https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64715
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> --- In *r_2(D) = 0; _4 = r_2(D) + 4; *_4 = 1; _6 = *r_2(D); there are no handled components, so there is no reason not to create &MEM_REF[r_2, 4]. But it shouldn't be hard to construct similar testcase where there are fields and we would regress.