RFR: 8356259: Lift basic -Xlog:jit* logging to "info" level [v2]

[Vladimir Kozlov]

On Tue, 6 May 2025 19:18:54 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> We have unified logging for JIT activity: -Xlog:jit+compilation, -Xlog:jit+inlining, etc. These serve as convenient replacements for -XX:+PrintCompilation, -XX:+PrintInlining, etc. And these replacements are useful, because UL can be forwarded to file, their format can be adjusted, and they can be handled asynchronously.
>> 
>> However, all useful messages are on "debug" level, which is inconvenient and surprising. It is reasonable to expect some level of basic logging when supplying -Xlog:jit+compilation, e.g. "info" level. I believe we should lift at least some of the logging to "info" level for these.
>> 
>> Additional testing:
>>  - [x] Eyeballing `-Xlog:jit*` logs after the patch
>>  - [x] Linux x86_64 server fastdebug, `all`
>
> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Only do jit+compilation

Trivial.

-------------

Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25061#pullrequestreview-2819895653