diff --git a/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp b/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp
index 9850e02..e5d8c33 100644
--- a/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp
+++ b/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp
@@ -28,7 +28,9 @@
   return ScaledNumber<uint64_t>(getMass() + 1, -64);
 }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 LLVM_DUMP_METHOD void BlockMass::dump() const { print(dbgs()); }
+#endif
 
 static char getHexDigit(int N) {
   assert(N < 16);