Try and allocate vregs spilled/reloaded from some slot to the same hreg

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

diff --git a/compiler/nativeGen/GraphBase.hs b/compiler/nativeGen/GraphBase.hs
index 5b0971d..04eda96 100644 (file)
--- a/compiler/nativeGen/GraphBase.hs
+++ b/compiler/nativeGen/GraphBase.hs
@@ -1,11 +1,5 @@
 
 -- | Types for the general graph colorer.
-{-# OPTIONS -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
---     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
--- for details
 
 module GraphBase (
        Triv,
@@ -22,6 +16,7 @@ where
 import UniqSet
 import UniqFM
 
+
 -- | A fn to check if a node is trivially colorable
 --     For graphs who's color classes are disjoint then a node is 'trivially colorable'
 --     when it has less neighbors and exclusions than available colors for that node.
@@ -51,7 +46,9 @@ data Graph k cls color
        -- | All active nodes in the graph.
          graphMap              :: UniqFM (Node k cls color)  }
 
+
 -- | An empty graph.   
+initGraph :: Graph k cls color
 initGraph
        = Graph
        { graphMap              = emptyUFM }
@@ -87,7 +84,7 @@ data Node k cls color
        , nodeConflicts         :: UniqSet k
 
        -- | Colors that cannot be used by this node.
-       , nodeExclusions        :: UniqSet color        
+       , nodeExclusions        :: UniqSet color
 
        -- | Colors that this node would prefer to be, in decending order.
        , nodePreference        :: [color]  
@@ -111,3 +108,4 @@ newNode k cls
 
 
 
+