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/* { dg-do compile } */
/* { dg-options "-O3 -fdump-ipa-inline-details -fno-ipa-cp -fno-early-inlining" } */
struct A {virtual int foo () {return 1;}};
struct B {int i; struct A a;};
struct C:A {virtual int foo () {return 2;}};
void dostuff(struct A *);
static void
test (struct A *a)
{
dostuff (a);
if (a->foo ()!= 2)
__builtin_abort ();
}
void
t(struct B *b)
{
test(&b->a);
}
/* Here b comes externally, but we take speculative hint from type of the pointer that it is
of type B. This makes A fully specified and we know C::foo is unlikely.
FIXME: We could most probably can devirtualize unconditonally because dereference of b in
&b->a makes the type known. GIMPLE does not represent this. */
/* { dg-final { scan-ipa-dump-times "Discovered a virtual call to a speculative target" 1 "inline" { xfail *-*-* } } } */
/* { dg-final { cleanup-ipa-dump "inline" } } */
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