Remove code that is dead now that we need >= 6.12 to build

[ghc-hetmet.git] / compiler / cmm / CmmZipUtil.hs

diff --git a/compiler/cmm/CmmZipUtil.hs b/compiler/cmm/CmmZipUtil.hs
index 9f0993d..a91d76f 100644 (file)
--- a/compiler/cmm/CmmZipUtil.hs
+++ b/compiler/cmm/CmmZipUtil.hs
@@ -9,12 +9,11 @@ import Prelude hiding (last, unzip)
 import ZipCfg
 
 import Maybes
-import UniqSet
 
 -- | Compute the predecessors of each /reachable/ block
 zipPreds :: LastNode l => LGraph m l -> BlockEnv BlockSet
 zipPreds g = foldl add emptyBlockEnv (postorder_dfs g)
-    where add env block@(Block id _ _) =
+    where add env block@(Block id _) =
             foldl (\env sid ->
                        let preds = lookupBlockEnv env sid `orElse` emptyBlockSet
                        in  extendBlockEnv env sid (extendBlockSet preds id))
@@ -32,7 +31,7 @@ givesUniquePredecessorTo g = \id -> elemBlockSet id singlePreds
           add_pred pair@(single, multi) id =
               if elemBlockSet id multi then pair
               else if elemBlockSet id single then
-                       (delOneFromUniqSet single id, extendBlockSet multi id)
+                       (removeBlockSet single id, extendBlockSet multi id)
                    else
                        (extendBlockSet single id, multi)