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

[Andrew Haley]

On 02/09/2020 18:40, Vladimir Ivanov wrote:
> C2 doesn't rematerialize FP constants on AArch64

I think that's probably right, even though a few FP constants are
cheap. Loads from L1 usually have a 4 (or 5) cycle latency, which can
make spilling constants expensive around calls. We could be smarter
about this.

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