----- On Aug 16, 2019, at 6:57 PM, Linus Torvalds torva...@linux-foundation.org wrote:
> So in general, we very much expect the compiler to do sane code > generation, and not (for example) do store tearing on normal > word-sized things or add writes that weren't there originally etc. My understanding of https://lwn.net/Articles/793253/ section "Store tearing" which points at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56028 seems to contradict your expectation at least when writing constants to a 64-bit word without a volatile access. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
