RFR [11], 2018-07-10, Bulk backports to sh/jdk11

[Roman Kennke]

Am 10.07.2018 um 18:37 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk11-20180710/webrev.01/
> 
> This backports today's important fixes to sh/jdk11:
> 
>  [backport] Micro-optimize AArch64 assembly write-barriers
>  [backport] Remove C2 write-barrier from .ad files
>  [backport] Assembler write barriers should consistently check for forwarded objects
>  [backport] Re-add Shenandoah TLAB allocation in aarch64 assembly
>  [backport] Use correct 2-/3-op form of logical_and and put mask in register in C1 write-barrier
>  [backport] Bind entry and jump to continuation in aarch64 write-barrier stub
>  [backport] Fail when -XX:+UseShenandoahGC is used on unsupported platform
>  [backport] Consolidate assembly write barriers
> 
> Testing: tier3_gc_shenandoah {fastdebug|release}, aarch64 hello world
> 
> (sh/jdk nightly is running with these patches, I'll push if that nightly is clean)
> 
> Thanks,
> -Aleksey
> 

Very good! Thank you!
Roman