[jdk21u-dev] RFR: 8340824: C2: Memory for TypeInterfaces not reclaimed by hashcons()

[Roland Westrelin]

clean backport of JDK-8340824

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

Commit messages:
 - Backport 90c944fefe4a7827c08a8e6a81f137c3157a749b

Changes: https://git.openjdk.org/jdk21u-dev/pull/1122/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1122&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340824
  Stats: 89 lines in 2 files changed: 14 ins; 11 del; 64 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1122.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1122/head:pull/1122

PR: https://git.openjdk.org/jdk21u-dev/pull/1122