How can I code Java to allow SSE use and bounds-check elimination (or other advanced optimizations)?

Not a full answer, I simply don’t have time to do the detailed benchmarks your question needs but hopefully useful. Know your enemy You are targeting a combination of the JVM (in essence the JIT) and the underlying CPU/Memory subsystem. Thus “This is faster on JVM X” is not likely to be valid in all … Read more

Array bounds check efficiency in .net 4 and above

The bounds check won’t matter because: The bounds check consists of a cmp/jae instruction pair, which is fused into a single micro-op on modern CPU architectures (the term is “macro-op fusion”). Compare and branch is very highly optimized. The bounds check is a forward branch, which will be statically predicted to be not-taken, also reducing … Read more

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