diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 7127bbb0450e9..01bbbd7371aad 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -2094,14 +2094,6 @@ void CodeGenModule::getDefaultFunctionAttributes(StringRef Name,
     addMergableDefaultFunctionAttributes(CodeGenOpts, FuncAttrs);
 }
 
-void CodeGenModule::addDefaultFunctionDefinitionAttributes(llvm::Function &F) {
-  llvm::AttrBuilder FuncAttrs(F.getContext());
-  getDefaultFunctionAttributes(F.getName(), F.hasOptNone(),
-                               /* AttrOnCallSite = */ false, FuncAttrs);
-  // TODO: call GetCPUAndFeaturesAttributes?
-  F.addFnAttrs(FuncAttrs);
-}
-
 /// Apply default attributes to \p F, accounting for merge semantics of
 /// attributes that should not overwrite existing attributes.
 void CodeGenModule::mergeDefaultFunctionDefinitionAttributes(
diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index d4032aa6feb95..c8fc068bde7bb 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -1276,7 +1276,6 @@ class CodeGenModule : public CodeGenTypeCache {
   /// on the function more conservative.  But it's unsafe to call this on a
   /// function which relies on particular fast-math attributes for correctness.
   /// It's up to you to ensure that this is safe.
-  void addDefaultFunctionDefinitionAttributes(llvm::Function &F);
   void mergeDefaultFunctionDefinitionAttributes(llvm::Function &F,
                                                 bool WillInternalize);