1 files changed, 19 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c b/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c
new file mode 100644
index 0000000..ad292d2
--- /dev/null
+++ b/contrib/compiler-rt/lib/builtins/atomic_signal_fence.c
@@ -0,0 +1,19 @@
+/*===-- atomic_signal_fence.c -----------------------------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ *===------------------------------------------------------------------------===
+ *
+ * This file implements atomic_signal_fence from C11's stdatomic.h.
+ *
+ *===------------------------------------------------------------------------===
+ */
+
+#include <stdatomic.h>
+#undef atomic_signal_fence
+void atomic_signal_fence(memory_order order) {
+  __c11_atomic_signal_fence(order);
+}