[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / loop-invariant.c

/* { dg-do compile { target x86_64-*-* } } */
/* { dg-options "-O2 -fdump-rtl-loop2_invariant" } */
/* NOTE: The target list above could be extended to other targets that have
         conditional moves, but don't have zero registers.  */

enum test_type
{
  TYPE0,
  TYPE1
};

struct type_node
{
  enum test_type type;
};

struct test_ref
{
  struct type_node *referring;
};

struct test_node
{
  struct test_node *next;
};

int iterate (struct test_node *, unsigned, struct test_ref **);

int
loop_invar (struct test_node *node)
{
  struct test_ref *ref;

  for (unsigned i = 0; iterate (node, i, &ref); i++)
    if (loop_invar ((ref->referring && ref->referring->type == TYPE0)
                    ? ((struct test_node *) (ref->referring)) : 0))
      return 1;

  return 0;
}

/* { dg-final { scan-rtl-dump "Decided to move invariant" "loop2_invariant" } } */
Commit	Line	Data
315a349c DS	1	/* { dg-do compile { target x86_64-- } } */
	2	/* { dg-options "-O2 -fdump-rtl-loop2_invariant" } */
	3	/* NOTE: The target list above could be extended to other targets that have
	4	conditional moves, but don't have zero registers. */
	5
	6	enum test_type
	7	{
	8	TYPE0,
	9	TYPE1
	10	};
	11
	12	struct type_node
	13	{
	14	enum test_type type;
	15	};
	16
	17	struct test_ref
	18	{
	19	struct type_node *referring;
	20	};
	21
	22	struct test_node
	23	{
	24	struct test_node *next;
	25	};
	26
	27	int iterate (struct test_node , unsigned, struct test_ref *);
	28
	29	int
	30	loop_invar (struct test_node *node)
	31	{
	32	struct test_ref *ref;
	33
	34	for (unsigned i = 0; iterate (node, i, &ref); i++)
	35	if (loop_invar ((ref->referring && ref->referring->type == TYPE0)
	36	? ((struct test_node *) (ref->referring)) : 0))
	37	return 1;
	38
	39	return 0;
	40	}
	41
	42	/* { dg-final { scan-rtl-dump "Decided to move invariant" "loop2_invariant" } } */