diff --git a/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp b/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp
index e39811e33e8..5c05fbd6294 100644
--- a/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp
+++ b/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp
@@ -2905,6 +2905,7 @@ void InstrRefBasedLDV::vlocDataflow(
   BlocksToExplore.clear();
 }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void InstrRefBasedLDV::dump_mloc_transfer(
     const MLocTransferMap &mloc_transfer) const {
   for (auto &P : mloc_transfer) {
@@ -2913,6 +2914,7 @@ void InstrRefBasedLDV::dump_mloc_transfer(
     dbgs() << "Loc " << foo << " --> " << bar << "\n";
   }
 }
+#endif
 
 void InstrRefBasedLDV::emitLocations(
     MachineFunction &MF, LiveInsT SavedLiveIns, ValueIDNum **MInLocs,