Index: include/llvm/CodeGen/Passes.h
===================================================================
--- include/llvm/CodeGen/Passes.h
+++ include/llvm/CodeGen/Passes.h
@@ -81,6 +81,9 @@
 /// MachineDominanaceFrontier - This pass is a machine dominators analysis pass.
   extern char &MachineDominanceFrontierID;
 
+  /// MachineRegionInfo - This pass computes SESE regions for machine functions.
+  extern char &MachineRegionInfoPassID;
+
   /// EdgeBundles analysis - Bundle machine CFG edges.
   extern char &EdgeBundlesID;
 
Index: lib/CodeGen/MachineRegionInfo.cpp
===================================================================
--- lib/CodeGen/MachineRegionInfo.cpp
+++ lib/CodeGen/MachineRegionInfo.cpp
@@ -123,6 +123,7 @@
 #endif
 
 char MachineRegionInfoPass::ID = 0;
+char &MachineRegionInfoPassID = MachineRegionInfoPass::ID;
 
 INITIALIZE_PASS_BEGIN(MachineRegionInfoPass, DEBUG_TYPE,
                       "Detect single entry single exit regions", true, true)