RFR: 8283307: Vectorize unsigned shift right on signed subword types [v3]

[Fei Gao]

On Sat, 4 Jun 2022 05:16:54 GMT, Jie Fu <jiefu at openjdk.org> wrote:

>>> As @fg1417 pointed, IR framework will not do any IR verification testing (it does not run test) when some flags are passed to test and not whitelisted (`UseAVX` and `UseSSE` are not on list):
>>> https://github.com/openjdk/jdk/blob/master/test/hotspot/jtreg/compiler/lib/ir_framework/TestFramework.java#L105
>> 
>> Ah, I see.
>> Thanks @vnkozlov for your explanation.
>
>> > I don't see these changes passed pre-submit GitHub testing. Make sure they passed.
>> 
>> I don't know why the pre-submit GitHub testing didn't run in this PR. So I create a draft PR for this patch to run the pre-submit testing: #9026 .
> 
> The pre-submit testing finished without regression. @vnkozlov @fg1417 
> Thanks.

Thanks for your help on GHA testing @DamonFool .

-------------

PR: https://git.openjdk.java.net/jdk/pull/7979