When RemoveCopyByCommutingDef is creating additional identity copies, just use

[oota-llvm.git] / lib / CodeGen / Spiller.h

diff --git a/lib/CodeGen/Spiller.h b/lib/CodeGen/Spiller.h
index cad054d744c4a7cf6fe2dcba1cada7bad1e9a8f1..59bc0ec6ae70f2c01b15d43457f3eb64af36771f 100644 (file)
--- a/lib/CodeGen/Spiller.h
+++ b/lib/CodeGen/Spiller.h
@@ -10,13 +10,14 @@
 #ifndef LLVM_CODEGEN_SPILLER_H
 #define LLVM_CODEGEN_SPILLER_H
 
-#include <vector>
+#include "llvm/ADT/SmallVector.h"
 
 namespace llvm {
+
   class LiveInterval;
-  class LiveIntervals;
-  class LiveStacks;
   class MachineFunction;
+  class MachineFunctionPass;
+  class SlotIndex;
   class VirtRegMap;
 
   /// Spiller interface.
@@ -26,12 +27,24 @@ namespace llvm {
   class Spiller {
   public:
     virtual ~Spiller() = 0;
-    virtual std::vector<LiveInterval*> spill(LiveInterval *li) = 0;
+
+    /// spill - Spill the given live interval. The method used will depend on
+    /// the Spiller implementation selected.
+    ///
+    /// @param li            The live interval to be spilled.
+    /// @param spillIs       A list of intervals that are about to be spilled,
+    ///                      and so cannot be used for remat etc.
+    /// @param newIntervals  The newly created intervals will be appended here.
+    virtual void spill(LiveInterval *li,
+                       SmallVectorImpl<LiveInterval*> &newIntervals,
+                       SmallVectorImpl<LiveInterval*> &spillIs) = 0;
+
   };
 
   /// Create and return a spiller object, as specified on the command line.
-  Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li,
-                         LiveStacks *ls, VirtRegMap *vrm);
+  Spiller* createSpiller(MachineFunctionPass &pass,
+                         MachineFunction &mf,
+                         VirtRegMap &vrm);
 }
 
 #endif