkDataConTagLit :: DataCon -> Literal
+mkDataConTagLit = mkMachInt . toInteger . dataConTagZ
+
+
+mkDataConTag :: DataCon -> CoreExpr
+mkDataConTag = mkIntLitInt . dataConTagZ
+
+
+dataConTagZ :: DataCon -> Int
+dataConTagZ con = dataConTag con - fIRST_TAG
+
+
+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]
+
+
+mkWrapType :: Type -> VM Type
+mkWrapType ty = mkBuiltinTyConApp wrapTyCon [ty]
+
+
+mkClosureTypes :: [Type] -> Type -> VM Type
+mkClosureTypes = mkBuiltinTyConApps closureTyCon
+
+
+mkPReprType :: Type -> VM Type
+mkPReprType ty = mkBuiltinTyConApp preprTyCon [ty]
+
+
+-----
+mkPArrayType :: Type -> VM Type
+mkPArrayType ty
+  | Just tycon <- splitPrimTyCon ty
+  = do
+      r <- lookupPrimPArray tycon
+      case r of
+        Just arr -> return $ mkTyConApp arr []
+        Nothing  -> cantVectorise "Primitive tycon not vectorised" (ppr tycon)
+
+mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty]
+
+splitPrimTyCon :: Type -> Maybe TyCon
+splitPrimTyCon ty
+  | Just (tycon, []) <- splitTyConApp_maybe ty
+  , isPrimTyCon tycon
+  = Just tycon
+
+  | otherwise = Nothing
+
+
+------
+mkPArray :: Type -> CoreExpr -> CoreExpr -> VM CoreExpr
+mkPArray ty len dat = do
+                        tc <- builtin parrayTyCon
+                        let [dc] = tyConDataCons tc
+                        return $ mkConApp dc [Type ty, len, dat]
+
+
+mkPDataType :: Type -> VM Type
+mkPDataType ty = mkBuiltinTyConApp pdataTyCon [ty]
+
+
+mkBuiltinCo :: (Builtins -> TyCon) -> VM Coercion
+mkBuiltinCo get_tc
+  = do
+      tc <- builtin get_tc
+      return $ mkTyConApp tc []
+
+
+mkVScrut :: VExpr -> VM (CoreExpr, CoreExpr, TyCon, [Type])
+mkVScrut (ve, le)
+  = do
+      (tc, arg_tys) <- pdataReprTyCon ty
+      return (ve, unwrapFamInstScrut tc arg_tys le, tc, arg_tys)
+  where
+    ty = exprType ve
+
+pdataReprTyCon :: Type -> VM (TyCon, [Type])
+pdataReprTyCon ty = builtin pdataTyCon >>= (`lookupFamInst` [ty])
+
+
+pdataReprDataCon :: Type -> VM (DataCon, [Type])
+pdataReprDataCon ty
+  = do
+      (tc, arg_tys) <- pdataReprTyCon ty
+      let [dc] = tyConDataCons tc
+      return (dc, arg_tys)
+
+