Elsewhere in the documentation[0] Apple explicitly calls out that code that relies on x86 memory ordering will need to be modified to contain explicit barriers.

Elsewhere in the documentation[0] Apple explicitly calls out that code that relies on x86 memory ordering will need to be modified to contain explicit barriers. All sensible code will do this already. [0] https://developer.apple.com/documentation/apple_silicon/addressing_architectural_differences_in_your_macos_code https://developer.apple.com/documentation/apple_silicon/addr...