[llvm] [HotColdSplit] Don't outline musttail calls. (PR #133177)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-arm-ubuntu` running on `linaro-lldb-arm-ubuntu` while building `llvm` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/18/builds/13685

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test) failure: build (failure)
...
UNSUPPORTED: lldb-api :: macosx/corefile-exception-reason/TestCorefileExceptionReason.py (993 of 2932)
UNSUPPORTED: lldb-api :: macosx/ctf/TestCTF.py (994 of 2932)
UNSUPPORTED: lldb-api :: macosx/debugserver-exit-code/TestDebugServerExitCode.py (995 of 2932)
UNSUPPORTED: lldb-api :: macosx/delay-init-dependency/TestDelayInitDependency.py (996 of 2932)
PASS: lldb-api :: lldbutil-tests/failed-to-hit-breakpoint/TestLLDBUtilFailedToHitBreakpoint.py (997 of 2932)
UNSUPPORTED: lldb-api :: macosx/dyld-trie-symbols/TestDyldTrieSymbols.py (998 of 2932)
UNSUPPORTED: lldb-api :: macosx/early-process-launch/TestEarlyProcessLaunch.py (999 of 2932)
UNSUPPORTED: lldb-api :: macosx/expedited-thread-pcs/TestExpeditedThreadPCs.py (1000 of 2932)
UNSUPPORTED: lldb-api :: macosx/find-app-in-bundle/TestFindAppInBundle.py (1001 of 2932)
UNSUPPORTED: lldb-api :: macosx/find-dsym/bundle-with-dot-in-filename/TestBundleWithDotInFilename.py (1002 of 2932)
FAIL: lldb-api :: macosx/duplicate-archive-members/TestDuplicateMembers.py (1003 of 2932)
******************** TEST 'lldb-api :: macosx/duplicate-archive-members/TestDuplicateMembers.py' FAILED ********************
Script:
--
/usr/bin/python3.10 /home/tcwg-buildbot/worker/lldb-arm-ubuntu/llvm-project/lldb/test/API/dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./lib --env LLVM_INCLUDE_DIR=/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/include --env LLVM_TOOLS_DIR=/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin --arch armv8l --build-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build.noindex --lldb-module-cache-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/lldb --compiler /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/clang --dsymutil /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/dsymutil --make /usr/bin/gmake --llvm-tools-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin --lldb-obj-root /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/tools/lldb --lldb-libs-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./lib /home/tcwg-buildbot/worker/lldb-arm-ubuntu/llvm-project/lldb/test/API/macosx/duplicate-archive-members -p TestDuplicateMembers.py
--
Exit Code: -11

Command Output (stdout):
--
lldb version 21.0.0git (https://github.com/llvm/llvm-project.git revision b394babddcec466a4cb8f31ea94b99c1b934ea71)
  clang revision b394babddcec466a4cb8f31ea94b99c1b934ea71
  llvm revision b394babddcec466a4cb8f31ea94b99c1b934ea71
Skipping the following test categories: ['libc++', 'dsym', 'gmodules', 'debugserver', 'objc']

--
Command Output (stderr):
--
UNSUPPORTED: LLDB (/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/bin/clang-arm) :: test_dsym (TestDuplicateMembers.BSDArchivesTestCase) (test case does not fall in any category of interest for this run) 
PASS: LLDB (/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/bin/clang-arm) :: test_dwarf (TestDuplicateMembers.BSDArchivesTestCase)
PASS: LLDB (/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/bin/clang-arm) :: test_dwo (TestDuplicateMembers.BSDArchivesTestCase)
----------------------------------------------------------------------
Ran 3 tests in 0.993s

OK (skipped=1)

--

********************
UNSUPPORTED: lldb-api :: macosx/find-dsym/deep-bundle/TestDeepBundle.py (1004 of 2932)
UNSUPPORTED: lldb-api :: macosx/format/TestFunctionNameWithoutArgs.py (1005 of 2932)
UNSUPPORTED: lldb-api :: macosx/function-starts/TestFunctionStarts.py (1006 of 2932)
UNSUPPORTED: lldb-api :: macosx/ignore_exceptions/TestIgnoredExceptions.py (1007 of 2932)
UNSUPPORTED: lldb-api :: macosx/indirect_symbol/TestIndirectSymbols.py (1008 of 2932)
UNSUPPORTED: lldb-api :: macosx/lc-note/addrable-bits/TestAddrableBitsCorefile.py (1009 of 2932)
UNSUPPORTED: lldb-api :: macosx/lc-note/firmware-corefile/TestFirmwareCorefiles.py (1010 of 2932)
UNSUPPORTED: lldb-api :: macosx/lc-note/kern-ver-str/TestKernVerStrLCNOTE.py (1011 of 2932)
UNSUPPORTED: lldb-api :: macosx/lc-note/multiple-binary-corefile/TestMultipleBinaryCorefile.py (1012 of 2932)
UNSUPPORTED: lldb-api :: macosx/macCatalyst/TestMacCatalyst.py (1013 of 2932)

```

</details>

https://github.com/llvm/llvm-project/pull/133177