| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fno-tree-fre -fdump-tree-vrp-details" } */ |
| |
| /* Compile with -fno-tree-fre -O2 to prevent CSEing *p. */ |
| foo (int a, int *p) |
| { |
| int x = *p + 2; |
| int y = *p - 1; |
| int z = *p + 9; |
| |
| /* This should be folded to if (1), but only one ASSERT_EXPR should |
| be inserted. */ |
| if (p) |
| a = x + y + z; |
| else |
| a = x - y; |
| |
| return a; |
| } |
| /* Target with fno-delete-null-pointer-checks should not fold checks */ |
| /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp" { target { ! keeps_null_pointer_checks } } } } */ |
| /* { dg-final { scan-tree-dump-times "PREDICATE: p_.* ne_expr 0" 1 "vrp" { target { ! keeps_null_pointer_checks } } } } */ |
| /* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp" { target { keeps_null_pointer_checks } } } } */ |
| /* { dg-final { cleanup-tree-dump "vrp" } } */ |
