RFR 8232009: Shenandoah: C2 load barrier does not match interpreter version

[Zhengyu Gu]

Updated: Webrev: http://cr.openjdk.java.net/~zgu/JDK-8232009/webrev.01/

Added PHANTOM_OOP_REF references.

Test:
  Reran tests

Thanks,

-Zhengyu

On 10/11/19 1:11 PM, Zhengyu Gu wrote:
> Please review this patch that matches C2 load barrier to interpreter's 
> implementation.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8232009
> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8232009/webrev.00/
> 
> Test:
>    hotspot_gc_shenandoah (fastdebug and release) with x86_32 and x86_64 
> JVMs on Linux
> 
> 
> Thanks,
> 
> -Zhengyu