JDK-6625997 : CastPP, CheckCastPP and Proj nodes are not dead loop safe
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 7
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: solaris_9
  • CPU: sparc
  • Submitted: 2007-11-05
  • Updated: 2011-03-08
  • Resolved: 2011-03-08
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JDK 6 JDK 7 Other
6u14Fixed 7Fixed hs11Resolved
Description
CastPP, CheckCastPP and Proj nodes are not "dead" loop safe after
the putback 20061023120554.jrose.dolphin-cleanups which added
new mmethods Ideal_allocation(), Ideal_klass(), Ideal_length().
These methods could bypass the nodes chain to get a klass or 
an array's length from inputs of Allocation node:
Allocate <- Proj <- CheckCastPP.

As result dead data loop could be created.

Comments
EVALUATION See description.
05-11-2007