Java 8 loop optimization puzzle

[Arnaud Roger]

Hi all,

I faced a puzzling performance behavior that seems to be link

to the asm generated, I wrote a summary here :

https://arnaudroger.github.io/blog/2016/10/30/java-performance-puzzle.html

I have a tight loop with 3 conditions in it and looks like on the slow mode the vm is puting some of the conditionnal path outside in the for loop before checking the condition. That's the teaser there is a lot more in the post.

I wonder if you guys could see any issues with the analysis, or shed some light on the heuristics that could lead to that.

Regards, Arnaud