diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
index 276fab7..ad9dc2d 100644
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -485,7 +485,8 @@
                                           "expand-reductions",
                                           "indirectbr-expand",
                                           "generic-to-nvvm",
-                                          "expandmemcmp"};
+                                          "expandmemcmp",
+                                          "loop-reduce"};
   for (const auto &P : PassNamePrefix)
     if (Pass.startswith(P))
       return true;