[JITLink] Add TLS support for SystemZ

[anoopkg6]

This patch adds TLS support for SystemZ on top of orc-runtime support. A separate orc-runtime support #171062 has been created from earlier TLS support #170706.

See conversations in #170706

[uweigand]

This looks good in general, but see inline comments about the assembler file.

[github-actions]

🪟 Windows x64 Test Results

• 130155 tests passed
• 4126 tests skipped

✅ The build succeeded and all tests passed.

[uweigand]

LGTM now, thanks!

[llvm-ci]

LLVM Buildbot has detected a new failure on builder ppc64le-mlir-rhel-clang running on ppc64le-mlir-rhel-test while building compiler-rt,llvm at step 3 "clean-build-dir".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/129/builds/34814

Here is the relevant piece of the build log for the reference

Step 3 (clean-build-dir) failure: Delete failed. (failure) (timed out)
Step 6 (test-build-check-mlir-build-only-check-mlir) failure: 1200 seconds without output running [b'ninja', b'check-mlir'], attempting to kill
10.976 [0/1/0] Running the MLIR regression tests
command timed out: 1200 seconds without output running [b'ninja', b'check-mlir'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1212.159736

[llvm-ci]

LLVM Buildbot has detected a new failure on builder clang-ppc64le-linux-test-suite running on ppc64le-clang-test-suite while building compiler-rt,llvm at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/19404

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LeakSanitizer-Standalone-powerpc64le :: TestCases/create_thread_leak.cpp' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 3
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/./bin/clang  --driver-mode=g++ -O0  -m64 -fno-function-sections  -gline-tables-only -fsanitize=leak -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/../ -pthread /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp
# executed command: /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/./bin/clang --driver-mode=g++ -O0 -m64 -fno-function-sections -gline-tables-only -fsanitize=leak -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/../ -pthread /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp -o /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp
# RUN: at line 4
not  /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp 10 1 0 0 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK123
# executed command: not /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp 10 1 0 0
# executed command: FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK123
# RUN: at line 5
not  /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp 10 0 1 0 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK234
# executed command: not /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp 10 0 1 0
# executed command: FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK234
# RUN: at line 6
not  /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp 10 0 0 1 2>&1 | FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK234
# executed command: not /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/runtimes/runtimes-bins/compiler-rt/test/lsan/POWERPC64LELsanConfig/TestCases/Output/create_thread_leak.cpp.tmp 10 0 0 1
# note: command had no output on stdout or stderr
# error: command failed with exit status: 1
# executed command: FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK234
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/compiler-rt/test/lsan/TestCases/create_thread_leak.cpp --check-prefixes=LEAK,LEAK234
# `-----------------------------
# error: command failed with exit status: 2

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