Fix warnings in CmmCPS

[ghc-hetmet.git] / compiler / vectorise / VectMonad.hs

diff --git a/compiler/vectorise/VectMonad.hs b/compiler/vectorise/VectMonad.hs
index b47da65..56f5b8f 100644 (file)
--- a/compiler/vectorise/VectMonad.hs
+++ b/compiler/vectorise/VectMonad.hs
@@ -2,12 +2,13 @@ module VectMonad (
   Scope(..),
   VM,
 
-  noV, tryV, maybeV, traceMaybeV, orElseV, fixV, localV, closedV, initV,
+  noV, traceNoV, tryV, maybeV, traceMaybeV, orElseV, fixV, localV, closedV,
+  initV, cantVectorise, maybeCantVectorise, maybeCantVectoriseM,
   liftDs,
   cloneName, cloneId, cloneVar,
   newExportedVar, newLocalVar, newDummyVar, newTyVar,
   
-  Builtins(..), sumTyCon, prodTyCon, uarrTy, intPrimArrayTy,
+  Builtins(..), sumTyCon, prodTyCon,
   combinePAVar,
   builtin, builtins,
 
@@ -36,7 +37,8 @@ module VectMonad (
 
 import VectBuiltIn
 
-import HscTypes
+import HscTypes hiding  ( MonadThings(..) )
+import Module           ( PackageId )
 import CoreSyn
 import TyCon
 import DataCon
@@ -174,7 +176,7 @@ emptyLocalEnv = LocalEnv {
                    local_vars     = emptyVarEnv
                  , local_tyvars   = []
                  , local_tyvar_pa = emptyVarEnv
-                 , local_bind_name  = FSLIT("fn")
+                 , local_bind_name  = fsLit "fn"
                  }
 
 -- FIXME
@@ -204,6 +206,25 @@ instance Monad VM where
                                         Yes genv' lenv' x -> runVM (f x) bi genv' lenv'
                                         No                -> return No
 
+
+cantVectorise :: String -> SDoc -> a
+cantVectorise s d = pgmError
+                  . showSDocDump
+                  $ vcat [text "*** Vectorisation error ***",
+                          nest 4 $ sep [text s, nest 4 d]]
+
+maybeCantVectorise :: String -> SDoc -> Maybe a -> a
+maybeCantVectorise s d Nothing  = cantVectorise s d
+maybeCantVectorise _ _ (Just x) = x
+
+maybeCantVectoriseM :: Monad m => String -> SDoc -> m (Maybe a) -> m a
+maybeCantVectoriseM s d p
+  = do
+      r <- p
+      case r of
+        Just x  -> return x
+        Nothing -> cantVectorise s d
+
 noV :: VM a
 noV = VM $ \_ _ _ -> return No
 
@@ -253,6 +274,9 @@ closedV p = do
 liftDs :: DsM a -> VM a
 liftDs p = VM $ \_ genv lenv -> do { x <- p; return (Yes genv lenv x) }
 
+liftBuiltinDs :: (Builtins -> DsM a) -> VM a
+liftBuiltinDs p = VM $ \bi genv lenv -> do { x <- p bi; return (Yes genv lenv x)}
+
 builtin :: (Builtins -> a) -> VM a
 builtin f = VM $ \bi genv lenv -> return (Yes genv lenv (f bi))
 
@@ -331,7 +355,7 @@ newLocalVar fs ty
       return $ mkSysLocal fs u ty
 
 newDummyVar :: Type -> VM Var
-newDummyVar = newLocalVar FSLIT("ds")
+newDummyVar = newLocalVar (fsLit "vv")
 
 newTyVar :: FastString -> Kind -> VM Var
 newTyVar fs k
@@ -355,8 +379,8 @@ lookupVar v
       case r of
         Just e  -> return (Local e)
         Nothing -> liftM Global
-                 $  traceMaybeV "lookupVar" (ppr v)
-                                (readGEnv $ \env -> lookupVarEnv (global_vars env) v)
+                . maybeCantVectoriseM "Variable not vectorised:" (ppr v)
+                . readGEnv $ \env -> lookupVarEnv (global_vars env) v
 
 lookupTyCon :: TyCon -> VM (Maybe TyCon)
 lookupTyCon tc
@@ -378,10 +402,10 @@ defDataCon dc dc' = updGEnv $ \env ->
   env { global_datacons = extendNameEnv (global_datacons env) (dataConName dc) dc' }
 
 lookupPrimPArray :: TyCon -> VM (Maybe TyCon)
-lookupPrimPArray = liftDs . primPArray
+lookupPrimPArray = liftBuiltinDs . primPArray
 
 lookupPrimMethod :: TyCon -> String -> VM (Maybe Var)
-lookupPrimMethod tycon = liftDs . primMethod tycon
+lookupPrimMethod tycon = liftBuiltinDs . primMethod tycon
 
 lookupTyConPA :: TyCon -> VM (Maybe Var)
 lookupTyConPA tc = readGEnv $ \env -> lookupNameEnv (global_pa_funs env) (tyConName tc)
@@ -475,10 +499,12 @@ lookupFamInst tycon tys
                       (ppr $ mkTyConApp tycon tys)
        }
 
-initV :: HscEnv -> ModGuts -> VectInfo -> VM a -> IO (Maybe (VectInfo, a))
-initV hsc_env guts info p
+initV :: PackageId -> HscEnv -> ModGuts -> VectInfo -> VM a -> IO (Maybe (VectInfo, a))
+initV pkg hsc_env guts info p
   = do
-      Just r <- initDs hsc_env (mg_module guts)
+         -- XXX: ignores error messages and warnings, check that this is
+         -- indeed ok (the use of "Just r" suggests so)
+      (_,Just r) <- initDs hsc_env (mg_module guts)
                                (mg_rdr_env guts)
                                (mg_types guts)
                                go
@@ -487,7 +513,7 @@ initV hsc_env guts info p
 
     go =
       do
-        builtins       <- initBuiltins
+        builtins       <- initBuiltins pkg
         builtin_vars   <- initBuiltinVars builtins
         builtin_tycons <- initBuiltinTyCons builtins
         let builtin_datacons = initBuiltinDataCons builtins