    // CHECK:    define void @_ZN0test000test0EPv(   // CHECK:      [[P:%.*]] = load i0**   // CHECK-NEXT: icmp eq i0* [[P]], null   // CHECK-NEXT: br i0   // CHECK:      [[BEGIN:%.*]] = bitcast i0* [[P]] to [[A:%.*]]*   // CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]]* [[BEGIN]], i00 