blob: 3f4adf434833f477e299d96194b7e788a221f8ed (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-ccp1" } */
struct A {
struct B {
int i;
} b;
} a;
int foo (void)
{
struct B *p = &a.b;
struct A *q = (struct A *) p;
return q->b.i;
}
int bar (void)
{
struct A *p = &a;
struct B *q = (struct B *) p;
return q->i;
}
/* The first access is through struct A, so a.b.i is fine,
the second access needs to preserve the original access type struct B. */
/* { dg-final { scan-tree-dump-times "a.b.i" 1 "ccp1" } } */
/* { dg-final { scan-tree-dump-times "MEM\\\[\\\(struct B \\\*\\\)&a\\\].i" 1 "ccp1" } } */
/* { dg-final { cleanup-tree-dump "ccp1" } } */
|
