[llvm] [RISCV] Set a barrier between mask producer and user of V0 (PR #114012)

Fri Nov 29 00:32:43 PST 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-win-x-armv7l` running on `as-builder-1` while building `llvm` at step 14 "test-check-cxxabi-armv7-unknown-linux-gnueabihf".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/38/builds/1023

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

```
Step 14 (test-check-cxxabi-armv7-unknown-linux-gnueabihf) failure: Test just built components: check-cxxabi-armv7-unknown-linux-gnueabihf completed (failure)
******************** TEST 'llvm-libc++abi-static.cfg.in :: uncaught_exception.pass.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# COMPILED WITH
C:/buildbot/as-builder-1/x-armv7l/build/./bin/clang++.exe C:\buildbot\as-builder-1\x-armv7l\llvm-project\libcxxabi\test\uncaught_exception.pass.cpp  --target=armv7-unknown-linux-gnueabihf -nostdinc++ -I C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/include -I C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/include/c++/v1 -I C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/include/armv7-unknown-linux-gnueabihf/c++/v1 -I "C:/buildbot/as-builder-1/x-armv7l/llvm-project/libunwind/include" -I C:/buildbot/as-builder-1/x-armv7l/llvm-project/libcxxabi/../libcxx/test/support -I C:/buildbot/as-builder-1/x-armv7l/llvm-project/libcxxabi/../libcxx/src -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS -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 -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 -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -Werror=thread-safety -Wuser-defined-warnings  -nostdlib++ -L C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/lib/armv7-unknown-linux-gnueabihf -lc++ -lc++abi -pthread -latomic -o C:\buildbot\as-builder-1\x-armv7l\build\runtimes\runtimes-armv7-unknown-linux-gnueabihf-bins\libcxxabi\test\Output\uncaught_exception.pass.cpp.dir\t.tmp.exe
# executed command: C:/buildbot/as-builder-1/x-armv7l/build/./bin/clang++.exe 'C:\buildbot\as-builder-1\x-armv7l\llvm-project\libcxxabi\test\uncaught_exception.pass.cpp' --target=armv7-unknown-linux-gnueabihf -nostdinc++ -I C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/include -I C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/include/c++/v1 -I C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/include/armv7-unknown-linux-gnueabihf/c++/v1 -I C:/buildbot/as-builder-1/x-armv7l/llvm-project/libunwind/include -I C:/buildbot/as-builder-1/x-armv7l/llvm-project/libcxxabi/../libcxx/test/support -I C:/buildbot/as-builder-1/x-armv7l/llvm-project/libcxxabi/../libcxx/src -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS -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 -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 -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -Werror=thread-safety -Wuser-defined-warnings -nostdlib++ -L C:/buildbot/as-builder-1/x-armv7l/build/runtimes/runtimes-armv7-unknown-linux-gnueabihf-bins/libcxxabi/test-suite-install/lib/armv7-unknown-linux-gnueabihf -lc++ -lc++abi -pthread -latomic -o 'C:\buildbot\as-builder-1\x-armv7l\build\runtimes\runtimes-armv7-unknown-linux-gnueabihf-bins\libcxxabi\test\Output\uncaught_exception.pass.cpp.dir\t.tmp.exe'
# EXECUTED AS
"C:/Python310/python.exe" "C:/buildbot/as-builder-1/x-armv7l/llvm-project/libcxx/utils/ssh.py" --host=ubuntu at jetson6.lab.llvm.org --execdir C:\buildbot\as-builder-1\x-armv7l\build\runtimes\runtimes-armv7-unknown-linux-gnueabihf-bins\libcxxabi\test\Output\uncaught_exception.pass.cpp.dir --  C:\buildbot\as-builder-1\x-armv7l\build\runtimes\runtimes-armv7-unknown-linux-gnueabihf-bins\libcxxabi\test\Output\uncaught_exception.pass.cpp.dir\t.tmp.exe
# executed command: C:/Python310/python.exe C:/buildbot/as-builder-1/x-armv7l/llvm-project/libcxx/utils/ssh.py --host=ubuntu at jetson6.lab.llvm.org --execdir 'C:\buildbot\as-builder-1\x-armv7l\build\runtimes\runtimes-armv7-unknown-linux-gnueabihf-bins\libcxxabi\test\Output\uncaught_exception.pass.cpp.dir' -- 'C:\buildbot\as-builder-1\x-armv7l\build\runtimes\runtimes-armv7-unknown-linux-gnueabihf-bins\libcxxabi\test\Output\uncaught_exception.pass.cpp.dir\t.tmp.exe'
# .---command stderr------------
# | Traceback (most recent call last):
# |   File "C:\buildbot\as-builder-1\x-armv7l\llvm-project\libcxx\utils\ssh.py", line 145, in <module>
# |     exit(main())
# |   File "C:\buildbot\as-builder-1\x-armv7l\llvm-project\libcxx\utils\ssh.py", line 61, in main
# |     tmp = runCommand(
# |   File "C:\buildbot\as-builder-1\x-armv7l\llvm-project\libcxx\utils\ssh.py", line 57, in runCommand
# |     return subprocess.run(command, *args_, **kwargs)
# |   File "c:\python310\lib\subprocess.py", line 524, in run
# |     raise CalledProcessError(retcode, process.args,
# | subprocess.CalledProcessError: Command '['ssh', '-oBatchMode=yes', 'ubuntu at jetson6.lab.llvm.org', 'mktemp -d /tmp/libcxx.XXXXXXXXXX']' returned non-zero exit status 255.
# `-----------------------------
# error: command failed with exit status: 1

--

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

```

</details>

https://github.com/llvm/llvm-project/pull/114012