On Thu, Feb 24, 2022 at 9:39 PM Satish Vasudeva via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > > Please let into this intel architecture manual , section 8.1.1 > > https://cdrdv2.intel.com/v1/dl/getContent/671190 > > I think Intel claims 16B operations are atomic , unless I am missing > something. Interesting. This seems to be a somewhat recent addition, and the mailing list discussion linked to above predates it. Coincidentally, I pulled a copy of the Intel manuals at almost exactly the same time as this discussion, and sure enough, it does not yet contain the paragraph about 16 byte operations.
