RFR: 8265938: C2's conditional move optimization does not handle top Phi

[Igor Ignatyev]

On Tue, 27 Apr 2021 16:03:47 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> I think JTREG may kill process when main thread exits or something like that.

correct, jtreg exits the process almost immediately after the main method exits.

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PR: https://git.openjdk.java.net/jdk/pull/3684