| /* A test for strength reduction of ivs with nonconstant step. */ |
| |
| /* { dg-do compile } */ |
| /* { dg-options "-O1 -fdump-tree-optimized" } */ |
| |
| int bar (void); |
| |
| int a[100]; |
| |
| void xxx (void) |
| { |
| int iter, step = bar (); |
| |
| for (iter = 0; iter < 10; iter++) |
| a[iter * step] = bar (); |
| } |
| |
| /* The array access should be strength reduced. But to determine the value of |
| the step, we need to calculate step * sizeof (int), thus we need to be |
| a bit careful about which multiplications we disallow. */ |
| |
| /* { dg-final { scan-tree-dump-times "step \\* \[^0-9\]" 0 "optimized" } } */ |
| /* { dg-final { scan-tree-dump-times "\[^0-9\] \\* step" 0 "optimized" } } */ |
| |
