1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/nvptx/softstack.c b/gcc/testsuite/gcc.target/nvptx/softstack.c
new file mode 100644
index 00000000000..73e60f282a7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/softstack.c
@@ -0,0 +1,23 @@
+/* { dg-options "-O2 -msoft-stack" } */
+/* { dg-do run } */
+
+static __attribute__((noinline,noclone)) int f(int *p)
+{
+  return __sync_lock_test_and_set(p, 1);
+}
+
+static __attribute__((noinline,noclone)) int g(int n)
+{
+  /* Check that variable-length stack allocation works.  */
+  int v[n];
+  v[0] = 0;
+  /* Check that atomic operations can be applied to auto data.  */
+  return f(v) == 0 && v[0] == 1;
+}
+
+int main()
+{
+  if (!g(1))
+    __builtin_abort();
+  return 0;
+}