RFR: 8254129: IR Test Framework to support regex-based matching on the IR in JTreg compiler tests [v7]

[Christian Hagedorn]

On Sun, 2 May 2021 20:59:46 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> I don't have a strong opinion here. let's start w/ what you have now, we can always change it later if we find that its complexity doesn't bring much value.
>
> Sounds good. I'll push an update with the changes tomorrow. Thanks for your review!

I moved to a file-based approach for the flag VM and cleaned the socket up for the sole usage for the test VM.

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PR: https://git.openjdk.java.net/jdk/pull/3508