[clang] [CIR] Emit CIR builtins: coroAlloc, coroBegin, and coroSize (PR #164180)

Fri Oct 24 17:58:08 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-win-x-aarch64` running on `as-builder-2` while building `clang` at step 15 "test-check-cxx-aarch64-unknown-linux-gnu".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/193/builds/11695

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

```
Step 15 (test-check-cxx-aarch64-unknown-linux-gnu) failure: Test just built components: check-cxx-aarch64-unknown-linux-gnu completed (failure)
******************** TEST 'llvm-libc++-static.cfg.in :: libcxx/atomics/atomics.types.generic/atomics.types.float/lockfree.pass.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# COMPILED WITH
C:/buildbot/as-builder-2/x-aarch64/build/./bin/clang++.exe C:\buildbot\as-builder-2\x-aarch64\llvm-project\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\lockfree.pass.cpp -pthread --target=aarch64-unknown-linux-gnu -nostdinc++ -I C:/buildbot/as-builder-2/x-aarch64/build/runtimes/runtimes-aarch64-unknown-linux-gnu-bins/libcxx/test-suite-install/include/c++/v1 -I C:/buildbot/as-builder-2/x-aarch64/build/runtimes/runtimes-aarch64-unknown-linux-gnu-bins/libcxx/test-suite-install/include/aarch64-unknown-linux-gnu/c++/v1 -I C:/buildbot/as-builder-2/x-aarch64/llvm-project/libcxx/test/support -std=c++26 -Werror -Wall -Wctad-maybe-unsupported -Wextra -Wshadow -Wundef -Wunused-template -Wno-unused-command-line-argument -Wno-attributes -Wno-pessimizing-move -Wno-noexcept-type -Wno-atomic-alignment -Wno-reserved-module-identifier -Wdeprecated-copy -Wdeprecated-copy-dtor -Wshift-negative-value -Wno-user-defined-literals -Wno-tautological-compare -Wsign-compare -Wunused-variable -Wunused-parameter -Wunreachable-code -Wno-unused-local-typedef -Wno-local-type-template-args -Wno-c++11-extensions -Wno-unknown-pragmas -Wno-pass-failed -Wno-mismatched-new-delete -Wno-redundant-move -Wno-self-move -Wno-nullability-completeness -flax-vector-conversions=none -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_ENABLE_EXPERIMENTAL -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -Wuser-defined-warnings  -lc++experimental -nostdlib++ -L C:/buildbot/as-builder-2/x-aarch64/build/runtimes/runtimes-aarch64-unknown-linux-gnu-bins/libcxx/test-suite-install/lib/aarch64-unknown-linux-gnu -lc++ -lc++abi -latomic -o C:\buildbot\as-builder-2\x-aarch64\build\runtimes\runtimes-aarch64-unknown-linux-gnu-bins\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\Output\lockfree.pass.cpp.dir\t.tmp.exe
# executed command: C:/buildbot/as-builder-2/x-aarch64/build/./bin/clang++.exe 'C:\buildbot\as-builder-2\x-aarch64\llvm-project\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\lockfree.pass.cpp' -pthread --target=aarch64-unknown-linux-gnu -nostdinc++ -I C:/buildbot/as-builder-2/x-aarch64/build/runtimes/runtimes-aarch64-unknown-linux-gnu-bins/libcxx/test-suite-install/include/c++/v1 -I C:/buildbot/as-builder-2/x-aarch64/build/runtimes/runtimes-aarch64-unknown-linux-gnu-bins/libcxx/test-suite-install/include/aarch64-unknown-linux-gnu/c++/v1 -I C:/buildbot/as-builder-2/x-aarch64/llvm-project/libcxx/test/support -std=c++26 -Werror -Wall -Wctad-maybe-unsupported -Wextra -Wshadow -Wundef -Wunused-template -Wno-unused-command-line-argument -Wno-attributes -Wno-pessimizing-move -Wno-noexcept-type -Wno-atomic-alignment -Wno-reserved-module-identifier -Wdeprecated-copy -Wdeprecated-copy-dtor -Wshift-negative-value -Wno-user-defined-literals -Wno-tautological-compare -Wsign-compare -Wunused-variable -Wunused-parameter -Wunreachable-code -Wno-unused-local-typedef -Wno-local-type-template-args -Wno-c++11-extensions -Wno-unknown-pragmas -Wno-pass-failed -Wno-mismatched-new-delete -Wno-redundant-move -Wno-self-move -Wno-nullability-completeness -flax-vector-conversions=none -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_ENABLE_EXPERIMENTAL -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -Wuser-defined-warnings -lc++experimental -nostdlib++ -L C:/buildbot/as-builder-2/x-aarch64/build/runtimes/runtimes-aarch64-unknown-linux-gnu-bins/libcxx/test-suite-install/lib/aarch64-unknown-linux-gnu -lc++ -lc++abi -latomic -o 'C:\buildbot\as-builder-2\x-aarch64\build\runtimes\runtimes-aarch64-unknown-linux-gnu-bins\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\Output\lockfree.pass.cpp.dir\t.tmp.exe'
# EXECUTED AS
"C:/Python313/python.exe" "C:/buildbot/as-builder-2/x-aarch64/llvm-project/libcxx/utils/ssh.py" --host=ubuntu at jetson-agx-2197.lab.llvm.org --execdir C:\buildbot\as-builder-2\x-aarch64\build\runtimes\runtimes-aarch64-unknown-linux-gnu-bins\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\Output\lockfree.pass.cpp.dir --  C:\buildbot\as-builder-2\x-aarch64\build\runtimes\runtimes-aarch64-unknown-linux-gnu-bins\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\Output\lockfree.pass.cpp.dir\t.tmp.exe
# executed command: C:/Python313/python.exe C:/buildbot/as-builder-2/x-aarch64/llvm-project/libcxx/utils/ssh.py --host=ubuntu at jetson-agx-2197.lab.llvm.org --execdir 'C:\buildbot\as-builder-2\x-aarch64\build\runtimes\runtimes-aarch64-unknown-linux-gnu-bins\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\Output\lockfree.pass.cpp.dir' -- 'C:\buildbot\as-builder-2\x-aarch64\build\runtimes\runtimes-aarch64-unknown-linux-gnu-bins\libcxx\test\libcxx\atomics\atomics.types.generic\atomics.types.float\Output\lockfree.pass.cpp.dir\t.tmp.exe'
# .---command stderr------------
# | ssh_dispatch_run_fatal: Connection to 10.1.1.133 port 22: Broken pipe
# | Traceback (most recent call last):
# |   File "C:\buildbot\as-builder-2\x-aarch64\llvm-project\libcxx\utils\ssh.py", line 145, in <module>
# |     exit(main())
# |          ~~~~^^
# |   File "C:\buildbot\as-builder-2\x-aarch64\llvm-project\libcxx\utils\ssh.py", line 141, in main
# |     runCommand(ssh("rm -r {}".format(tmp)), check=True)
# |     ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# |   File "C:\buildbot\as-builder-2\x-aarch64\llvm-project\libcxx\utils\ssh.py", line 57, in runCommand
# |     return subprocess.run(command, *args_, **kwargs)
# |            ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
# |   File "c:\python313\Lib\subprocess.py", line 577, in run
# |     raise CalledProcessError(retcode, process.args,
# |                              output=stdout, stderr=stderr)
# | subprocess.CalledProcessError: Command '['ssh', '-oBatchMode=yes', 'ubuntu at jetson-agx-2197.lab.llvm.org', 'rm -r /tmp/libcxx.T66gB94FIY']' returned non-zero exit status 255.
# `-----------------------------
# error: command failed with exit status: 1

--

********************

```

</details>

https://github.com/llvm/llvm-project/pull/164180