7 files changed, 49 insertions, 0 deletions
diff --git a/compiler/nativeGen/RegAlloc/Graph/ArchBase.hs b/compiler/nativeGen/RegAlloc/Graph/ArchBase.hs
index 6172cde5de..83ad5feb75 100644
--- a/compiler/nativeGen/RegAlloc/Graph/ArchBase.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/ArchBase.hs
@@ -1,4 +1,11 @@
 
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 -- | Utils for calculating general worst, bound, squeese and free, functions.
 --
 --	as per: "A Generalized Algorithm for Graph-Coloring Register Allocation"
diff --git a/compiler/nativeGen/RegAlloc/Graph/ArchX86.hs b/compiler/nativeGen/RegAlloc/Graph/ArchX86.hs
index e12d62deeb..c9ee334634 100644
--- a/compiler/nativeGen/RegAlloc/Graph/ArchX86.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/ArchX86.hs
@@ -1,4 +1,11 @@
 
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 -- | A description of the register set of the X86.
 --	This isn't used directly in GHC proper.
 --
diff --git a/compiler/nativeGen/RegAlloc/Graph/Coalesce.hs b/compiler/nativeGen/RegAlloc/Graph/Coalesce.hs
index 41901bb9da..0680beac00 100644
--- a/compiler/nativeGen/RegAlloc/Graph/Coalesce.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/Coalesce.hs
@@ -1,6 +1,13 @@
 -- | Register coalescing.
 --
 
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 module RegAlloc.Graph.Coalesce (
 	regCoalesce,
 	slurpJoinMovs
diff --git a/compiler/nativeGen/RegAlloc/Graph/Main.hs b/compiler/nativeGen/RegAlloc/Graph/Main.hs
index efc04930cd..5b6b3b28a3 100644
--- a/compiler/nativeGen/RegAlloc/Graph/Main.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/Main.hs
@@ -4,6 +4,13 @@
 -- TODO: The colors in graphviz graphs for x86_64 and ppc could be nicer.
 --
 
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 module RegAlloc.Graph.Main ( 
 	regAlloc
 ) 
diff --git a/compiler/nativeGen/RegAlloc/Graph/SpillClean.hs b/compiler/nativeGen/RegAlloc/Graph/SpillClean.hs
index 94c274dfaf..ec58378255 100644
--- a/compiler/nativeGen/RegAlloc/Graph/SpillClean.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/SpillClean.hs
@@ -23,6 +23,13 @@
 --	This also works if the reloads in B1\/B2 were spills instead, because
 --	spilling %r1 to a slot makes that slot have the same value as %r1.
 --
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 module RegAlloc.Graph.SpillClean (
 	cleanSpills
 )
diff --git a/compiler/nativeGen/RegAlloc/Graph/SpillCost.hs b/compiler/nativeGen/RegAlloc/Graph/SpillCost.hs
index e11532e15f..222e222c75 100644
--- a/compiler/nativeGen/RegAlloc/Graph/SpillCost.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/SpillCost.hs
@@ -1,4 +1,11 @@
 
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 module RegAlloc.Graph.SpillCost (
 	SpillCostRecord,
 	plusSpillCostRecord,
diff --git a/compiler/nativeGen/RegAlloc/Graph/Stats.hs b/compiler/nativeGen/RegAlloc/Graph/Stats.hs
index 626262c658..69be2f0ed6 100644
--- a/compiler/nativeGen/RegAlloc/Graph/Stats.hs
+++ b/compiler/nativeGen/RegAlloc/Graph/Stats.hs
@@ -1,6 +1,13 @@
 {-# OPTIONS -fno-warn-missing-signatures #-}
 -- | Carries interesting info for debugging / profiling of the 
 --	graph coloring register allocator.
+{-# OPTIONS -fno-warn-tabs #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and
+-- detab the module (please do the detabbing in a separate patch). See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
+-- for details
+
 module RegAlloc.Graph.Stats (
 	RegAllocStats (..),