/* { 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; | |
} | |
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" } } */ | |
/* { dg-final { cleanup-tree-dump "vrp1" } } */ |