[Mlir-commits] [mlir] [mlir][affine] Add fold logic when the affine.yield has IV as operand in the AffineForEmptyLoopFolder (PR #164064)

Wed Oct 29 11:14:49 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `amdgpu-offload-rhel-9-cmake-build-only` running on `rocm-docker-rhel-9` while building `mlir` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/205/builds/26377

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

```
Step 4 (annotate) failure: '../llvm-zorg/zorg/buildbot/builders/annotated/amdgpu-offload-cmake.py --jobs=32' (failure)
...
[6079/8171] Building CXX object tools/clang/lib/DirectoryWatcher/CMakeFiles/obj.clangDirectoryWatcher.dir/linux/DirectoryWatcher-linux.cpp.o
[6080/8171] Building CXX object tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/Parsing.cpp.o
[6081/8171] Linking CXX shared library lib/libclangParse.so.22.0git
[6082/8171] Building CXX object tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/RangeSelector.cpp.o
[6083/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/CommentToXML.cpp.o
[6084/8171] Building CXX object tools/clang/lib/Tooling/Syntax/CMakeFiles/obj.clangToolingSyntax.dir/Tokens.cpp.o
[6085/8171] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/CompilationDatabase.cpp.o
[6086/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/FileIndexRecord.cpp.o
[6087/8171] Creating library symlink lib/libclangParse.so
[6088/8171] Building CXX object tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o
FAILED: tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o 
ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/build/tools/mlir/lib/Dialect/Affine/IR -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/build/tools/mlir/include -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/include -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/build/include -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/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 -Wundef -Wno-unused-but-set-parameter -Wno-deprecated-copy -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o -MF tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o.d -o tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o -c /home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR/AffineOps.cpp: In function ‘llvm::SmallVector<mlir::OpFoldResult> AffineForEmptyLoopFolder(mlir::affine::AffineForOp)’:
/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR/AffineOps.cpp:2678:10: error: could not convert ‘replacements’ from ‘SmallVector<[...],4>’ to ‘SmallVector<[...],6>’
 2678 |   return replacements;
      |          ^~~~~~~~~~~~
      |          |
      |          SmallVector<[...],4>
[6089/8171] Linking CXX shared library lib/libMLIRCAPIExecutionEngine.so.22.0git
[6090/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexSymbol.cpp.o
[6091/8171] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/LocateToolCompilationDatabase.cpp.o
[6092/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/USRGeneration.cpp.o
[6093/8171] Building CXX object tools/clang/lib/IndexSerialization/CMakeFiles/obj.clangIndexSerialization.dir/SerializablePathCollection.cpp.o
[6094/8171] Building CXX object tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/DylibVerifier.cpp.o
[6095/8171] Linking CXX shared library lib/libclangDirectoryWatcher.so.22.0git
[6096/8171] Linking CXX shared library lib/libclangSerialization.so.22.0git
[6097/8171] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/RefactoringCallbacks.cpp.o
[6098/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/AtomicChange.cpp.o
[6099/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/RefactoringActions.cpp.o
[6100/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/USRFindingAction.cpp.o
[6101/8171] Building AMDGPUGenCallingConv.inc...
[6102/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/RenamingAction.cpp.o
[6103/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexingContext.cpp.o
[6104/8171] Building CXX object tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/ModuleDepCollector.cpp.o
[6105/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexDecl.cpp.o
[6106/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexingAction.cpp.o
[6107/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexTypeSourceInfo.cpp.o
[6108/8171] Building CXX object tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScannerImpl.cpp.o
[6109/8171] Building CXX object tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScanningWorker.cpp.o
[6110/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexBody.cpp.o
[6111/8171] Building CXX object tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/Frontend.cpp.o
[6112/8171] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
[6113/8171] Building CXX object tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInvocation.cpp.o
[6114/8171] Building AMDGPUGenAsmWriter.inc...
[6115/8171] Building CXX object tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPUtility.cpp.o
[6116/8171] Building AMDGPUGenGlobalISel.inc...
