| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fdump-tree-vrp1" } */ |
| /* LLVM LOCAL test not applicable */ |
| /* { dg-require-fdump "" } */ |
| |
| struct A |
| { |
| int a; |
| int b; |
| }; |
| |
| foo (struct A *p, struct A *q) |
| { |
| int *r = 0; |
| |
| if (p) |
| { |
| if (p == q) |
| { |
| /* This should be folded to 'if (1)' because q is [p, p] |
| and p is ~[0, 0]. */ |
| if (q) |
| r = &q->a; |
| |
| /* This should be folded to 'if (1)' because q should be |
| ~[0, 0] and thus &q->a should be ~[0, 0]. */ |
| if (r) |
| return 5; |
| } |
| } |
| |
| return q->a; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "Folding predicate q_.*to 1" 1 "vrp1" } } */ |
| /* { dg-final { scan-tree-dump-times "Folding predicate r_.*to 1" 1 "vrp1" } } */ |
| /* { dg-final { cleanup-tree-dump "vrp1" } } */ |
