RFR: 8373524: C2: no reachable node should have no use [v3]

[Roland Westrelin]

On Wed, 17 Dec 2025 08:38:03 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Roland Westrelin has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   review
>
> test/hotspot/jtreg/compiler/igvn/TestNodeWithNoUseAfterPhiIdeal.java line 1:
> 
>> (failed to retrieve contents of file, check the PR for context)
> Since this is about IGVN, you could move the test to `compiler/igvn`.

Right. That makes sense. Done in the new commits.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28841#discussion_r2627227969