Eliminate the extendRange() wrapper.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139608 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SplitKit.h

@@ -304,10 +304,6 @@ private:
                         MachineBasicBlock &MBB,
                         MachineBasicBlock::iterator I);
 
-  /// extendRange - Extend the live range of Edit.get(RegIdx) so it reaches Idx.
-  /// Insert PHIDefs as needed to preserve SSA form.
-  void extendRange(unsigned RegIdx, SlotIndex Idx);
-
   /// transferValues - Transfer values to the new ranges.
   /// Return true if any ranges were skipped.
   bool transferValues();