diff --git a/linux-x64/clang/include/llvm-c/Initialization.h b/linux-x64/clang/include/llvm-c/Initialization.h
index 90c8396..e45eafb 100644
--- a/linux-x64/clang/include/llvm-c/Initialization.h
+++ b/linux-x64/clang/include/llvm-c/Initialization.h
@@ -37,6 +37,7 @@
 void LLVMInitializeObjCARCOpts(LLVMPassRegistryRef R);
 void LLVMInitializeVectorization(LLVMPassRegistryRef R);
 void LLVMInitializeInstCombine(LLVMPassRegistryRef R);
+void LLVMInitializeAggressiveInstCombiner(LLVMPassRegistryRef R);
 void LLVMInitializeIPO(LLVMPassRegistryRef R);
 void LLVMInitializeInstrumentation(LLVMPassRegistryRef R);
 void LLVMInitializeAnalysis(LLVMPassRegistryRef R);