| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fno-tree-fre -fdisable-tree-evrp -fdump-tree-vrp1-details -fdelete-null-pointer-checks -fdisable-tree-ethread -fdisable-tree-thread1" } */ |
| |
| int |
| foo (int i, int *p) |
| { |
| int j; |
| |
| if (i > 10) |
| { |
| if (p) |
| { |
| j = *p; |
| /* This should be folded to if (1) because of the parent 'if |
| (p)'. But the dereference of p above does not need an |
| assertion. */ |
| if (p) |
| return j + 1; |
| } |
| } |
| else |
| { |
| j = *p - 3; |
| /* This should be folded to if (0), because p has just been |
| dereferenced. But we were not inserting enough ASSERT_EXPRs |
| to figure it out. */ |
| if (!p) |
| return j - 4; |
| } |
| |
| return i; |
| } |
| /* Target disabling -fdelete-null-pointer-checks should not fold checks */ |
| /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" } } */ |
| /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */ |
| /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 0" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */ |
| |
| /* { dg-final { scan-tree-dump-times "PREDICATE: p_\[0-9\]" 2 "vrp1" { target { ! keeps_null_pointer_checks } } } } */ |
| /* { dg-final { scan-tree-dump-times "PREDICATE: p_\[0-9\]" 1 "vrp1" { target { keeps_null_pointer_checks } } } } */ |
