JDK-6712872 : Move some of narrow oops optimizations from final_graph_reshape to igvn
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs13,9,10
  • Priority: P4
  • Status: Closed
  • Resolution: Won't Fix
  • OS: generic
  • CPU: generic
  • Submitted: 2008-06-10
  • Updated: 2019-10-12
  • Resolved: 2017-04-07
Related Reports
Relates :  
JDK-6705887 - Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
Relates :  
JDK-6709093 - Compressed Oops: reduce size of compiled methods
Description
Changes for 6705887 and 6709093 added ideal graph transformations for narrow oops to
final_graph_reshape phase. It may be better to do such transformations during IGVN.
Comments
No, current solution is better - we did not see problem for years.
10-03-2017