RFR: 8256820: AArch64: Optimize vector rotate (immediate) with shift and insert instructions [v2]

Andrew Haley aph at redhat.com
Wed Dec 16 11:35:20 UTC 2020


On 16/12/2020 02:02, Dong Bo wrote:
> aph wrote:
>> So, any change which causes divergence between microarchitectures must
>> be needed, or it isn't worth the risk. It's not in your interest for
>> that to happen, either.
>>
> OKAY, this does make sense to us, we don't want to take the possible risk neither.
> By far, I think it's not worthy, unless we see a profitable workload one day.
> As of now, I am going to withdraw this.

Thank you for your understanding and co-operation. I know that it's
hard to throw work away, but we'll never know if changes are worthwhile
unless we try them. It wasn't a waste of time.

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