X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FNameSet.lhs;h=e60ea23d278e0b33f565d7e72262aadf7dd36685;hb=5664dcaca1117ac0ecf9188406e8539fc7f7fe78;hp=d0e55dec687b00c86b40a0181f9ede47568c74f3;hpb=0065d5ab628975892cea1ec7303f968c3338cbe1;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/NameSet.lhs b/compiler/basicTypes/NameSet.lhs
index d0e55de..e60ea23 100644
--- a/compiler/basicTypes/NameSet.lhs
+++ b/compiler/basicTypes/NameSet.lhs
@@ -1,7 +1,7 @@
 %
+% (c) The University of Glasgow 2006
 % (c) The GRASP/AQUA Project, Glasgow University, 1998
 %
-\section[NameSet]{@NameSets@} 
 
 \begin{code}
 module NameSet (
@@ -28,7 +28,6 @@ import Name
 import UniqSet
 \end{code}
 
-
 %************************************************************************
 %*									*
 \subsection[Sets of names}
@@ -54,7 +53,7 @@ foldNameSet	   :: (Name -> b -> b) -> b -> NameSet -> b
 filterNameSet	   :: (Name -> Bool) -> NameSet -> NameSet
 intersectNameSet   :: NameSet -> NameSet -> NameSet
 intersectsNameSet  :: NameSet -> NameSet -> Bool 	-- True if non-empty intersection
-	-- (s1 `intersectsVarSet` s2) doesn't compute s2 if s1 is empty
+	-- (s1 `intersectsNameSet` s2) doesn't compute s2 if s1 is empty
 
 isEmptyNameSet    = isEmptyUniqSet
 emptyNameSet	  = emptyUniqSet
@@ -98,6 +97,7 @@ mkFVs	 :: [Name] -> FreeVars
 delFV    :: Name -> FreeVars -> FreeVars
 delFVs   :: [Name] -> FreeVars -> FreeVars
 
+isEmptyFVs :: NameSet -> Bool
 isEmptyFVs  = isEmptyNameSet
 emptyFVs    = emptyNameSet
 plusFVs     = unionManyNameSets
@@ -148,14 +148,14 @@ plusDU = (++)
 duDefs :: DefUses -> Defs
 duDefs dus = foldr get emptyNameSet dus
   where
-    get (Nothing, u1) d2 = d2
-    get (Just d1, u1) d2 = d1 `unionNameSets` d2
+    get (Nothing, _u1) d2 = d2
+    get (Just d1, _u1) d2 = d1 `unionNameSets` d2
 
 duUses :: DefUses -> Uses
 -- Just like allUses, but defs are not eliminated
 duUses dus = foldr get emptyNameSet dus
   where
-    get (d1, u1) u2 = u1 `unionNameSets` u2
+    get (_d1, u1) u2 = u1 `unionNameSets` u2
 
 allUses :: DefUses -> Uses
 -- Collect all uses, regardless of
@@ -187,4 +187,4 @@ findUses dus uses
 	= rhs_uses `unionNameSets` uses
 	| otherwise	-- No def is used
 	= uses
-\end{code}
\ No newline at end of file
+\end{code}