cyb70289 commented on pull request #10846: URL: https://github.com/apache/arrow/pull/10846#issuecomment-890291119
Do you have benchmark results showing this code is faster than original one? Compilers are pretty smart in optimizing these common code patterns. Without solid benchmark data, I would prefer simpler code. Disassembler shows the dumb `if else` actually generates almost same code as this bithack trick. Modern CPUs all have `conditional move` instructions to remove trivial branches. https://godbolt.org/z/fqzs7rGev -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
