Change the createSpiller interface to take a MachineFunctionPass argument.

The spillers can pluck the analyses they need from the pass reference.

Switch some never-null pointers to references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108969 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Spiller.h b/lib/CodeGen/Spiller.h
index b907f21..3d5172a 100644
--- a/lib/CodeGen/Spiller.h
+++ b/lib/CodeGen/Spiller.h
@@ -16,14 +16,10 @@
 namespace llvm {
 
   class LiveInterval;
-  class LiveIntervals;
-  class LiveStacks;
   class MachineFunction;
-  class MachineInstr;
-  class MachineLoopInfo;
+  class MachineFunctionPass;
   class SlotIndex;
   class VirtRegMap;
-  class VNInfo;
 
   /// Spiller interface.
   ///
@@ -50,8 +46,9 @@
   };
 
   /// Create and return a spiller object, as specified on the command line.
-  Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li,
-                         MachineLoopInfo *loopInfo, VirtRegMap *vrm);
+  Spiller* createSpiller(MachineFunctionPass &pass,
+                         MachineFunction &mf,
+                         VirtRegMap &vrm);
 }
 
 #endif