Remember to keep track of rematted values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116962 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveRangeEdit.cpp b/lib/CodeGen/LiveRangeEdit.cpp
index cc9c3a3..21e43bf 100644
--- a/lib/CodeGen/LiveRangeEdit.cpp
+++ b/lib/CodeGen/LiveRangeEdit.cpp
@@ -138,6 +138,7 @@
                                          const TargetRegisterInfo &tri) {
   assert(RM.OrigMI && "Invalid remat");
   tii.reMaterialize(MBB, MI, DestReg, 0, RM.OrigMI, tri);
+  rematted_.insert(RM.ParentVNI);
   return lis.InsertMachineInstrInMaps(--MI).getDefIndex();
 }