RFR [8u]: Bulk backport to sh/jdk8u

[Roman Kennke]

Am 26.10.2017 um 16:40 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20171026/webrev.01/
>
> This bugfix bunch comes with compiler fixes by Roland mostly.
>
> The changes include:
>
> rev 10155 : [backport] Rewrite and fix ShenandoahHeap::marked_object_iterate
> rev 10156 : [backport] barrier moved due to null checks needs to always fix memory edges
> rev 10157 : [backport] Incorrect constant folding with final field and -ShenandoahOptimizeFinals
> rev 10158 : [backport] AESCrypt.implEncryptBlock/AESCrypt.implDecryptBlock intrinsics assume non
> null inputs
> rev 10159 : [backport] keep read barriers for final instance/stable field accesses
> rev 10160 : [backport] Added diagnostic flag ShenandoahOOMDuringEvacALot
> rev 10161 : [backport] Rename dynamic heuristics to static
> rev 10162 : [backport] Static heuristics should use non-zero allocation threshold
> rev 10163 : [backport] Static heuristics should be really static and report decisions
>
> Testing: hotspot_gc_shenandoah {fastdebug|release}
>
> Thanks,
> -Aleksey
>
Good!