1 /* { dg-do compile { target c++11 } } */ 2 /* { dg-options "-O3 -fdump-tree-optimized" } */ 3 4 typedef int Items[2]; 5 6 struct ItemArray 7 { 8 Items items; 9 int sum_x2() const; 10 }; 11 sum_x2()12int ItemArray::sum_x2() const 13 { 14 int total = 0; 15 for (int item : items) 16 { 17 total += item; 18 } 19 return total; 20 } 21 22 /* We should be able to compute the number of iterations to two, unroll 23 the loop and end up with a single basic-block in sum_x2. */ 24 /* { dg-final { scan-tree-dump-times "bb" 1 "optimized" } } */ 25