+/* { dg-do compile } */
+/* { dg-options -O2 } */
+
+extern void do_something_usefull();
+/* Check that we finish compiling even if instructed to
+ flatten a cyclic callgraph. Verify we correctly
+ flatten with another function marked flatten in the
+ callgraph. */
+
+void __attribute__((flatten)) direct(void)
+{
+ direct();
+}
+
+
+void __attribute__((flatten)) indirect(void);
+static void indirect1(void)
+{
+ indirect();
+}
+void __attribute__((flatten)) indirect(void)
+{
+ indirect1();
+}
+
+
+void __attribute__((flatten)) doubleindirect(void);
+static void doubleindirect2(void)
+{
+ doubleindirect();
+ do_something_usefull ();
+}
+static void doubleindirect1(void)
+{
+ doubleindirect2();
+}
+void __attribute__((flatten)) doubleindirect(void)
+{
+ doubleindirect1();
+}
+
+
+static void subcycle1(void);
+static void subcycle2(void)
+{
+ subcycle1();
+ do_something_usefull ();
+}
+static void subcycle1(void)
+{
+ subcycle2();
+}
+void __attribute__((flatten)) subcycle(void)
+{
+ subcycle1();
+}
+
+
+static void doublesubcycle1(void);
+static void doublesubcycle2(void);
+static void doublesubcycle3(void)
+{
+ doublesubcycle1();
+ do_something_usefull ();
+}
+static void doublesubcycle2(void)
+{
+ doublesubcycle3();
+}
+static void doublesubcycle1(void)
+{
+ doublesubcycle2();
+}
+void __attribute__((flatten)) doublesubcycle(void)
+{
+ doublesubcycle1();
+}
+
+/* { dg-final { scan-assembler "cycle\[123\]\[: \t\n\]" } } */