[aarch64-port-dev ] [16] RFR(S): 8251525: AARCH64: Faster Math.signum(fp)

[Andrew Haley]

On 03/09/2020 13:03, Dmitry Chuyko wrote:
> I pushed the change for signum, and opened an RFE [1] for fp 
> re-materialization on aarch64. We've made some experiments already. On 
> N1 simply enabling it makes workloads like Lucene geo search ~0.7% 
> faster, will get back with more data.

Even though we have to push FP constants into the constant pool?
Interesting. I guess there's less spilling gets done. It'd be
interesting to see the difference in the code.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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