On Tue, 1 Oct 2024 09:53:02 GMT, Jatin Bhateja <jbhat...@openjdk.org> wrote:

>> Thanks for the example. Yes, you have a point there.  So we would need to do:
>>    src1.rearrange(this.lanewise(VectorOperators.AND, 2 * VLENGTH - 
>> 1).toShuffle(), src2);
>
>> This could instead be: src1.rearrange(this.lanewise(VectorOperators.AND, 2 * 
>> VLENGTH - 1).toShuffle(), src2); Or even simplified to: 
>> src1.rearrange(this.toShuffle(), src2);
> 
> Yes, this may save additional allocation penalty of result array allocation 
> which may slightly improve fall back performance, but logical operation 
> cannot be directly applied over floating point vectors. so, we will need an 
> explicit conversion to integral vector, which is why I opted for current 
> fallback implementation which is in line with rest of the code.

I see the problem with float/double vectors. Let us do the rearrange form only 
for Integral (byte, short, int, long) vectors then. For float/double vector we 
could keep the code that you have currently.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20508#discussion_r1783278063

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