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Branchless Programming: Difference between revisions
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If the CPU predicts incorrectly, it will have to discard all pipelined results and go down the other route. | If the CPU predicts incorrectly, it will have to discard all pipelined results and go down the other route. | ||
Furthermore warps on GPUs must all go through both branches if there are threads which go down each branch. | Furthermore warps on GPUs must all go through both branches if there are threads which go down each branch. | ||
In general, I consider avoiding if statements to be a micro-optimization. | In general, I consider avoiding if statements to be a micro-optimization. | ||