Index: include/llvm/IR/Module.h
===================================================================
--- include/llvm/IR/Module.h
+++ include/llvm/IR/Module.h
@@ -734,12 +734,6 @@
   /// @name Utility functions for querying and setting PGO summary
   /// @{
 
-  /// \brief Set maximum function count in PGO mode
-  void setMaximumFunctionCount(uint64_t);
-
-  /// \brief Returns maximum function count in PGO mode
-  Optional<uint64_t> getMaximumFunctionCount();
-
   /// \brief Attach profile summary metadata to this module.
   void setProfileSummary(Metadata *M);
 
Index: lib/IR/Module.cpp
===================================================================
--- lib/IR/Module.cpp
+++ lib/IR/Module.cpp
@@ -497,18 +497,6 @@
   addModuleFlag(ModFlagBehavior::Error, "PIC Level", PL);
 }
 
-void Module::setMaximumFunctionCount(uint64_t Count) {
-  addModuleFlag(ModFlagBehavior::Error, "MaxFunctionCount", Count);
-}
-
-Optional<uint64_t> Module::getMaximumFunctionCount() {
-  auto *Val =
-      cast_or_null<ConstantAsMetadata>(getModuleFlag("MaxFunctionCount"));
-  if (!Val)
-    return None;
-  return cast<ConstantInt>(Val->getValue())->getZExtValue();
-}
-
 void Module::setProfileSummary(Metadata *M) {
   addModuleFlag(ModFlagBehavior::Error, "ProfileSummary", M);
 }