Fixed warnings in vectorise/VectCore

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

diff --git a/compiler/vectorise/Vectorise.hs b/compiler/vectorise/Vectorise.hs
index fac66ec..c501163 100644 (file)
--- a/compiler/vectorise/Vectorise.hs
+++ b/compiler/vectorise/Vectorise.hs
@@ -42,7 +42,7 @@ import Module               ( Module )
 import DsMonad hiding (mapAndUnzipM)
 import DsUtils              ( mkCoreTup, mkCoreTupTy )
 
-import Literal              ( Literal )
+import Literal              ( Literal, mkMachInt )
 import PrelNames
 import TysWiredIn
 import TysPrim              ( intPrimTy )
@@ -216,6 +216,8 @@ vectLiteral lit
       return (Lit lit, lexpr)
 
 vectPolyExpr :: CoreExprWithFVs -> VM VExpr
+vectPolyExpr (_, AnnNote note expr)
+  = liftM (vNote note) $ vectPolyExpr expr
 vectPolyExpr expr
   = polyAbstract tvs $ \abstract ->
     do
@@ -241,6 +243,17 @@ vectExpr e@(_, AnnApp _ arg)
   where
     (fn, tys) = collectAnnTypeArgs e
 
+vectExpr (_, AnnApp (_, AnnVar v) (_, AnnLit lit))
+  | Just con <- isDataConId_maybe v
+  , is_special_con con
+  = do
+      let vexpr = App (Var v) (Lit lit)
+      lexpr <- liftPA vexpr
+      return (vexpr, lexpr)
+  where
+    is_special_con con = con `elem` [intDataCon, floatDataCon, doubleDataCon]
+                
+
 vectExpr (_, AnnApp fn arg)
   = do
       arg_ty' <- vectType arg_ty
@@ -287,6 +300,8 @@ vectExpr e@(fvs, AnnLam bndr _)
   where
     (bs,body) = collectAnnValBinders e
 
+vectExpr e = pprPanic "vectExpr" (ppr $ deAnnotate e)
+
 vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
 vectLam fvs bs body
   = do
@@ -335,6 +350,14 @@ vectAlgCase tycon ty_args scrut bndr ty [(DEFAULT, [], body)]
       (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
       return $ vCaseDEFAULT vscrut vbndr vty lty vbody
 
+vectAlgCase tycon ty_args scrut bndr ty [(DataAlt dc, [], body)]
+  = do
+      vscrut <- vectExpr scrut
+      vty    <- vectType ty
+      lty    <- mkPArrayType vty
+      (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+      return $ vCaseDEFAULT vscrut vbndr vty lty vbody
+
 vectAlgCase tycon ty_args scrut bndr ty [(DataAlt dc, bndrs, body)]
   = do
       vect_tc <- maybeV (lookupTyCon tycon)
@@ -366,7 +389,7 @@ vectAlgCase tycon ty_args scrut bndr ty alts
       shape_bndrs <- arrShapeVars repr
       (len, sel, indices) <- arrSelector repr (map Var shape_bndrs)
 
-      (vbndr, valts) <- vect_scrut_bndr $ mapM (proc_alt sel lty) alts'
+      (vbndr, valts) <- vect_scrut_bndr $ mapM (proc_alt sel vty lty) alts'
       let (vect_dcs, vect_bndrss, lift_bndrss, vbodies) = unzip4 valts
 
       vexpr <- vectExpr scrut
@@ -397,14 +420,14 @@ vectAlgCase tycon ty_args scrut bndr ty alts
     cmp DEFAULT       _             = LT
     cmp _             DEFAULT       = GT
 
-    proc_alt sel lty (DataAlt dc, bndrs, body)
+    proc_alt sel vty lty (DataAlt dc, bndrs, body)
       = do
           vect_dc <- maybeV (lookupDataCon dc)
           let tag = mkDataConTag vect_dc
               fvs = freeVarsOf body `delVarSetList` bndrs
           (vect_bndrs, lift_bndrs, vbody)
             <- vect_alt_bndrs bndrs
-             $ \len -> packLiftingContext len sel tag fvs lty
+             $ \len -> packLiftingContext len sel tag fvs vty lty
              $ vectExpr body
 
           return (vect_dc, vect_bndrs, lift_bndrs, vbody)
@@ -432,8 +455,9 @@ vectAlgCase tycon ty_args scrut bndr ty alts
 
     mk_vect_alt vect_dc bndrs body = (DataAlt vect_dc, bndrs, body)
 
-packLiftingContext :: CoreExpr -> CoreExpr -> CoreExpr -> VarSet -> Type -> VM VExpr -> VM VExpr
-packLiftingContext len shape tag fvs res_ty p
+packLiftingContext :: CoreExpr -> CoreExpr -> CoreExpr -> VarSet
+                   -> Type -> Type -> VM VExpr -> VM VExpr
+packLiftingContext len shape tag fvs vty lty p
   = do
       select <- builtin selectPAIntPrimVar
       let sel_expr = mkApps (Var select) [shape, tag]
@@ -445,9 +469,12 @@ packLiftingContext len shape tag fvs res_ty p
                 . filter isLocalId
                 $ varSetElems fvs
           (vexpr, lexpr) <- p
+          empty <- emptyPA vty
           return (vexpr, Let (NonRec sel_var sel_expr)
                          . mkLets (concat bnds)
-                         $ Case len lc_var res_ty [(DEFAULT, [], lexpr)])
+                         $ Case len lc_var lty
+                             [(DEFAULT, [], lexpr),
+                              (LitAlt (mkMachInt 0), [], empty)])
 
 packFreeVar :: CoreExpr -> CoreExpr -> Var -> VM [CoreBind]
 packFreeVar len sel v