Check in patch/merge from cxx-mem-model Branch

From-SVN: r181031

1 files changed, 66 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/atomic-load-1.c b/gcc/testsuite/gcc.dg/atomic-load-1.c
new file mode 100644
index 0000000..928f9b0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/atomic-load-1.c
@@ -0,0 +1,66 @@
+/* Test __atomic routines for existence and proper execution on 1 byte 
+   values with each valid memory model.  */
+/* { dg-do run } */
+/* { dg-require-effective-target sync_char_short } */
+
+
+/* Test the execution of the __atomic_load_n builtin for a char.  */
+
+extern void abort(void);
+
+char v, count;
+
+main ()
+{
+  v = 0;
+  count = 0;
+
+  if (__atomic_load_n (&v, __ATOMIC_RELAXED) != count++) 
+    abort(); 
+  else 
+    v++;
+
+  if (__atomic_load_n (&v, __ATOMIC_ACQUIRE) != count++) 
+    abort(); 
+  else 
+    v++;
+
+  if (__atomic_load_n (&v, __ATOMIC_CONSUME) != count++) 
+    abort(); 
+  else 
+    v++;
+
+  if (__atomic_load_n (&v, __ATOMIC_SEQ_CST) != count++) 
+    abort(); 
+  else 
+    v++;
+
+  /* Now test the generic variants.  */
+
+  __atomic_load (&v, &count, __ATOMIC_RELAXED);
+  if (count != v)
+    abort(); 
+  else 
+    v++;
+
+  __atomic_load (&v, &count, __ATOMIC_ACQUIRE);
+  if (count != v)
+    abort(); 
+  else 
+    v++;
+
+  __atomic_load (&v, &count, __ATOMIC_CONSUME);
+  if (count != v)
+    abort(); 
+  else 
+    v++;
+
+  __atomic_load (&v, &count, __ATOMIC_SEQ_CST);
+  if (count != v)
+    abort(); 
+  else 
+    v++;
+
+  return 0;
+}
+