[lworld] RFR: 8258026: [lworld] Endless deoptimization at defaultvalue due to unresolved klass

[Tobias Hartmann]

Similar to `new`, C2's typeflow analysis should trap if the klass is unresolved at `defaultvalue`.

Thanks,
Tobias

-------------

Commit messages:
 - 8258026: [lworld] Endless deoptimization at defaultvalue due to unresolved klass

Changes: https://git.openjdk.java.net/valhalla/pull/300/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=300&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258026
  Stats: 10 lines in 2 files changed: 0 ins; 8 del; 2 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/300.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/300/head:pull/300

PR: https://git.openjdk.java.net/valhalla/pull/300