diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
--- a/llvm/lib/CodeGen/MachineScheduler.cpp
+++ b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -101,6 +101,7 @@
 #else
 const bool ViewMISchedDAGs = false;
 const bool PrintDAGs = false;
+const bool MISchedDumpReservedCycles = false;
 #endif // NDEBUG
 
 } // end namespace llvm