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Posted to github@arrow.apache.org by "cyb70289 (via GitHub)" <gi...@apache.org> on 2023/09/13 14:54:42 UTC

[GitHub] [arrow] cyb70289 commented on issue #37678: [C++][Compute] Checked arithmetic functions are slow-ish

cyb70289 commented on issue #37678:
URL: https://github.com/apache/arrow/issues/37678#issuecomment-1717795510

   Did a quick test, looks the gap should be smaller.
   https://quick-bench.com/q/ywSl6NYEUc2KYq4h6MkP7t3yWqo
   
   The checked version uses gcc `__builtin_*_overflow`, same as [safe-math](https://github.com/nemequ/portable-snippets/tree/master/safe-math).
   From disassembly, the uncheck version is vectorized.


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