This is a general cleanup after removing `LockingMode` related code. It's a sub-task of [JDK-8344261](https://bugs.openjdk.org/browse/JDK-8344261). It includes: - Removing asserts that are no longer necessary, since we removed legacy locking and monitor locking. - Removing or rewriting comments, arguments or functions that are related to displaced headers. - Remove "always true" parameter from `MonitorExitStub`. - Re-type/name metadata in `BasicLock`.
Tier1-5 passes okay on supported platforms. All other platforms (arm, ppc, riscv and s390) has been sanity checked using Qemu. ------------- Commit messages: - Merge branch 'master' into 8365191_lockingmode_cleanup - 8365191: Cleanup after removing LockingMode related code Changes: https://git.openjdk.org/jdk/pull/27448/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27448&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8365191 Stats: 168 lines in 34 files changed: 2 ins; 43 del; 123 mod Patch: https://git.openjdk.org/jdk/pull/27448.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27448/head:pull/27448 PR: https://git.openjdk.org/jdk/pull/27448
