JDK-8210756 : [lworld] C2 should optimize default oop load from known value klass
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: repo-valhalla
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2018-09-14
  • Updated: 2018-09-24
  • Resolved: 2018-09-24
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Other
repo-valhallaFixed
Related Reports
Relates :  
JDK-8210762 - [lworld] hotspot test Unsafe/RangeCheck.java fails with -Xcomp -XX:+EnableValhalla
Description
See:
http://mail.openjdk.java.net/pipermail/valhalla-dev/2018-September/004991.html
Comments
http://hg.openjdk.java.net/valhalla/valhalla/rev/2b17e91a12dc
24-09-2018
http://cr.openjdk.java.net/~thartmann/8210756/webrev.00/
21-09-2018
We should add a corresponding LoadNode::Value transformation similar to what we have for a java mirror load: http://hg.openjdk.java.net/valhalla/valhalla/file/3026ac6c13f3/src/hotspot/share/opto/memnode.cpp#l1837
14-09-2018