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