diff --git a/lib/CodeGen/LiveIntervalUnion.cpp b/lib/CodeGen/LiveIntervalUnion.cpp
index 60a68806c55..9c579aff680 100644
--- a/lib/CodeGen/LiveIntervalUnion.cpp
+++ b/lib/CodeGen/LiveIntervalUnion.cpp
@@ -81,7 +81,6 @@ void LiveIntervalUnion::extract(LiveInterval &VirtReg) {
 
 void
 LiveIntervalUnion::print(raw_ostream &OS, const TargetRegisterInfo *TRI) const {
-  OS << "LIU " << PrintReg(RepReg, TRI);
   if (empty()) {
     OS << " empty\n";
     return;
diff --git a/lib/CodeGen/LiveIntervalUnion.h b/lib/CodeGen/LiveIntervalUnion.h
index dbf5ac122d5..4925abf6390 100644
--- a/lib/CodeGen/LiveIntervalUnion.h
+++ b/lib/CodeGen/LiveIntervalUnion.h
@@ -60,13 +60,11 @@ public:
   class Query;
 
 private:
-  const unsigned RepReg;  // representative register number
   unsigned Tag;           // unique tag for current contents.
   LiveSegments Segments;  // union of virtual reg segments
 
 public:
-  LiveIntervalUnion(unsigned r, Allocator &a) : RepReg(r), Tag(0), Segments(a)
-    {}
+  explicit LiveIntervalUnion(Allocator &a) : Tag(0), Segments(a) {}
 
   // Iterate over all segments in the union of live virtual registers ordered
   // by their starting position.
diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp
index 3c91330ecaf..5b2ec5e5aaa 100644
--- a/lib/CodeGen/RegAllocBase.cpp
+++ b/lib/CodeGen/RegAllocBase.cpp
@@ -96,7 +96,7 @@ void RegAllocBase::LiveUnionArray::init(LiveIntervalUnion::Allocator &allocator,
   Array =
     static_cast<LiveIntervalUnion*>(malloc(sizeof(LiveIntervalUnion)*NRegs));
   for (unsigned r = 0; r != NRegs; ++r)
-    new(Array + r) LiveIntervalUnion(r, allocator);
+    new(Array + r) LiveIntervalUnion(allocator);
 }
 
 void RegAllocBase::init(VirtRegMap &vrm, LiveIntervals &lis) {