File: dbra-1.c

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gcc-arm-none-eabi 15%3A14.2.rel1-1
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/* { dg-additional-options "-std=gnu89" } */

f1 (a)
     long a;
{
  int i;
  for (i = 0; i < 10; i++)
    {
      if (--a == -1)
	return i;
    }
  return -1;
}

f2 (a)
     long a;
{
  int i;
  for (i = 0; i < 10; i++)
    {
      if (--a != -1)
	return i;
    }
  return -1;
}

f3 (a)
     long a;
{
  int i;
  for (i = 0; i < 10; i++)
    {
      if (--a == 0)
	return i;
    }
  return -1;
}

f4 (a)
     long a;
{
  int i;
  for (i = 0; i < 10; i++)
    {
      if (--a != 0)
	return i;
    }
  return -1;
}

f5 (a)
     long a;
{
  int i;
  for (i = 0; i < 10; i++)
    {
      if (++a == 0)
	return i;
    }
  return -1;
}

f6 (a)
     long a;
{
  int i;
  for (i = 0; i < 10; i++)
    {
      if (++a != 0)
	return i;
    }
  return -1;
}


main()
{
  if (f1 (5L) != 5)
    abort ();
  if (f2 (1L) != 0)
    abort ();
  if (f2 (0L) != 1)
    abort ();
  if (f3 (5L) != 4)
    abort ();
  if (f4 (1L) != 1)
    abort ();
  if (f4 (0L) != 0)
    abort ();
  if (f5 (-5L) != 4)
    abort ();
  if (f6 (-1L) != 1)
    abort ();
  if (f6 (0L) != 0)
    abort ();
  exit (0);
}