RFR: 8355488: Add stress mode for C2 loop peeling [v3]

[Marc Chevalier]

On Thu, 15 May 2025 13:11:09 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Marc Chevalier has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Back to PRODUCT for consistency
>
> One suggestion, otherwise, it looks good to me! 
> 
> Worth mentioning, this stress flag already found a bug:
> [JDK-8356084](https://bugs.openjdk.org/browse/JDK-8356084)

Applied requested changes. I have a similar opinion as @chhagedorn on "attempts", but I don't see better and I don't think it's so bad, so fine with me.

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PR Comment: https://git.openjdk.org/jdk/pull/25140#issuecomment-2885944627