Update to LLVM 3.5a.

Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617
diff --git a/lib/CodeGen/LiveRangeEdit.cpp b/lib/CodeGen/LiveRangeEdit.cpp
index cb70c43..891eaab 100644
--- a/lib/CodeGen/LiveRangeEdit.cpp
+++ b/lib/CodeGen/LiveRangeEdit.cpp
@@ -167,9 +167,7 @@
   MachineInstr *DefMI = 0, *UseMI = 0;
 
   // Check that there is a single def and a single use.
-  for (MachineRegisterInfo::reg_nodbg_iterator I = MRI.reg_nodbg_begin(LI->reg),
-       E = MRI.reg_nodbg_end(); I != E; ++I) {
-    MachineOperand &MO = I.getOperand();
+  for (MachineOperand &MO : MRI.reg_nodbg_operands(LI->reg)) {
     MachineInstr *MI = MO.getParent();
     if (MO.isDef()) {
       if (DefMI && DefMI != MI)