https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98817
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- cmov has the exact same problem as the unconditional store. At least on x86 a cmov for one doesn't have a MEM destination and so the conditionally assigned register then needs to be unconditionally stored. You'd need an instruction that would store only if the condition is true (something like SSE/AVX masked stores, but for scalars).
