| /* PR tree-optimization/21294 |
| VRP did not notice that an address of the form &p->i is nonnull |
| when p is known to be nonnull. In this testcase, noticing that |
| allows us to eliminate the second "if" statement. */ |
| |
| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp-details" } */ |
| |
| struct f { |
| int i; |
| }; |
| |
| int |
| foo (struct f *p) |
| { |
| if (p != 0) |
| if (&p->i != 0) |
| return 123; |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp"} } */ |
| /* { dg-final { cleanup-tree-dump "vrp" } } */ |
