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Push Ifs Up And Fors Down
(matklad.github.io)
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this post was submitted on 17 Nov 2023
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Programming
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You still need to read the variable in each iteration, but the cost of that is probably negligible
Modern optimizing compilers are magical. I would need to check assembly but I would actually expect the if to be hoisted out of the loop entirely to relieve pressure on the branch predictor.