RFR: 8354242: VectorAPI: combine vector not operation with compare [v11]

[erifan]

On Tue, 9 Sep 2025 13:03:03 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> erifan has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update the code comment
>
> test/hotspot/jtreg/compiler/vectorapi/VectorMaskCompareNotTest.java line 1007:
> 
>> 1005:         testCompareMaskNotFloat(F_SPECIES, VectorOperators.NE, fa, fninf, (m) -> { return F_SPECIES.maskAll(true).xor(m); });
>> 1006:         verifyResultsFloat(F_SPECIES, VectorOperators.NE, fa, fninf);
>> 1007:     }
> 
> Do you have test cases for the cases other than `EQ` and `NE`? After all, we don't that someone accidentally messes with the logic you implemented later and we don't notice the bug ;)

For `float` and `double`, only `EQ` and `NE` are supported. So the positive test only includes these two OPs. And we have one negative test for other unsupported OPs, see  `testCompareMaskNotFloatNegative`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24674#discussion_r2347761055