Renamed MachineInstrIndex to LiveIndex.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83254 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index 33d82d0..bee5d93 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -684,7 +684,7 @@
     vni = stackInterval.getValNumInfo(0);
   else
     vni = stackInterval.getNextValue(
-      MachineInstrIndex(), 0, false, lss->getVNInfoAllocator());
+      LiveIndex(), 0, false, lss->getVNInfoAllocator());
 
   LiveInterval &rhsInterval = lis->getInterval(spilled->reg);
   stackInterval.MergeRangesInAsValue(rhsInterval, vni);