Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 68 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/atomic-exchange-2.c b/gcc-4.9/gcc/testsuite/gcc.dg/atomic-exchange-2.c
new file mode 100644
index 000000000..0de2e6820
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/atomic-exchange-2.c
@@ -0,0 +1,68 @@
+/* Test __atomic routines for existence and proper execution on 2 byte 
+   values with each valid memory model.  */
+/* { dg-do run } */
+/* { dg-require-effective-target sync_char_short } */
+
+/* Test the execution of the __atomic_X builtin for a short.  */
+
+extern void abort(void);
+
+short v, count, ret;
+
+int
+main ()
+{
+  v = 0;
+  count = 0;
+
+  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count)
+    abort ();
+  count++;
+
+  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count)
+    abort ();
+  count++;
+
+  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count)
+    abort ();
+  count++;
+
+  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count)
+    abort ();
+  count++;
+
+  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count)
+    abort ();
+  count++;
+
+  /* Now test the generic version.  */
+
+  count++;
+
+  __atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
+  if (ret != count - 1 || v != count)
+    abort ();
+  count++;
+
+  __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
+  if (ret != count - 1 || v != count)
+    abort ();
+  count++;
+
+  __atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
+  if (ret != count - 1 || v != count)
+    abort ();
+  count++;
+
+  __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
+  if (ret != count - 1 || v != count)
+    abort ();
+  count++;
+
+  __atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
+  if (ret != count - 1 || v != count)
+    abort ();
+  count++;
+
+  return 0;
+}