Index: lib/Target/AMDGPU/AMDGPU.h
===================================================================
--- lib/Target/AMDGPU/AMDGPU.h
+++ lib/Target/AMDGPU/AMDGPU.h
@@ -86,6 +86,9 @@
 void initializeAMDGPUAnnotateUniformValuesPass(PassRegistry&);
 extern char &AMDGPUAnnotateUniformValuesPassID;
 
+void initializeSIAnnotateControlFlowPass(PassRegistry&);
+extern char &SIAnnotateControlFlowPassID;
+
 extern Target TheAMDGPUTarget;
 extern Target TheGCNTarget;
 
Index: lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
+++ lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
@@ -52,6 +52,7 @@
   initializeSILoadStoreOptimizerPass(*PR);
   initializeAMDGPUAnnotateKernelFeaturesPass(*PR);
   initializeAMDGPUAnnotateUniformValuesPass(*PR);
+  initializeSIAnnotateControlFlowPass(*PR);
 }
 
 static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {