[llvm] [SandboxVec][Legality] Don't vectorize when instructions repeat (PR #124479)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-ppc64le-linux` running on `ppc64le-sanitizer` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/72/builds/7706

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

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild

+ echo @@@STEP_FAILURE@@@
+ buildbot_build
@@@STEP_FAILURE@@@
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ echo @@@BUILD_STEP test standalone compiler-rt@@@
+ ninja -C compiler_rt_build check-all
@@@BUILD_STEP test standalone compiler-rt@@@
ninja: Entering directory `compiler_rt_build'
ninja: error: loading 'build.ninja': No such file or directory
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild

+ echo @@@STEP_FAILURE@@@
+ buildbot_build
@@@STEP_FAILURE@@@
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ '[' 0 == 1 ']'
+ cleanup
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ echo @@@BUILD_STEP cleanup@@@
+ rm_dirs 'llvm_build2_*' 'llvm_build_*' 'libcxx_build_*' 'libcxx_install_*' compiler_rt_build 'symbolizer_build*'
+ rm -rf 'llvm_build2_*' 'llvm_build_*' 'libcxx_build_*' 'libcxx_install_*' compiler_rt_build 'symbolizer_build*'
@@@BUILD_STEP cleanup@@@
+ ccache -s
+ rm_dirs llvm_build64
+ rm -rf llvm_build64
+ find -path ./llvm-project -prune -o -executable -type f -path '*unittests*' -print -exec rm -f '{}' ';'
+ du -hs ./build_debug ./build_default ./build_gcc ./build_tsan_debug ./llvm-project ./llvm_build0
+ sort -h
58M	./build_default
4.8G	./llvm-project
4.9G	./build_tsan_debug
6.5G	./llvm_build0
8.9G	./build_debug
11G	./build_gcc
Step 8 (build compiler-rt debug) failure: build compiler-rt debug (failure)
...
-- Performing Test HAVE_CXX_FLAG_PEDANTIC_ERRORS - Success
-- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32
-- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32 - Success
-- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS - Success
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED - Success
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS - Success
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WD654
-- Performing Test HAVE_CXX_FLAG_WD654 - Failed
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY - Success
-- Enabling additional flags: -DINCLUDE_DIRECTORIES=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/third-party/benchmark/include
-- Compiling and running to test HAVE_THREAD_SAFETY_ATTRIBUTES
-- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- success
-- Performing Test HAVE_CXX_FLAG_COVERAGE
-- Performing Test HAVE_CXX_FLAG_COVERAGE - Success
-- Compiling and running to test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Compiling and running to test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- success
-- Compiling and running to test HAVE_STEADY_CLOCK
-- Performing Test HAVE_STEADY_CLOCK -- success
-- Compiling and running to test HAVE_PTHREAD_AFFINITY
-- Performing Test HAVE_PTHREAD_AFFINITY -- failed to compile
-- Configuring done (16.9s)
-- Generating done (5.2s)
-- Build files have been written to: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_default
+ ninja -C build_default
ninja: Entering directory `build_default'
ninja: error: build.ninja:4129: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

+ touch build_default/delete_next_time
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ sleep 5
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ echo '@@@BUILD_STEP test compiler-rt debug@@@'
Step 9 (test compiler-rt debug) failure: test compiler-rt debug (failure)
@@@BUILD_STEP test compiler-rt debug@@@
+ ninja -C build_default check-compiler-rt
ninja: Entering directory `build_default'
ninja: error: build.ninja:4129: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ build tsan_debug '-DCOMPILER_RT_DEBUG=ON -DCOMPILER_RT_TSAN_DEBUG_OUTPUT=ON -DLLVM_INCLUDE_TESTS=OFF -DCOMPILER_RT_BUILD_LIBFUZZER=OFF'
+ [[  -DLLVM_APPEND_VC_REV=OFF -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_CCACHE_BUILD=ON -DLLVM_USE_LINKER=lld -DLLVM_TARGETS_TO_BUILD=PowerPC -DLLVM_LIT_ARGS=-vj256 -DLLVM_ENABLE_PROJECTS=clang;lld -DLLVM_ENABLE_RUNTIMES=libcxx;libcxxabi;compiler-rt;libunwind -DLLVM_BUILD_LLVM_DYLIB=ON -DLLVM_ENABLE_ASSERTIONS=ON  -DCMAKE_C_COMPILER=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm_build0/bin/clang -DCMAKE_CXX_COMPILER=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm_build0/bin/clang++ -DLLVM_ENABLE_WERROR=ON =~ LLVM_CCACHE_BUILD=ON ]]
+ BUILD_DIR=build_default
+ rm -rf build_default
+ echo '@@@BUILD_STEP build compiler-rt tsan_debug@@@'
+ [[ ! -f build_default/delete_next_time ]]
+ mkdir -p build_default
Step 10 (build compiler-rt tsan_debug) failure: build compiler-rt tsan_debug (failure)
...
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS - Success
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED - Success
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS - Success
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WD654
-- Performing Test HAVE_CXX_FLAG_WD654 - Failed
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY - Success
-- Enabling additional flags: -DINCLUDE_DIRECTORIES=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/third-party/benchmark/include
-- Compiling and running to test HAVE_THREAD_SAFETY_ATTRIBUTES
-- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- success
-- Performing Test HAVE_CXX_FLAG_COVERAGE
-- Performing Test HAVE_CXX_FLAG_COVERAGE - Success
-- Compiling and running to test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Compiling and running to test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- success
-- Compiling and running to test HAVE_STEADY_CLOCK
-- Performing Test HAVE_STEADY_CLOCK -- success
-- Compiling and running to test HAVE_PTHREAD_AFFINITY
-- Performing Test HAVE_PTHREAD_AFFINITY -- failed to compile
-- Configuring done (12.6s)
-- Generating done (2.5s)
-- Build files have been written to: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_default
+ ninja -C build_default
ninja: Entering directory `build_default'
ninja: error: build.ninja:4108: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

+ touch build_default/delete_next_time
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ build_and_test default ''
+ build default ''
+ [[  -DLLVM_APPEND_VC_REV=OFF -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_CCACHE_BUILD=ON -DLLVM_USE_LINKER=lld -DLLVM_TARGETS_TO_BUILD=PowerPC -DLLVM_LIT_ARGS=-vj256 -DLLVM_ENABLE_PROJECTS=clang;lld -DLLVM_ENABLE_RUNTIMES=libcxx;libcxxabi;compiler-rt;libunwind -DLLVM_BUILD_LLVM_DYLIB=ON -DLLVM_ENABLE_ASSERTIONS=ON  -DCMAKE_C_COMPILER=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm_build0/bin/clang -DCMAKE_CXX_COMPILER=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm_build0/bin/clang++ -DLLVM_ENABLE_WERROR=ON =~ LLVM_CCACHE_BUILD=ON ]]
+ BUILD_DIR=build_default
+ rm -rf build_default
+ echo '@@@BUILD_STEP build compiler-rt default@@@'
+ [[ ! -f build_default/delete_next_time ]]
Step 11 (build compiler-rt default) failure: build compiler-rt default (failure)
...
-- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32
-- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32 - Success
-- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS - Success
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED - Success
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS - Success
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WD654
-- Performing Test HAVE_CXX_FLAG_WD654 - Failed
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY - Success
-- Enabling additional flags: -DINCLUDE_DIRECTORIES=/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/third-party/benchmark/include
-- Compiling and running to test HAVE_THREAD_SAFETY_ATTRIBUTES
-- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- success
-- Performing Test HAVE_CXX_FLAG_COVERAGE
-- Performing Test HAVE_CXX_FLAG_COVERAGE - Success
-- Compiling and running to test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Compiling and running to test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- success
-- Compiling and running to test HAVE_STEADY_CLOCK
-- Performing Test HAVE_STEADY_CLOCK -- success
-- Compiling and running to test HAVE_PTHREAD_AFFINITY
-- Performing Test HAVE_PTHREAD_AFFINITY -- failed to compile
-- Configuring done (16.9s)
-- Generating done (5.2s)
-- Build files have been written to: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_default
+ ninja -C build_default
ninja: Entering directory `build_default'
ninja: error: build.ninja:4129: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

+ touch build_default/delete_next_time
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ echo '@@@BUILD_STEP test compiler-rt default@@@'
+ ninja -C build_default check-compiler-rt
Step 12 (test compiler-rt default) failure: test compiler-rt default (failure)
@@@BUILD_STEP test compiler-rt default@@@
ninja: Entering directory `build_default'
ninja: error: build.ninja:4129: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
Step 13 (build standalone compiler-rt) failure: build standalone compiler-rt (failure)
...
  the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:22 (project):
  The CMAKE_CXX_COMPILER:

    /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/build_default/bin/clang++

  is not a full path to an existing compiler tool.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:22 (project):
  No CMAKE_ASM_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "ASM" or the CMake cache entry CMAKE_ASM_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.
-- Warning: Did not find file Compiler/-ASM
-- Configuring incomplete, errors occurred!
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ ninja -C compiler_rt_build
ninja: Entering directory `compiler_rt_build'
ninja: error: loading 'build.ninja': No such file or directory
+ build_failure
+ echo
+ echo 'How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild'
+ echo
+ sleep 5

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
+ echo @@@STEP_FAILURE@@@
+ buildbot_build
+ [[ '' != \1 ]]
+ [[ -v BUILDBOT_BUILDERNAME ]]
+ echo @@@BUILD_STEP test standalone compiler-rt@@@
+ ninja -C compiler_rt_build check-all

```

</details>

https://github.com/llvm/llvm-project/pull/124479