RFR: 8326135: Enhance adlc to report unused operands [v3]

[kuaiwei]

On Wed, 28 Feb 2024 06:54:34 GMT, kuaiwei <duke at openjdk.org> wrote:

>> Please update Copyright year to 2024 in changed files if needed:
>> 
>> < // Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
>> ---
>>> // Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
>> 
>> And you need second review
>
> @vnkozlov @iwanowww Can you help sponsor it? Thanks.

> @kuaiwei I see new warnings when I build on AVX2 machine (no AVX512) with these changes. I filed [JDK-8326983](https://bugs.openjdk.org/browse/JDK-8326983). Please look.

Thanks for testing. I will check it.

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PR Comment: https://git.openjdk.org/jdk/pull/17910#issuecomment-1970697277