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/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
/* { dg-options "-O2 -fdump-rtl-loop2_invariant" } */
/* NOTE: The target list above could be extended to other targets that have
conditional moves, but don't have zero registers. */
enum test_type
{
TYPE0,
TYPE1
};
struct type_node
{
enum test_type type;
};
struct test_ref
{
struct type_node *referring;
};
struct test_node
{
struct test_node *next;
};
int iterate (struct test_node *, unsigned, struct test_ref **);
int
loop_invar (struct test_node *node)
{
struct test_ref *ref;
for (unsigned i = 0; iterate (node, i, &ref); i++)
if (loop_invar ((ref->referring && ref->referring->type == TYPE0)
? ((struct test_node *) (ref->referring)) : 0))
return 1;
return 0;
}
/* { dg-final { scan-rtl-dump "Decided to move invariant" "loop2_invariant" } } */
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