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/* PR tree-optimization/21294
VRP did not notice that an address of the form &p->i is nonnull
when p is known to be nonnull. In this testcase, noticing that
allows us to eliminate the second "if" statement. */
/* { dg-do compile } */
/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp1-details" } */
struct f {
int i;
};
int
foo (struct f *p)
{
if (p != 0)
if (&p->i != 0)
return 123;
return 0;
}
/* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp1"} } */
/* { dg-final { cleanup-tree-dump "vrp1" } } */
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