Fix PR4034. Bug in LiveInterval::join when it's compacting new valno's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp
index c34b628..9dee892 100644
--- a/lib/CodeGen/LiveInterval.cpp
+++ b/lib/CodeGen/LiveInterval.cpp
@@ -458,7 +458,7 @@
   for (unsigned i = 0; i < NumNewVals; ++i) {
     VNInfo *VNI = NewVNInfo[i];
     if (VNI) {
-      if (i >= NumVals)
+      if (NumValNos >= NumVals)
         valnos.push_back(VNI);
       else 
         valnos[NumValNos] = VNI;