[6117/8171] Building AMDGPUGenDAGISel.inc...
[6118/8171] Building AMDGPUGenInstrInfo.inc...
[6119/8171] Building AMDGPUGenRegisterInfo.inc...
Step 7 (build cmake config) failure: build cmake config (failure)
...
[6079/8171] Building CXX object tools/clang/lib/DirectoryWatcher/CMakeFiles/obj.clangDirectoryWatcher.dir/linux/DirectoryWatcher-linux.cpp.o
[6080/8171] Building CXX object tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/Parsing.cpp.o
[6081/8171] Linking CXX shared library lib/libclangParse.so.22.0git
[6082/8171] Building CXX object tools/clang/lib/Tooling/Transformer/CMakeFiles/obj.clangTransformer.dir/RangeSelector.cpp.o
[6083/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/CommentToXML.cpp.o
[6084/8171] Building CXX object tools/clang/lib/Tooling/Syntax/CMakeFiles/obj.clangToolingSyntax.dir/Tokens.cpp.o
[6085/8171] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/CompilationDatabase.cpp.o
[6086/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/FileIndexRecord.cpp.o
[6087/8171] Creating library symlink lib/libclangParse.so
[6088/8171] Building CXX object tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o
FAILED: tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o 
ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/build/tools/mlir/lib/Dialect/Affine/IR -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/build/tools/mlir/include -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/include -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/build/include -I/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/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 -Wundef -Wno-unused-but-set-parameter -Wno-deprecated-copy -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o -MF tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o.d -o tools/mlir/lib/Dialect/Affine/IR/CMakeFiles/obj.MLIRAffineDialect.dir/AffineOps.cpp.o -c /home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR/AffineOps.cpp: In function ‘llvm::SmallVector<mlir::OpFoldResult> AffineForEmptyLoopFolder(mlir::affine::AffineForOp)’:
/home/botworker/bbot/amdgpu-offload-rhel-9-cmake-build-only/llvm-project/mlir/lib/Dialect/Affine/IR/AffineOps.cpp:2678:10: error: could not convert ‘replacements’ from ‘SmallVector<[...],4>’ to ‘SmallVector<[...],6>’
 2678 |   return replacements;
      |          ^~~~~~~~~~~~
      |          |
      |          SmallVector<[...],4>
[6089/8171] Linking CXX shared library lib/libMLIRCAPIExecutionEngine.so.22.0git
[6090/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexSymbol.cpp.o
[6091/8171] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/LocateToolCompilationDatabase.cpp.o
[6092/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/USRGeneration.cpp.o
[6093/8171] Building CXX object tools/clang/lib/IndexSerialization/CMakeFiles/obj.clangIndexSerialization.dir/SerializablePathCollection.cpp.o
[6094/8171] Building CXX object tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/DylibVerifier.cpp.o
[6095/8171] Linking CXX shared library lib/libclangDirectoryWatcher.so.22.0git
[6096/8171] Linking CXX shared library lib/libclangSerialization.so.22.0git
[6097/8171] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/RefactoringCallbacks.cpp.o
[6098/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/AtomicChange.cpp.o
[6099/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/RefactoringActions.cpp.o
[6100/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/USRFindingAction.cpp.o
[6101/8171] Building AMDGPUGenCallingConv.inc...
[6102/8171] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/RenamingAction.cpp.o
[6103/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexingContext.cpp.o
[6104/8171] Building CXX object tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/ModuleDepCollector.cpp.o
[6105/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexDecl.cpp.o
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[6107/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexTypeSourceInfo.cpp.o
[6108/8171] Building CXX object tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScannerImpl.cpp.o
[6109/8171] Building CXX object tools/clang/lib/Tooling/DependencyScanning/CMakeFiles/obj.clangDependencyScanning.dir/DependencyScanningWorker.cpp.o
[6110/8171] Building CXX object tools/clang/lib/Index/CMakeFiles/obj.clangIndex.dir/IndexBody.cpp.o
[6111/8171] Building CXX object tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/Frontend.cpp.o
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[6113/8171] Building CXX object tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/CompilerInvocation.cpp.o
[6114/8171] Building AMDGPUGenAsmWriter.inc...
[6115/8171] Building CXX object tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPUtility.cpp.o
[6116/8171] Building AMDGPUGenGlobalISel.inc...
[6117/8171] Building AMDGPUGenDAGISel.inc...
[6118/8171] Building AMDGPUGenInstrInfo.inc...
[6119/8171] Building AMDGPUGenRegisterInfo.inc...

```

</details>

https://github.com/llvm/llvm-project/pull/164064