Github user kiszk commented on the issue:
https://github.com/apache/spark/pull/19916
@mgaido91 Thank you for running the benchmark. I have two questions.
1. Did you confirm that you measured only the jitted code. This is because
this benchmark may not include warm-up run.
2. Did you have chance that loop body is not eliminated? This is because
local variable `b` and `b1` are not read anywhere. Thus, an optimizing compiler
may delete an store and related operations.
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