Clean up the Spiller.h interface.

The earliestStart argument is entirely specific to linear scan allocation, and
can be easily calculated by RegAllocLinearScan.

Replace std::vector with SmallVector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Spiller.h b/lib/CodeGen/Spiller.h
index 3d5172a..59bc0ec 100644
--- a/lib/CodeGen/Spiller.h
+++ b/lib/CodeGen/Spiller.h
@@ -11,7 +11,6 @@
 #define LLVM_CODEGEN_SPILLER_H
 
 #include "llvm/ADT/SmallVector.h"
-#include <vector>
 
 namespace llvm {
 
@@ -36,12 +35,9 @@
     /// @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.
-    /// @param earliestIndex The earliest point for splitting. (OK, it's another
-    ///                      pointer to the allocator guts).
     virtual void spill(LiveInterval *li,
-                       std::vector<LiveInterval*> &newIntervals,
-                       SmallVectorImpl<LiveInterval*> &spillIs,
-                       SlotIndex *earliestIndex = 0) = 0;
+                       SmallVectorImpl<LiveInterval*> &newIntervals,
+                       SmallVectorImpl<LiveInterval*> &spillIs) = 0;
 
   };