RFR: 8224201: Simplify JVM flag macro expansions

[Robbin Ehn]

Hi Stefan,

Thanks for fixing!

/Robbin

On 2019-05-20 12:56, Stefan Karlsson wrote:
> Hi all,
> 
> Please review this patch to simplify how we generate the different parts of the 
> JVM flags code.
> 
> https://cr.openjdk.java.net/~stefank/8224201/webrev.01/
> https://bugs.openjdk.java.net/browse/JDK-8224201
> 
> Notable parts of the patch:
> - Introduces a ALL_FLAGS macro, used to expand code for all flags.
> - Uses the ALL_FLAGS where appropriate.
> - Constraints list didn't expand JVMCI flags. Fixed by using ALL_FLAGS.
> - Moved <sub-system>_globals.hpp generated declarations to be expanded in 
> globals.hpp.
> - Unified FLAG_MEMBER and FLAG_MEMBER_WITH_TYPE into FLAG_MEMBER_ENUM and change 
> names accordingly.
> 
> This change makes it easier to do future changes to the JVM flags handling code. 
> For example: "JDK-8224203Remove need to specify type when using FLAG_SET macros"
> 
> Compiled on tier1 platforms.
> 
> Thanks,
> StefanK
>