RFR: 8255429: Remove C2-based profiling

[Eric Liu]

On Wed, 28 Oct 2020 00:35:45 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> If there are no objections I'd like to remove some obsolete code that was an experiment to implement profiling in C2. It was added during the first tiered compilation experiments and is not unused.
>
> Looks good.

Do you mean that those profiling data never used before ? I noticed that those data was collected during abstract interpretation, is that `the first tiered compilation` you mean ?

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PR: https://git.openjdk.java.net/jdk/pull/888