RFR: 8282547: IGV: add control-flow graph view [v2]

[Roberto Castañeda Lozano]

On Thu, 17 Mar 2022 10:03:17 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Roberto Castañeda Lozano has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Refactor code as suggested by Christian
>
> src/utils/IdealGraphVisualizer/Layout/src/main/java/com/sun/hotspot/igv/layout/Link.java line 37:
> 
>> 35:     public Port getFrom();
>> 36: 
>> 37:     public Cluster getFromCluster();
> 
> `public` can be removed for interface methods.

I declared it explicitly as `public` for consistency with the rest of the IGV project, see my earlier reply.

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PR: https://git.openjdk.java.net/jdk/pull/7817