JDK10/RFR(M): 8172232: SPARC ISA/CPU feature detection is broken/insufficient (on Linux).

[Patric Hedlin]

Dear all,

I would like to ask for help to review the following change/update:

Issue:  https://bugs.openjdk.java.net/browse/JDK-8172232

Webrev: http://cr.openjdk.java.net/~phedlin/tr8172232/


8172232: SPARC ISA/CPU feature detection is broken/insufficient (on Linux).

     Subsumes (duplicate) JDK-8186579: VM_Version::platform_features() 
needs update on linux-sparc.


Caveat:

     This update will introduce some redundancies into the code base, 
features and definitions
     currently not used, addressed by subsequent bug or feature 
updates/patches. Fujitsu HW is
     treated very conservatively.


Testing:

     JDK9/JDK10 local jtreg/hotspot


Thanks to Adrian for additional test (and review) support.

Tested-By: John Paul Adrian Glaubitz <glaubitz at physik.fu-berlin.de>


Best regards,
Patric