[llvm] [offload][SYCL] Add SYCL Module splitting (PR #119713)

Tue Mar 11 06:40:06 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-aarch64-darwin` running on `doug-worker-5` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/190/builds/16128

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
93.086 [68/8/5937] Linking CXX executable bin/llvm-opt-fuzzer
93.133 [67/8/5938] Linking CXX executable bin/sanstats
93.138 [66/8/5939] Linking CXX executable bin/verify-uselistorder
93.169 [65/8/5940] Linking CXX executable bin/llvm-reduce
93.173 [64/8/5941] Linking CXX executable bin/yaml2obj
93.277 [63/8/5942] Linking CXX executable unittests/BinaryFormat/BinaryFormatTests
93.310 [62/8/5943] Linking CXX executable unittests/Bitstream/BitstreamTests
93.313 [61/8/5944] Linking CXX executable unittests/AsmParser/AsmParserTests
93.519 [60/8/5945] Linking CXX executable unittests/ADT/ADTTests
93.558 [59/8/5946] Linking CXX executable bin/llvm-split
FAILED: bin/llvm-split 
: && /usr/bin/clang++ -fPIC -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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -O3 -DNDEBUG -arch arm64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX14.4.sdk -Wl,-search_paths_first -Wl,-headerpad_max_install_names -Wl,-dead_strip -Wl,-no_warn_duplicate_libraries tools/llvm-split/CMakeFiles/llvm-split.dir/llvm-split.cpp.o -o bin/llvm-split  -Wl,-rpath, at loader_path/../lib  lib/libLLVMAArch64AsmParser.a  lib/libLLVMAArch64CodeGen.a  lib/libLLVMAArch64Desc.a  lib/libLLVMAArch64Info.a  lib/libLLVMTransformUtils.a  lib/libLLVMBitWriter.a  lib/libLLVMCodeGen.a  lib/libLLVMCore.a  lib/libLLVMIRReader.a  lib/libLLVMMC.a  lib/libLLVMSupport.a  lib/libLLVMTarget.a  lib/libLLVMTargetParser.a  lib/libLLVMAArch64Utils.a  lib/libLLVMAsmPrinter.a  lib/libLLVMCFGuard.a  lib/libLLVMGlobalISel.a  lib/libLLVMSelectionDAG.a  lib/libLLVMCodeGen.a  lib/libLLVMScalarOpts.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMCGData.a  lib/libLLVMBitWriter.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMTarget.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMVectorize.a  lib/libLLVMTransformUtils.a  lib/libLLVMSandboxIR.a  lib/libLLVMAnalysis.a  lib/libLLVMProfileData.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMObject.a  lib/libLLVMIRReader.a  lib/libLLVMAsmParser.a  lib/libLLVMMCParser.a  lib/libLLVMMC.a  lib/libLLVMBitReader.a  lib/libLLVMCore.a  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a  lib/libLLVMTextAPI.a  lib/libLLVMBinaryFormat.a  lib/libLLVMTargetParser.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMSupport.a  lib/libLLVMDemangle.a  -lm  /Library/Developer/CommandLineTools/SDKs/MacOSX14.4.sdk/usr/lib/libz.tbd  /opt/homebrew/lib/libzstd.dylib && :
Undefined symbols for architecture arm64:
  "llvm::GlobalDCEPass::printPipeline(llvm::raw_ostream&, llvm::function_ref<llvm::StringRef (llvm::StringRef)>)", referenced from:
      llvm::detail::PassModel<llvm::Module, llvm::GlobalDCEPass, llvm::AnalysisManager<llvm::Module>>::printPipeline(llvm::raw_ostream&, llvm::function_ref<llvm::StringRef (llvm::StringRef)>) in libLLVMTransformUtils.a[86](SYCLSplitModule.cpp.o)
  "llvm::GlobalDCEPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)", referenced from:
      llvm::detail::PassModel<llvm::Module, llvm::GlobalDCEPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) in libLLVMTransformUtils.a[86](SYCLSplitModule.cpp.o)
  "llvm::PrintModulePass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)", referenced from:
      llvm::detail::PassModel<llvm::Module, llvm::PrintModulePass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) in libLLVMTransformUtils.a[86](SYCLSplitModule.cpp.o)
  "llvm::PrintModulePass::PrintModulePass(llvm::raw_ostream&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>> const&, bool, bool)", referenced from:
      saveModuleDesc((anonymous namespace)::ModuleDesc&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, bool) in libLLVMTransformUtils.a[86](SYCLSplitModule.cpp.o)
  "llvm::StripDeadDebugInfoPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)", referenced from:
      llvm::detail::PassModel<llvm::Module, llvm::StripDeadDebugInfoPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) in libLLVMTransformUtils.a[86](SYCLSplitModule.cpp.o)
  "llvm::StripDeadPrototypesPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)", referenced from:
      llvm::detail::PassModel<llvm::Module, llvm::StripDeadPrototypesPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) in libLLVMTransformUtils.a[86](SYCLSplitModule.cpp.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
93.570 [59/7/5947] Linking CXX executable unittests/Bitcode/BitcodeTests
93.577 [59/6/5948] Linking CXX executable unittests/CGData/CGDataTests
93.619 [59/5/5949] Linking CXX executable unittests/DebugInfo/CodeView/DebugInfoCodeViewTests
93.728 [59/4/5950] Linking CXX executable bin/opt
93.849 [59/3/5951] Linking CXX executable unittests/CodeGen/GlobalISel/GlobalISelTests
93.864 [59/2/5952] Linking CXX executable unittests/Analysis/AnalysisTests
93.900 [59/1/5953] Linking CXX executable unittests/CodeGen/CodeGenTests
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/119713