RFR: 8259398: Super word not applied to a loop with byteArrayViewVarHandle

[Vladimir Kozlov]

On Fri, 29 Jan 2021 17:48:59 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> Address expressing in this case has CastII which is not range check related.
>> I think it is safe to skip any CastII nodes (similar to ConvI2L nodes) when parsing address for vectors - vectors will be constructed only if the same loop's variable and invariant are used for all memory operations regardless casts. Also vectors address depends on loop's variable so they will not be moved outside loop.
>> In 32-bit VM there is no ConvI2L nodes so I moved CastII checks from under ConvI2L check.
>> 
>> New regression case added to TestBufferVectorization.java test.
>> 
>> Testing hs-tier1-7, RenaissanceStressTest. Run all vectorizing tests locally to make sure no regression.
>
> Looks good.

Thank you @iwanowww

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PR: https://git.openjdk.java.net/jdk/pull/2317