diff --git a/llvm/include/llvm/CodeGen/RuntimeLibcalls.h b/llvm/include/llvm/CodeGen/RuntimeLibcalls.h
index 016bef1702c4c9..28567a1ce43753 100644
--- a/llvm/include/llvm/CodeGen/RuntimeLibcalls.h
+++ b/llvm/include/llvm/CodeGen/RuntimeLibcalls.h
@@ -29,7 +29,7 @@ namespace RTLIB {
   ///
   enum Libcall {
 #define HANDLE_LIBCALL(code, name) code,
-    #include "RuntimeLibcalls.def"
+    #include "llvm/IR/RuntimeLibcalls.def"
 #undef HANDLE_LIBCALL
   };
 
diff --git a/llvm/include/llvm/CodeGen/RuntimeLibcalls.def b/llvm/include/llvm/IR/RuntimeLibcalls.def
similarity index 100%
rename from llvm/include/llvm/CodeGen/RuntimeLibcalls.def
rename to llvm/include/llvm/IR/RuntimeLibcalls.def
diff --git a/llvm/include/llvm/module.modulemap b/llvm/include/llvm/module.modulemap
index 6fc728295f6e88..649cdf3b0a89c8 100644
--- a/llvm/include/llvm/module.modulemap
+++ b/llvm/include/llvm/module.modulemap
@@ -26,7 +26,6 @@ module LLVM_Backend {
     // These are intended for (repeated) textual inclusion.
     textual header "CodeGen/CommandFlags.inc"
     textual header "CodeGen/DIEValue.def"
-    textual header "CodeGen/RuntimeLibcalls.def"
   }
 
   module Target {
@@ -222,6 +221,7 @@ module LLVM_IR {
   textual header "IR/Instruction.def"
   textual header "IR/Metadata.def"
   textual header "IR/Value.def"
+  textual header "IR/RuntimeLibcalls.def"
 }
 
 module LLVM_IRReader { requires cplusplus umbrella "IRReader" module * { export * } }
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index 96e03388d5c14b..43f4bad595e306 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -118,7 +118,7 @@ static cl::opt<int> MinPercentageForPredictableBranch(
 void TargetLoweringBase::InitLibcalls(const Triple &TT) {
 #define HANDLE_LIBCALL(code, name) \
   setLibcallName(RTLIB::code, name);
-#include "llvm/CodeGen/RuntimeLibcalls.def"
+#include "llvm/IR/RuntimeLibcalls.def"
 #undef HANDLE_LIBCALL
   // Initialize calling conventions to their default.
   for (int LC = 0; LC < RTLIB::UNKNOWN_LIBCALL; ++LC)
diff --git a/llvm/lib/Object/IRSymtab.cpp b/llvm/lib/Object/IRSymtab.cpp
index 51081d8b5e642e..344d565349c093 100644
--- a/llvm/lib/Object/IRSymtab.cpp
+++ b/llvm/lib/Object/IRSymtab.cpp
@@ -42,6 +42,12 @@
 using namespace llvm;
 using namespace irsymtab;
 
+static const char *LibcallRoutineNames[] = {
+#define HANDLE_LIBCALL(code, name) name,
+#include "llvm/IR/RuntimeLibcalls.def"
+#undef HANDLE_LIBCALL
+};
+
 namespace {
 
 const char *getExpectedProducerName() {
@@ -226,7 +232,13 @@ Error Builder::addSymbol(const ModuleSymbolTable &Msymtab,
 
   setStr(Sym.IRName, GV->getName());
 
-  if (Used.count(GV))
+  bool IsBuiltinFunc = false;
+
+  for (const char *LibcallName : LibcallRoutineNames)
+    if (GV->getName() == LibcallName)
+      IsBuiltinFunc = true;
+
+  if (Used.count(GV) || IsBuiltinFunc)
     Sym.Flags |= 1 << storage::Symbol::FB_used;
   if (GV->isThreadLocal())
     Sym.Flags |= 1 << storage::Symbol::FB_tls;
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
index e5180ad7f2e933..fe8a5e4c06f1aa 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
@@ -470,7 +470,7 @@ struct StaticLibcallNameMap {
   StaticLibcallNameMap() {
     static const std::pair<const char *, RTLIB::Libcall> NameLibcalls[] = {
 #define HANDLE_LIBCALL(code, name) {(const char *)name, RTLIB::code},
-#include "llvm/CodeGen/RuntimeLibcalls.def"
+#include "llvm/IR/RuntimeLibcalls.def"
 #undef HANDLE_LIBCALL
     };
     for (const auto &NameLibcall : NameLibcalls) {