* Gilles Sadowski:

> Let me elaborate:
> At some point of the simulation, the same quantity Q can be computed in 2
> different ways, say "QH" and "QL".  When using "QL", the program is about
> twice as fast as when using "QL".  This is confirmed when using "-Xint".
> Leaving out "-Xint" (for maximum performance), the result is, quite
> surprisingly, the other way around:  Using "QL" is about 50% slower than
> with "QH"!
>
> Doesn't this indicate some subtle bug in the JIT compiler?

What about the absolute performance numbers?  As long as long-running
code doesn't run slower without -Xint, I don't think this is a JIT
bug.  It's somewhat expected that relative performance changes.


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