https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94988
--- Comment #10 from Alexandre Oliva <aoliva at gcc dot gnu.org> --- Reasoning that the concurrent stores invoke undefined behavior would enable us to assume that the stores don't alias, which invalidates the reasoning in comment 1. Alas, I don't think gimple preserves enough information for us to tell that two statements used to be concurrent so as to derive optimization opportunities from them.
