That's exactly the point: the optimizer *can* drop atomicity. All these ref-coun... | Hacker News

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mpweiher on Dec 1, 2016 | parent | context | favorite | on: Zero Cost Abstractions

That's exactly the point: the optimizer can drop atomicity. All these ref-counts may be optimized away. Or not. The opposite of predictability.

pjmlp on Dec 1, 2016 [–]

That is what profilers are for.

Even with pure Assembly, changing between CPU releases can have a big impact due to microcode changes or cache sizes.

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