| /* { dg-do compile } */ |
| /* { dg-options "-O2 -ftree-loop-linear -fdump-tree-ltrans-all" } */ |
| /* LLVM LOCAL test not applicable */ |
| /* { dg-require-fdump "" } */ |
| /* { dg-require-effective-target size32plus } */ |
| |
| int foo() |
| { |
| int x[2][2], y[2]; |
| int i, n, s; |
| |
| /* This is a reduction: there is a scalar dependence that cannot be |
| removed by rewriting IVs. This code cannot and should not be |
| transformed into a perfect loop. */ |
| for (n = 0; n < 2; n++) |
| { |
| s = 0; |
| for (i = 0; i < 2; i++) |
| s += x[n][i]*y[i]; |
| s += 1; |
| } |
| |
| return s; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "converted loop nest to perfect loop nest" 0 "ltrans"} } */ |
| /* { dg-final { cleanup-tree-dump "ltrans" } } */ |