diff --git a/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp b/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
--- a/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
+++ b/llvm/lib/Target/AMDGPU/GCNSchedStrategy.cpp
@@ -461,7 +461,9 @@
     I = Rgn.first;
     auto *NonDbgMI = &*skipDebugInstructionsForward(Rgn.first, Rgn.second);
     auto LRS = BBLiveInMap.lookup(NonDbgMI);
+#ifdef EXPENSIVE_CHECKS
     assert(isEqual(getLiveRegsBefore(*NonDbgMI, *LIS), LRS));
+#endif
     RPTracker.reset(*I, &LRS);
   }