JDK-8224592 : AArch64: Membar handling needs adjusting to support ZGC
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 13
  • Priority: P3
  • Status: Resolved
  • Resolution: Withdrawn
  • OS: generic
  • CPU: aarch64
  • Submitted: 2019-05-22
  • Updated: 2019-06-13
  • Resolved: 2019-06-13
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
Other
tbdResolved
Related Reports
Relates :  
JDK-8224675 - Late GC barrier insertion for ZGC
Relates :  
JDK-8214527 - AArch64: ZGC for Aarch64
Description
ZGC adds a more than one CAS, which causes problems when the ideal graph is processed for generating ldxr, stlxr instructions.
Roland Westerlin has supplied a fix for this issue, during this discussion:
https://mail.openjdk.java.net/pipermail/aarch64-port-dev/2018-November/006526.html
Comments
Not necessary - JDK-8224675 made this bug unnecessary.
13-06-2019
Through testing, this appears to be unnecessary in light of JDK-8224675.
31-05-2019