https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70734
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Marc Glisse from comment #2) > (In reply to Marc Glisse from comment #1) > > movl %edi, (%rdx) > > Looks like we fail to notice that the result of the addition is unused and > keep this dead store... It's not unused, it's stored to memory.