https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104688
GGanesh <Ganesh.Gopalasubramanian at amd dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |Ganesh.Gopalasubramanian@am | |d.com --- Comment #10 from GGanesh <Ganesh.Gopalasubramanian at amd dot com> --- Apologies for late response! We would update the AMD APM manuals in the next revision. For all AMD architectures, Processors that support AVX extend the atomicity for cacheable, naturally-aligned single loads or stores from a quadword to a double quadword. which means all 128b instructions, even the *MOVDQU instructions, are atomic if they end up being naturally aligned. Can we extend this patch to AMD processors as well. If not, I will plan to submit the patch for stage-1!