[libc] [llvm] [libc] Add functions to send/recv messages (PR #106467)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `libc-riscv64-debian-fullbuild-dbg` running on `libc-riscv64-debian` while building `libc,utils` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/183/builds/4163

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py ...' (failure)
...
CMake Error at /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:70 (get_target_property):
  get_target_property() called with non-existent target
  "libc.src.sys.socket.bind".
Call Stack (most recent call first):
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:142 (get_all_object_file_deps)
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/lib/CMakeLists.txt:22 (add_entrypoint_library)


CMake Error at /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:72 (get_target_property):
  get_target_property() called with non-existent target
  "libc.src.sys.socket.bind".
Call Stack (most recent call first):
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:142 (get_all_object_file_deps)
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/lib/CMakeLists.txt:22 (add_entrypoint_library)


CMake Error at /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/test/src/CMakeLists.txt:104 (get_target_property):
  get_target_property() called with non-existent target
  "libc.src.sys.socket.bind".


-- Registering ExampleIRTransforms as a pass plugin (static build: OFF)
-- Registering Bye as a pass plugin (static build: OFF)
-- Google Benchmark version: v0.0.0, normalized to 0.0.0
-- Enabling additional flags: -DINCLUDE_DIRECTORIES=/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/third-party/benchmark/include
-- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- failed to compile
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Performing Test HAVE_POSIX_REGEX -- success
-- Performing Test HAVE_STEADY_CLOCK -- success
-- Performing Test HAVE_PTHREAD_AFFINITY -- failed to compile
-- Configuring incomplete, errors occurred!
See also "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/CMakeFiles/CMakeOutput.log".
See also "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/CMakeFiles/CMakeError.log".
['cmake', '../llvm-project/llvm', '-GNinja', '-DCMAKE_C_COMPILER=clang', '-DCMAKE_CXX_COMPILER=clang++', '-DCMAKE_BUILD_TYPE=Debug', '-DLLVM_ENABLE_PROJECTS=llvm;libc', '-DLLVM_LIBC_FULL_BUILD=ON'] exited with return code 1.
The build step threw an exception...
Traceback (most recent call last):
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 164, in step
    yield
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 113, in main
    run_command(['cmake', os.path.join(source_dir, 'llvm')] + cmake_args)
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 179, in run_command
    util.report_run_cmd(cmd, cwd=directory)
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-zorg/zorg/buildbot/builders/annotated/util.py", line 49, in report_run_cmd
    subprocess.check_call(cmd, shell=shell, *args, **kwargs)
  File "/usr/lib/python3.10/subprocess.py", line 369, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '../llvm-project/llvm', '-GNinja', '-DCMAKE_C_COMPILER=clang', '-DCMAKE_CXX_COMPILER=clang++', '-DCMAKE_BUILD_TYPE=Debug', '-DLLVM_ENABLE_PROJECTS=llvm;libc', '-DLLVM_LIBC_FULL_BUILD=ON']' returned non-zero exit status 1.
@@@STEP_FAILURE@@@
@@@BUILD_STEP build libc@@@
Running: ninja libc
Step 5 (cmake) failure: cmake (failure)
...
  "libc.src.sys.socket.bind".
Call Stack (most recent call first):
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:63 (collect_object_file_deps)
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:142 (get_all_object_file_deps)
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/lib/CMakeLists.txt:22 (add_entrypoint_library)


CMake Error at /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:70 (get_target_property):
  get_target_property() called with non-existent target
  "libc.src.sys.socket.bind".
Call Stack (most recent call first):
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:142 (get_all_object_file_deps)
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/lib/CMakeLists.txt:22 (add_entrypoint_library)


CMake Error at /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:72 (get_target_property):
  get_target_property() called with non-existent target
  "libc.src.sys.socket.bind".
Call Stack (most recent call first):
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/cmake/modules/LLVMLibCLibraryRules.cmake:142 (get_all_object_file_deps)
  /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/lib/CMakeLists.txt:22 (add_entrypoint_library)
CMake Error at /home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/libc/test/src/CMakeLists.txt:104 (get_target_property):
  get_target_property() called with non-existent target
  "libc.src.sys.socket.bind".
-- Registering ExampleIRTransforms as a pass plugin (static build: OFF)
-- Registering Bye as a pass plugin (static build: OFF)
-- Google Benchmark version: v0.0.0, normalized to 0.0.0
-- Enabling additional flags: -DINCLUDE_DIRECTORIES=/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-project/third-party/benchmark/include
-- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- failed to compile
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Performing Test HAVE_POSIX_REGEX -- success
-- Performing Test HAVE_STEADY_CLOCK -- success
-- Performing Test HAVE_PTHREAD_AFFINITY -- failed to compile
-- Configuring incomplete, errors occurred!
See also "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/CMakeFiles/CMakeOutput.log".
See also "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/CMakeFiles/CMakeError.log".
['cmake', '../llvm-project/llvm', '-GNinja', '-DCMAKE_C_COMPILER=clang', '-DCMAKE_CXX_COMPILER=clang++', '-DCMAKE_BUILD_TYPE=Debug', '-DLLVM_ENABLE_PROJECTS=llvm;libc', '-DLLVM_LIBC_FULL_BUILD=ON'] exited with return code 1.
The build step threw an exception...
Traceback (most recent call last):
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 164, in step
    yield
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 113, in main
    run_command(['cmake', os.path.join(source_dir, 'llvm')] + cmake_args)
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/build/../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py", line 179, in run_command
    util.report_run_cmd(cmd, cwd=directory)
  File "/home/libc_worker/libc-riscv64-debian/libc-riscv64-debian-fullbuild-dbg/llvm-zorg/zorg/buildbot/builders/annotated/util.py", line 49, in report_run_cmd
    subprocess.check_call(cmd, shell=shell, *args, **kwargs)
  File "/usr/lib/python3.10/subprocess.py", line 369, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '../llvm-project/llvm', '-GNinja', '-DCMAKE_C_COMPILER=clang', '-DCMAKE_CXX_COMPILER=clang++', '-DCMAKE_BUILD_TYPE=Debug', '-DLLVM_ENABLE_PROJECTS=llvm;libc', '-DLLVM_LIBC_FULL_BUILD=ON']' returned non-zero exit status 1.

```

</details>

https://github.com/llvm/llvm-project/pull/106467