RFR: 8325746: Refactor Loop Unswitching code [v8]

[Christian Hagedorn]

On Mon, 26 Feb 2024 11:36:03 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Do you mean an additional run? For the current run, we require the C2 flags in order to have loop peeling -> loop unswitching to get unswitching on a `BaseCountedLoopEndNode`. We might be able to find a test that requires fewer flags but I think it's okay to opt for a simpler test + flags.
>
> Yes, I thought you could just add another `@run` with fewer flags, so that external flags have more influence, and potentially trigger other cases.

Sounds good, added such a run.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17842#discussion_r1502492163