RFR: 8367728: IGV: dump node address type

[Roberto Castañeda Lozano]

On Tue, 16 Sep 2025 10:11:50 GMT, Roberto Castañeda Lozano <rcastanedalo at openjdk.org> wrote:

> This changeset dumps the address type of each node (`Node::adr_type()`), when not null, into the IGV graphs. This should improve the visibility and diagnosability of C2 type inconsistencies, see e.g. [JDK-8367667](https://bugs.openjdk.org/browse/JDK-8367667).
> 
> #### Testing
> - tier1 (windows-x64, linux-x64, linux-aarch64, macosx-x64, and macosx-aarch64; release and debug mode).
> - Tested IGV manually on a few selected graphs. Tested automatically that dumping thousands of graphs does not trigger any assertion failure (by running `java -Xcomp -XX:PrintIdealGraphLevel=1`).

Thanks for reviewing Marc, Damon, and Christian!

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PR Comment: https://git.openjdk.org/jdk/pull/27310#issuecomment-3302823069