Disentangle moving a machine instr from updating LiveIntervals.

llvm-svn: 150552
diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
index ba87f5a..da52df9 100644
--- a/llvm/lib/CodeGen/MachineScheduler.cpp
+++ b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -229,7 +229,8 @@
     if (&*InsertPos == MI)
       ++InsertPos;
     else {
-      Pass->LIS->moveInstr(InsertPos, MI);
+      BB->splice(InsertPos, BB, MI);
+      Pass->LIS->handleMove(MI);
       if (Begin == InsertPos)
         Begin = MI;
     }