1 files changed, 48 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/atomic-store-5.c b/gcc/testsuite/gcc.dg/atomic-store-5.c
new file mode 100644
index 00000000000..f976a052c7c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/atomic-store-5.c
@@ -0,0 +1,48 @@
+/* Test __atomic routines for existence and proper execution on 16 byte 
+   values with each valid memory model.  */
+/* { dg-do run } */
+/* { dg-require-effective-target sync_int_128 } */
+/* { dg-options "-mcx16" { target { x86_64-*-* } } } */
+
+/* Test the execution of the __atomic_store_n builtin for a 16 byte value.  */
+
+extern void abort(void);
+
+__int128_t v, count;
+
+main ()
+{
+  v = 0;
+  count = 0;
+
+  __atomic_store_n (&v, count + 1, __ATOMIC_RELAXED);
+  if (v != ++count)
+    abort ();
+
+  __atomic_store_n (&v, count + 1, __ATOMIC_RELEASE);
+  if (v != ++count)
+    abort ();
+
+  __atomic_store_n (&v, count + 1, __ATOMIC_SEQ_CST);
+  if (v != ++count)
+    abort ();
+
+  /* Now test the generic variant.  */
+  count++;
+
+  __atomic_store (&v, &count, __ATOMIC_RELAXED);
+  if (v != count++)
+    abort ();
+
+  __atomic_store (&v, &count, __ATOMIC_RELEASE);
+  if (v != count++)
+    abort ();
+
+  __atomic_store (&v, &count, __ATOMIC_SEQ_CST);
+  if (v != count)
+    abort ();
+
+
+  return 0;
+}
+