RFR: Merge jdk-21-ga

[Jiangli Zhou]

JDK 21 merge command: `$ git merge --no-ff jdk-21-ga`

Most manual merge for conflicts are mechanical.

- src/hotspot/cpu/aarch64/templateTable_aarch64.cpp
- src/hotspot/cpu/x86/templateTable_x86.cpp
Add extra `noreg` arg to `access_store_at` in `TemplateTable::lastore` and friends.

- src/hotspot/share/runtime/mutexLocker.cpp
Update TsanOopMap_lock to use MUTEX_DEFN.

- src/hotspot/share/runtime/sharedRuntime.cpp
Update unused_reg_map() to reflect RegisterMap change.

Additional updates:

- Field access flags related (related to https://github.com/openjdk/jdk21/commit/bfb812a8ff8bca70aed7695c73f019ae66ac6f33 change)
Change TSAN specific field access flag, JVM_ACC_FIELD_TSAN_IGNORE to be a FieldFlags, _ff_tsan_ignore. Add is_tsan_ignore() and update_tsan_ignore in FieldFlags and replace the existing usages in various places to use the FieldFlags functions for the tsan_ignore flag. Remove the old is_tsan_ignore() and set_tsan_ignore() from FieldInfo.

- init_lock related (related to https://github.com/jianglizhou/tsan/commit/9099f3e7b58deec50cd8af9db49b2b2e564a6bfe changes)
In instanceKlass.cpp, change to do SharedRuntime::tsan_acquire and SharedRuntime::tsan_release on the class mirror. 

In JDK 21, there is no eager_initialization (removed by https://github.com/openjdk/jdk/commit/cec23b1b078cd0c82063dda1af5a54ea561855c9). So we now only have SharedRuntime::tsan_acquire in InstanceKlass::initialize and SharedRuntime::tsan_release in InstanceKlass::set_initialization_state_and_notify with the latest version.

In InstanceKlass::set_initialization_state_and_notify, only do SharedRuntime::tsan_release for the mirror if
  the state is fully_initialized.

Remove the code for loading the address of init_lock in src/hotspot/cpu/x86/templateTable_x86.cpp and
  src/hotspot/cpu/aarch64/templateTable_aarch64.cpp. SharedRuntime::tsan_acquire calls are done with 
  `obj`.

Testing:

Built with following config:


$ bash configure --with-boot-jdk=/usr/local/google/home/jianglizhou/openjdk/jdk-21.0.1 --with-debug-level=release --disable-warnings-as-errors --with-jtreg=/usr/local/google/home/jianglizhou/github/jtreg/build/images/jtreg --with-stdc++lib=static --disable-precompiled-headers --enable-unlimited-crypto --with-native-debug-symbols=internal --with-default-make-target=jdk-image --disable-warnings-as-errors --with-toolchain-type=clang --disable-warnings-as-errors



$ make test TEST=hotspot/jtreg/tsan



==============================
Test summary
==============================
   TEST                                              TOTAL  PASS  FAIL ERROR   
>> jtreg:test/hotspot/jtreg/tsan                        79    76     3     0 <<
==============================
TEST FAILURE


Failed tests:
- tsan/NonRacyFinalizerLoopTest.java 
- tsan/NonRacySyncBlockExceptionLoopTest.java 
- tsan/NonRacyGarbageCollectionLoopTest.java

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

Commit messages:
 - Fix trailing whitespace.
 - - tsanOopMap.cpp
 - - Remove java_lang_Class::init_lock_addr and java_lang_Class::init_lock_offset_addr.
 - - Change TSAN specific field access flag, JVM_ACC_FIELD_TSAN_IGNORE to be a FieldFlags, _ff_tsan_ignore.
 - Merge tag 'jdk-21-ga' into jdk-21-merge
 - 8314062: ProblemList jdk/jfr/tool/TestView.java on macosx-x64
 - 8311179: Generational ZGC: gc/z/TestSmallHeap.java failed with OutOfMemoryError
 - 8313809: String template fails with java.lang.StringIndexOutOfBoundsException if last fragment is UTF16
 - 8312814: Compiler crash when template processor type is a captured wildcard
 - 8313345: SuperWord fails due to CMove without matching Bool pack
 - ... and 9228 more: https://git.openjdk.org/tsan/compare/83feada7...b2da2298

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - tsan: https://webrevs.openjdk.org/?repo=tsan&pr=18&range=00.0
 - jdk-21-ga: https://webrevs.openjdk.org/?repo=tsan&pr=18&range=00.1

Changes: https://git.openjdk.org/tsan/pull/18/files
  Stats: 3904603 lines in 24924 files changed: 2391750 ins; 1217503 del; 295350 mod
  Patch: https://git.openjdk.org/tsan/pull/18.diff
  Fetch: git fetch https://git.openjdk.org/tsan.git pull/18/head:pull/18

PR: https://git.openjdk.org/tsan/pull/18