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by kaba0
884 days ago
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> statically compiled languages I don’t think it’s relevant here, the JIT compiler can do the same optimizations here. If the branch predictor can basically 100% guess correctly (which will be the case in any correct program), it should not have any additional cost, besides taking up place in i$, so I would assume that that is responsible for the difference. |
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Correct. I was clarifying that the issue can be replicated in a "simpler" statically compiled benchmark.
> If the branch predictor can basically 100% guess correctly (which will be the case in any correct program), it should not have any additional cost
That isn't true. The CPU branch predictor has a cost no-matter what. Of course, it's a complicated story: https://blog.cloudflare.com/branch-predictor