RFR: 8291809: Convert compiler/c2/cr7200264/TestSSE2IntVect.java to IR verification test [v2]

[Emanuel Peter]

On Thu, 18 Jan 2024 11:57:18 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> test/hotspot/jtreg/compiler/c2/cr7200264/TestIntVect.java line 643:
>> 
>>> 641:             a0[i] = (int)(a1[i]<<(-SHIFT));
>>> 642:         }
>>> 643:     }
>> 
>> Not sure why these don't vectorize. Need to investigate.
>
> They are shifted by 32 bit, so maybe that creates something odd?

I see this in the old code:
`@summary 7192963 changes disabled shift vectors`

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PR Review Comment: https://git.openjdk.org/jdk/pull/17428#discussion_r1457346541