Cure space leak in coloring register allocator

[ghc-hetmet.git] / compiler / nativeGen / GraphOps.hs

diff --git a/compiler/nativeGen/GraphOps.hs b/compiler/nativeGen/GraphOps.hs
index f918fd2..308cae0 100644 (file)
--- a/compiler/nativeGen/GraphOps.hs
+++ b/compiler/nativeGen/GraphOps.hs
@@ -187,13 +187,13 @@ addConflicts conflicts getClass
 
        | otherwise
        = graphMapModify
-       $ (\fm -> foldr (\u -> addConflictSet1 u getClass conflicts) fm
+       $ (\fm -> foldl' (\g u  -> addConflictSet1 u getClass conflicts g) fm
                $ uniqSetToList conflicts)
 
 
 addConflictSet1 u getClass set 
- = let set'    = delOneFromUniqSet set u
-   in  adjustWithDefaultUFM 
+ = case delOneFromUniqSet set u of
+    set' -> adjustWithDefaultUFM
                (\node -> node                  { nodeConflicts = unionUniqSets set' (nodeConflicts node) } )
                (newNode u (getClass u))        { nodeConflicts = set' }
                u
@@ -468,5 +468,4 @@ adjustUFM f k map
  = case lookupUFM map k of
        Nothing -> map
        Just a  -> addToUFM map k (f a)
-