https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104688

GGanesh <Ganesh.Gopalasubramanian at amd dot com> changed:

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                 CC|                            |Ganesh.Gopalasubramanian@am
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--- 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!
  • [Bug target/104688] g... Ganesh.Gopalasubramanian at amd dot com via Gcc-bugs

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