https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70814
--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- I don't think so. It's to do with whether the CPU is permitted to 'crack' the operation into multiple micro-ops that proceed independently down the pipeline. LDAXP could still be cracked in this way provided that from that CPU's perspective other memory operations from that core were not re-ordered with respect to that operation in an incompatible manner. However, external memory operations could still cause the separate micro-ops to see different values.
