JDK-6705887 : Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs14
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: solaris_10
  • CPU: x86
  • Submitted: 2008-05-21
  • Updated: 2013-11-01
  • Resolved: 2008-06-12
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.
JDK 6 JDK 7 Other
6u14Fixed 7Fixed hs13Fixed
Related Reports
Relates :  
Relates :  
Description
Currently C2 generates explicit narrow oops NULL checks (after 6703890 fix)
and decode narrow oops to form an extended address for x64.

Generate addresses and implicit null checks with narrow oops to avoid decoding.

Comments
EVALUATION See description.
30-05-2008