diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -1271,6 +1271,8 @@
   FunctionDecl *FD = FunctionDecl::Create(
       Ctx, Ctx.getTranslationUnitDecl(), SourceLocation(), SourceLocation(), II,
       FuncionTy, nullptr, SC_PrivateExtern, false, false);
+  // Avoid generating debug location info for the function.
+  FD->setImplicit();
 
   StartFunction(FD, ReturnTy, Fn, FI, Args);
 
diff --git a/clang/test/CodeGen/debug-info-oslog.c b/clang/test/CodeGen/debug-info-oslog.c
new file mode 100644
--- /dev/null
+++ b/clang/test/CodeGen/debug-info-oslog.c
@@ -0,0 +1,15 @@
+// RUN: %clang_cc1 -triple x86_64-darwin-apple -debug-info-kind=limited \
+// RUN:   %s -emit-llvm -o -  | FileCheck %s
+void test_builtin_os_log(void *buf, int i, const char *data) {
+  __builtin_os_log_format(buf, "%d", i);
+}
+
+// CHECK: define linkonce_odr {{.*}}@__os_log_helper_1_0_1_4_0(
+// CHECK-SAME:   !dbg ![[OS_LOG_HELPER:[0-9]+]]
+
+// This helper is going to be uniqued, so it should not have a line
+// number between file and type.
+
+// CHECK: distinct !DISubprogram(name: "__os_log_helper_1_0_1_4_0",
+// CHECK-SAME:                   file: !{{[0-9+]}}, type
+// CHECK-SAME:                   flags: DIFlagArtificial