26 lines
740 B
C
26 lines
740 B
C
/* { dg-do compile } */
|
|
/* { dg-options "-O2 -fdump-tree-vrp1" } */
|
|
|
|
struct A
|
|
{
|
|
int a;
|
|
int b;
|
|
};
|
|
|
|
foo (struct A *p, struct A *q)
|
|
{
|
|
int x = p->a;
|
|
if (p == q)
|
|
return q->a;
|
|
|
|
/* We should fold this to 'if (1)' but the assertion for 'p == q'
|
|
was overwriting the assertion 'p != 0' from the first dereference
|
|
of 'p'. */
|
|
if (p)
|
|
return x + p->b;
|
|
}
|
|
/* Target with fno-delete-null-pointer-checks should not fold check */
|
|
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
|
|
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
|
|
/* { dg-final { cleanup-tree-dump "vrp1" } } */
|