1 /* { dg-do compile } */
2 /* { dg-options "-O2 -fdump-tree-optimized" } */
3
f(unsigned int a0,unsigned int a1,unsigned int a2,unsigned int a3,unsigned int a4)4 unsigned int f (unsigned int a0, unsigned int a1, unsigned int a2,
5 unsigned int a3, unsigned int a4)
6 {
7 unsigned int b0, b1, b2, b3, b4, e;
8 /* this can be optimized to four additions... */
9 b4 = a4 + a3 + a2 + a1 + a0;
10 b3 = a3 + a2 + a1 + a0;
11 b2 = a2 + a1 + a0;
12 b1 = a1 + a0;
13 /* This is actually 0 */
14 e = b4 - b3 + b2 - b1 - a4 - a2;
15 return e;
16 }
17
18 /* { dg-final { scan-tree-dump-times "return 0" 1 "optimized" } } */
19