[llvm] [OpenMP] Implement EnumSet container (PR #211323)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `bolt-x86_64-ubuntu-shared` running on `bolt-worker` while building `llvm` at step 5 "build-bolt".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/151/builds/10503

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

```
Step 5 (build-bolt) failure: build (failure)
...
7.344 [1016/18/1315] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MemoryLocation.cpp.o
7.348 [1015/18/1316] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MemoryProfileInfo.cpp.o
7.352 [1014/18/1317] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ModuleDebugInfoPrinter.cpp.o
7.354 [1013/18/1318] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MemorySSA.cpp.o
7.357 [1012/18/1319] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/NoInferenceModelRunner.cpp.o
7.359 [1011/18/1320] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ModuleSummaryAnalysis.cpp.o
7.360 [1010/18/1321] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ObjCARCAnalysisUtils.cpp.o
7.361 [1009/18/1322] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MustExecute.cpp.o
7.361 [1008/18/1323] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ObjCARCAliasAnalysis.cpp.o
7.362 [1007/18/1324] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o
FAILED: lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o 
ccache /usr/bin/c++ -DLLVM_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/build/lib/Frontend/OpenMP -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/build/include -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fPIC -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o -MF lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o.d -o lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP/DirectiveNameParser.cpp
In file included from /usr/include/c++/11/cassert:44,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/ADT/Bitset.h:21,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMP.h:20,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/DirectiveNameParser.h:15,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP/DirectiveNameParser.cpp:9:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMP.h: In member function ‘constexpr Enum llvm::omp::detail::EnumSetIterator<Enum, Size>::operator*() const’:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMP.h:138:14: error: ‘const llvm::omp::EnumSet<Enum, Size>::Base’ has not been declared
  138 |   assert(Set.Base::test(At));
      |              ^~~~
7.365 [1007/17/1325] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ObjCARCInstKind.cpp.o
7.370 [1007/16/1326] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/OptimizationRemarkEmitter.cpp.o
7.372 [1007/15/1327] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/OverflowInstAnalysis.cpp.o
7.373 [1007/14/1328] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PHITransAddr.cpp.o
7.374 [1007/13/1329] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PhiValues.cpp.o
7.375 [1007/12/1330] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PostDominators.cpp.o
7.376 [1007/11/1331] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PtrUseVisitor.cpp.o
7.376 [1007/10/1332] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ProfileSummaryInfo.cpp.o
7.461 [1007/9/1333] Building X86GenFastISel.inc...
7.615 [1007/8/1334] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPContext.cpp.o
FAILED: lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPContext.cpp.o 
ccache /usr/bin/c++ -DLLVM_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/build/lib/Frontend/OpenMP -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/build/include -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fPIC -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPContext.cpp.o -MF lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPContext.cpp.o.d -o lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPContext.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP/OMPContext.cpp
In file included from /usr/include/c++/11/cassert:44,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/ADT/Bitset.h:21,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMP.h:20,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMPConstants.h:19,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMPContext.h:22,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP/OMPContext.cpp:15:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMP.h: In member function ‘constexpr Enum llvm::omp::detail::EnumSetIterator<Enum, Size>::operator*() const’:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include/llvm/Frontend/OpenMP/OMP.h:138:14: error: ‘const llvm::omp::EnumSet<Enum, Size>::Base’ has not been declared
  138 |   assert(Set.Base::test(At));
      |              ^~~~
7.722 [1007/7/1335] Building X86GenGlobalISel.inc...
9.106 [1007/6/1336] Building X86GenDAGISel.inc...
9.136 [1007/5/1337] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMP.cpp.o
FAILED: lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMP.cpp.o 
ccache /usr/bin/c++ -DLLVM_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/build/lib/Frontend/OpenMP -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/build/include -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fPIC -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMP.cpp.o -MF lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMP.cpp.o.d -o lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMP.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-shared/llvm-project/llvm/lib/Frontend/OpenMP/OMP.cpp
In file included from /usr/include/c++/11/cassert:44,

```

</details>

https://github.com/llvm/llvm-project/pull/211323