| /* A test for induction variable merging. */ |
| |
| /* { dg-do compile } */ |
| /* { dg-options "-O1 -fdump-tree-optimized" } */ |
| |
| void foo(long); |
| |
| void xxx(void) |
| { |
| long iter, jter; |
| |
| for (iter = 0, jter = 2; iter < 100; iter++, jter++) |
| { |
| foo (iter); |
| foo (jter); |
| } |
| } |
| |
| /* Only iter variable should remain. */ |
| |
| /* { dg-final { scan-tree-dump-times "int jiter" 0 "optimized" } } */ |
| |
| /* And jter shouldn't be an induction variable anymore (no PHI node). */ |
| /* { dg-final { scan-tree-dump-times "jter_\[0-9\]* = PHI" 0 "optimized" } } */ |
| |
| /* And the use of jter should be replaced by iter + 2 */ |
| |
| /* { dg-final { scan-tree-dump-times " \\+ 2" 1 "optimized" } } */ |
| |
