RFR: 8222029: Optimize Math.floorMod

[Andrew Haley]

On 4/5/19 2:44 PM, Claes Redestad wrote:
> Testing: tier1-2, all Math tests run locally, -prof perfasm verification
> on the provided microbenchmark.

Looks good.

I've kicked the tyres on AArch64, and it looks like a useful optimization. The
gains when the divisor is constant (a common case) are modest but worthwhile.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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