RFR: 8300543 Compiler Implementation for Pattern Matching for switch [v2]

[Maurizio Cimadamore]

On Tue, 18 Apr 2023 13:54:52 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

> I've also found an infinite loop with this:

I believe this has to do with the fact that the list of pattern is not a set - so we can end up adding the same pattern descriptions over and over.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13074#discussion_r1170110465