RFR: 8245723: Remove PrintCompressedOopsMode and gc+heap+coops info log to debug level

[David Holmes]

Hi Stefan,

That all seems fine to me.

Aside: I couldn't tell why 
runtime/CompressedOops/CompressedClassPointers.java was actually using 
the flag. Do you think it is just for additional diagnostics in case of 
failure?

Thanks,
David

On 26/05/2020 10:16 pm, stefan.johansson at oracle.com wrote:
> Hi,
> 
> Please review this change that removes the deprecated diagnostic option 
> PrintCompressedOopsMode.
> 
> Webrev: http://cr.openjdk.java.net/~sjohanss/8245723/00/
> JBS: https://bugs.openjdk.java.net/browse/JDK-8245723
> 
> Summary
> After adding the new gc+init logging in JDK-8244817, the info logging on 
> gc+heap+coops can be moved to debug level. When looking into this I 
> realized that gc+heap+coops=info has an old alias flag, 
> PrintCompressedOopsMode, connected to it. I see no reason keeping this 
> flag around and from what I understand we don't need to do anything 
> special since it has been deprecated since JDK 9.
> 
> Testing
> Locally verified output and run the tests affected. Also Mach5 tier1-2.
> 
> Thanks,
> Stefan