RFR: 8290432: C2 compilation fails with assert(node->_last_del == _last) failed: must have deleted the edge just produced [v3]

[Yi Yang]

On Tue, 9 Aug 2022 17:16:02 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> I still think the issue is in some other place.

Why? Can you clarify more? The root cause seems clear: the unexpected `Add->CastII->Phi` pattern was matched due to changes in [JDK-8273585](https://bugs.openjdk.org/browse/JDK-8273585) and finally leads the crash.

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PR: https://git.openjdk.org/jdk/pull/9695