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

Fri Jul 24 04:17:48 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `mlir-nvidia-gcc7` running on `mlir-nvidia` while building `llvm` at step 6 "build-check-mlir-build-only".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/116/builds/30847

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

```
Step 6 (build-check-mlir-build-only) failure: build (failure)
...
In file included from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/SeedCollection.cpp:15:0:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h: In static member function ‘static llvm::sandboxir::Type* llvm::sandboxir::VecUtils::getCombinedVectorTypeFor(llvm::ArrayRef<llvm::sandboxir::Instruction*>, const llvm::DataLayout&)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h:126:22: warning: unused variable ‘Idx’ [-Wunused-variable]
     for (auto [Idx, V] : enumerate(Bndl)) {
                      ^
11.692 [3765/16/1594] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/Passes/TransactionSave.cpp.o
11.699 [3764/16/1595] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/SandboxVectorizer.cpp.o
11.705 [3763/16/1596] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/RegionWithScore.cpp.o
11.706 [3762/16/1597] Building X86GenPostLegalizeGICombiner.inc...
11.714 [3761/16/1598] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o
FAILED: lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/DirectiveNameParser.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/g++-7 -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/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/lib/Frontend/OpenMP -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Frontend/OpenMP -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/include -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/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-array-bounds -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++1z -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 /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Frontend/OpenMP/DirectiveNameParser.cpp
In file included from /usr/include/c++/7/cassert:44:0,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/ADT/Bitset.h:21,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Frontend/OpenMP/OMP.h:20,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Frontend/OpenMP/DirectiveNameParser.h:15,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Frontend/OpenMP/DirectiveNameParser.cpp:9:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Frontend/OpenMP/OMP.h: In member function ‘constexpr Enum llvm::omp::detail::EnumSetIterator<Enum, Size>::operator*() const’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Frontend/OpenMP/OMP.h:138:14: error: ‘Base’ has not been declared
   assert(Set.Base::test(At));
              ^
11.718 [3761/15/1599] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/SandboxVectorizerIR.cpp.o
In file included from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerIR.cpp:11:0:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h: In static member function ‘static llvm::sandboxir::Type* llvm::sandboxir::VecUtils::getCombinedVectorTypeFor(llvm::ArrayRef<llvm::sandboxir::Instruction*>, const llvm::DataLayout&)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h:126:22: warning: unused variable ‘Idx’ [-Wunused-variable]
     for (auto [Idx, V] : enumerate(Bndl)) {
                      ^
11.719 [3761/14/1600] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/Scheduler.cpp.o
In file included from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Scheduler.cpp:10:0:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h: In static member function ‘static llvm::sandboxir::Type* llvm::sandboxir::VecUtils::getCombinedVectorTypeFor(llvm::ArrayRef<llvm::sandboxir::Instruction*>, const llvm::DataLayout&)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h:126:22: warning: unused variable ‘Idx’ [-Wunused-variable]
     for (auto [Idx, V] : enumerate(Bndl)) {
                      ^
11.721 [3761/13/1601] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/SandboxVectorizerPassBuilder.cpp.o
In file included from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/InstrMaps.h:21:0,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/Passes/BottomUpVec.h:20,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerPassBuilder.cpp:3:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h: In static member function ‘static llvm::sandboxir::Type* llvm::sandboxir::VecUtils::getCombinedVectorTypeFor(llvm::ArrayRef<llvm::sandboxir::Instruction*>, const llvm::DataLayout&)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h:126:22: warning: unused variable ‘Idx’ [-Wunused-variable]
     for (auto [Idx, V] : enumerate(Bndl)) {
                      ^
In file included from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/Passes/BottomUpVec.h:21:0,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerPassBuilder.cpp:3:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/Legality.h: At global scope:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/Legality.h:186:33: warning: ‘maybe_unused’ attribute ignored [-Wattributes]
   [[maybe_unused]] ResultReason Reason;
                                 ^~~~~~
11.724 [3761/12/1602] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SandboxVectorizer/SeedCollector.cpp.o
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Transforms/Vectorize/SandboxVectorizer/SeedCollector.cpp: In member function ‘void llvm::sandboxir::SeedContainer::print(llvm::raw_ostream&) const’:

```

</details>

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