RFR: 8293287 add ReplayReduce flag [v2]

[Dean Long]

On Fri, 2 Sep 2022 20:41:58 GMT, Dean Long <dlong at openjdk.org> wrote:

>> Add an experimental flag to help developers "reduce" a replay file.
>> 
>> As a first step, I plan to simulate reduced inlining. This will output multiple "compile" lines as if the first level of inlining never happened:
>> A --> B --> C
>> A --> D --> E
>> becomes
>> B --> C
>> D --> E
>> Developers can repeat iteratively until the replay crash no longer reproduces.
>
> Dean Long has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - add assert
>  - fix for TestVMNoCompLevel.java test failure

Unfortunately, the TestVMNoCompLevel.java test is still failing on some platforms.  I'm tempted to remove that test, as it doesn't not seem to add value anymore.

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PR: https://git.openjdk.org/jdk/pull/10134