JDK-7192965 : assert(is_aligned_sets(size)) failed: mask is not aligned, adjacent sets
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs24
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2012-08-21
  • Updated: 2013-08-01
  • Resolved: 2012-08-27
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JDK 7 JDK 8 Other
7u40Resolved 8Fixed hs24Fixed
Related Reports
Relates :  
JDK-6340864 - Implement vectorization optimizations in hotspot-server
Description
Regression after 6340864 changes:

#
#  Internal Error (C:\jprt\T\P1\170446.vkozlov\s\src\share\vm\opto/regmask.hpp:235), pid=8948, tid=4208
#  assert(is_aligned_sets(size)) failed: mask is not aligned, adjacent sets
#
Comments
The fix was integrated in first HS24-based build of JDK 7. The initial issue was caused by changes in the same build it was fixed in, so there is no way to reproduce it in any promoted build of JDK 8. Closed as not verified (setup not available).
01-08-2013
EVALUATION Bias coloring in RA does not work for vectors with size > 64 bits, it only works for pairs (64 bits). Change pair check to vector check. I did small refactoring and added comments.
23-08-2012
EVALUATION http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/f7cd53cedd78
23-08-2012
EVALUATION PhaseChaitin::choose_color() returns invalid vector register.
22-08-2012