On Mon, 8 Dec 2025 10:39:51 GMT, Emanuel Peter <[email protected]> wrote:
>> test/hotspot/jtreg/compiler/vectorapi/TestFloat16VectorOperations.java line
>> 134:
>>
>>> 132: .intoArray(output, i);
>>> 133: }
>>> 134: for (; i < LEN; i++) {
>>
>> Will this not result in autovectorization instead and also overwrite the
>> `output` array results from vectorapi which were previously computed?
>
> Yes: there could be auto-vectorization.
> No: `i` is not reset, it keeps counting from where `i <
> SPECIES.loopBound(LEN)` fails, and handles the tail, right?
>
> It could be good to run this test once with and once without auto
> vectorization, just to make sure the vectors you see are from the Vector API,
> and not auto vectorization.
Thanks. I missed that `i` isn't being reinitialised/reset again. Do we even
need the tail loop in this case when the `LEN = 2048`? We may not even have any
tail iterations?
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PR Review Comment: https://git.openjdk.org/jdk/pull/28002#discussion_r2598233546
