RFR: 8318650: Optimized subword gather for x86 targets. [v14]

[Emanuel Peter]

On Mon, 26 Feb 2024 14:58:53 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> I could not find any other case with the same pattern, of initializing a list of Labels.
>> 
>> On the other hand, I can find cases where we already do what I am saying:
>> `C2_MacroAssembler::rtm_counters_update`
>
> Hi @eme64 , I was referring to allocation of label's array.  To be concise and avoid hand unrolling of loop, I chose an array of labels.

I was referring to the various arrays as well above. I think it would be exactly more concise if you defined a local label in the loop body.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16354#discussion_r1502762386