[Mlir-commits] [flang] [mlir] [flang][acc] Add ACCUseDeviceCanonicalizer pass (PR #175228)

Wed Jan 14 12:13:17 PST 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-aarch64-sharedlibs` running on `linaro-flang-aarch64-sharedlibs` while building `flang,mlir` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/80/builds/19643

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
-- Builtin supported architectures: aarch64
-- AArch64 SME ABI routines enabled
-- Performing additional configure checks with target flags: -nostdinc++ -Wno-c2y-extensions -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -march=armv8-a
-- Performing Test COMPILER_RT_HAS_aarch64_BFLOAT16
-- Performing Test COMPILER_RT_HAS_aarch64_BFLOAT16 - Success
-- For aarch64 builtins preferring aarch64/fp_mode.c to fp_mode.c
-- Configuring done (18.7s)
-- Generating done (0.0s)
-- Build files have been written to: /home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/runtimes/builtins-bins
1596.624 [57/14/8147] Linking CXX shared library lib/libFIROpenACCTransforms.so.23.0git
FAILED: lib/libFIROpenACCTransforms.so.23.0git 
: && /usr/local/bin/c++ -fPIC -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Wno-deprecated-copy -Wno-string-conversion -Wno-ctad-maybe-unsupported -Wno-unused-command-line-argument -Wstring-conversion           -Wcovered-switch-default -Wno-nested-anon-types -Xclang -fno-pch-timestamp -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete   -Wl,-rpath-link,/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/./lib  -Wl,--gc-sections -shared -Wl,-soname,libFIROpenACCTransforms.so.23.0git -o lib/libFIROpenACCTransforms.so.23.0git tools/flang/lib/Optimizer/OpenACC/Transforms/CMakeFiles/FIROpenACCTransforms.dir/ACCUseDeviceCanonicalizer.cpp.o tools/flang/lib/Optimizer/OpenACC/Transforms/CMakeFiles/FIROpenACCTransforms.dir/ACCInitializeFIRAnalyses.cpp.o tools/flang/lib/Optimizer/OpenACC/Transforms/CMakeFiles/FIROpenACCTransforms.dir/ACCRecipeBufferization.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/lib:"  lib/libFIROpenACCAnalysis.so.23.0git  lib/libFIRAnalysis.so.23.0git  lib/libFIRBuilder.so.23.0git  lib/libHLFIRDialect.so.23.0git  lib/libFIRDialect.so.23.0git  lib/libMLIROpenACCUtils.so.23.0git  lib/libMLIROpenACCDialect.so.23.0git  lib/libMLIRSCFUtils.so.23.0git  lib/libMLIRAffineAnalysis.so.23.0git  lib/libMLIRSCFDialect.so.23.0git  lib/libMLIRControlFlowDialect.so.23.0git  lib/libMLIRTensorDialect.so.23.0git  lib/libMLIRAffineDialect.so.23.0git  lib/libMLIRParallelCombiningOpInterface.so.23.0git  lib/libMLIRTransforms.so.23.0git  lib/libMLIRTransformUtils.so.23.0git  lib/libMLIRSubsetOpInterface.so.23.0git  lib/libMLIRRewrite.so.23.0git  lib/libMLIRRewritePDL.so.23.0git  lib/libMLIRPDLToPDLInterp.so.23.0git  lib/libMLIRPass.so.23.0git  lib/libMLIRPDLInterpDialect.so.23.0git  lib/libMLIRPDLDialect.so.23.0git  lib/libMLIRRuntimeVerifiableOpInterface.so.23.0git  lib/libMLIROpenACCMPCommon.so.23.0git  lib/libMLIRFuncDialect.so.23.0git  lib/libMLIRGPUDialect.so.23.0git  lib/libMLIRMemRefDialect.so.23.0git  lib/libMLIRArithUtils.so.23.0git  lib/libMLIRComplexDialect.so.23.0git  lib/libMLIRDialectUtils.so.23.0git  lib/libMLIRMemOpInterfaces.so.23.0git  lib/libMLIRValueBoundsOpInterface.so.23.0git  lib/libMLIRAnalysis.so.23.0git  lib/libMLIRLoopLikeInterface.so.23.0git  lib/libMLIRInferStridedMetadataInterface.so.23.0git  lib/libMLIRPresburger.so.23.0git  lib/libMLIRViewLikeInterface.so.23.0git  lib/libMLIRDestinationStyleOpInterface.so.23.0git  lib/libMLIRDLTIDialect.so.23.0git  lib/libMLIRMathDialect.so.23.0git  lib/libMLIRArithDialect.so.23.0git  lib/libMLIRInferIntRangeCommon.so.23.0git  lib/libMLIRShapedOpInterfaces.so.23.0git  lib/libMLIRCastInterfaces.so.23.0git  lib/libMLIRDialect.so.23.0git  lib/libMLIRUBDialect.so.23.0git  lib/libMLIRLLVMDialect.so.23.0git  lib/libMLIRControlFlowInterfaces.so.23.0git  lib/libMLIRFunctionInterfaces.so.23.0git  lib/libMLIRCallInterfaces.so.23.0git  lib/libMLIRDataLayoutInterfaces.so.23.0git  lib/libMLIRInferTypeOpInterface.so.23.0git  lib/libMLIRMemorySlotInterfaces.so.23.0git  lib/libMLIRPtrMemorySpaceInterfaces.so.23.0git  lib/libMLIRSideEffectInterfaces.so.23.0git  lib/libMLIRInferIntRangeInterface.so.23.0git  lib/libMLIRIR.so.23.0git  lib/libMLIRSupport.so.23.0git  lib/libLLVMCore.so.23.0git  lib/libLLVMBinaryFormat.so.23.0git  lib/libLLVMSupport.so.23.0git  -Wl,-rpath-link,/home/tcwg-buildbot/worker/flang-aarch64-sharedlibs/build/lib && :
/usr/bin/ld: tools/flang/lib/Optimizer/OpenACC/Transforms/CMakeFiles/FIROpenACCTransforms.dir/ACCUseDeviceCanonicalizer.cpp.o: in function `(anonymous namespace)::UseDeviceHostDataHoisting::matchAndRewrite(mlir::acc::HostDataOp, mlir::PatternRewriter&) const':
ACCUseDeviceCanonicalizer.cpp:(.text._ZNK12_GLOBAL__N_125UseDeviceHostDataHoisting15matchAndRewriteEN4mlir3acc10HostDataOpERNS1_15PatternRewriterE+0x6a0): undefined reference to `fir::getKindMapping(mlir::ModuleOp)'
/usr/bin/ld: ACCUseDeviceCanonicalizer.cpp:(.text._ZNK12_GLOBAL__N_125UseDeviceHostDataHoisting15matchAndRewriteEN4mlir3acc10HostDataOpERNS1_15PatternRewriterE+0xe3c): undefined reference to `fir::getKindMapping(mlir::ModuleOp)'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
1604.724 [57/5/8156] Linking CXX shared library lib/libFortranSemantics.so.23.0git
1607.635 [57/3/8158] Building CXX object tools/flang/lib/Frontend/CMakeFiles/flangFrontend.dir/CompilerInvocation.cpp.o
1692.677 [57/2/8159] Building CXX object tools/flang/lib/Frontend/CMakeFiles/flangFrontend.dir/FrontendActions.cpp.o
1763.264 [57/1/8160] Building CXX object tools/flang/lib/Frontend/CMakeFiles/flangFrontend.dir/ParserActions.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/175228