Added code to support unusable Suggested Colors.

llvm-svn: 922
diff --git a/llvm/lib/CodeGen/RegAlloc/PhyRegAlloc.h b/llvm/lib/CodeGen/RegAlloc/PhyRegAlloc.h
index bd41c88..998fa11 100644
--- a/llvm/lib/CodeGen/RegAlloc/PhyRegAlloc.h
+++ b/llvm/lib/CodeGen/RegAlloc/PhyRegAlloc.h
@@ -87,6 +87,8 @@
   void setCallInterferences(const MachineInstr *MInst, 
 			    const LiveVarSet *const LVSetAft );
 
+  void markUnusableSugColors();
+
   inline void constructLiveRanges() 
     { LRI.constructLiveRanges(); }