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by adriaanm 3618 days ago
The code emitted by 2.12.0-M5 is slower in certain benchmarks, but I don't expect this to be the case for the final 2.12 release.

We're working on the performance issue, with help from the team at Oracle. The problem is likely the JIT having trouble optimizing the bytecode we emit in M5 (we know of other schemes that don't suffer this slowdown, but require more bytecode).