RFR: 8339790: Support Intel APX setzucc instruction [v4]

Tue Sep 17 04:38:08 UTC 2024

On Mon, 16 Sep 2024 22:59:01 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> I think switching off a feature in `vm_version` file based on flags setting is correct.
>> So that in the rest of code we can simple check `VM_Version::supports_*()`.
>> Currently not all code follow this but it is preferable way.
>
> Sounds good, let us keep it this way (VM_Version::supports_*()).

Yes, CPU [feature is disabled](https://github.com/openjdk/jdk/commit/a4cf1918c963cbe0b0eee6db580f0769c0cbdbcc#diff-6ed856c57ddbe33e49883adb7c52ec51ed377e5f697dfd6d8bea505a97bfc5a5R1049) if UseAVX is set to false

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PR Review Comment: https://git.openjdk.org/jdk/pull/20920#discussion_r1762273687