RFR: 8294715: Add IR checks to the reduction vectorization tests [v3]

Wed Mar 1 12:12:09 UTC 2023

On Wed, 22 Feb 2023 08:14:52 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Daniel Skantz has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Address further review comments (edits)
>
> test/hotspot/jtreg/compiler/loopopts/superword/RedTest_long.java line 166:
> 
>> 164:     @IR(applyIf = {"SuperWordReductions", "false"},
>> 165:         failOn = {IRNode.OR_REDUCTION_V})
>> 166:     @IR(applyIfCPUFeature = {"avx2", "true"},
> 
> Add a comment why we only require `AVX2`. Add "negative" rule when not present. Do that everywhere where you require more than `sse4.1`.

@danielogh Thanks for adding that!

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PR: https://git.openjdk.org/jdk/pull/12683