[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / ssa-sccvn-4.c

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

int vnum_test8(int *data) 
{ 
  int i; 
  int stop = data[3]; 
  int m = data[4]; 
  int n = m; 
  int p = 0;

  for (i=0; i<stop; i++) { 
    int k = data[2]; 
    data[5] = 0;
    if (i < 30)
      data[5] = m - n;
    p = data[5];
    k = data[1]; 
    m = m + k; 
    n = n + k; 
  } 
  return p;
} 
/* We should eliminate m - n, n + k, set data[5] = 0, eliminate the
   address arithmetic for data[5], and set p = 0.
/* { dg-final { scan-tree-dump-times "Eliminated: 5" 1 "fre"} } */
/* { dg-final { cleanup-tree-dump "fre" } } */
Commit	Line	Data
89fb70a3 DB	1	/* { dg-do compile } */
	2	/* { dg-options "-O2 -fdump-tree-fre-stats" } */
	3
	4	int vnum_test8(int *data)
	5	{
	6	int i;
	7	int stop = data[3];
	8	int m = data[4];
	9	int n = m;
	10	int p = 0;
	11
	12	for (i=0; i<stop; i++) {
	13	int k = data[2];
	14	data[5] = 0;
	15	if (i < 30)
	16	data[5] = m - n;
	17	p = data[5];
	18	k = data[1];
	19	m = m + k;
	20	n = n + k;
	21	}
	22	return p;
	23	}
	24	/* We should eliminate m - n, n + k, set data[5] = 0, eliminate the
	25	address arithmetic for data[5], and set p = 0.
70f34814	26	/* { dg-final { scan-tree-dump-times "Eliminated: 5" 1 "fre"} } */
89fb70a3	27	/* { dg-final { cleanup-tree-dump "fre" } } */