Extract a method. No functional change.

llvm-svn: 126893
diff --git a/llvm/lib/CodeGen/SplitKit.h b/llvm/lib/CodeGen/SplitKit.h
index a0d935d..3a4d710 100644
--- a/llvm/lib/CodeGen/SplitKit.h
+++ b/llvm/lib/CodeGen/SplitKit.h
@@ -246,6 +246,10 @@
                     SlotIndex Idx,
                     const MachineBasicBlock *IdxMBB);
 
+  /// extendPHIKillRanges - Extend the ranges of all values killed by original
+  /// parent PHIDefs.
+  void extendPHIKillRanges();
+
   /// rewriteAssigned - Rewrite all uses of Edit.getReg() to assigned registers.
   void rewriteAssigned();