| /* x2 and x3 will be strength-reduced based on the same statement |
| but with different variables as the stride. Note that they will |
| be strength-reduced by introducing an initializer 4*s which is |
| cheaper than 5*s; similar for 4*c and 5*c. */ |
| |
| /* { dg-do compile } */ |
| /* { dg-options "-O3 -fdump-tree-optimized" } */ |
| |
| int |
| f (int s, int c) |
| { |
| int a2, a3, x1, x2, x3, x; |
| |
| x1 = c + s; |
| a2 = 5 * s; |
| x2 = c + a2; |
| a3 = 5 * c; |
| x3 = s + a3; |
| x = x1 + x2 + x3; |
| return x; |
| } |
| |
| /* { dg-final { scan-tree-dump-times " \\* 4" 2 "optimized" } } */ |
| /* { dg-final { scan-tree-dump-times " \\* 5" 0 "optimized" } } */ |
