RFR: 8282208: Reduce MachNode size

Wed Feb 23 08:57:05 UTC 2022

On Wed, 23 Feb 2022 01:22:20 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> There are several failures in the github tests. Did you test the failing cases with your patch?
> 
> Also, we'd better update the copyright year. Thanks.

I looked at the test failures, and they look unrelated. I've also run separate testing that didn't show these failures.

The github tests will run again now.

Updated copyright year.

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PR: https://git.openjdk.java.net/jdk/pull/7562