12 files changed, 6 insertions, 15 deletions
diff --git a/compiler/nativeGen/BlockLayout.hs b/compiler/nativeGen/BlockLayout.hs
index 8904b4113b..3755ed5db6 100644
--- a/compiler/nativeGen/BlockLayout.hs
+++ b/compiler/nativeGen/BlockLayout.hs
@@ -37,7 +37,6 @@ import Maybes
 --import Debug
 --import Debug.Trace
 import ListSetOps (removeDups)
-import PprCmm ()
 
 import OrdList
 import Data.List
diff --git a/compiler/nativeGen/CFG.hs b/compiler/nativeGen/CFG.hs
index af0c6da455..44ddecd216 100644
--- a/compiler/nativeGen/CFG.hs
+++ b/compiler/nativeGen/CFG.hs
@@ -56,7 +56,7 @@ import Outputable
 --import Debug
 --import OrdList
 --import Debug.Trace
-import PprCmm ()
+import PprCmm () -- For Outputable instances
 import qualified DynFlags as D
 
 import Data.List
diff --git a/compiler/nativeGen/PPC/Ppr.hs b/compiler/nativeGen/PPC/Ppr.hs
index 4254f23122..0c3aaccda2 100644
--- a/compiler/nativeGen/PPC/Ppr.hs
+++ b/compiler/nativeGen/PPC/Ppr.hs
@@ -27,7 +27,7 @@ import Hoopl.Label
 
 import BlockId
 import CLabel
-import PprCmmExpr ()
+import PprCmmExpr () -- For Outputable instances
 
 import Unique                ( pprUniqueAlways, getUnique )
 import GHC.Platform
diff --git a/compiler/nativeGen/RegAlloc/Graph/Stats.hs b/compiler/nativeGen/RegAlloc/Graph/Stats.hs
index 487e3ee03a..f765224072 100644
--- a/compiler/nativeGen/RegAlloc/Graph/Stats.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/Stats.hs
@@ -28,7 +28,6 @@ import RegClass
 import Reg
 import TargetReg
 
-import PprCmm()
 import Outputable
 import UniqFM
 import UniqSet
diff --git a/compiler/nativeGen/RegAlloc/Liveness.hs b/compiler/nativeGen/RegAlloc/Liveness.hs
index bbb7976a75..3f160ea678 100644
--- a/compiler/nativeGen/RegAlloc/Liveness.hs
+++ b/compiler/nativeGen/RegAlloc/Liveness.hs
@@ -45,7 +45,6 @@ import CFG
 import Hoopl.Collections
 import Hoopl.Label
 import Cmm hiding (RegSet, emptyRegSet)
-import PprCmm()
 
 import Digraph
 import DynFlags
diff --git a/compiler/nativeGen/SPARC/CodeGen.hs b/compiler/nativeGen/SPARC/CodeGen.hs
index 056d0c6fbf..bb8bbe16b6 100644
--- a/compiler/nativeGen/SPARC/CodeGen.hs
+++ b/compiler/nativeGen/SPARC/CodeGen.hs
@@ -31,7 +31,6 @@ import SPARC.CodeGen.CondCode
 import SPARC.CodeGen.Gen64
 import SPARC.CodeGen.Gen32
 import SPARC.CodeGen.Base
-import SPARC.Ppr        ()
 import SPARC.Instr
 import SPARC.Imm
 import SPARC.AddrMode
diff --git a/compiler/nativeGen/SPARC/CodeGen/Base.hs b/compiler/nativeGen/SPARC/CodeGen/Base.hs
index e64af0c44e..97c54a9364 100644
--- a/compiler/nativeGen/SPARC/CodeGen/Base.hs
+++ b/compiler/nativeGen/SPARC/CodeGen/Base.hs
@@ -25,7 +25,7 @@ import Reg
 import CodeGen.Platform
 import DynFlags
 import Cmm
-import PprCmmExpr ()
+import PprCmmExpr () -- For Outputable instances
 import GHC.Platform
 
 import Outputable
diff --git a/compiler/nativeGen/SPARC/CodeGen/Expand.hs b/compiler/nativeGen/SPARC/CodeGen/Expand.hs
index 0b318740db..a29c24dcd4 100644
--- a/compiler/nativeGen/SPARC/CodeGen/Expand.hs
+++ b/compiler/nativeGen/SPARC/CodeGen/Expand.hs
@@ -11,7 +11,6 @@ import SPARC.Instr
 import SPARC.Imm
 import SPARC.AddrMode
 import SPARC.Regs
-import SPARC.Ppr        ()
 import Instruction
 import Reg
 import Format
diff --git a/compiler/nativeGen/SPARC/CodeGen/Gen64.hs b/compiler/nativeGen/SPARC/CodeGen/Gen64.hs
index 6fa7482f9b..18df9e19a3 100644
--- a/compiler/nativeGen/SPARC/CodeGen/Gen64.hs
+++ b/compiler/nativeGen/SPARC/CodeGen/Gen64.hs
@@ -16,7 +16,7 @@ import SPARC.Regs
 import SPARC.AddrMode
 import SPARC.Imm
 import SPARC.Instr
-import SPARC.Ppr()
+-- import SPARC.Ppr()
 import NCGMonad
 import Instruction
 import Format
diff --git a/compiler/nativeGen/SPARC/CodeGen/Sanity.hs b/compiler/nativeGen/SPARC/CodeGen/Sanity.hs
index fcf5b65bde..7f9bfed229 100644
--- a/compiler/nativeGen/SPARC/CodeGen/Sanity.hs
+++ b/compiler/nativeGen/SPARC/CodeGen/Sanity.hs
@@ -9,7 +9,7 @@ where
 import GhcPrelude
 
 import SPARC.Instr
-import SPARC.Ppr        ()
+import SPARC.Ppr        () -- For Outputable instances
 import Instruction
 
 import Cmm
diff --git a/compiler/nativeGen/SPARC/Ppr.hs b/compiler/nativeGen/SPARC/Ppr.hs
index fc67f77541..2bec7ec01f 100644
--- a/compiler/nativeGen/SPARC/Ppr.hs
+++ b/compiler/nativeGen/SPARC/Ppr.hs
@@ -39,7 +39,7 @@ import Format
 import PprBase
 
 import Cmm hiding (topInfoTable)
-import PprCmm()
+import PprCmm() -- For Outputable instances
 import BlockId
 import CLabel
 import Hoopl.Label
diff --git a/compiler/nativeGen/X86/CodeGen.hs b/compiler/nativeGen/X86/CodeGen.hs
index 13662f6807..4aeb4eb635 100644
--- a/compiler/nativeGen/X86/CodeGen.hs
+++ b/compiler/nativeGen/X86/CodeGen.hs
@@ -38,9 +38,6 @@ import X86.Cond
 import X86.Regs
 import X86.RegInfo
 
---TODO: Remove - Just for development/debugging
-import X86.Ppr()
-
 import CodeGen.Platform
 import CPrim
 import Debug            ( DebugBlock(..), UnwindPoint(..), UnwindTable
@@ -60,7 +57,6 @@ import GHC.Platform
 import BasicTypes
 import BlockId
 import Module           ( primUnitId )
-import PprCmm           ()
 import CmmUtils
 import CmmSwitch
 import Cmm