1/* { dg-do compile } */ 2/* { dg-options "-w -fdump-tree-gimple" } */ 3 4/* Things that should be folded. */ 5 6struct { long base; int tail; void * volatile ptr; } *s; 7int foo1a (void) { return (s == &s->base); } 8int foo1b (void) { return (&s->base == s); } 9int foo2 (void) { return ((void *)s == (void *) &s->base); } 10int foo4 (void) { return s->base == s->base; } 11int foo5 (void) { return &s->ptr == &s->ptr; } 12int foo6 (void) { return &s->ptr != &s->ptr; } 13int foo7 (void) { return &s->base != &s->ptr; } 14 15struct { union { int i; short s } u; } x; 16int foo8 (void) { return &x.u.i == &x.u.s; } 17 18/* { dg-final { scan-tree-dump-times "= 0" 1 "gimple" } } */ 19/* { dg-final { scan-tree-dump-times "= 1" 7 "gimple" } } */ 20/* { dg-final { cleanup-tree-dump "gimple" } } */ 21