diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp
index a7f1eb357ee..b0f09297b3e 100644
--- a/lib/CodeGen/LiveInterval.cpp
+++ b/lib/CodeGen/LiveInterval.cpp
@@ -164,8 +164,8 @@ bool LiveInterval::joinable(const LiveInterval &other, unsigned CopyIdx) const {
 void LiveInterval::getOverlapingRanges(const LiveInterval &other, 
                                        unsigned CopyIdx,
                                        std::vector<LiveRange*> &Ranges) {
-  const LiveRange *SourceLR = other.getLiveRangeContaining(CopyIdx-1);
-  const LiveRange *DestLR = getLiveRangeContaining(CopyIdx);
+  const LiveRange *SourceLR = getLiveRangeContaining(CopyIdx-1);
+  const LiveRange *DestLR = other.getLiveRangeContaining(CopyIdx);
   assert(SourceLR && DestLR && "Not joining due to a copy?");
   unsigned OtherValIdx = SourceLR->ValId;
   unsigned ThisValIdx = DestLR->ValId;
@@ -219,7 +219,7 @@ void LiveInterval::extendIntervalEndTo(Ranges::iterator I, unsigned NewEnd) {
   // If the newly formed range now touches the range after it and if they have
   // the same value number, merge the two ranges into one range.
   Ranges::iterator Next = next(I);
-  if (Next != ranges.end() && Next->start == I->end && Next->ValId == ValId) {
+  if (Next != ranges.end() && Next->start <= I->end && Next->ValId == ValId) {
     I->end = Next->end;
     ranges.erase(Next);
   }