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/* { 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\[123\]\[: \t\n\]" } } */