diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 7996da3..6b0a5f9 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -476,6 +476,10 @@
       OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager,
       /* Default */ false);
 
+  Opts.DebugPassManager =
+      Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager,
+                   /* Default */ false);
+
   if (Arg *A = Args.getLastArg(OPT_fveclib)) {
     StringRef Name = A->getValue();
     if (Name == "Accelerate")