JDK-6667612 : Escape Analysis: disable loop clonning if it has a scalar replaceable allocation
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs12
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: solaris_10
  • CPU: sparc
  • Submitted: 2008-02-26
  • Updated: 2011-04-20
  • Resolved: 2011-04-20
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JDK 6 Other
6u14Fixed hs12Fixed
Clonning an allocation will not allow scalar replace it since memory operations
could not be associated with one allocation, unique type data graph is invalide
after such clonning.

EVALUATION See Description.

SUGGESTED FIX Do not clone a loop with a scalar replaceable allocation Also use 1 instead of 'true' for integer bitfields assignment.