diff --git a/llvm/lib/CodeGen/MachineRegionInfo.cpp b/llvm/lib/CodeGen/MachineRegionInfo.cpp
index 2961d45..45cdcbf 100644
--- a/llvm/lib/CodeGen/MachineRegionInfo.cpp
+++ b/llvm/lib/CodeGen/MachineRegionInfo.cpp
@@ -11,6 +11,7 @@
 #include "llvm/Analysis/RegionInfoImpl.h"
 #include "llvm/CodeGen/MachinePostDominators.h"
 #include "llvm/Config/llvm-config.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"