RFR: 8278171: [vectorapi] Mask incorrectly computed for zero extending cast

[Paul Sandoz]

On Thu, 2 Dec 2021 22:04:36 GMT, Mai Đặng Quân Anh <duke at openjdk.java.net> wrote:

>> I am inclined to separated out. Fix the bug, add the tests, and integrate for 18. Then enhance with the intrinsics for 19.
>> 
>> If you agree to that I will create two bugs.
>
> @PaulSandoz Yes, I think that should be the case, thank you very much.

@merykitty here you go:

[vectorapi] Mask incorrectly computed for zero extending cast
https://bugs.openjdk.java.net/browse/JDK-8278171

[vectorapi] Add x64 intrinsics for unsigned (zero extended) casts
https://bugs.openjdk.java.net/browse/JDK-8278173

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PR: https://git.openjdk.java.net/jdk/pull/6634