[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / vrp01.c

/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-vrp1" } */

int
foo (int *p, int i)
{
  int x;

  if (i > 10)
    {
      if (p)
	{
	  x = *p;
	  p = 0;
	}
    }
  else
    p = 0;

  /* This should be folded to if (1), but only if we insert an
     assertion on the ELSE edge from the inner 'if (p)'.  */
  if (p == 0)
    return x + 1;

  return i;
}

/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" } } */
Commit	Line	Data
227858d1	1	/* { dg-do compile } */
2090d6a0	2	/* { dg-options "-O2 -fdump-tree-vrp1" } */
227858d1	3
830976a1	4	int
227858d1 DN	5	foo (int *p, int i)
	6	{
	7	int x;
	8
	9	if (i > 10)
	10	{
	11	if (p)
	12	{
	13	x = *p;
	14	p = 0;
	15	}
	16	}
	17	else
	18	p = 0;
	19
	20	/* This should be folded to if (1), but only if we insert an
	21	assertion on the ELSE edge from the inner 'if (p)'. */
	22	if (p == 0)
	23	return x + 1;
	24
	25	return i;
	26	}
	27
2090d6a0	28	/* { dg-final { scan-tree-dump-times "Folding predicate p_.to 1" 1 "vrp1" } } /