JDK-6422076 : regression: problem with deoptimization of double locals kept in FP registers
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 6
  • Priority: P2
  • Status: Resolved
  • Resolution: Fixed
  • OS: solaris_9
  • CPU: sparc
  • Submitted: 2006-05-04
  • Updated: 2010-04-02
  • Resolved: 2006-05-25
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JDK 6
6 b85Fixed
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Description
Changes for the new register allocator broke the description of double locals kept in floating point registers on sparc.

Comments
SUGGESTED FIX http://analemma.sfbay.sun.com/net/prt-archiver.sfbay/data/archived_workspaces/main/c2_baseline/2006/20060505195716.never.fp/workspace/webrevs/webrev-2006.05.05/index.html
08-05-2006

EVALUATION There some swapping logic which is reversed in LinearScan::append_scope_value_for_operand
04-05-2006