Fix CodingStyle#Warnings URLs

[ghc-hetmet.git] / compiler / ndpFlatten / Flattening.hs

diff --git a/compiler/ndpFlatten/Flattening.hs b/compiler/ndpFlatten/Flattening.hs
index 18daaa6..220c571 100644 (file)
--- a/compiler/ndpFlatten/Flattening.hs
+++ b/compiler/ndpFlatten/Flattening.hs
@@ -1,3 +1,10 @@
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
 --  $Id$
 --
 --  Copyright (c) [2001..2002] Manuel M T Chakravarty & Gabriele Keller
@@ -55,16 +62,16 @@ module Flattening (
 #include "HsVersions.h"
 
 -- friends
-import NDPCoreUtils (tupleTyArgs, funTyArgs, parrElemTy, isDefault,
+import NDPCoreUtils (tupleTyArgs, funTyArgs, isDefault,
                     isLit, mkPArrTy, mkTuple, isSimpleExpr, substIdEnv)
 import FlattenMonad (Flatten, runFlatten, mkBind, extendContext, packContext,
                     liftVar, liftConst, intersectWithContext, mk'fst,
-                    mk'lengthP, mk'replicateP, mk'mapP, mk'bpermuteDftP,
-                    mk'indexOfP,mk'eq,mk'neq) 
+                    mk'mapP, mk'bpermuteDftP, mk'indexOfP,mk'eq,mk'neq) 
 
 -- GHC
 import TcType      ( tcIsForAllTy, tcView )
 import TypeRep     ( Type(..) )
+import Coercion     ( coercionKind )
 import StaticFlags  (opt_Flatten)
 import Panic        (panic)
 import ErrUtils     (dumpIfSet_dyn)
@@ -74,9 +81,9 @@ import Literal      (Literal, literalType)
 import Var         (Var(..), idType, isTyVar)
 import Id          (setIdType)
 import DataCon     (DataCon, dataConTag)
-import HscTypes            ( ModGuts(..), ModGuts, HscEnv(..), hscEPS )
+import HscTypes            ( ModGuts(..), HscEnv(..), hscEPS )
 import CoreFVs     (exprFreeVars)
-import CoreSyn     (Expr(..), Bind(..), Alt(..), AltCon(..), Note(..),
+import CoreSyn     (Expr(..), Bind(..), Alt, AltCon(..),
                     CoreBndr, CoreExpr, CoreBind, mkLams, mkLets,
                     mkApps, mkIntLitInt)  
 import PprCore      (pprCoreExpr)
@@ -89,10 +96,6 @@ import BasicTypes   (Boxity(..))
 import Outputable
 import FastString
 
-
--- FIXME: fro debugging - remove this
-import TRACE    (trace)
-
 -- standard
 import Monad        (liftM, foldM)
 
@@ -448,11 +451,12 @@ lift cExpr@(Case expr b _ alts)  =
                 else extendContext [lb] (liftCaseDataCon b alts)
     letWrapper lExpr b lalts
 
-lift (Note (Coerce t1 t2) expr) =
-  do  
+lift (Cast expr co) =
+  do
     (lexpr, t) <- lift expr
-    let lt1 = liftTy t1
-    return ((Note (Coerce lt1 (liftTy t2)) lexpr), lt1)
+    let lco = liftTy co
+    let (t1, t2) = coercionKind lco
+    return ((Cast expr lco), t2)
 
 lift (Note note expr) =
   do