6 files changed, 11 insertions, 0 deletions
diff --git a/compiler/cmm/Hoopl/Block.hs b/compiler/cmm/Hoopl/Block.hs
index 3623fcd242..c4ff1794e8 100644
--- a/compiler/cmm/Hoopl/Block.hs
+++ b/compiler/cmm/Hoopl/Block.hs
@@ -33,6 +33,7 @@ module Hoopl.Block
     , replaceLastNode
     ) where
 
+import GhcPrelude
 
 -- -----------------------------------------------------------------------------
 -- Shapes: Open and Closed
diff --git a/compiler/cmm/Hoopl/Collections.hs b/compiler/cmm/Hoopl/Collections.hs
index 679057626b..be28849b60 100644
--- a/compiler/cmm/Hoopl/Collections.hs
+++ b/compiler/cmm/Hoopl/Collections.hs
@@ -6,6 +6,8 @@ module Hoopl.Collections
     , mapInsertList, mapDeleteList, mapUnions
     ) where
 
+import GhcPrelude
+
 import Data.List (foldl', foldl1')
 
 class IsSet set where
diff --git a/compiler/cmm/Hoopl/Dataflow.hs b/compiler/cmm/Hoopl/Dataflow.hs
index c2ace502b3..b2a7716c62 100644
--- a/compiler/cmm/Hoopl/Dataflow.hs
+++ b/compiler/cmm/Hoopl/Dataflow.hs
@@ -33,6 +33,8 @@ module Hoopl.Dataflow
   )
 where
 
+import GhcPrelude
+
 import Cmm
 import UniqSupply
 
diff --git a/compiler/cmm/Hoopl/Graph.hs b/compiler/cmm/Hoopl/Graph.hs
index 87da072458..9a492d6279 100644
--- a/compiler/cmm/Hoopl/Graph.hs
+++ b/compiler/cmm/Hoopl/Graph.hs
@@ -18,6 +18,8 @@ module Hoopl.Graph
     ) where
 
 
+import GhcPrelude
+
 import Hoopl.Label
 import Hoopl.Block
 import Hoopl.Collections
diff --git a/compiler/cmm/Hoopl/Label.hs b/compiler/cmm/Hoopl/Label.hs
index 5ee4f72fc3..e28f92b6b9 100644
--- a/compiler/cmm/Hoopl/Label.hs
+++ b/compiler/cmm/Hoopl/Label.hs
@@ -11,6 +11,8 @@ module Hoopl.Label
     , uniqueToLbl
     ) where
 
+import GhcPrelude
+
 import Outputable
 
 import Hoopl.Collections
diff --git a/compiler/cmm/Hoopl/Unique.hs b/compiler/cmm/Hoopl/Unique.hs
index f27961bb28..f6fff985e2 100644
--- a/compiler/cmm/Hoopl/Unique.hs
+++ b/compiler/cmm/Hoopl/Unique.hs
@@ -9,6 +9,8 @@ module Hoopl.Unique
     , intToUnique
     ) where
 
+import GhcPrelude
+
 import qualified Data.IntMap as M
 import qualified Data.IntSet as S