1/* { dg-do compile } */
2/* { dg-options "-O2 -fdump-tree-optimized" } */
3
4int f (int a0,int a1,int a2,int a3,int a4)
5{
6int b0, b1, b2, b3, b4,e;
7  /* this can be optimized to four additions... */
8  b4 = a4 + a3 + a2 + a1 + a0;
9  b3 = a3 + a2 + a1 + a0;
10  b2 = a2 + a1 + a0;
11  b1 = a1 + a0;
12  /* This is actually 0 */
13  e = b4 - b3 + b2 - b1 - a4 - a2;
14  return e;
15}
16
17/* We can't reassociate the expressions due to undefined signed overflow.  */
18
19/* { dg-final { scan-tree-dump-times "return 0" 1 "optimized" { xfail *-*-* } } } */
20/* { dg-final { cleanup-tree-dump "optimized" } } */
21