diff --git a/llvm/lib/CodeGen/LiveIntervals.cpp b/llvm/lib/CodeGen/LiveIntervals.cpp
--- a/llvm/lib/CodeGen/LiveIntervals.cpp
+++ b/llvm/lib/CodeGen/LiveIntervals.cpp
@@ -199,11 +199,9 @@
     if (MRI->reg_nodbg_empty(Reg))
       continue;
     LiveInterval &LI = createEmptyInterval(Reg);
-    bool NeedSplit = computeVirtRegInterval(LI);
-    if (NeedSplit) {
-      SmallVector<LiveInterval*, 8> SplitLIs;
-      splitSeparateComponents(LI, SplitLIs);
-    }
+    computeVirtRegInterval(LI);
+    SmallVector<LiveInterval*, 8> SplitLIs;
+    splitSeparateComponents(LI, SplitLIs);
   }
 }