RFR: 8322768: Optimize non-subword vector compress and expand APIs for AVX2 target. [v2]

[Emanuel Peter]

On Thu, 4 Jan 2024 13:40:19 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Updating copyright year of modified files.
>
> src/hotspot/cpu/x86/stubGenerator_x86_64.cpp line 957:
> 
>> 955:   __ align(CodeEntryAlignment);
>> 956:   StubCodeMark mark(this, "StubRoutines", stub_name);
>> 957:   address start = __ pc();
> 
> Could you please add some comments here why you are filling the data like this?
> Presumably, you are emitting 32 bits and 64 bits respectively, right? So the cells have different size, correct?

Thanks for the comment addition!

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PR Review Comment: https://git.openjdk.org/jdk/pull/17261#discussion_r1442665042