diff --git a/clang/include/clang/Basic/Builtins.def b/clang/include/clang/Basic/Builtins.def
index 4dcbaf8a7beaa..de9b9db3260ee 100644
--- a/clang/include/clang/Basic/Builtins.def
+++ b/clang/include/clang/Basic/Builtins.def
@@ -974,6 +974,7 @@ BUILTIN(__sync_fetch_and_umin, "UiUiD*Ui", "n")
 BUILTIN(__sync_fetch_and_umax, "UiUiD*Ui", "n")
 
 // Random libc builtins.
+BUILTIN(__builtin_exit, "vi", "Fnr")
 BUILTIN(__builtin_abort, "v", "Fnr")
 BUILTIN(__builtin_index, "c*cC*i", "Fn")
 BUILTIN(__builtin_rindex, "c*cC*i", "Fn")
diff --git a/clang/test/CodeGen/builtin-exit-test.c b/clang/test/CodeGen/builtin-exit-test.c
new file mode 100644
index 0000000000000..36b5a5de96c41
--- /dev/null
+++ b/clang/test/CodeGen/builtin-exit-test.c
@@ -0,0 +1,9 @@
+//RUN: %clang_cc1 -emit-llvm -Wno-strict-prototypes -triple aarch64-target-linux-gnu %s -o - | FileCheck %s
+
+//CHECK: define dso_local void @test() #0 {
+//CHECK: call void @exit(i32 noundef 1)
+//CHECK: unreachable
+
+void test(void){
+	__builtin_exit(1);
+}