RFR: 8277617: Optimize array copy and clear on x86_64

Tue Nov 23 02:58:07 UTC 2021

On Tue, 23 Nov 2021 01:23:04 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

> Currently 32-byte instructions are used for small array copy and clear. 
> This can be optimized by using 64-byte instructions.
> 
> Please review.
> 
> Best Regards,
> Sandhya

But what exactly is it that you are checking for? What is the connection between the ISA version and the decision to effectively zero out AVX3Threshold?

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PR: https://git.openjdk.java.net/jdk/pull/6512