JDK-8235700 : SuperWord: Node::in(unsigned int) const [clone .isra.38] [clone .constprop.283]+0xc
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 11,12,13,14,15
  • Priority: P3
  • Status: Closed
  • Resolution: Duplicate
  • Submitted: 2019-12-10
  • Updated: 2019-12-11
  • Resolved: 2019-12-11
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JDK 15
15Resolved
Related Reports
Duplicate :  
JDK-8235762 - JVM crash in SWPointer during C2 compilation
Description
Generated test crashes again with JDK14 b27 where JDK-8229694 should have been fixed. So I am filing new bug.
Comments
Could be reproduced with a recent JDK 11 build whereas the attached test case to JDK-8229694 did not fail with JDK 11. A first guess is that it is a different problem where we just crash at the same location. The problem in JDK-8229694 was that an unexpected NULL value was read with SuperWord::align_to_ref(). The corresponding field _align_to_ref was set to NULL before in SuperWord::find_adjacent_refs(). There might be an additional unhandled case to the one fixed in JDK-8229694, where we set _align_to_ref to NULL. Deferring to 15 for now.
11-12-2019
Was able to reproduce it locally with UseAVX=1 only. Will investigate further.
11-12-2019