JDK-8191887 : assert(b->is_Bool()) in PhaseIdealLoop::clone_iff() due to Opaque4 node
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 10
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2017-11-27
  • Updated: 2017-12-15
  • Resolved: 2017-11-28
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JDK 10
10 b36Fixed
Related Reports
Relates :  
JDK-8176506 - C2: loop unswitching and unsafe accesses cause crash
Description
#  Internal Error (/home/roland/hs10/src/hotspot/share/opto/loopopts.cpp:1419), pid=24879, tid=24923
#  Error: assert(b->is_Bool()) failed
Comments
Pre-integration testing passed.
27-11-2017
The fix out for review includes a test case: http://cr.openjdk.java.net/~roland/8191887/webrev.00/ It reproduces 100% of the time with that test case. We've seen that crash running some specjvm 2008 benchmark but couldn't reproduce it.
27-11-2017
initial ILW = for now same as related 8176506 = MHM = P3 more info required regarding this assert failure case. any test case? is it easily reproducible?
27-11-2017