RFR: 8256072: Eliminate JVMTI tagmap rehashing [v3]

Wed Nov 2 22:23:57 UTC 2022

> Use identity_hash for objects in the JVMTI TagMap table.  If the object has no hashcode, it's not in the table.
> Tested with tier1-6.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Remove now-unused function that I missed.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/10938/files
  - new: https://git.openjdk.org/jdk/pull/10938/files/e549dcb5..f214791d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10938&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10938&range=01-02

  Stats: 20 lines in 6 files changed: 0 ins; 19 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/10938.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10938/head:pull/10938

PR: https://git.openjdk.org/jdk/pull/10938